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संदर्भ: नीचे दी गई छवियाँ चुम्बकों के दो जोड़े दिखाती हैं। अलग-अलग जोड़ों में चुम्बक एक दूसरे को प्रभावित नहीं करते हैं। दिखाए गए सभी चुम्बक एक ही सामग्री से बने हैं, लेकिन उनमें से कुछ अलग-अलग आकार के हैं।
प्रत्येक जोड़े में चुम्बकों के बीच चुंबकीय बल के बारे में सोचें। निम्नलिखित में से कौन सा कथन सत्य है?
|
[
"दोनों जोड़ों में चुंबकीय बल का परिमाण समान है।",
"जोड़ी 2 में चुंबकीय बल का परिमाण कम है।",
"जोड़ी 1 में चुंबकीय बल का परिमाण कम है।"
] | 2 |
closed choice
|
grade7
|
natural science
|
physics
|
Velocity, acceleration, and forces
|
Compare magnitudes of magnetic forces
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You can change the magnitude of a magnetic force between two magnets by changing the distance between them. The magnitude of the magnetic force is smaller when there is a greater distance between the magnets.
|
Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magnitude of the magnetic force between them is smaller.
There is a greater distance between the magnets in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is smaller in Pair 1 than in Pair 2.
|
|
व्योमिंग की राजधानी क्या है?
|
[
"सेलम",
"ओलंपिया",
"लारमी",
"चेयेन"
] | 3 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify the 50 state capitals
|
Cheyenne is the capital of Wyoming.
|
||
संदर्भ: स्लेट में निम्नलिखित गुण हैं:
प्राकृतिक रूप से पाया जाने वाला
ठोस
शुद्ध पदार्थ नहीं
जीवों द्वारा नहीं बनाया गया
कोई निश्चित क्रिस्टल संरचना नहीं
क्या स्लेट एक खनिज है?
|
[
"नहीं",
"हाँ"
] | 0 |
yes or no
|
grade6
|
natural science
|
earth-science
|
Rocks and minerals
|
Identify rocks and minerals
|
Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last three properties:
A mineral is not made by organisms.
Organisms make their own body parts. For example, snails and clams make their shells. Because they are made by organisms, body parts cannot be minerals.
Humans are organisms too. So, substances that humans make by hand or in factories cannot be minerals.
A mineral is a pure substance.
A pure substance is made of only one type of matter. All minerals are pure substances.
A mineral has a fixed crystal structure.
The crystal structure of a substance tells you how the atoms or molecules in the substance are arranged. Different types of minerals have different crystal structures, but all minerals have a fixed crystal structure. This means that the atoms or molecules in different pieces of the same type of mineral are always arranged the same way.
|
Slate does not have all the properties of a mineral. So, slate is not a mineral.
|
|
संदर्भ: पक्षियों के पंख, दो पंख और एक चोंच होती है। पेंटेड स्टॉर्क एक पक्षी का उदाहरण है।
नीचे दिए गए पक्षी का चयन करें।
|
[
"टाइगर शार्क",
"गंजा ईगल"
] | 1 |
closed choice
|
grade2
|
natural science
|
biology
|
Classification
|
Identify mammals, birds, fish, reptiles, and amphibians
|
Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification.
|
A bald eagle is a bird. It has feathers, two wings, and a beak.
A tiger shark is a fish. It lives underwater. It has fins, not limbs.
|
|
संदर्भ: व्यापार तब होता है जब लोग वस्तुओं और सेवाओं का आदान-प्रदान करने के लिए सहमत होते हैं। लोग कुछ और पाने के लिए कुछ छोड़ देते हैं। कभी-कभी लोग वस्तु विनिमय करते हैं, या सीधे एक वस्तु या सेवा का दूसरे से आदान-प्रदान करते हैं।
ब्रेंडन और इसहाक स्कूल कैफेटेरिया में अपने लंच बॉक्स खोलते हैं। दोनों अपने लंच से खुश हो सकते थे। ब्रेंडन अपने लंच में ब्रोकली चाहता था और इसहाक टमाटर की उम्मीद कर रहा था। उनके लंच की तस्वीरों को देखें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
ब्रेंडन और इसहाक क्या व्यापार कर सकते हैं ताकि प्रत्येक को वह मिल जाए जो वे चाहते हैं?
|
[
"इसहाक अपनी ब्रोकली के बदले ब्रेंडन के संतरे ले सकता है।",
"इसहाक अपने बादाम के बदले ब्रेंडन के टमाटर ले सकता है।",
"ब्रेंडन अपने टमाटर के बदले इसहाक की ब्रोकली ले सकता",
"Brendan can trade his tomatoes for Isaac's sandwich."
] | 2 |
closed choice
|
grade6
|
social science
|
economics
|
Basic economic principles
|
Trade and specialization
|
Brendan wanted broccoli in his lunch and Isaac was hoping for tomatoes. Look at the labeled part of the images.
Brendan has tomatoes. Isaac has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want.
|
||
संदर्भ: नीचे दिए गए प्रश्न का उत्तर देने के लिए डेटा का उपयोग करें।
हमारे सौर मंडल के बारे में निम्नलिखित कथन सत्य है या असत्य?
सबसे छोटा ग्रह मुख्य रूप से चट्टान से बना है।
|
[
"असत्य",
"सत्य"
] | 1 |
true-or false
|
grade6
|
natural science
|
earth-science
|
Astronomy
|
Analyze data to compare properties of planets
|
A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
|
The table tells you that the smallest planet is Mercury and that Mercury is made mainly of rock. So, the smallest planet is made mainly of rock.
|
|
संदर्भ: यह जीव नेरियम ओलियंडर है। यह वनस्पति जगत का सदस्य है।
नेरियम ओलियंडर को आम तौर पर ओलियंडर पौधा कहा जाता है। ओलियंडर पौधे कई जानवरों के लिए जहरीले होते हैं। ओलियंडर पौधों में एक ज़हर होता है जो जानवरों को बीमार कर सकता है। यह ज़हर ओलियंडर पौधों को जानवरों द्वारा खाए जाने से बचाने में मदद करता है।
क्या नेरियम ओलियंडर कई कोशिकाओं से बना है?
|
[
"नहीं",
"हाँ"
] | 1 |
yes or no
|
grade5
|
natural science
|
biology
|
Classification
|
Describe, classify, and compare kingdoms
|
In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below shows some traits used to describe each kingdom.
| Bacteria | Archaea | Protists | Fungi | Animals | Plants
How many cells do they have? | one | one | one or many | one or many | many | many
Do their cells have a nucleus? | no | no | yes | yes | yes | yes
Can their cells make food? | some species can | some species can | some species can | no | no | yes
|
Nerium oleander is a plant. Plants are made up of many cells.
|
|
मिसिसिपी की राजधानी क्या है?
|
[
"जैक्सन",
"अटलांटा",
"पोर्टलैंड",
"तल्हासी"
] | 0 |
closed choice
|
grade4
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Southeast
|
Jackson is the capital of Mississippi.
|
||
संदर्भ: लोग समस्याओं का समाधान विकसित करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कर सकते हैं। प्रक्रिया का एक चरण यह परीक्षण करना है कि क्या संभावित समाधान डिज़ाइन की आवश्यकताओं को पूरा करता है।
नीचे दिया गया गद्यांश वर्णन करता है कि किसी समस्या के समाधान का परीक्षण करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कैसे किया गया। गद्यांश पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
लोगान थे। प्लांट में, पानी से रोग पैदा करने वाले बैक्टीरिया को हटाने के लिए एक महंगा फिल्टर इस्तेमाल किया जाता था। लेकिन समय के साथ, फिल्टर बैक्टीरिया से भर जाता। यदि फिल्टर भर जाता, तो पानी जल्दी से आगे नहीं बढ़ पाता। लोगान को यह तय करना था कि कब फिल्टर बहुत अधिक भर जाता है और उसे बदलने की आवश्यकता होती है। इसलिए, अपने निरीक्षण के दौरान, लोगान ने यह माप कर फिल्टर की जाँच की कि पानी कितनी तेज़ी से इससे होकर गुज़रता है।
चित्र: जल उपचार संयंत्र में एक इंजीनियर।
लोगान का परीक्षण निम्नलिखित में से क्या दिखा सकता है?
|
[
"क्या फिल्टर भर गया था",
"फ़िल्टर किए जाने से पहले पानी में बैक्टीरिया की मात्रा",
"क्या एक सस्ता फिल्टर अधिक बार भर जाता"
] | 0 |
closed choice
|
grade7
|
natural science
|
science-and-engineering-practices
|
Engineering practices
|
Evaluate tests of engineering-design solutions
|
People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a bridge for a windy location. She wants to make sure the bridge will not move too much in high wind. So, she builds a smaller prototype, or model, of a bridge. Then, she exposes the prototype to high winds and measures how much the bridge moves.
First, identify what was tested. A test can examine one design, or it may compare multiple prototypes to each other. In the test described above, the engineer tested a prototype of a bridge in high wind.
Then, identify what the test measured. One of the criteria for the bridge was that it not move too much in high winds. The test measured how much the prototype bridge moved.
Tests can show how well one or more designs meet the criteria. The test described above can show whether the bridge would move too much in high winds.
| ||
यह कपड़े का हैंगर किस सामग्री से बना है?
|
[
"कार्डबोर्ड",
"लकड़ी"
] | 1 |
closed choice
|
grade2
|
natural science
|
physics
|
Materials
|
Identify multiple materials in objects
|
A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood.
|
Look at the picture of the clothes hanger.
The clothes hanger is made of two different materials. The hook is made of metal. The rest of the hanger is made of wood.
|
|
नेवादा की राजधानी क्या है?
|
[
"लास वेगास",
"कार्सन सिटी",
"फीनिक्स",
"तुलसा"
] | 1 |
closed choice
|
grade4
|
social science
|
geography
|
State capitals
|
Identify state capitals of the West
|
Carson City is the capital of Nevada.
|
||
संदर्भ: नीचे दिया गया गद्यांश एक प्रयोग का वर्णन करता है। गद्यांश को पढ़ें और फिर नीचे दिए गए निर्देशों का पालन करें।
प्रेस्टन ने छह टेस्ट ट्यूबों में से प्रत्येक में एक दो इंच का स्टील का कील डाला। उसने तीन टेस्ट ट्यूब में पानी और अन्य तीन में सिरका मिलाया। प्रत्येक टेस्ट ट्यूब में, उसने कील को समान मात्रा के तरल से पूरी तरह ढक दिया। प्रेस्टन ने हर दिन एक ही समय पर कीलों में जंग की जांच की। उसने रिकॉर्ड किया कि प्रत्येक कील को पूरी तरह जंग से ढकने में कितने दिन लगे। फिर, उसने कीलों को पानी में जंग लगने में लगने वाले दिनों की संख्या की तुलना सिरके में जंग लगने में लगने वाले दिनों की संख्या से की।
चित्र: जंग लगे कीलों के ढेर पर एक नया स्टील का कील।
उस प्रश्न की पहचान करें जिसका प्रेस्टन का प्रयोग सबसे अच्छा उत्तर दे सकता है।
|
[
"क्या सिरके की तुलना में स्टील की कीलों को पानी में जंग लगने में कम दिन लगते हैं",
"Do steel nails rust in fewer days when submerged in a large volume of liquid compared to a small volume?"
] | 0 |
closed choice
|
grade6
|
natural science
|
science-and-engineering-practices
|
Designing experiments
|
Identify the experimental question
|
Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was grown in sandy soil, and the other was grown in clay soil. Then, the height of each plant was measured.
First, identify the part of the experiment that was tested. The part of an experiment that is tested usually involves the part of the experimental setup that is different or changed. In the experiment described above, each group of plants was grown in a different type of soil. So, the effect of growing plants in different soil types was tested.
Then, identify the part of the experiment that was measured. The part of the experiment that is measured may include measurements and calculations. In the experiment described above, the heights of the plants in each group were measured.
Experiments can answer questions about how the part of the experiment that is tested affects the part that is measured. So, the experiment described above can answer questions about how soil type affects plant height.
Examples of questions that this experiment can answer include:
Does soil type affect the height of daffodil plants?
Do daffodil plants in sandy soil grow taller than daffodil plants in clay soil?
