image
imagewidth (px) 53
760
| question
stringlengths 18
2.1k
| choices
listlengths 2
5
| answer
int8 0
4
| task
stringclasses 3
values | grade
stringclasses 9
values | subject
stringclasses 3
values | topic
stringclasses 15
values | category
stringclasses 65
values | skill
stringclasses 115
values | lecture
stringclasses 106
values | solution
stringlengths 0
1.91k
|
|---|---|---|---|---|---|---|---|---|---|---|---|
संदर्भ: नीचे दिए गए आरेख समान बंद, कठोर कंटेनरों में गैस के दो शुद्ध नमूने दिखाते 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?
|
[
"दोनों में से कोई नहीं; नमूनों का तापमान समान है",
"नमूना B",
"नमूना A"
] | 1 |
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: 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",
"दोनों में से कोई नहीं; उनकी सांद्रता समान है",
"विलयन A"
] | 1 |
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 A and Solution B have the same number of green particles per milliliter. So, their concentrations are the same.
|
|
दिखाई गई कॉलोनी का नाम क्या है?
|
[
"पेंसिल्वेनिया",
"वर्मोंट",
"टेनेसी",
"मिशिगन"
] | 0 |
closed choice
|
grade5
|
social science
|
us-history
|
English colonies in North America
|
Identify the Thirteen Colonies
|
The colony is Pennsylvania.
|
||
हवाई की राजधानी क्या है?
|
[
"हिलो",
"कार्सन सिटी",
"होनोलुलु",
"जूनो"
] | 2 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify state capitals of the West
|
Honolulu is the capital of Hawaii.
|
||
संदर्भ: यह आरेख दक्षिणी कैलिफोर्निया के रेगिस्तानी पारिस्थितिकी तंत्र से एक खाद्य श्रृंखला दिखाता है।
इस खाद्य श्रृंखला में, युक्का कीट एक उपभोक्ता है। क्यों?
|
[
"यह अपना भोजन खुद बनाता है।",
"यह किसी अन्य जीवित चीज़ को खाता है।"
] | 1 |
closed choice
|
grade3
|
natural science
|
biology
|
Ecosystems
|
Identify roles in food chains
|
Every living thing needs food to stay alive. Living things get their food in different ways. A food chain shows how living things in an ecosystem get their food.
Producers make their own food. Many producers use carbon dioxide, water, and sunlight to make sugar. This sugar is food for the producer.
Consumers eat other living things. Consumers cannot make their own food.
|
In this food chain, the yucca moth is a consumer because it eats another living thing. The yucca moth in this food chain eats the Mojave yucca.
|
|
केंटकी की राजधानी क्या है?
|
[
"लेक्सिंगटन",
"फ्रैंकफोर्ट",
"एंकोरेज",
"बैटन रूज"
] | 1 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Southeast
|
Frankfort is the capital of Kentucky.
|
||
संदर्भ: यह जीव पॉलीट्रिचम कम्यून है। यह वनस्पति जगत का सदस्य है।
पॉलीट्रिचम कम्यून को आम हेयरकैप मॉस भी कहा जाता है। इस पौधे को इसका सामान्य नाम इसकी भूरी, टोपी जैसी संरचनाओं से मिला है। उन संरचनाओं में बीजाणु होते हैं। बीजाणु निकलने के बाद, वे जमीन पर बस सकते हैं और नई काई में विकसित हो सकते हैं।
क्या पॉलीट्रिचम कम्यून की कोशिकाएँ अपना भोजन स्वयं बना सकती हैं?
|
[
"हाँ",
"नहीं"
] | 0 |
yes or no
|
grade4
|
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
|
Polytrichum commune is a plant. Plant cells can make their own food. Plant cells make food using photosynthesis.
|
|
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।
|
[
"भूरे रंग का पेड़ मेंढक",
"कठफोड़वा"
] | 0 |
closed choice
|
grade3
|
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 brown tree frog is an amphibian. It has moist skin and begins its life in water.
There are many kinds of tree frogs. Most tree frogs are very small. They can walk on thin branches.
A woodpecker is a bird. It has feathers, two wings, and a beak.