Are daffodil plants grown in sandy soil shorter than daffodil plants grown in clay soil?
| ||
उत्तरी कैरोलिना की राजधानी क्या है?
|
[
"मिल्वौकी",
"रैले",
"बोइस",
"जैक्सन"
] | 1 |
closed choice
|
grade4
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Southeast
|
Raleigh is the capital of North Carolina.
|
||
कौन सा महासागर हाइलाइट किया गया है?
|
[
"दक्षिणी महासागर",
"प्रशांत महासागर",
"अटलांटिक महासागर",
"हिंद महासागर"
] | 1 |
closed choice
|
grade7
|
social science
|
geography
|
Physical Geography
|
Oceans and continents
|
Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean.
|
This is the Pacific Ocean.
|
|
संदर्भ: नीचे दी गई छवियाँ चुम्बकों के दो जोड़े दिखाती हैं। अलग-अलग जोड़ों में चुम्बक एक दूसरे को प्रभावित नहीं करते हैं। दिखाए गए सभी चुम्बक एक ही पदार्थ से बने हैं।
प्रत्येक जोड़े में चुम्बकों के बीच चुंबकीय बल के बारे में सोचें। निम्नलिखित में से कौन सा कथन सत्य है?
|
[
"जोड़ी 1 में चुंबकीय बल कमज़ोर है।",
"दोनों जोड़ों में चुंबकीय बल की ताकत समान है।",
"जोड़ी 2 में चुंबकीय बल कमज़ोर है।"
] | 0 |
closed choice
|
grade4
|
natural science
|
physics
|
Magnets
|
Compare strengths of magnetic forces
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You can change the strength of a magnetic force between two magnets by changing the distance between them. The magnetic force is weaker when the magnets are farther apart.
|
Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2.
|
|
इनमें से कौन सा महासागर प्रधान मध्याह्न रेखा को काटता है?
|
[
"अटलांटिक महासागर",
"हिंद महासागर",
"प्रशांत महासागर"
] | 0 |
closed choice
|
grade4
|
social science
|
geography
|
Maps
|
Use lines of latitude and longitude
|
Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latitude. We start counting degrees from there.
Lines north of the equator are labeled N for north. Lines south of the equator are labeled S for south. Lines of latitude are also called parallels because each line is parallel to the equator.
Lines of longitude are also called meridians. They show how far east or west a place is. We use degrees to help describe how far a place is from the prime meridian. The prime meridian is the line located at 0° longitude. Lines west of the prime meridian are labeled W. Lines east of the prime meridian are labeled E. Meridians meet at the north and south poles.
The equator goes all the way around the earth, but the prime meridian is different. It only goes from the North Pole to the South Pole on one side of the earth. On the opposite side of the globe is another special meridian. It is labeled both 180°E and 180°W.
Together, lines of latitude and lines of longitude form a grid. You can use this grid to find the exact location of a place.
|
The prime meridian is the line at 0° longitude. It intersects the Atlantic Ocean. It does not intersect the Pacific Ocean or the Indian Ocean.
|
|
संदर्भ: फ्लोराइट के निम्नलिखित गुण हैं:
प्रकृति में पाया जाता है
ठोस
शुद्ध पदार्थ
जीवित चीजों द्वारा नहीं बनाया गया
निश्चित क्रिस्टल संरचना
चमकदार चमक
क्या फ्लोराइट एक खनिज या चट्टान है?
|
[
"चट्टान",
"खनिज"
] | 1 |
closed choice
|
grade8
|
natural science
|
earth-science
|
Rocks and minerals
|
Identify rocks and minerals
|
Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed crystal structure. | Yes | No
You can use these properties to tell whether a substance is a mineral, a rock, or neither.
Look closely at the last three properties:
Minerals and rocks are not made by organisms.
Organisms make their own body parts. For example, snails and clams make their shells. Because they are made by organisms, body parts cannot be minerals or rocks.
Humans are organisms too. So, substances that humans make by hand or in factories are not minerals or rocks.
A mineral is a pure substance, but a rock is not.
A pure substance is made of only one type of matter. Minerals are pure substances, but rocks are not. Instead, all rocks are mixtures.
A mineral has a fixed crystal structure, but a rock does not.
The crystal structure of a substance tells you how the atoms or molecules in the substance are arranged. Different types of minerals have different crystal structures, but all minerals have a fixed crystal structure. This means that the atoms and molecules in different pieces of the same type of mineral are always arranged the same way.
However, rocks do not have a fixed crystal structure. So, the arrangement of atoms or molecules in different pieces of the same type of rock may be different!
|
Fluorite has all the properties of a mineral. So, fluorite is a mineral.
|
|
कनेक्टिकट की राजधानी क्या है?
|
[
"न्यू हेवन",
"सेंट लुइस",
"ब्रिजपोर्ट",
"हार्टफोर्ड"
] | 3 |
closed choice
|
grade4
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Northeast
|
Hartford is the capital of Connecticut.
|
||
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन तीन वस्तुओं में कौन सा गुण समान है?
|
[
"पारभासी",
"कठोर",
"मुलायम"
] | 1 |
closed choice
|
grade3
|
natural science
|
physics
|
Materials
|
Compare properties of objects
|
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups.
|
Look at each object.
For each object, decide if it has that property.
A hard object does not change shape when pressed or squeezed. All three objects are hard.
A translucent object lets light through. But you cannot see clearly through a translucent object. The apple seeds and the canoe are not translucent.
A soft object changes shape when pressed or squeezed. None of the objects are soft.
The property that all three objects have in common is hard.
|
|
किस देश को हाइलाइट किया गया है?
|
[
"सेंट लूसिया",
"क्यूबा",
"त्रिनिदाद और टोबैगो",
"जमैका"
] | 1 |
closed choice
|
grade7
|
social science
|
geography
|
The Americas: geography
|
Identify and select countries of the Caribbean
|
This country is Cuba.
Does Cuba have any territorial disputes?
Cuba claims to own Guantanamo Bay Naval Base, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States controls the area and uses it as a military base and prison. A treaty in 1903 gave the U.S. the right to rent the land from Cuba. But today, Cuba says that it had no choice but to accept the treaty. It wants the United States to leave the area and does not accept the rent money sent by the United States each year.
|
||
कौन सा महाद्वीप हाइलाइट किया गया है?
|
[
"अंटार्कटिका",
"दक्षिण अमेरिका",
"अफ्रीका",
"यूरोप"
] | 2 |
closed choice
|
grade7
|
social science
|
geography
|
Physical Geography
|
Oceans and continents
|
A continent is one of the major land masses on the earth. Most people say there are seven continents.
|
This continent is Africa.
|
|
कॉलम 2 में कौन सा i है?
|
[
"तालाब",
"फास्ट-फूड रेस्तरां",
"पुलिस विभाग",
"किराने की दुकान"
] | 1 |
closed choice
|
grade2
|
social science
|
geography
|
Geography
|
Use a letter-number grid
|
A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers.
|
The fast-food restaurant is in column 2.
|
|
हवाई की राजधानी क्या है?
|
[
"सांता फ़े",
"होनोलुलु",
"हिलो",
"फ़ीनिक्स"
] | 1 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify the 50 state capitals
|
Honolulu is the capital of Hawaii.
|
||
आयोवा की राजधानी क्या है?
|
[
"सीडर रैपिड्स",
"डेस मोइनेस",
"स्प्रिंगफील्ड",
"सेंट पॉल"
] | 1 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Midwest
|
Des Moines is the capital of Iowa.
|
||
संदर्भ: एक टो ट्रक एक कार को आगे बढ़ाता है। ट्रक से एक बल कार को सड़क पर नीचे की ओर खींचता है।
इस खिंचाव की दिशा क्या है?
|
[
"टो ट्रक से दूर",
"टो ट्रक की ओर"
] | 1 |
closed choice
|
grade4
|
natural science
|
physics
|
Force and motion
|
Identify directions of forces
|
A force is a push or a pull that one object applies to another. Every force has a direction.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling.
|
The tow truck pulls the car. The direction of the pull is toward the tow truck.
|
|
कौन सा महासागर हाइलाइट किया गया है?
|
[
"हिंद महासागर",
"दक्षिणी महासागर",
"आर्कटिक महासागर",
"अटलांटिक महासागर"
] | 0 |
closed choice
|
grade7
|
social science
|
geography
|
Physical Geography
|
Oceans and continents
|
Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean.
|
This is the Indian Ocean.
|
|
संदर्भ: गायों के एक समूह में, कुछ व्यक्तियों का रंग गहरा होता है और अन्य में सफ़ेद धब्बे होते हैं। इस समूह में, कोट पैटर्न विशेषता के लिए जीन में दो एलील होते हैं। सफ़ेद धब्बों (a) के लिए एलील, ठोस रंग (A) के लिए एलील के लिए अप्रभावी है।
यह पुनेट वर्ग दो गायों के बीच एक क्रॉस दिखाता है।
सफ़ेद धब्बों वाली संतानों और ठोस रंग वाली संतानों का अपेक्षित अनुपात क्या है? सबसे संभावित अनुपात चुनें।
|
[
"4:0",
"3:1",
"1:3",
"2:2",
"0:4"
] | 4 |
closed choice
|
grade8
|
natural science
|
biology
|
Genes to traits
|
Use Punnett squares to calculate ratios of offspring types
|
Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to appear as the organism's phenotype.
If an organism's genotype has at least one dominant allele for a gene, the organism's phenotype will be the dominant allele's version of the gene's trait.
If an organism's genotype has only recessive alleles for a gene, the organism's phenotype will be the recessive allele's version of the gene's trait.
A Punnett square shows what types of offspring a cross can produce. The expected ratio of offspring types compares how often the cross produces each type of offspring, on average. To write this ratio, count the number of boxes in the Punnett square representing each type.
For example, consider the Punnett square below.
| F | f
F | FF | Ff
f | Ff | ff
There is 1 box with the genotype FF and 2 boxes with the genotype Ff. So, the expected ratio of offspring with the genotype FF to those with Ff is 1:2.
|
To determine how many boxes in the Punnett square represent offspring with white spots or solid coloring, consider whether each phenotype is the dominant or recessive allele's version of the coat pattern trait. The question tells you that the a allele, which is for white spots, is recessive to the A allele, which is for solid coloring.
White spots is the recessive allele's version of the coat pattern trait. A cow with the recessive version of the coat pattern trait must have only recessive alleles for the coat pattern gene. So, offspring with white spots must have the genotype aa.
There are 0 boxes in the Punnett square with the genotype aa.
Solid coloring is the dominant allele's version of the coat pattern trait. A cow with the dominant version of the coat pattern trait must have at least one dominant allele for the coat pattern gene. So, offspring with solid coloring must have the genotype AA or Aa.
All 4 boxes in the Punnett square have the genotype AA or Aa.
So, the expected ratio of offspring with white spots to offspring with solid coloring is 0:4. This means that, based on the Punnett square, this cross will never produce offspring with white spots. Instead, this cross is expected to always produce offspring with solid coloring.
|
|
क्या हिमखंड एक ठोस, द्रव या गैस है?
|
[
"एक ठोस",
"एक द्रव",
"एक गैस"
] | 0 |
closed choice
|
grade4
|
natural science
|
physics
|
States of matter
|
Identify and sort solids, liquids, and gases
|
Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a solid. Also, some solids are very small. A grain of sand is a solid.
When matter is a liquid, it has a definite volume but not a definite shape. So, a liquid has a size of its own, but it does not have a shape of its own. Think about pouring juice from a bottle into a cup. The juice still takes up the same amount of space, but it takes the shape of the bottle.
Some liquids are thicker than others. Honey and milk are both liquids. But pouring honey takes more time than pouring milk.
When matter is a gas, it does not have a definite volume or a definite shape. A gas expands, or gets bigger, until it completely fills a space. A gas can also get smaller if it is squeezed into a smaller space.
Many gases are invisible. The oxygen you breathe is a gas. The helium in a balloon is also a gas.
|
An icicle is a solid. An icicle can melt. But when an icicle is frozen, it has a size and shape of its own.
|
|
संदर्भ: नीचे दिए गए आरेखों में समान बंद, कठोर कंटेनरों में गैस के दो शुद्ध नमूने दिखाए गए हैं। प्रत्येक रंगीन गेंद एक गैस कण को दर्शाती है। दोनों नमूनों में कणों की संख्या समान है।
प्रत्येक नमूने में कणों की औसत गतिज ऊर्जा की तुलना करें। किस नमूने का तापमान अधिक है?
|
[
"नमूना B",
"नमूना A",
"दोनों में से कोई नहीं; नमूनों का तापमान समान है"
] | 0 |
closed choice
|
grade7
|
natural science
|
physics
|
Particle motion and energy
|
Identify how particle motion affects temperature and pressure
|
The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of each particle in the substance and the higher the average speed of the particles, the higher their average kinetic energy.
|
The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sample B must have the higher temperature.
|
|
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन तीन वस्तुओं में कौन सी विशेषता समान है?
|
[
"उछालभरी",
"नीली",
"नाजुक"
] | 0 |
closed choice
|
grade3
|
natural science
|
physics
|
Materials
|
Compare properties of objects
|
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups.
|
Look at each object.