Woodpeckers have strong beaks. They use their beaks to drill into wood to hunt for food.
|
|
संदर्भ: नीचे दिया गया मॉडल बेरिलियम को दर्शाता है। रीलियम एक मजबूत, हल्की धातु है जिसका उपयोग अंतरिक्ष दूरबीनों के लिए दर्पण बनाने में किया जाता है।
कथन को पूरा करें।
बेरिलियम () है।
|
[
"एक प्राथमिक पदार्थ",
"एक यौगिक"
] | 0 |
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 fluorine is F, and the atomic symbol for the chemical element beryllium is Be.
Scientists use different types of models to represent substances whose atoms are bonded in different ways. One type of model is a space-filling model. The space-filling model below represents the elementary substance zirconium.
In a space-filling model, the balls represent atoms that are bonded together. The color of a ball represents a specific chemical element. The atomic symbol for that chemical element is shown in the legend.
|
Use the model to determine whether beryllium is an elementary substance or a compound.
Step 1: Interpret the model.
In the space-filling model shown above, all of the balls are the same color:
. The legend shows that light green represents the chemical element with the atomic symbol Be. So, the model shows you that beryllium is composed of one chemical element.
Step 2: Determine whether the substance is an elementary substance or a compound.
You know from Step 1 that beryllium is composed of only one chemical element. So, beryllium is an elementary substance.
|
|
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।
एडविन, एक सामग्री इंजीनियर, एथलेटिक कपड़ों के लिए जल्दी सूखने वाला कपड़ा विकसित कर रहा था। कपड़े को एक सेकंड से भी कम समय में पानी की एक बूंद को अवशोषित करने और पांच मिनट से कम समय में पूरी तरह सूखने की जरूरत थी। एडविन ने सोचा कि कपास और पॉलिएस्टर से बने कपड़े दोनों पानी को अच्छी तरह से अवशोषित करेंगे और जल्दी सूखेंगे। लेकिन उन्हें यह तय करने की जरूरत थी कि प्रत्येक सामग्री का कितना प्रतिशत उपयोग करना है।
इसलिए, उन्होंने एक नमूना कपड़ा बनाया जो 50% कपास और 50% पॉलिएस्टर था
|
[
"एथलीट कपड़े में कितना पसीना बहाएंगे",
"यदि नमूना कपड़ा एक सेकंड से भी कम समय में पानी की एक बूंद सोख लेगा",
"पानी की एक बूंद सोखने के बाद नमूना कपड़े को सूखने में कितना समय लगेगा"
] | 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 आरेख समान बंद, कठोर कंटेनरों में गैस के दो शुद्ध नमूने दिखाते 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 A",
"नमूना B",
"दोनों में से कोई नहीं; नमूनों का तापमान समान है"
] | 1 |
closed choice
|
grade6
|
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.
|
Each particle in sample B has more mass than each particle in sample A. The particles in sample B also have a higher average speed than the particles 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.
|
|
मैसाचुसेट्स की राजधानी क्या है?
|
[
"डोवर",
"बोस्टन",
"सेलम",
"ऑगस्टा"
] | 1 |
closed choice
|
grade4
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Northeast
|
Boston is the capital of Massachusetts.
|
||
संदर्भ: मोरेलेट मगरमच्छ दक्षिण अमेरिका में रहता है। इसका वैज्ञानिक नाम फ्रांसीसी प्रकृतिवादी पीएमए मोरेलेट से लिया गया है, जिन्होंने 1850 में पहली बार मगरमच्छ की पहचान की थी। प्रकृतिवादी एक वैज्ञानिक होता है जो अपने वातावरण में जीवों का अवलोकन और अध्ययन करता है।
मोरेलेट मगरमच्छ का वैज्ञानिक नाम क्या है?
|
[
"क्रोकोडाइलस मोरेलेटी",
"क्रोकोडाइलस एंथ्रोपोफैगस"
] | 0 |
closed choice
|
grade4
|
natural science
|
biology
|
Scientific names
|
Origins of scientific names
|
When a scientist identifies a new organism, he or she chooses its scientific name.
Sometimes, an organism is named after the place where it was first found. Other times, an organism is named after the scientist who first identified it. Or, the scientific name might describe the organism's physical traits.
Many of the words that make up scientific names are based on words from old languages, like Latin and classical Greek. Sometimes, English words are changed to make them sound more like Latin or Greek. The new words are then used in an organism's scientific name.
|
This organism's scientific name refers to P. M. A. Morelet.
The word moreletii refers to P. M. A. Morelet. So, the Morelet's crocodile's scientific name is Crocodylus moreletii.
|
|
यह फूलदान किस सामग्री से बना है?
|
[
"रेशम",
"कांच"
] | 1 |
closed choice
|
grade2
|
natural science
|
physics
|
Materials
|
Identify materials in objects
|
A material is a type of matter. Wood, glass, metal, and plastic are common materials.
|
Look at the picture of the flower vase.
The flower vase is made of glass.
Glass is a clear, breakable material. If you knock over a glass flower vase, it might break.
|
|
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.
|
|
कैनसस की राजधानी क्या है?
|
[
"विचिटा",
"पियरे",
"स्प्रिंगफील्ड",
"टोपेका"
] | 3 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Midwest
|
Topeka is the capital of Kansas.
|
||
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन तीन वस्तुओं में कौन सा गुण समान है?
|
[
"पारभासी",
"अपारदर्शी",
"नाजुक"
] | 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 translucent object lets light through. But you cannot see clearly through a translucent object. None of the objects are translucent.
A fragile object will break into pieces if you drop it. None of the objects are fragile.
An opaque object does not let light through. All three objects are opaque.
The property that all three objects have in common is opaque.
|
|
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।
टर्नर और मोना ने स्कूल कैफेटेरिया में अपने लंच बॉक्स खोले। न तो टर्नर और न ही मोना को वह सब मिला जो वे चाहते थे। नीचे दी गई तालिका में दिखाया गया है कि उनमें से प्रत्येक को कौन-सी वस्तुएँ चाहिए थीं:
उनके लंच की छवियों को देखें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
टर्नर का लंच मोना का लंच
टर्नर और मोना प्रत्येक को जो चाहिए वह पाने के लिए क्या व्यापार कर सकते हैं?
|
[
"टर्नर मोना की ब्रोकली के बदले अपने टमाटर का व्यापार कर सकता है।",
"टर्नर मोना की गाजर के बदले अपने टमाटर का व्यापार कर सकता है।",
"मोना टर्नर के संतरे के बदले अपनी ब्रोकली का व्यापार कर सकती",
"Mona can trade her almonds for Turner's tomatoes."
] | 0 |
closed choice
|
grade8
|
social science
|
economics
|
Basic economic principles
|
Trade and specialization
|
Look at the table and images.
Turner wants broccoli. Mona wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want.
|
||
संदर्भ: बेहतर उत्तर चुनें।
कौन सी प्रॉपर्टी इस ऑब्जेक्ट से मेल खाती है?
|
[
"स्ट्रेची",
"पारदर्शी"
] | 1 |
closed choice
|
grade3
|
natural science
|
physics
|
Materials
|
Identify properties of an object
|
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.
|
Look at the object.
Think about each property.
You can see clearly through a transparent object. The fish bowl is transparent.
A stretchy object gets longer when you pull on it. The fish bowl is not stretchy.
|
|
कौन सा देश हाइलाइट किया गया है?
|
[
"तुवालु",
"ऑस्ट्रेलिया",
"न्यूज़ीलैंड",
"पापुआ न्यू गिनी"
] | 1 |
closed choice
|
grade7
|
social science
|
geography
|
Oceania: geography
|
Identify and select countries of Oceania
|
This country is Australia.
Is Australia a country or a continent?