For each object, decide if it has that property.
Blue is a color.
This color is blue. The basketball and the pogo stick are not blue.
A bouncy object will bounce back from the floor if you drop it. All three objects are bouncy.
A fragile object will break into pieces if you drop it. None of the objects are fragile.
The property that all three objects have in common is bouncy.
|
|
संदर्भ: लीफ-मिमिक कैटीडिड ऐसे कीट हैं जो उष्णकटिबंधीय जंगलों जैसी जगहों पर रहते हैं। यह कैटीडिड हरी पत्तियों के बीच छिपने के लिए अनुकूलित है।
चित्र: लीफ-मिमिक कैटीडिड।
कौन सा जानवर हरी पत्तियों के बीच छिपने के लिए भी अनुकूलित है?
|
[
"नीला ज़हर डार्ट मेंढक",
"शील्ड मैंटिस"
] | 1 |
closed choice
|
grade3
|
natural science
|
biology
|
Adaptations
|
Animal adaptations: skins and body coverings
|
An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal stay warm. Skin with sharp spines might help an animal defend itself against predators.
|
Look at the picture of the leaf-mimic katydid.
The leaf-mimic katydid has a green leaf-shaped body. It is adapted to be camouflaged among green leaves. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The shield mantis has a green leaf-shaped body. It is adapted to be camouflaged among green leaves.
The blue poison dart frog has brightly colored skin. It is not adapted to be camouflaged among green leaves.
|
|
संदर्भ: ये एशिया के सुमात्रा द्वीप पर वर्षा वनों में रहते हैं। वे भोजन और आश्रय की तलाश में पेड़ों पर चढ़ते हैं। ओरंगुटान के हाथ और पैर पेड़ों पर चढ़ने के लिए अनुकूलित हैं।
चित्र: सुमात्रा ओरंगुटान।
कौन सा जानवर पेड़ों पर चढ़ने के लिए भी अनुकूलित है?
|
[
"ग्रेवी का ज़ेबरा",
"नंगे कान वाला गिलहरी बंदर"
] | 1 |
closed choice
|
grade3
|
natural science
|
biology
|
Adaptations
|
Animal adaptations: feet and limbs
|
An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur might help an animal walk on cold, snowy ground.
|
Look at the picture of the Sumatran orangutan.
The Sumatran orangutan has long fingers and toes. It is adapted for climbing trees. The Sumatran orangutan uses its long fingers and toes to hold on to branches while climbing.
Now look at each animal. Figure out which animal has a similar adaptation.
The bare-eared squirrel monkey has long fingers and toes. It is adapted for climbing trees.
The Grevy's zebra has four hoofed feet. It is not adapted for climbing trees. The Grevy's zebra uses its feet to walk and run.
|
|
रोड आइलैंड की राजधानी क्या है?
|
[
"न्यूपोर्ट",
"प्रोविडेंस",
"हार्टफोर्ड",
"कॉनकॉर्ड"
] | 1 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Northeast
|
Providence is the capital of Rhode Island.
|
||
संदर्भ: दो चुम्बक दिखाए अनुसार रखे गए हैं।
क्या ये चुम्बक एक दूसरे को आकर्षित करेंगे या प्रतिकर्षित करेंगे?
|
[
"प्रतिकर्षित करेंगे",
"आकर्षित करेंगे"
] | 0 |
closed choice
|
grade5
|
natural science
|
physics
|
Magnets
|
Identify magnets that attract or repel
|
Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (S).
Here are some examples of magnets. Their poles are shown in different colors and labeled.
Whether a magnet attracts or repels other magnets depends on the positions of its poles.
If opposite poles are closest to each other, the magnets attract. The magnets in the pair below attract.
If the same, or like, poles are closest to each other, the magnets repel. The magnets in both pairs below repel.
|
To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other.
|
|
संदर्भ: चित्र: माउंट रेनियर राष्ट्रीय उद्यान।
माउंट रेनियर राष्ट्रीय उद्यान वाशिंगटन राज्य में एक टैगा पारिस्थितिकी तंत्र है।
माउंट रेनियर राष्ट्रीय उद्यान पारिस्थितिकी तंत्र का बेहतर वर्णन कौन करता है?
|
[
"इसमें लंबी, ठंडी सर्दियाँ होती हैं। इसकी मिट्टी भी पोषक तत्वों में खराब है।",
"इसमें छोटी, ठंडी गर्मियाँ होती हैं। इसकी मिट्टी भी पोषक तत्वों से भरपूर है।"
] | 0 |
closed choice
|
grade4
|
natural science
|
biology
|
Ecosystems
|
Describe ecosystems
|
An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestrial ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil
the organisms that live there
|
A taiga is a type of ecosystem. Taigas have the following features: long, cold winters and short, cool summers, many evergreen trees, and soil that is poor in nutrients. So, Mount Rainier National Park has long, cold winters. It also has soil that is poor in nutrients.
|
|
वर्जीनिया की राजधानी क्या है?
|
[
"टोपेका",
"अटलांटा",
"रिचमंड",
"नैशविले"
] | 2 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Southeast
|
Richmond is the capital of Virginia.
|
||
दिखाई गई कॉलोनी का नाम क्या है?
|
[
"न्यू जर्सी",
"पेंसिल्वेनिया",
"वर्जीनिया",
"न्यूयॉर्क"
] | 1 |
closed choice
|
grade8
|
social science
|
us-history
|
Colonial America
|
Identify the Thirteen Colonies
|
The colony is Pennsylvania.
|
||
कैनसस की राजधानी क्या है?
|
[
"नैशविले",
"विचिटा",
"टोपेका",
"कैनसस सिटी"
] | 2 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Midwest
|
Topeka is the capital of Kansas.
|
||
संदर्भ: चित्र: कैलिफोर्निया की सेंट्रल वैली।
कैलिफोर्निया की सेंट्रल वैली में कई फसलें उगाई जाती हैं। ठंड के महीनों में घाटी में अक्सर घना कोहरा छा जाता है।
संकेत: मौसम वह होता है जो किसी निश्चित स्थान और समय पर वातावरण जैसा होता है। जलवायु किसी निश्चित स्थान पर मौसम का पैटर्न होता है।
क्या यह अंश मौसम या जलवायु का वर्णन करता है?
|
[
"जलवायु",
"मौसम"
] | 0 |
closed choice
|
grade6
|
natural science
|
earth-science
|
Weather and climate
|
Weather and climate around the world
|
The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of weather in a certain place. For example, summer temperatures in New York are usually higher than winter temperatures.
|
Read the passage carefully.
Many crops are grown in California's Central Valley. Thick fog often fills the valley during the cold winter months.
The underlined part of the passage tells you about the usual pattern of cloud cover in the Central Valley. This passage does not describe what the weather is like on a particular day. So, this passage describes the climate.
|
|
संदर्भ: लोग समस्याओं का समाधान विकसित करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कर सकते हैं। प्रक्रिया का एक चरण यह परीक्षण करना है कि क्या संभावित समाधान डिज़ाइन की आवश्यकताओं को पूरा करता है।
नीचे दिया गया गद्यांश वर्णन करता है कि किसी समस्या के समाधान का परीक्षण करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कैसे किया गया। गद्यांश पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
स्टीव थे। प्लांट में, पानी से रोग पैदा करने वाले बैक्टीरिया को हटाने के लिए एक महंगा फ़िल्टर इस्तेमाल किया जाता था। लेकिन समय के साथ, फ़िल्टर बैक्टीरिया से भर जाता। यदि फ़िल्टर भर जाता, तो पानी जल्दी से नहीं बह पाता। स्टीव को यह तय करना था कि कब फ़िल्टर बहुत भर जाता है और उसे बदलने की आवश्यकता होती है। इसलिए, अपने निरीक्षण के दौरान, स्टीव ने पानी के कितनी तेज़ी से बहते हैं, यह मापकर फ़िल्टर की जाँच की।
चित्र: जल उपचार संयंत्र में एक इंजीनियर।
स्टीव का परीक्षण निम्न में से क्या दिखा सकता है?
|
[
"फ़िल्टर किए जाने से पहले पानी में बैक्टीरिया की मात्रा",
"क्या एक सस्ता फ़िल्टर अधिक बार भर जाता",
"क्या फ़िल्टर भर गया था"
] | 2 |
closed choice
|
grade7
|
natural science
|
science-and-engineering-practices
|
Engineering practices
|
Evaluate tests of engineering-design solutions
|
People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a bridge for a windy location. She wants to make sure the bridge will not move too much in high wind. So, she builds a smaller prototype, or model, of a bridge. Then, she exposes the prototype to high winds and measures how much the bridge moves.
First, identify what was tested. A test can examine one design, or it may compare multiple prototypes to each other. In the test described above, the engineer tested a prototype of a bridge in high wind.
Then, identify what the test measured. One of the criteria for the bridge was that it not move too much in high winds. The test measured how much the prototype bridge moved.
Tests can show how well one or more designs meet the criteria. The test described above can show whether the bridge would move too much in high winds.
| ||
संदर्भ: नीचे दिए गए प्रश्न का उत्तर देने के लिए डेटा का उपयोग करें।
हमारे सौर मंडल के बारे में निम्नलिखित कथन सत्य है या असत्य?
पृथ्वी सबसे बड़ा ग्रह है जो मुख्य रूप से चट्टान से बना है।
|
[
"सत्य",
"असत्य"
] | 0 |
true-or false
|
grade8
|
natural science
|
earth-science
|
Astronomy
|
Analyze data to compare properties of planets
|
A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For example, the volume of Jupiter is 1,430,000,000,000,000 km^3. In scientific notation, Jupiter's volume is written as 1.43 x 10^15 km^3.
To compare two numbers written in scientific notation, compare their exponents. The bigger the exponent is, the bigger the number is. For example:
1.43 x 10^15 is larger than 1.43 x 10^12
If their exponents are equal, compare the first numbers. For example:
1.43 x 10^15 is larger than 1.25 x 10^15
|
The table tells you that Mercury, Venus, Earth, and Mars are the planets made mainly of rock. Of these planets, Earth has the volume with the largest exponent. So, Earth is the largest planet that is made mainly of rock.
|
|
संदर्भ: मोमबत्ती के मोम में निम्नलिखित गुण होते हैं:
कोई निश्चित क्रिस्टल संरचना नहीं
कारखाने में बनाया गया
विभिन्न वसाओं का मिश्रण
ठोस
क्या मोमबत्ती का मोम एक खनिज है?
|
[
"नहीं",
"हाँ"
] | 0 |
yes or no
|
grade6
|
natural science
|
earth-science
|
Rocks and minerals
|
Identify rocks and minerals
|
Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last three properties:
A mineral is not made by organisms.
Organisms make their own body parts. For example, snails and clams make their shells. Because they are made by organisms, body parts cannot be minerals.
Humans are organisms too. So, substances that humans make by hand or in factories cannot be minerals.
A mineral is a pure substance.
A pure substance is made of only one type of matter. All minerals are pure substances.
A mineral has a fixed crystal structure.
The crystal structure of a substance tells you how the atoms or molecules in the substance are arranged. Different types of minerals have different crystal structures, but all minerals have a fixed crystal structure. This means that the atoms or molecules in different pieces of the same type of mineral are always arranged the same way.
|
Candle wax does not have all the properties of a mineral. So, candle wax is not a mineral.
|
|
संदर्भः लोग समस्याओं का समाधान विकसित करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कर सकते हैं। इस प्रक्रिया का एक चरण यह परीक्षण करना है कि संभावित समाधान डिज़ाइन की आवश्यकताओं को पूरा करता है या नहीं।
नीचे दिया गया गद्यांश वर्णन करता है कि किसी समस्या के समाधान का परीक्षण करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कैसे किया गया। गद्यांश को पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
हेरोल्ड एक मैकेनिकल इंजीनियर थे जो तापमान, वर्षा और हवा की गति को रिकॉर्ड करने के लिए डिज़ाइन कर रहे थे। मौसम स्टेशन का उपयोग एक ऐसे शहर में किया जाएगा, जहां उच्चतम तापमान 40°C दर्ज किया गया था। हेरोल्ड यह सुनिश्चित करना चाहता था कि मौसम स्टेशन असामान्य रूप से गर्म मौसम में भी काम करेगा।
इसलिए, उन्होंने कम नमी और बिना हवा के एक इनडोर परीक्षण कक्ष को 50°C पर सेट किया। उन्होंने मौसम स्टेशन को रात भर कक्ष में छोड़ दिया। अगले दिन, उन्होंने यह देखने के लिए जाँच की कि क्या मौसम स्टेशन ने 50°C पर 24 घंटे के बाद सटीक माप प्रदर्शित किया है।
चित्रः एक मौसम स्टेशन।
हेरोल्ड का परीक्षण निम्नलिखित में से क्या दिखा सकता है?
|
[
"यदि मौसम केंद्र 50°C तापमान पर काम करेगा तो क्या होगा",
"जब हवा चलेगी तो मौसम केंद्र कितनी अच्छी तरह काम करेगा"
] | 0 |
closed choice
|
grade6
|
natural science
|
science-and-engineering-practices
|
Engineering practices
|
Evaluate tests of engineering-design solutions
|
People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a bridge for a windy location. She wants to make sure the bridge will not move too much in high wind. So, she builds a smaller prototype, or model, of a bridge. Then, she exposes the prototype to high winds and measures how much the bridge moves.
First, identify what was tested. A test can examine one design, or it may compare multiple prototypes to each other. In the test described above, the engineer tested a prototype of a bridge in high wind.
Then, identify what the test measured. One of the criteria for the bridge was that it not move too much in high winds. The test measured how much the prototype bridge moved.
Tests can show how well one or more designs meet the criteria. The test described above can show whether the bridge would move too much in high winds.
| ||
संदर्भ: गद्यांश को पढ़ें। फिर प्रश्न का उत्तर दें।
अल्कॉन ब्लू तितलियाँ अपने जीवन का पहला भाग कैटरपिलर के रूप में बिताती हैं जो माइर्मिका चींटियों के साथ रहती हैं। जब एक कैटरपिलर चींटियों के साथ रहता है, तो यह एक चींटी की नकल करता है, या होने का दिखावा करता है। कैटरपिलर उनकी गंध की नकल करके चींटियों की नकल कर सकता है। कैटरपिलर ऐसी आवाज़ें भी निकाल सकता है जो उसे रानी चींटी की तरह लगती हैं। रानी चींटियों को घोंसले में किसी भी अन्य चींटियों की तुलना में अधिक भोजन और बेहतर सुरक्षा मिलती है।
इसलिए, जब कैटरपिलर चींटी की नकल करता है, तो चींटियां घोंसले में अन्य चींटियों के बजाय कैटरपिलर को खिलाती हैं और उसकी रक्षा करती हैं।
चित्र: एक अल्कॉन ब्लू कैटरपिलर की देखभाल करने वाली एक माइर्मिका चींटी।
जब एक अल्कॉन ब्लू कैटरपिलर
|
[
"parasitic",
"mutualistic",
"commensal"
] | 0 |
closed choice
|
grade7
|
natural science
|
biology
|
Ecological interactions
|
Classify symbiotic relationships
|
When two organisms of different species interact in a way that affects one or both organisms, they form a symbiotic relationship. The word symbiosis comes from a Greek word that means living together. Scientists define types of symbiotic relationships based on how each organism is affected.
This table lists three common types of symbiotic relationships. It shows how each organism is affected in each type of symbiotic relationship.
Type of symbiotic relationship | Organism of one species... | Organism of the other species...
Commensal | benefits | is not significantly affected
Mutualistic | benefits | benefits
Parasitic | benefits | is harmed (but not usually killed)
|
When an Alcon blue caterpillar lives in a Myrmica ant nest, the caterpillar gets food and protection. So, the caterpillar benefits from its relationship with the ants.
The ants feed and protect the caterpillar instead of other ants in the nest. So, the ants are harmed by their relationship with the caterpillar.
Since the caterpillar benefits and the ants are harmed, a parasitic relationship is formed when an Alcon blue caterpillar lives in a Myrmica ant nest.
|
|
संदर्भ: नीचे दिया गया चित्र दो विलयनों का मॉडल है। प्रत्येक हरी गेंद विलेय के एक कण को दर्शाती है।
किस विलयन में हरे कणों की सांद्रता अधिक है?
|
[
"विलयन B",
"विलयन A",
"दोनों में से कोई नहीं; उनकी सांद्रता समान है"
] | 0 |
closed choice
|
grade7
|
natural science
|
chemistry
|
Solutions
|
Compare concentrations of solutions
|
A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution. In this case, the salt is the solute. The water is the solvent.
The concentration of a solute in a solution is a measure of the ratio of solute to solvent. Concentration can be described in terms of particles of solute per volume of solvent.
concentration = particles of solute / volume of solvent
|
In Solution A and Solution B, the green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per milliliter.
Solution B has more green particles per milliliter. So, Solution B has a higher concentration of green particles.
|
|
तस्वीर को देखिए। कौन सा शब्द इन पक्षियों की आवाज़ का सबसे अच्छा वर्णन करता है?
|
[
"चहचहाना",
"क्वैकिंग",
"पॉपिंग"
] | 0 |
closed choice
|
grade2
|
language science
|
writing-strategies
|
Descriptive details
|
Choose the sensory details that match the picture
|
When you write, you can use sensory details. These sense words help your reader understand what something looks, sounds, tastes, smells, or feels like.
Sensory Category | Description
Sight | These are words like bright, clean, and purple. A reader can imagine looking at these details.
Sound | These are words like hissing, buzzing, and ringing. A reader can imagine hearing these details.
Taste | These are words like juicy, sweet, and burnt. A reader can imagine tasting these details.
Smell | These are words like fruity, sweet, and stinky. A reader can imagine smelling these details.
Touch | These are words like fuzzy, wet, and soft. A reader can imagine feeling these details.
Many sense words can describe more than one sense. For example, soft can describe a touch or a sound. And sweet can describe a taste or a smell.
|
Look at the picture.
The word chirping describes the sound these birds make.
Quacking and popping can also describe sounds. But they do not describe the sounds these birds make.
|
|
संदर्भ: यह दक्षिणी अफ्रीका के रेगिस्तान में रहता है। यह रेतीले रेगिस्तान में छिपने के लिए अनुकूलित है।
चित्र: नामाक्वा गिरगिट।
कौन सा जानवर रेतीले रेगिस्तान में छिपने के लिए भी अनुकूलित है?
|
[
"सींग वाला वाइपर",
"यूरोपीय हरी छिपकली"
] | 0 |
closed choice
|
grade5
|
natural science
|
biology
|
Adaptations
|
Animal adaptations: skins and body coverings
|
An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal stay warm. Skin with sharp spines might help an animal defend itself against predators.
|
Look at the picture of the Namaqua chameleon.
The Namaqua chameleon has sand-colored scales covering its body. It is adapted to be camouflaged in a sandy desert. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The horned viper has sand-colored scales covering its body. It is adapted to be camouflaged in a sandy desert.
The European green lizard has a green, brown, and yellow body. It is not adapted to be camouflaged in a sandy desert.
|
|
वर्जीनिया की राजधानी क्या है?
|
[
"रिचमंड",
"बैटन रूज",
"कैनसस सिटी",
"साल्ट लेक सिटी"
] | 0 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Southeast
|
Richmond is the capital of Virginia.
|
||
संदर्भ: नीचे दिया गया गद्यांश एक प्रयोग का वर्णन करता है। गद्यांश को पढ़ें और वर्णित चरों के बारे में सोचें।
डंकन ने अपने पीछे के बरामदे में दस पौधे उगाए। उसने प्रत्येक पौधे को उसके अपने गमले में उगाया, और प्रत्येक गमला एक ही आकार और आकृति का था। डंकन ने देखा कि उसके पौधों में बहुत अधिक पत्तियाँ नहीं उगती हैं, और वह देखना चाहता था कि क्या केंचुए उन्हें अधिक बढ़ने में मदद कर सकते हैं। इस विचार का परीक्षण करने के लिए, डंकन ने अपने दस पौधों को दो बराबर समूहों में विभाजित किया। एक समूह के लिए, उसने प्रत्येक गमले की मिट्टी में तीन केंचुए डाले। उसने दूसरे समूह के गमलों में कोई केंचुआ नहीं डाला।
दो महीने बाद, डंकन ने दस पौधों में से प्रत्येक पर पत्तियों की संख्या गिनी। उसने प्रत्येक समूह के पौधों पर पत्तियों की संख्या की तुलना की।
संकेत: एक स्वतंत्र चर वह चर होता है जिसका प्रभाव आप जाँच रहे हैं। एक आश्रित चर वह चर होता है जिसे आप मापते हैं।
चित्र: पुदीने के पौधे।
इस प्रयोग में निम्न में से कौन एक स्वतंत्र चर था?
|
[
"केंचुओं की संख्या",
"पत्तियों की संख्या"
] | 0 |
closed choice
|
grade6
|
natural science
|
science-and-engineering-practices
|
Designing experiments
|
Identify independent and dependent variables
|
Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato plants. Then, you add fertilizer to the soil of the plants in one group but not in the other group. Later, you measure the effect of the fertilizer by counting the number of tomatoes on each plant.
In this experiment, the amount of fertilizer added to the soil and the number of tomatoes were both variables.
The amount of fertilizer added to the soil was an independent variable because it was the variable whose effect you were investigating. This type of variable is called independent because its value does not depend on what happens after the experiment begins. Instead, you decided to give fertilizer to some plants and not to others.
The number of tomatoes was a dependent variable because it was the variable you were measuring. This type of variable is called dependent because its value can depend on what happens in the experiment.
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संदर्भ: दो चुम्बक दिखाए अनुसार रखे गए हैं।
क्या ये चुम्बक एक दूसरे को आकर्षित करेंगे या प्रतिकर्षित करेंगे?
|
[
"प्रतिकर्षित करेंगे",
"आकर्षित करेंगे"
] | 1 |
closed choice
|
grade4
|
natural science
|
physics
|
Magnets
|
Identify magnets that attract or repel
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The north pole of each magnet is labeled N, and the south pole is labeled S.
If opposite poles are closest to each other, the magnets attract. The magnets in the pair below attract.
If the same, or like, poles are closest to each other, the magnets repel. The magnets in both pairs below repel.
|
To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other.
|
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संदर्भ: मछलियाँ पानी के अंदर रहती हैं। उनके पास पंख होते हैं, अंग नहीं।
मछलियाँ ठंडे खून वाली होती हैं। ठंडे खून वाले जानवरों का शरीर का तापमान उनके पर्यावरण पर निर्भर करता है।
बैंगगाई कार्डिनलफ़िश एक मछली का उदाहरण है।
नीचे मछली का चयन करें।
|
[
"जल भैंस",
"समुद्री घोड़ा",
"पश्चिमी टोड",
"टोके गेको"
] | 1 |
closed choice
|
grade4
|
natural science
|
biology
|
Classification
|
Identify mammals, birds, fish, reptiles, and amphibians
|
Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals.
|
A tokay gecko is a reptile. It has scaly, waterproof skin.
Many geckos have special pads on their toes. The pads help them climb up plants and rocks.
A water buffalo is a mammal. It has hair and feeds its young milk.
Water buffaloes live in Asia. Some people raise water buffaloes for their milk.
A western toad is an amphibian. It has moist skin and begins its life in water.
Toads do not have teeth! They swallow their food whole.
A seahorse is a fish. It lives underwater. It has fins, not limbs.
Seahorses live in shallow, warm water. They can use their tails to hold on to plants.
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संदर्भ: नीचे दिया गया चित्र दो विलयनों का मॉडल है। प्रत्येक नीली गेंद विलेय के एक कण को दर्शाती है।
किस विलयन में नीले कणों की सांद्रता अधिक है?
|
[
"दोनों में से कोई नहीं; उनकी सांद्रता समान है",
"विलयन B",
"विलयन A"
] | 0 |
closed choice
|
grade6
|
natural science
|
chemistry
|
Solutions
|
Compare concentrations of solutions
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A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution. In this case, the salt is the solute. The water is the solvent.
The concentration of a solute in a solution is a measure of the ratio of solute to solvent. Concentration can be described in terms of particles of solute per volume of solvent.
concentration = particles of solute / volume of solvent
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In Solution A and Solution B, the blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
Solution A and Solution B have the same number of blue particles per milliliter. So, their concentrations are the same.
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मैसाचुसेट्स की राजधानी क्या है?
|
[
"प्लायमाउथ",
"कैम्ब्रिज",
"मोंटपेलियर",
"बोस्टन"
] | 3 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Northeast
|
Boston is the capital of Massachusetts.