Both! Australia is a country in Oceania, a region made up of many lands and islands in the Pacific Ocean. Many people say that Australia is the world's smallest continent. But some people call Oceania a continent instead.
|
||
संदर्भ: नीचे दिए गए आरेख समान बंद, कठोर कंटेनरों में गैस के दो शुद्ध नमूने दिखाते 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?
|
[
"दोनों में से कोई नहीं; नमूनों का तापमान समान है",
"नमूना A",
"नमूना B"
] | 2 |
closed choice
|
grade6
|
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: चित्र: ब्लू नाइल फॉल्स।
ब्लू नाइल फॉल्स इथियोपिया में है। अफ्रीका के इस हिस्से में हवाएँ आमतौर पर दक्षिण-पूर्व से बहती हैं।
संकेत: मौसम वह है जो किसी निश्चित स्थान और समय पर वातावरण जैसा होता है। जलवायु किसी निश्चित स्थान पर मौसम का पैटर्न है।
क्या यह अंश मौसम या जलवायु का वर्णन करता है?
|
[
"जलवायु",
"मौसम"
] | 0 |
closed choice
|
grade4
|
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.
Blue Nile Falls is in Ethiopia. The winds in this part of Africa usually blow from the southeast.
The underlined part of the passage tells you about the usual wind patterns at Blue Nile Falls. This passage does not describe what the weather is like on a particular day. So, this passage describes the climate.
|
|
यह अंडे का डिब्बा किस सामग्री से बना है?
|
[
"लकड़ी",
"स्टायरोफोम"
] | 1 |
closed choice
|
grade3
|
natural science
|
physics
|
Materials
|
Identify materials in objects
|
A material is a type of matter. Wood, glass, metal, and plastic are common materials.
|
Look at the picture of the egg carton.
The egg carton is made of styrofoam.
Not all egg cartons are made of styrofoam. Some egg cartons are made of soft, gray cardboard.
|
|
फ्लोरिडा की राजधानी क्या है?
|
[
"टाम्पा",
"लिटिल रॉक",
"लारमी",
"तल्हासी"
] | 3 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Southeast
|
Tallahassee is the capital of Florida.
|
||
संदर्भः नीचे दिया गया गद्यांश एक प्रयोग का वर्णन करता है। गद्यांश को पढ़ें और फिर नीचे दिए गए निर्देशों का पालन करें।
कीरा ने दस बाल्टी तैयार कीं, प्रत्येक में एक गैलन उबलता पानी और तीन बड़े चम्मच काले कपड़े का रंग था। कीरा ने सफेद लिनन के कपड़े के वर्गों को पांच बाल्टियों में भिगोया, और सफेद सूती कपड़े के वर्गों को अन्य पांच बाल्टियों में भिगोया। सभी कपड़े के वर्गों को 15 मिनट तक भिगोया गया। कपड़े के सूखने के बाद, कीरा ने वर्गों के कालेपन को प्रकाश से गहरे तक के पैमाने पर स्कोर किया। उसने लिनन के कपड़े के कालेपन की तुलना सूती कपड़े के कालेपन से की।
आकृति: कपड़ा जिसे काले रंग से रंगा गया है।
उस प्रश्न की पहचान करें जिसका किरा का प्रयोग सबसे अच्छा उत्तर दे सकता है।
|
[
"क्या काले रंग और पानी के मिश्रण में भिगोने पर लिनन का कपड़ा सूती कपड़े की तुलना में गहरा हो जाता है?",
"क्या 30 मिनट की तुलना में 15 मिनट के लिए काले रंग और पानी के मिश्रण में भिगोने पर कपड़ा गहरा हो जाता है?"
] | 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?
| ||
किस देश को हाइलाइट किया गया है?
|
[
"माइक्रोनेशिया के संघीय राज्य",
"न्यूजीलैंड",
"तुवालु",
"टोंगा"
] | 2 |
closed choice
|
grade6
|
social science
|
geography
|
Oceania: geography
|
Identify and select countries of Oceania
|
This country is Tuvalu.
|
||
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन तीन वस्तुओं में कौन सी विशेषता समान है?
|
[
"चमकदार",
"फजी",
"नीला"
] | 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.
A shiny object reflects a lot of light. You can usually see your reflection in a shiny object. All three objects are shiny.
A fuzzy object is covered in soft hair. None of the objects are fuzzy.
Blue is a color.
This color is blue. None of the objects are blue.