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संदर्भ: नीचे दी गई छवियाँ चुम्बकों के दो जोड़े दिखाती हैं। अलग-अलग जोड़ों में चुम्बक एक दूसरे को प्रभावित नहीं करते हैं। दिखाए गए सभी चुम्बक एक ही सामग्री से बने हैं, लेकिन उनमें से कुछ अलग-अलग आकार के हैं।
प्रत्येक जोड़े में चुम्बकों के बीच चुंबकीय बल के बारे में सोचें। निम्नलिखित में से कौन सा कथन सत्य है?
|
[
"दोनों जोड़ों में चुंबकीय बल का परिमाण समान है।",
"जोड़ी 2 में चुंबकीय बल का परिमाण अधिक है।",
"जोड़ी 1 में चुंबकीय बल का परिमाण अधिक है।"
] | 2 |
closed choice
|
grade6
|
natural science
|
physics
|
Velocity, acceleration, and forces
|
Compare magnitudes of magnetic forces
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You can change the magnitude of a magnetic force between two magnets by using magnets of different sizes. The magnitude of the magnetic force is greater when the magnets are larger.
|
The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is greater in Pair 1 than in Pair 2.
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संदर्भ: नीचे दी गई छवियाँ चुम्बकों के दो जोड़े दिखाती हैं। अलग-अलग जोड़ों में चुम्बक एक दूसरे को प्रभावित नहीं करते हैं। दिखाए गए सभी चुम्बक एक ही पदार्थ से बने हैं।
प्रत्येक जोड़े में चुम्बकों के बीच चुंबकीय बल के बारे में सोचें। निम्नलिखित में से कौन सा कथन सत्य है?
|
[
"दोनों जोड़ों में चुंबकीय बल की ताकत समान है।",
"जोड़ी 1 में चुंबकीय बल अधिक मजबूत है।",
"जोड़ी 2 में चुंबकीय बल अधिक मजबूत है।"
] | 0 |
closed choice
|
grade4
|
natural science
|
physics
|
Magnets
|
Compare strengths of magnetic forces
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
|
Distance affects the strength of the magnetic force. But the distance between the magnets in Pair 1 and in Pair 2 is the same.
So, the strength of the magnetic force is the same in both pairs.
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संदर्भ: संयुक्त राज्य अमेरिका के नाम के बारे में सोचें। जैसा कि नाम से पता चलता है, देश में एक संयुक्त राष्ट्रीय सरकार और राज्य सरकारों का संग्रह दोनों हैं। निम्नलिखित प्रश्नों में, आप राष्ट्रीय सरकार और राज्य सरकारों के बीच संबंधों के बारे में जानेंगे। आप यह भी जानेंगे कि राज्य और स्थानीय सरकारें कैसे काम करती हैं।
कई देशों में राष्ट्रीय सरकार और राज्य सरकारें दोनों होती हैं। हालांकि, ये देश राष्ट्रीय और राज्य सरकारों के बीच सत्ता को अलग-अलग तरीके से बांटते हैं। नीचे दी गई तालिका सत्ता को विभाजित करने की तीन अलग-अलग प्रणालियों का वर्णन करती है। तालिका देखें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
संयुक्त राज्य अमेरिका में संघीय प्रणाली है। इन परिभाषाओं के आधार पर, इनमें से कौन सा कथन सबसे अधिक संभावना एक ऐसे व्यक्ति द्वारा किया जाएगा जो एक संघीय प्रणाली के तहत रहता है?
|
[
"मैं केवल राज्य की राजनीति पर ध्यान देता हूं क्योंकि राष्ट्रीय सरकार के पास लगभग कोई शक्ति नहीं है।",
"",
"Both my state and national government officials have power over important issues."
] | 2 |
closed choice
|
grade6
|
social science
|
civics
|
Government
|
State and local government
| |||
दिखाई गई कॉलोनी का नाम क्या है?
|
[
"वर्जीनिया",
"मैसाचुसेट्स",
"रोड आइलैंड",
"मैरीलैंड"
] | 2 |
closed choice
|
grade8
|
social science
|
us-history
|
Colonial America
|
Identify the Thirteen Colonies
|
The colony is Rhode Island.
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संदर्भ: नीचे दिया गया गद्यांश एक प्रयोग का वर्णन करता है। गद्यांश को पढ़ें और फिर नीचे दिए गए निर्देशों का पालन करें।
लियोन ने बैक्टीरिया को पोषक तत्वों से भरपूर एक तरल में मिलाया, जहां बैक्टीरिया बढ़ सकते थे। उन्होंने दस कांच के फ्लास्क में से प्रत्येक में मिश्रण के चार औंस डाले। दस में से पांच फ्लास्क में उन्होंने एक चम्मच दालचीनी भी डाली। उन्होंने फ्लास्क में बैक्टीरिया को 37 डिग्री सेल्सियस के कमरे में रात भर बढ़ने दिया। फिर, लियोन ने प्रत्येक फ्लास्क से एक छोटे से नमूने में बैक्टीरिया की संख्या को गिनने के लिए एक माइक्रोस्कोप का इस्तेमाल किया। उन्होंने दालचीनी वाले तरल में बैक्टीरिया की मात्रा की तुलना दालचीनी के बिना तरल में बैक्टीरिया की मात्रा से की।
चित्र: बैक्टीरिया उगाने के लिए तरल के फ्लास्क।
उस प्रश्न की पहचान करें जिसका लियोन का प्रयोग सबसे अच्छा उत्तर दे सकता है।
|
[
"क्या दालचीनी के बिना तरल की तुलना में दालचीनी वाले तरल में अधिक बैक्टीरिया बढ़ते हैं?",
"क्या तापमान इस बात को प्रभावित करता है कि तरल में कितने बैक्टीरिया बढ़ सकते हैं?"
] | 0 |
closed choice
|
grade6
|
natural science
|
science-and-engineering-practices
|
Designing experiments
|
Identify the experimental question
|
Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was grown in sandy soil, and the other was grown in clay soil. Then, the height of each plant was measured.
First, identify the part of the experiment that was tested. The part of an experiment that is tested usually involves the part of the experimental setup that is different or changed. In the experiment described above, each group of plants was grown in a different type of soil. So, the effect of growing plants in different soil types was tested.
Then, identify the part of the experiment that was measured. The part of the experiment that is measured may include measurements and calculations. In the experiment described above, the heights of the plants in each group were measured.
Experiments can answer questions about how the part of the experiment that is tested affects the part that is measured. So, the experiment described above can answer questions about how soil type affects plant height.
Examples of questions that this experiment can answer include:
Does soil type affect the height of daffodil plants?
Do daffodil plants in sandy soil grow taller than daffodil plants in clay soil?
Are daffodil plants grown in sandy soil shorter than daffodil plants grown in clay soil?
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संदर्भ: ग्रेट इग्रेट वेटलैंड्स और झीलों के पास रहते हैं। वे ज़्यादातर मछलियाँ खाते हैं।
गर्दन इसे मछली पकड़ने में मदद करती है जबकि इसका बाकी शरीर स्थिर रहता है। अगर इग्रेट को अपना शरीर हिलाना पड़े, तो यह मछलियों को डराकर भगा सकता है।
चित्र: ग्रेट इग्रेट।
किस जानवर की गर्दन भी शिकार करने के लिए अनुकूलित है जबकि उसका बाकी शरीर स्थिर रहता है?
|
[
"फ़्रिगेटबर्ड",
"ग्रेट ब्लू हेरॉन"
] | 1 |
closed choice
|
grade5
|
natural science
|
biology
|
Adaptations
|
Animal adaptations: beaks, mouths, and necks
|
An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's neck is one example of an adaptation. Animals' necks can be adapted in different ways. For example, a large frilled neck might help an animal appear dangerous to its predators. A long neck might help an animal get food from tall trees.
|
Look at the picture of the great egret.
The great egret has a long neck. Its neck is adapted for hunting prey while keeping the rest of its body still. This allows the great egret to grab the prey without scaring it away.
Now look at each animal. Figure out which animal has a similar adaptation.
The great blue heron has a long neck. Its neck is adapted for hunting prey while keeping the rest of its body still.
The frigatebird has a short neck. Its neck is not adapted for hunting prey while keeping the rest of its body still.
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संदर्भ: नीचे दिए गए प्रश्न का उत्तर देने के लिए ग्राफ का उपयोग करें।
कौन सा कथन अटलांटा में औसत मासिक वर्षा का सबसे अच्छा वर्णन करता है?
|
[
"फरवरी मार्च की तुलना में अधिक गीला है।",
"अटलांटा में एक बरसात का मौसम और एक सूखा मौसम होता है।",
"अटलांटा में महीने दर महीने वर्षा में बहुत अधिक बदलाव नहीं होता है।"
] | 2 |
closed choice
|
grade4
|
natural science
|
earth-science
|
Weather and climate
|
Use climate data to make predictions
|
Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average.
|
To describe the average precipitation trends in Atlanta, look at the graph.
Choice "Feb" is incorrect.
Choice "Mar" is incorrect.
Choice "Atlanta has a rainy season and a dry season." is incorrect.
The average monthly precipitation does not change much throughout the year. Every month has rain, and there is no dry season.
Choice "February is wetter than March." is incorrect.
Wetter months have a higher average precipitation than drier months. February has a slightly lower average monthly precipitation than March. So, February is not wetter than March.
Choice "Precipitation does not change much from month to month in Atlanta." is incorrect.
The average monthly precipitation changes only slightly throughout the year.
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संदर्भ: नीचे दिया गया गद्यांश एक प्रयोग का वर्णन करता है। गद्यांश को पढ़ें और फिर नीचे दिए गए निर्देशों का पालन करें।
ऑस्टेन ने 40 को आठ कागज़ के थैलों में बराबर-बराबर बांट दिया और थैलों को सील कर दिया। उसने चार थैलों में 20 छोटे छेद किए और अन्य चार को बिना छेद वाले छोड़ दिया। उसने थैलों को तीन दिनों के लिए कमरे के तापमान पर रखा। फिर, ऑस्टेन ने थैलों को खोला और प्रत्येक केले पर भूरे धब्बों की संख्या गिनी। उसने छेद वाले थैलों में केले पर भूरे धब्बों की औसत संख्या की तुलना बिना छेद वाले थैलों में केले पर भूरे धब्बों की औसत संख्या से की।
चित्र: कच्चे केले।
उस प्रश्न की पहचान कीजिए जिसका ऑस्टेन का प्रयोग सबसे अच्छा उत्तर दे सकता है।
|
[
"क्या बिना छेद वाले थैलों की तुलना में छेद वाले थैलों में रखने पर केले पर अधिक भूरे धब्बे पड़ते हैं?",
"क्या ठंडे रेफ्रिजरेटर की तुलना में कमरे के तापमान पर रखे जाने पर केले पर अधिक भूरे धब्बे पड़ते हैं?"
] | 0 |
closed choice
|
grade6
|
natural science
|
science-and-engineering-practices
|
Designing experiments
|
Identify the experimental question
|
Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was grown in sandy soil, and the other was grown in clay soil. Then, the height of each plant was measured.
First, identify the part of the experiment that was tested. The part of an experiment that is tested usually involves the part of the experimental setup that is different or changed. In the experiment described above, each group of plants was grown in a different type of soil. So, the effect of growing plants in different soil types was tested.
Then, identify the part of the experiment that was measured. The part of the experiment that is measured may include measurements and calculations. In the experiment described above, the heights of the plants in each group were measured.
Experiments can answer questions about how the part of the experiment that is tested affects the part that is measured. So, the experiment described above can answer questions about how soil type affects plant height.
Examples of questions that this experiment can answer include:
Does soil type affect the height of daffodil plants?
Do daffodil plants in sandy soil grow taller than daffodil plants in clay soil?
Are daffodil plants grown in sandy soil shorter than daffodil plants grown in clay soil?
| ||
कॉलम 4 में कौन सा i है?
|
[
"थिएटर",
"अग्निशमन विभाग",
"तालाब",
"शॉपिंग मॉल"
] | 3 |
closed choice
|
grade2
|
social science
|
geography
|
Geography
|
Use a letter-number grid
|
A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers.
|
The shopping mall is in column 4.
|
|
किस देश को हाइलाइट किया गया है?
|
[
"किरिबाती",
"माइक्रोनेशिया के संघीय राज्य",
"समोआ",
"पलाऊ"
] | 3 |
closed choice
|
grade6
|
social science
|
geography
|
Oceania: geography
|
Identify and select countries of Oceania
|
This country is Palau.
|
||
ओहियो की राजधानी क्या है?
|
[
"चार्ल्सटन",
"कोलंबस",
"लिंकन",
"फार्गो"
] | 1 |
closed choice
|
grade4
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Midwest
|
Columbus is the capital of Ohio.
|
||
संदर्भ: उभयचरों की त्वचा नम होती है और वे अपना जीवन पानी में शुरू करते हैं। अमेरिकी बुलफ्रॉग उभयचरों का एक उदाहरण है।
नीचे दिए गए उभयचरों का चयन करें।
|
[
"सफेद सारस",
"लाल आंखों वाला पेड़ मेंढक"
] | 1 |
closed choice
|
grade2
|
natural science
|
biology
|
Classification
|
Identify mammals, birds, fish, reptiles, and amphibians
|
Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification.
|
A red-eyed tree frog is an amphibian. It has moist skin and begins its life in water.