The property that all three objects have in common is shiny.
|
|
दिखाई गई कॉलोनी का नाम क्या है?
|
[
"मैरीलैंड",
"वर्जीनिया",
"वाशिंगटन, डीसी",
"रोड आइलैंड"
] | 0 |
closed choice
|
grade4
|
social science
|
us-history
|
English colonies in North America
|
Identify the Thirteen Colonies
|
The colony is Maryland.
|
||
इनमें से कौन सा राज्य सबसे पूर्व में है?
|
[
"नेब्रास्का",
"लुइसियाना",
"इडाहो",
"एरिज़ोना"
] | 1 |
closed choice
|
grade3
|
social science
|
geography
|
Geography
|
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 east arrow is pointing. Louisiana is farthest east.
|
|
किस देश को हाइलाइट किया गया है?
|
[
"बहामास",
"क्यूबा",
"जमैका",
"हैती"
] | 1 |
closed choice
|
grade6
|
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.
|
||
संदर्भ: नीचे दिए गए प्रश्न का उत्तर देने के लिए ग्राफ का उपयोग करें।
रोम में औसतन सबसे गर्म महीना कौन सा है?
|
[
"दिसंबर, जनवरी और फ़रवरी",
"जुलाई और अगस्त",
"मार्च और अप्रैल"
] | 1 |
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. Temperature is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average temperature for each month. The average temperature can be used to describe the climate of a location.
A line graph can be used to show the average temperature each month. Months with higher dots on the graph have higher average temperatures.
|
To describe the average temperature trends in Rome, look at the graph.
Choice "Feb" is incorrect.
Choice "Mar" is incorrect.
Choice "Apr" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Dec" is incorrect.
Choice "Jan" is incorrect.
The average temperatures in July and August are around 23°C. These months have the highest average temperatures of all of the months. So, they are the hottest months on average.
|
|
दिखाए गए कॉलोनी का नाम क्या है?
|
[
"न्यूयॉर्क",
"रोड आइलैंड",
"उत्तरी कैरोलिना",
"न्यू जर्सी"
] | 1 |
closed choice
|
grade4
|
social science
|
us-history
|
English colonies in North America
|
Identify the Thirteen Colonies
|
The colony is Rhode Island.
|
||
संदर्भ: कौगर मांसाहारी या मांसाहारी होते हैं। वे हिरण और खरगोश जैसे स्तनधारी जीव खाते हैं। इसका मुंह मांस को फाड़ने के लिए अनुकूलित है।
चित्र: कौगर।
किस जानवर का मुंह भी मांस को फाड़ने के लिए अनुकूलित है?
|
[
"बाघ",
"मर्मोट"
] | 0 |
closed choice
|
grade3
|
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 cougar.
The cougar has a large mouth and sharp teeth. Its mouth is adapted to tear through meat. The cougar uses its large mouth to grab its prey. It uses its sharp teeth to cut up the meat of the prey into pieces it can swallow.
Now look at each animal. Figure out which animal has a similar adaptation.
The tiger has a large mouth and sharp teeth. Its mouth is adapted to tear through meat.
The marmot has large front teeth. It does not have sharp teeth. So, its mouth is not adapted to tear through meat. The marmot uses its mouth to gnaw on plant matter.
|
|
सिंक में पानी ठोस है या तरल?
|
[
"तरल",
"ठोस"
] | 0 |
closed choice
|
grade2
|
natural science
|
physics
|
States of matter
|
Classify matter as solid or liquid
|
Solid and liquid 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 shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter is a liquid, it takes the shape of its container.
Think about pouring a liquid from a cup into a bottle. The shape of the liquid is different in the cup than in the bottle. But the liquid still takes up the same amount of space.
Juice is a liquid. Honey is also a liquid.
|
The water in a sink is a liquid. A liquid takes the shape of any container it is in.