A white stork is a bird. It has feathers, two wings, and a beak.
|
|
संदर्भ: लोग समस्याओं का समाधान विकसित करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कर सकते हैं। प्रक्रिया का एक चरण यह परीक्षण करना है कि क्या संभावित समाधान डिज़ाइन की आवश्यकताओं को पूरा करता है।
नीचे दिया गया गद्यांश वर्णन करता है कि किसी समस्या के समाधान का परीक्षण करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कैसे किया गया। गद्यांश पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
जेलेन था। प्लांट में, पानी से रोग पैदा करने वाले बैक्टीरिया को हटाने के लिए एक महंगा फिल्टर इस्तेमाल किया जाता था। लेकिन समय के साथ, फिल्टर बैक्टीरिया से भर जाता। यदि फिल्टर भर जाता, तो पानी जल्दी से आगे नहीं बढ़ पाता। जेलेन को यह तय करना था कि कब फिल्टर बहुत अधिक भर जाता है और उसे बदलने की आवश्यकता होती है। इसलिए, अपने निरीक्षण के दौरान, जेलेन ने पानी के कितनी जल्दी से इससे गुजरने की माप करके फिल्टर की जाँच की।
चित्र: जल उपचार संयंत्र में एक इंजीनियर।
जेलेन का परीक्षण निम्नलिखित में से क्या दिखा सकता है?
|
[
"क्या फिल्टर भर गया था",
"क्या एक सस्ता फिल्टर अधिक बार भर जाता",
"फ़िल्टर किए जाने से पहले पानी में बैक्टीरिया की मात्रा"
] | 0 |
closed choice
|
grade7
|
natural science
|
science-and-engineering-practices
|
Engineering practices
|
Evaluate tests of engineering-design solutions
|
People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a bridge for a windy location. She wants to make sure the bridge will not move too much in high wind. So, she builds a smaller prototype, or model, of a bridge. Then, she exposes the prototype to high winds and measures how much the bridge moves.
First, identify what was tested. A test can examine one design, or it may compare multiple prototypes to each other. In the test described above, the engineer tested a prototype of a bridge in high wind.
Then, identify what the test measured. One of the criteria for the bridge was that it not move too much in high winds. The test measured how much the prototype bridge moved.
Tests can show how well one or more designs meet the criteria. The test described above can show whether the bridge would move too much in high winds.
| ||
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन तीन वस्तुओं में कौन सा गुण समान है?
|
[
"पारदर्शी",
"मुलायम",
"ऊबड़-खाबड़"
] | 2 |
closed choice
|
grade4
|
natural science
|
physics
|
Materials
|
Compare properties of objects
|
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects by their properties is called classification.
|
Look at each object.
For each object, decide if it has that property.
You can see clearly through a transparent object. None of the objects are transparent.
A soft object changes shape when pressed or squeezed. None of the objects are soft.
A bumpy object is covered in lumps and bumps. All three objects are bumpy.
The property that all three objects have in common is bumpy.
|
|
संदर्भ: नीचे दी गई छवियाँ चुम्बकों के दो जोड़े दिखाती हैं। अलग-अलग जोड़ों में चुम्बक एक दूसरे को प्रभावित नहीं करते हैं। दिखाए गए सभी चुम्बक एक ही पदार्थ से बने हैं।
प्रत्येक जोड़े में चुम्बकों के बीच चुंबकीय बल के बारे में सोचें। निम्नलिखित में से कौन सा कथन सत्य है?
|
[
"जोड़ी 2 में चुंबकीय बल अधिक मजबूत है।",
"जोड़ी 1 में चुंबकीय बल अधिक मजबूत है।",
"दोनों जोड़ों में चुंबकीय बल की ताकत समान है।"
] | 2 |
closed choice
|
grade4
|
natural science
|
physics
|
Magnets
|
Compare strengths of magnetic forces
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
|
Distance affects the strength of the magnetic force. But the distance between the magnets in Pair 1 and in Pair 2 is the same.
So, the strength of the magnetic force is the same in both pairs.
|
|
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन चार वस्तुओं में कौन सा गुण समान है?
|
[
"नाजुक",
"पारदर्शी",
"मीठा"
] | 0 |
closed choice
|
grade5
|
natural science
|
physics
|
Materials
|
Compare properties of objects
|
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects by their properties is called classification.
|
Look at each object.
For each object, decide if it has that property.
A fragile object will break into pieces if you drop it. All four objects are fragile.
You can see clearly through a transparent object. The fish bowl and the glass flask are transparent, but the ceramic tea cup is not.
Sugar has a sweet taste. The ceramic tea cup and the icicle are not sweet.
The property that all four objects have in common is fragile.
|
|
संदर्भ: जंपिंग स्पाइडर के बारे में गद्यांश का पहला भाग पढ़ें।
जंपिंग स्पाइडर तेज़ होते हैं। वे दूर तक कूद भी सकते हैं।
ज़्यादातर मकड़ियाँ कीड़ों को पकड़ने के लिए जाल बनाती हैं। फिर, वे कीड़ों को खा जाती हैं। लेकिन जंपिंग स्पाइडर अपना भोजन दूसरे तरीके से पकड़ते हैं। वे मक्खियों और दूसरे कीड़ों पर कूदते हैं।
जंपिंग स्पाइडर अपना भोजन कैसे पकड़ते हैं?
|
[
"वे जाल में कीड़ों को पकड़ते हैं।",
"वे कीड़ों पर कूदते हैं।",
"वे कीड़ों को पकड़ने के लिए तेज़ी से दौड़ते हैं।"
] | 1 |
closed choice
|
grade1
|
language science
|
reading-comprehension
|
Read-alone texts
|
Read passages about animals
|
The passage says that jumping spiders catch their food in a different way. They jump onto flies and other bugs.
|
||
संदर्भः लोग समस्याओं का समाधान विकसित करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कर सकते हैं। इस प्रक्रिया का एक चरण यह परीक्षण करना है कि क्या संभावित समाधान डिज़ाइन की आवश्यकताओं को पूरा करता है।
नीचे दिया गया अवतरण वर्णन करता है कि किसी समस्या के समाधान का परीक्षण करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कैसे किया गया। अवतरण को पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
मैनी एक एयरोस्पेस इंजीनियर था जो मंगल ग्रह पर उतरने वाले अंतरिक्ष यान के लिए एक पैराशूट विकसित कर रहा था। उसे पैराशूट के केंद्र में एक वेंट जोड़ने की जरूरत थी ताकि अंतरिक्ष यान आसानी से उतर सके। हालांकि, अंतरिक्ष यान को उतरने से पहले तेज गति से यात्रा करनी होगी। यदि वेंट बहुत बड़ा या बहुत छोटा था, तो पैराशूट इस गति से बेतहाशा झूल सकता था। यह हरकत अंतरिक्ष यान को नुकसान पहुंचा सकती थी।
इसलिए, यह तय करने में मदद के लिए कि वेंट कितना बड़ा होना चाहिए
चित्र: एक पवन सुरंग में एक अंतरिक्ष यान का पैराशूट।
मैनी के परीक्षण से निम्नलिखित में से क्या पता चला?
|
[
"यदि 200 किमी प्रति घंटे की गति से जाने वाले 1 मीटर वेंट वाले पैराशूट का उपयोग करते समय अंतरिक्ष यान क्षतिग्रस्त हो गया था",
"200 किमी प्रति घंटे की गति पर 1 मीटर वेंट वाला पैराशूट कितना स्थिर था",
"क्या 400 किमी प्रति घंटे की गति पर 1 मीटर वेंट वाला पैराशूट बहुत अधिक स्विंग करेगा"
] | 1 |
closed choice
|
grade8
|
natural science
|
science-and-engineering-practices
|
Engineering practices
|
Evaluate tests of engineering-design solutions
|
People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a bridge for a windy location. She wants to make sure the bridge will not move too much in high wind. So, she builds a smaller prototype, or model, of a bridge. Then, she exposes the prototype to high winds and measures how much the bridge moves.
First, identify what was tested. A test can examine one design, or it may compare multiple prototypes to each other. In the test described above, the engineer tested a prototype of a bridge in high wind.
Then, identify what the test measured. One of the criteria for the bridge was that it not move too much in high winds. The test measured how much the prototype bridge moved.
Tests can show how well one or more designs meet the criteria. The test described above can show whether the bridge would move too much in high winds.
| ||
इनमें से कौन सा राज्य सबसे पश्चिम में है?
|
[
"इलिनोइस",
"ओहियो",
"अर्कांसस",
"साउथ कैरोलिना"
] | 2 |
closed choice
|
grade5
|
social science
|
geography
|
Maps
|
Read a map: cardinal directions
|
Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north is at the top of the map.
|
To find the answer, look at the compass rose. Look at which way the west arrow is pointing. Arkansas is farthest west.
|
|
संदर्भ: चित्र: बफ़ेलो गैप राष्ट्रीय घास का मैदान।
बफ़ेलो गैप राष्ट्रीय घास का मैदान दक्षिण-पश्चिमी साउथ डकोटा में एक प्रेयरी घास का मैदान पारिस्थितिकी तंत्र है। यह लुप्तप्राय काले पैरों वाले फेरेट का घर है। यह फेरेट की एकमात्र प्रजाति है जो उत्तरी अमेरिका में पाई जाती है।
कौन सा कथन बफ़ेलो गैप राष्ट्रीय घास के मैदान के पारिस्थितिकी तंत्र का वर्णन करता है?
|
[
"यहाँ भारी बारिश होती है।",
"यहाँ मध्यम मात्रा में बारिश होती है।",
"यहाँ सर्दियाँ ठंडी और गर्मियाँ ठंडी होती हैं।"
] | 1 |
closed choice
|
grade8
|
natural science
|
biology
|
Ecosystems
|
Describe ecosystems
|
An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestrial ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil
the organisms that live there
|
A prairie grassland is a type of ecosystem. Prairie grasslands have the following features: hot summers and cool winters, a medium amount of rain, and soil that is rich in nutrients. So, the following statement describes the Buffalo Gap National Grassland ecosystem: hot summers and cool winters, a medium amount of rain, and soil that is rich in nutrients. It has a medium amount of rain. The following statements do not describe Buffalo Gap National Grassland: hot summers and cool winters, a medium amount of rain, and soil that is rich in nutrients. It has cold winters and cool summers. It has heavy rain.
|
|
नीचे अणुओं के मॉडल देखें। मूल पदार्थ का चयन करें।
|
[
"एसीटैल्डिहाइड",
"क्लोरोफॉर्म",
"ऑक्सीजन"
] | 2 |
closed choice
|
grade6
|
natural science
|
chemistry
|
Atoms and molecules
|
Identify elementary substances and compounds using models
|
There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are composed of multiple chemical elements bonded together are compounds.
Every chemical element is represented by its own atomic symbol. An atomic symbol may consist of one capital letter, or it may consist of a capital letter followed by a lowercase letter. For example, the atomic symbol for the chemical element boron is B, and the atomic symbol for the chemical element chlorine is Cl.
Scientists use different types of models to represent substances whose atoms are bonded in different ways. One type of model is a ball-and-stick model. The ball-and-stick model below represents a molecule of the compound boron trichloride.
In a ball-and-stick model, the balls represent atoms, and the sticks represent bonds. Notice that the balls in the model above are not all the same color. Each color represents a different chemical element. The legend shows the color and the atomic symbol for each chemical element in the substance.
| ||
संदर्भ: नीचे दिया गया मॉडल कार्बन टेट्राक्लोराइड के अणु को दर्शाता है। कार्बन टेट्राक्लोराइड का इस्तेमाल कभी अग्निशामक यंत्रों में किया जाता था। अब इसका इस्तेमाल नहीं किया जाता क्योंकि यह जहरीला है।
कथन को पूरा करें।
कार्बन टेट्राक्लोराइड () है।
|
[
"एक प्राथमिक पदार्थ",
"एक यौगिक"
] | 1 |
closed choice
|
grade7
|
natural science
|
chemistry
|
Atoms and molecules
|
Classify elementary substances and compounds using models
|
There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are composed of multiple chemical elements bonded together are compounds.
Every chemical element is represented by its own atomic symbol. An atomic symbol may consist of one capital letter, or it may consist of a capital letter followed by a lowercase letter. For example, the atomic symbol for the chemical element boron is B, and the atomic symbol for the chemical element chlorine is Cl.
Scientists use different types of models to represent substances whose atoms are bonded in different ways. One type of model is a ball-and-stick model. The ball-and-stick model below represents a molecule of the compound boron trichloride.
In a ball-and-stick model, the balls represent atoms, and the sticks represent bonds. Notice that the balls in the model above are not all the same color. Each color represents a different chemical element. The legend shows the color and the atomic symbol for each chemical element in the substance.
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Use the model to determine whether carbon tetrachloride is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the chemical elements represented in the model.
You can see from the model that a molecule of carbon tetrachloride is composed of one carbon atom and four chlorine atoms bonded together.
Step 2: Determine whether the substance is an elementary substance or a compound.
You know from Step 1 that carbon tetrachloride is composed of two chemical elements: carbon and chlorine. Since carbon tetrachloride is composed of multiple chemical elements bonded together, carbon tetrachloride is a compound.
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संदर्भ: सबसे अच्छा उत्तर चुनें।
इन तीन वस्तुओं में कौन सी विशेषता समान है?
|
[
"नाजुक",
"उछालभरी",
"कठोर"
] | 2 |
closed choice
|
grade4
|
natural science
|
physics
|
Materials
|
Compare properties of objects
|
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects by their properties is called classification.
|
Look at each object.
For each object, decide if it has that property.
A hard object does not change shape when pressed or squeezed. All three objects are hard.
A fragile object will break into pieces if you drop it. The diamond is not fragile.
A bouncy object will bounce back from the floor if you drop it. The fossil is not bouncy.
The property that all three objects have in common is hard.
|
|
कौन सा महाद्वीप हाइलाइट किया गया है?
|
[
"यूरोप",
"अफ्रीका",
"एशिया",
"दक्षिण अमेरिका"
] | 1 |
closed choice
|
grade8
|
social science
|
geography
|
Physical Geography
|
Oceans and continents
|
A continent is one of the major land masses on the earth. Most people say there are seven continents.
|
This continent is Africa.
|
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संदर्भ: क्वार्ट्ज में निम्नलिखित गुण हैं:
ठोस
जीवित चीजों द्वारा नहीं बनाया गया
प्राकृतिक रूप से पाया जाने वाला
सफ़ेद धारियाँ
स्थिर क्रिस्टल संरचना
सिलिका नामक शुद्ध पदार्थ से बना
क्या क्वार्ट्ज एक खनिज या चट्टान है?
|
[
"खनिज",
"चट्टान"
] | 0 |
closed choice
|
grade8
|
natural science
|
earth-science
|
Rocks and minerals
|
Identify rocks and minerals
|
Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed crystal structure. | Yes | No
You can use these properties to tell whether a substance is a mineral, a rock, or neither.
Look closely at the last three properties:
Minerals and rocks are not made by organisms.
Organisms make their own body parts. For example, snails and clams make their shells. Because they are made by organisms, body parts cannot be minerals or rocks.
Humans are organisms too. So, substances that humans make by hand or in factories are not minerals or rocks.
A mineral is a pure substance, but a rock is not.
A pure substance is made of only one type of matter. Minerals are pure substances, but rocks are not. Instead, all rocks are mixtures.
A mineral has a fixed crystal structure, but a rock does not.
The crystal structure of a substance tells you how the atoms or molecules in the substance are arranged. Different types of minerals have different crystal structures, but all minerals have a fixed crystal structure. This means that the atoms and molecules in different pieces of the same type of mineral are always arranged the same way.
However, rocks do not have a fixed crystal structure. So, the arrangement of atoms or molecules in different pieces of the same type of rock may be different!
|
Quartz has all the properties of a mineral. So, quartz is a mineral.
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संदर्भ: दो चुम्बक दिखाए अनुसार रखे गए हैं।
संकेत: जो चुम्बक आकर्षित करते हैं वे एक दूसरे को खींचते हैं। जो चुम्बक प्रतिकर्षित करते हैं वे एक दूसरे को दूर धकेलते हैं।
क्या ये चुम्बक एक दूसरे को आकर्षित करेंगे या प्रतिकर्षित करेंगे?
|
[
"आकर्षित",
"प्रतिकर्षित"
] | 1 |
closed choice
|
grade3
|
natural science
|
physics
|
Magnets
|
Identify magnets that attract or repel
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets. The north pole of each magnet is marked N, and the south pole is marked S.
If different poles are closest to each other, the magnets attract. The magnets in the pair below attract.
If the same poles are closest to each other, the magnets repel. The magnets in both pairs below repel.
|
Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other.
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इनमें से कौन से महाद्वीप को प्रधान मध्याह्न रेखा प्रतिच्छेद करती है?
|
[
"अंटार्कटिका",
"उत्तरी अमेरिका",
"दक्षिण अमेरिका"
] | 0 |
closed choice
|
grade4
|
social science
|
geography
|
Maps
|
Use lines of latitude and longitude
|
Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latitude. We start counting degrees from there.
Lines north of the equator are labeled N for north. Lines south of the equator are labeled S for south. Lines of latitude are also called parallels because each line is parallel to the equator.
Lines of longitude are also called meridians. They show how far east or west a place is. We use degrees to help describe how far a place is from the prime meridian. The prime meridian is the line located at 0° longitude. Lines west of the prime meridian are labeled W. Lines east of the prime meridian are labeled E. Meridians meet at the north and south poles.
The equator goes all the way around the earth, but the prime meridian is different. It only goes from the North Pole to the South Pole on one side of the earth. On the opposite side of the globe is another special meridian. It is labeled both 180°E and 180°W.
Together, lines of latitude and lines of longitude form a grid. You can use this grid to find the exact location of a place.
|
The prime meridian is the line at 0° longitude. It intersects Antarctica. It does not intersect South America or North America.
|
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संदर्भ: नीचे दी गई छवियाँ चुम्बकों के दो जोड़े दिखाती हैं। अलग-अलग जोड़ों में चुम्बक एक दूसरे को प्रभावित नहीं करते हैं। दिखाए गए सभी चुम्बक एक ही पदार्थ से बने हैं।
प्रत्येक जोड़े में चुम्बकों के बीच चुंबकीय बल के बारे में सोचें। निम्नलिखित में से कौन सा कथन सत्य है?
|
[
"जोड़ी 1 में चुंबकीय बल कमज़ोर है।",
"दोनों जोड़ों में चुंबकीय बल की ताकत समान है।",
"जोड़ी 2 में चुंबकीय बल कमज़ोर है।"
] | 2 |
closed choice
|
grade3
|
natural science
|
physics
|
Magnets
|
Compare strengths of magnetic forces
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You can change the strength of a magnetic force between two magnets by changing the distance between them. The magnetic force is weaker when the magnets are farther apart.
|
Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 2 are farther apart than the magnets in Pair 1. So, the magnetic force is weaker in Pair 2 than in Pair 1.
|
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दिखाई गई कॉलोनी का नाम क्या है?
|
[
"वर्जीनिया",
"फ्लोरिडा",
"साउथ कैरोलिना",
"मैरीलैंड"
] | 0 |
closed choice
|
grade5
|
social science
|
us-history
|
English colonies in North America
|
Identify the Thirteen Colonies
|
The colony is Virginia.
The Virginia Colony included land that would later become part of the state of West Virginia. West Virginia was never its own colony.
|
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संदर्भ: लोग समस्याओं के समाधान विकसित करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कर सकते हैं। प्रक्रिया में एक चरण यह जांचना है कि क्या संभावित समाधान डिज़ाइन की आवश्यकताओं को पूरा करता है।
नीचे दिया गया गद्यांश बताता है कि किसी समस्या के समाधान का परीक्षण करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कैसे किया गया। गद्यांश पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
पवन टर्बाइन बिजली पैदा करने के लिए पवन ऊर्जा का उपयोग करते हैं। अकीरा एक सामग्री इंजीनियर थी जिसने पवन टर्बाइन डिजाइन किए थे। वह एक नया टर्बाइन डिजाइन करना चाहती थी जो पुराने पवन टर्बाइनों की तुलना में 10% अधिक बिजली पैदा करे। उसने सोचा कि हल्के पदार्थ से बना टर्बाइन अधिक आसानी से घूमेगा और अधिक बिजली पैदा करेगा। इसलिए, अकीरा ने हल्के पदार्थ से बने टर्बाइन का एक कंप्यूटर मॉडल बनाया। फिर उसने मॉडल का उपयोग यह गणना करने के लिए किया कि पुराने टर्बाइनों की तुलना में नया टर्बाइन कितनी अधिक बिजली पैदा कर सकता है।
चित्र: एक पवन टर्बाइन कंप्यूटर मॉडल का अध्ययन।
अकीरा का परीक्षण निम्नलिखित में से क्या दिखा सकता है?
|
[
"नए टर्बाइन का वजन कितना होगा",
"क्या नया टर्बाइन 10% अधिक बिजली पैदा कर सकता है",
"क्या नया टर्बाइन आसानी से घूम सकता है"
] | 1 |
closed choice
|
grade8
|
natural science
|
science-and-engineering-practices
|
Engineering practices
|
Evaluate tests of engineering-design solutions
|
People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a bridge for a windy location. She wants to make sure the bridge will not move too much in high wind. So, she builds a smaller prototype, or model, of a bridge. Then, she exposes the prototype to high winds and measures how much the bridge moves.
First, identify what was tested. A test can examine one design, or it may compare multiple prototypes to each other. In the test described above, the engineer tested a prototype of a bridge in high wind.
Then, identify what the test measured. One of the criteria for the bridge was that it not move too much in high winds. The test measured how much the prototype bridge moved.
Tests can show how well one or more designs meet the criteria. The test described above can show whether the bridge would move too much in high winds.
| ||
संदर्भ: गाय शाकाहारी या पौधे खाने वाली होती हैं। वे घास और पत्ते खाती हैं। गाय का मुंह पौधों के पदार्थों को पीसकर खाने के लिए अनुकूलित है।
चित्र: गाय।
किस जानवर का मुंह भी पौधों के पदार्थ खाने के लिए अनुकूलित है?
|
[
"ज़ेबरा",
"रेशमी चींटीखोर"
] | 0 |
closed choice
|
grade5
|
natural science
|
biology
|
Adaptations
|
Animal adaptations: beaks, mouths, and necks
|
An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear through meat. A long, thin mouth might help an animal catch insects that live in holes. Animals that eat similar food often have similar mouths.
|
Look at the picture of the cow.
The cow has long jaws and flat teeth. Its mouth is adapted to eat plant matter. The long jaws can help the cow reach leaves and grass. The flat teeth can help it cut and grind up the food into soft pieces it can swallow.
Now look at each animal. Figure out which animal has a similar adaptation.
The zebra has long jaws and flat teeth. Its mouth is adapted to eat plant matter.
The silky anteater has a long tube-shaped mouth and no teeth. Its mouth is not adapted to eat plant matter. The silky anteater uses its mouth to get insects out of holes and burrows.
|
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संदर्भ: दो चुम्बक दिखाए अनुसार रखे गए हैं।
क्या ये चुम्बक एक दूसरे को आकर्षित करेंगे या प्रतिकर्षित करेंगे?
|
[
"प्रतिकर्षित करेंगे",
"आकर्षित करेंगे"
] | 0 |
closed choice
|
grade4
|
natural science
|
physics
|
Magnets
|
Identify magnets that attract or repel
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The north pole of each magnet is labeled N, and the south pole is labeled S.
If opposite poles are closest to each other, the magnets attract. The magnets in the pair below attract.
If the same, or like, poles are closest to each other, the magnets repel. The magnets in both pairs below repel.
|
To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other.
|
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संदर्भ: प्रयोगशाला में वैज्ञानिक इंसुलिन के साथ काम कर रहे थे, जो एक प्रोटीन है जिसका उपयोग अक्सर मधुमेह के इलाज के लिए किया जाता है। उन्होंने इंसुलिन की दो समान शीशियों को अलग-अलग जगहों पर छोड़ दिया। यह तालिका दिखाती है कि 15 मिनट में प्रत्येक शीशी का तापमान कैसे बदला।
इस दौरान, थर्मल ऊर्जा () से () में स्थानांतरित हो गई।
|
[
"प्रत्येक शीशी . . . परिवेश",
"परिवेश . . . प्रत्येक शीशी"
] | 1 |
closed choice
|
grade8
|
natural science
|
physics
|
Thermal energy
|
Compare thermal energy transfers
|
A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, thermal energy was transferred out of the object to its surroundings.
|
The temperature of each vial increased, which means that the thermal energy of each vial increased. So, thermal energy was transferred from the surroundings to each vial.
|
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संदर्भ: यह जीव एक समुद्री फाइल स्नेक है। इसे एक्रोकॉर्डस ग्रैनुलैटस भी कहा जाता है।
इस जीव का सामान्य नाम क्या है?
|
[
"समुद्री फाइल स्नेक",
"एक्रोकॉर्डस ग्रैनुलैटस"
] | 0 |
closed choice
|
grade7
|
natural science
|
biology
|
Classification and scientific names
|
Identify common and scientific names
|
An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics, but common names are usually not. The first word of the scientific name is capitalized, and the second word is not. For example, the common name of the animal below is giant panda. Its scientific name is Ailuropoda melanoleuca.
|
Acrochordus granulatus is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Acrochordus granulatus is the organism's scientific name. So, you know that marine file snake is the common name.
|
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संदर्भ: दो चुम्बक दिखाए अनुसार रखे गए हैं।
क्या ये चुम्बक एक दूसरे को आकर्षित करेंगे या प्रतिकर्षित करेंगे?
|
[
"प्रतिकर्षित करेंगे",
"आकर्षित करेंगे"
] | 0 |
closed choice
|
grade4
|
natural science
|
physics
|
Magnets
|
Identify magnets that attract or repel
|
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The north pole of each magnet is labeled N, and the south pole is labeled S.