If you move the water from a sink into a different container, the water will take the shape of that container. But the water will still take up the same amount of space.
|
|
मैरीलैंड की राजधानी क्या है?
|
[
"जूनो",
"ऑगस्टा",
"एनापोलिस",
"प्रोविडेंस"
] | 2 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Northeast
|
Annapolis is the capital of Maryland.
|
||
किस देश को हाइलाइट किया गया है?
|
[
"पलाऊ",
"नाउरू",
"माइक्रोनेशिया के संघीय राज्य",
"न्यूज़ीलैंड"
] | 0 |
closed choice
|
grade7
|
social science
|
geography
|
Oceania: geography
|
Identify and select countries of Oceania
|
This country is Palau.
|
||
यूटा की राजधानी क्या है?
|
[
"हेलेना",
"अल्बानी",
"साल्ट लेक सिटी",
"प्रोवो"
] | 2 |
closed choice
|
grade4
|
social science
|
geography
|
State capitals
|
Identify the 50 state capitals
|
Salt Lake City is the capital of Utah.
|
||
न्यू जर्सी की राजधानी क्या है?
|
[
"नेवार्क",
"मोंटपेलियर",
"जर्सी सिटी",
"ट्रेंटन"
] | 3 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Northeast
|
Trenton is the capital of New Jersey.
|
||
संदर्भ: नीचे विस्कॉन्सिन में मीठे पानी की झील पारिस्थितिकी तंत्र लिटिल रॉक झील से एक खाद्य जाल है।
एक खाद्य जाल मॉडल है कि जीवों द्वारा खाया गया पदार्थ एक पारिस्थितिकी तंत्र के माध्यम से कैसे आगे बढ़ता है। एक खाद्य जाल में तीर दर्शाते हैं कि एक पारिस्थितिकी तंत्र में जीवों के बीच पदार्थ कैसे आगे बढ़ता है।
निम्नलिखित में से कौन सा जीव इस खाद्य जाल में अपघटक है?
|
[
"हरा शैवाल",
"जल साँचा",
"सुनहरा शैवाल"
] | 1 |
closed choice
|
grade5
|
natural science
|
biology
|
Ecosystems
|
Interpret food webs I
|
A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web shows how some organisms in an ecosystem can get their food.
Arrows show how matter moves.
A food web has arrows that point from one organism to another. Each arrow shows the direction that matter moves when one organism eats another organism. An arrow starts from the organism that is eaten. The arrow points to the organism that is doing the eating.
An organism in a food web can have more than one arrow pointing from it. This shows that the organism is eaten by more than one other organism in the food web.
An organism in a food web can also have more than one arrow pointing to it. This shows that the organism eats more than one other organism in the food web.
|
Decomposers help break down dead organisms into simpler matter, such as nutrients. These nutrients can then help plants and other organisms grow. In a food web, there is an arrow pointing from another organism to a decomposer. There are no arrows pointing from a decomposer to another organism.
The water mold does not have arrows pointing from it to other organisms. So, the water mold is a decomposer.
The bacteria do not have arrows pointing from them to other organisms. So, the bacteria are decomposers.
The green algae has arrows pointing from it. So, the green algae is not a decomposer.
The golden algae has an arrow pointing from it. So, the golden algae is not a decomposer.
|
|
संदर्भ: यह जीव उत्तरी अमेरिकी बीवर है। इसका वैज्ञानिक नाम कैस्टर कैनेडेंसिस है।
उत्तरी अमेरिकी बीवर के समान वंश के जीव का चयन करें।
|
[
"गौरा स्केपमेकरी",
"कैस्टर फाइबर",
"सर्वस कैनेडेंसिस"
] | 1 |
closed choice
|
grade8
|
natural science
|
biology
|
Classification and scientific names
|
Use scientific names to classify organisms
|
Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms. The second word in an organism's scientific name tells you its species within its genus.
Together, the two parts of an organism's scientific name identify its species. For example Ursus maritimus and Ursus americanus are two species of bears. They are part of the same genus, Ursus. But they are different species within the genus. Ursus maritimus has the species name maritimus. Ursus americanus has the species name americanus.
Both bears have small round ears and sharp claws. But Ursus maritimus has white fur and Ursus americanus has black fur.
|
A North American beaver's scientific name is Castor canadensis. The first word of its scientific name is Castor.
Cervus canadensis and Castor canadensis are not in the same genus.
These organisms are not in the same genus, but part of their scientific names is the same. Cervus canadensis and Castor canadensis have the same species name within their genus, canadensis. But the first words of their scientific names are different. Cervus canadensis is in the genus Cervus, and Castor canadensis is in the genus Castor.