If opposite poles are closest to each other, the magnets attract. The magnets in the pair below attract.
If the same, or like, poles are closest to each other, the magnets repel. The magnets in both pairs below repel.
|
To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other.
|
|
संदर्भ: दो चुम्बक दिखाए अनुसार रखे गए हैं।
क्या ये चुम्बक एक दूसरे को आकर्षित करेंगे या प्रतिकर्षित करेंगे?
|
[
"आकर्षित",
"प्रतिकर्षित"
] | 1 |
closed choice
|
grade5
|
natural science
|
physics
|
Magnets
|
Identify magnets that attract or repel
|
Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (S).
Here are some examples of magnets. Their poles are shown in different colors and labeled.
Whether a magnet attracts or repels other magnets depends on the positions of its poles.
If opposite poles are closest to each other, the magnets attract. The magnets in the pair below attract.
If the same, or like, poles are closest to each other, the magnets repel. The magnets in both pairs below repel.
|
To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other.
|
|
संदर्भ: गद्यांश को पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
अंटार्कटिक क्रिल झींगा के समान तैरने वाले क्रस्टेशियन की एक प्रजाति है, जो लगभग 5 सेंटीमीटर लंबा होता है। क्रिल अंटार्कटिका के आसपास दक्षिणी महासागर में समुद्री बर्फ के नीचे उगने वाले शैवाल खाते हैं।
हर गर्मियों में हंपबैक व्हेल के झुंड दक्षिणी महासागर में तैरते हैं। हंपबैक व्हेल और अन्य जानवर, जैसे सम्राट पेंगुइन और तेंदुआ सील, अंटार्कटिक क्रिल खाते हैं। वास्तव में, अंटार्कटिक क्रिल अंटार्कटिका के लगभग हर जानवर द्वारा खाए जाते हैं!
चित्र: दक्षिणी महासागर में हंपबैक व्हेल।
निम्नलिखित में से कौन सा दक्षिणी महासागर में एक समुदाय का सबसे अच्छा वर्णन करता है?
|
[
"शैवाल, समुद्री बर्फ और समुद्री जल",
"अंटार्कटिक क्रिल, सम्राट पेंगुइन और तेंदुआ सील",
"हंपबैक व्हेल का झुंड"
] | 1 |
closed choice
|
grade7
|
natural science
|
biology
|
Ecosystems
|
Describe populations, communities, and ecosystems
|
In an environment, organisms interact with each other and with their nonliving surroundings. To help describe these interactions, ecologists use specific terms for different types of groups.
A single organism is an individual. Individuals of the same species that live in the same place are part of a population.
Multiple populations of different species that live in the same place are part of a community.
Together, communities of living organisms and the nonliving parts of their environment make up an ecosystem.
| ||
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन चार वस्तुओं में कौन सा गुण समान है?
|
[
"पारदर्शी",
"चिकना",
"लचीला"
] | 1 |
closed choice
|
grade5
|
natural science
|
physics
|
Materials
|
Compare properties of objects
|
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects by their properties is called classification.
|
Look at each object.
For each object, decide if it has that property.
A flexible object can be folded or bent without breaking easily. The pool toy is flexible, but the ice hockey rink is not.
A smooth object is not scratchy or rough. All four objects are smooth.
You can see clearly through a transparent object. The bucket and the slide are not transparent.
The property that all four objects have in common is smooth.
|
|
संदर्भ: यह चित्र मेयोलानिया नामक एक प्राचीन जानवर के जीवाश्म को दर्शाता है। एक वयस्क मेयोलानिया लगभग आठ फीट लंबा था।
मेयोलानिया में कौन सी विशेषता थी? जीवाश्म पर आप जो विशेषता देख सकते हैं उसे चुनें।
|
[
"लंबे, पतले एंटीना",
"पैर की उंगलियाँ"
] | 1 |
closed choice
|
grade6
|
natural science
|
earth-science
|
Fossils
|
Compare fossils to modern organisms
|
The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activities, such as a burrow or a footprint, can tell you about the organism's behavior.
Here are three examples of fossils and the traits that you can observe from them:
This is a fossil of an animal. This fossil tells you that the animal had a spiral-shaped shell.
This is a fossil of a plant. This fossil tells you that the plant had small leaves arranged in a branched pattern.
This is a fossil of an animal's footprint. This fossil tells you that the animal could walk on land.
An organism's fossil may not show all of the organism's traits. This is because most body parts are destroyed during fossil formation. When an organism's body turns into a fossil, only a few body parts are usually preserved.
| ||
वाशिंगटन की राजधानी क्या है?
|
[
"स्पोकेन",
"ओलंपिया",
"स्प्रिंगफील्ड",
"सिएटल"
] | 1 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify state capitals of the West
|
Olympia is the capital of Washington.
|
||
संदर्भ: व्यापार तब होता है जब लोग वस्तुओं और सेवाओं का आदान-प्रदान करने के लिए सहमत होते हैं। लोग कुछ और पाने के लिए कुछ छोड़ देते हैं। कभी-कभी लोग वस्तु विनिमय करते हैं, या एक वस्तु या सेवा का दूसरे से सीधे आदान-प्रदान करते हैं।
बैरी और मोना स्कूल कैफेटेरिया में अपने लंच बॉक्स खोलते हैं। दोनों अपने लंच से खुश हो सकते थे। बैरी अपने लंच में ब्रोकली चाहता था और मोना टमाटर की उम्मीद कर रही थी। उनके लंच की तस्वीरों को देखें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
बैरी और मोना क्या व्यापार कर सकते हैं ताकि प्रत्येक को वह मिल जाए जो वे चाहते हैं?
|
[
"मोना अपने बादामों के बदले बैरी के टमाटर दे सकती है।",
"मोना अपनी ब्रोकली के बदले बैरी के संतरे दे सकती है।",
"बैरी अपने टमाटरों के बदले मोना की सैंडविच दे सकता",
"Barry can trade his tomatoes for Mona's broccoli."
] | 3 |
closed choice
|
grade6
|
social science
|
economics
|
Basic economic principles
|
Trade and specialization
|
Barry wanted broccoli in his lunch and Mona was hoping for tomatoes. Look at the labeled part of the images.
Barry has tomatoes. Mona has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want.
|
||
मेन की राजधानी क्या है?
|
[
"पोर्टलैंड",
"हार्टफोर्ड",
"ऑगस्टा",
"एथेंस"
] | 2 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Northeast
|
Augusta is the capital of Maine.
|
||
संदर्भ: लोग समस्याओं का समाधान विकसित करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कर सकते हैं। प्रक्रिया का एक चरण यह परीक्षण करना है कि क्या संभावित समाधान डिज़ाइन की आवश्यकताओं को पूरा करता है।
नीचे दिया गया गद्यांश बताता है कि किसी समस्या के समाधान का परीक्षण करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कैसे किया गया। गद्यांश पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
डेरनेल थे। प्लांट में, पानी से रोग पैदा करने वाले बैक्टीरिया को हटाने के लिए एक महंगा फ़िल्टर इस्तेमाल किया जाता था। लेकिन समय के साथ, फ़िल्टर बैक्टीरिया से भर जाता। यदि फ़िल्टर भर जाता, तो पानी जल्दी से नहीं बह पाता। डेरनेल को यह तय करना था कि कब फ़िल्टर बहुत भर जाता है और उसे बदलने की ज़रूरत होती है। इसलिए, अपने निरीक्षण के दौरान, डेरनेल ने पानी के कितनी तेज़ी से बहते हुए फ़िल्टर को मापा, यह जाँच की।
चित्र: जल उपचार संयंत्र में एक इंजीनियर।
डेरनेल का परीक्षण निम्नलिखित में से क्या दिखा सकता है?
|
[
"क्या एक सस्ता फ़िल्टर अधिक बार भर जाता",
"क्या फ़िल्टर भर गया था",
"फ़िल्टर किए जाने से पहले पानी में बैक्टीरिया की मात्रा"
] | 1 |
closed choice
|
grade8
|
natural science
|
science-and-engineering-practices
|
Engineering practices
|
Evaluate tests of engineering-design solutions
|
People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a bridge for a windy location. She wants to make sure the bridge will not move too much in high wind. So, she builds a smaller prototype, or model, of a bridge. Then, she exposes the prototype to high winds and measures how much the bridge moves.
First, identify what was tested. A test can examine one design, or it may compare multiple prototypes to each other. In the test described above, the engineer tested a prototype of a bridge in high wind.
Then, identify what the test measured. One of the criteria for the bridge was that it not move too much in high winds. The test measured how much the prototype bridge moved.
Tests can show how well one or more designs meet the criteria. The test described above can show whether the bridge would move too much in high winds.
| ||
कौन सा महाद्वीप हाइलाइट किया गया है?
|
[
"उत्तरी अमेरिका",
"ऑस्ट्रेलिया",
"अंटार्कटिका",
"दक्षिण अमेरिका"
] | 1 |
closed choice
|
grade5
|
social science
|
geography
|
Oceans and continents
|
Identify oceans and continents
|
A continent is one of the major land masses on the earth. Most people say there are seven continents.
|
This continent is Australia.
|
|
किस देश को हाइलाइट किया गया है?
|
[
"किरिबाती",
"नाउरू",
"माइक्रोनेशिया के संघीय राज्य",
"मार्शल द्वीप"
] | 3 |
closed choice
|
grade7
|
social science
|
geography
|
Oceania: geography
|
Identify and select countries of Oceania
|
This country is the Marshall Islands.
Does the Marshall Islands have any territorial disputes?
The Marshall Islands claims to own Wake Island, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States claimed Wake Island in 1899 and has controlled it since then. But the Marshall Islands considers the island part of its territory. It says that its people have traveled to the island to gather food and resources for many years. Today, the island is mainly used by the U.S. Air Force.
|
||
मोंटाना की राजधानी क्या है?
|
[
"हेलेना",
"कार्सन सिटी",
"नाम्पा",
"बोइस"
] | 0 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify the 50 state capitals
|
Helena is the capital of Montana.
|
||
संदर्भ: यह आरेख इंग्लैंड में मीठे पानी के पारिस्थितिकी तंत्र, रिवर फ्रोम से एक खाद्य श्रृंखला दिखाता है।
इस खाद्य श्रृंखला में, ब्राउन ट्राउट एक द्वितीयक उपभोक्ता है। क्यों?
|
[
"यह एक द्वितीयक उपभोक्ता को खाता है।",
"यह एक प्राथमिक उपभोक्ता को खाता है।",
"यह एक उत्पादक को खाता है।"
] | 1 |
closed choice
|
grade5
|
natural science
|
biology
|
Ecosystems
|
Identify roles in food chains
|
Every organism needs food to stay alive. Organisms get their food in different ways. A food chain shows how organisms in an ecosystem get their food.
The food chain begins with the producer. A producer can change matter that is not food into food. Many producers use carbon dioxide, water, and sunlight to make sugar. Carbon dioxide and water are not food, but sugar is food for the producer.
Consumers eat other organisms. There can be several kinds of consumers in a food chain:
A primary consumer eats producers. The word primary tells you that this is the first consumer in a food chain.
A secondary consumer eats primary consumers. The word secondary tells you that this is the second consumer in a food chain.
A tertiary consumer eats secondary consumers. The word tertiary tells you that this is the third consumer in a food chain.
A top consumer is the animal at the top of a food chain. Food chains can have different numbers of organisms. For example, when there are four organisms in the chain, the top consumer is the tertiary consumer. But if there are five organisms in the chain, the top consumer eats the tertiary consumer!
|
In this food chain, the brown trout is a secondary consumer because it eats a primary consumer. The primary consumer in this food chain is the midge larva.
|
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