Castor fiber is in the genus Castor. The first word of its scientific name is Castor. So, Castor fiber and Castor canadensis are in the same genus.
Goura scheepmakeri is in the genus Goura. The first word of its scientific name is Goura. So, Goura scheepmakeri and Castor canadensis are not in the same genus.
|
|
संदर्भ: ध्रुवीय भालू ठंडे आर्कटिक महासागर में और उसके आसपास रहते हैं। यह बर्फ में छिपने के लिए अनुकूलित है।
चित्र: ध्रुवीय भालू।
कौन सा जानवर बर्फ में छिपने के लिए भी अनुकूलित है?
|
[
"आर्कटिक खरगोश",
"ऊँट"
] | 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 polar bear.
The polar bear has white fur covering its body. It is adapted to be camouflaged in the snow. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
During the winter, the Arctic hare has white fur covering its body. It is adapted to be camouflaged in the snow.
The camel has sand-colored fur covering its skin. It is not adapted to be camouflaged in the snow.
|
|
कौन सा महासागर हाइलाइट किया गया है?
|
[
"हिंद महासागर",
"अटलांटिक महासागर",
"प्रशांत महासागर",
"दक्षिणी 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 Atlantic Ocean.
|
|
संदर्भ: गद्यांश को पढ़ें। फिर प्रश्न का उत्तर दें।
सफ़ेद समुद्री अर्चिन उष्णकटिबंधीय महासागरों में रहते हैं। समुद्री अर्चिन कठोर, तीखे कांटों से ढके होते हैं। ये भाले के आकार के कांटे समुद्री अर्चिन को शिकारियों, जैसे मछली से बचाते हैं। कभी-कभी एक छोटा कीड़ा, जिसे ब्रिसल वर्म कहा जाता है, सुरक्षा के लिए कांटों का भी उपयोग करता है।
कीड़ा समुद्री अर्चिन पर, कांटों के बीच रहता है। समुद्री अर्चिन के शरीर पर एक कीड़े पर हमला करने के लिए, एक मछली को कांटों को पार करना होगा। जब कीड़ा समुद्री अर्चिन पर रहता है, तो कीड़ा समुद्री अर्चिन के जीवित रहने की क्षमता को नहीं बदलता है।
चित्र: महासागर में एक सफ़ेद समुद्री अर्चिन।
जब एक ब्रिसल कीड़ा सफ़ेद समुद्री अर्चिन पर रहता है, तो किस प्रकार का संबंध बनता है?
|
[
"पारस्परिक",
"सहभोजी",
"परजीवी"
] | 1 |
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 a bristle worm lives on a white sea urchin, the worm is protected from predators by the sea urchin's sharp spines. So, the worm benefits from its relationship with the sea urchin.
The sea urchin's ability to survive does not change when a worm lives on it. So, the sea urchin is not significantly affected by its relationship with the worm.
Since the worm benefits and the sea urchin is not significantly affected, a commensal relationship is formed when a bristle worm lives on a white sea urchin.
|
|
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन तीन वस्तुओं में कौन सा गुण समान है?
|
[
"खुरदरा",
"पीला",
"चिपचिपा"
] | 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 rough object feels scratchy when you touch it. The rain boots and the rubber duck are not rough.
A sticky object can attach or stick to other things. The rain boots and the rubber duck are not sticky.
Yellow is a color.
This color is yellow. All three objects are yellow.
The property that all three objects have in common is yellow.
|
|
इनमें से कौन सा राज्य सबसे पूर्व में है?
|
[
"जॉर्जिया",
"डेलावेयर",
"नॉर्थ डकोटा",
"कोलोराडो"
] | 1 |
closed choice
|
grade4
|
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 east arrow is pointing. Delaware is farthest east.
|
|
संदर्भ: यह जीव एक महान सफेद शार्क है। इसे कार्चारोडोन कार्चारियास भी कहा जाता है।
इस जीव का वैज्ञानिक नाम क्या है?
|
[
"कार्चारोडोन कार्चारियास",
"महान सफेद शार्क"
] | 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.
|
Carcharodon carcharias is written in italics. The first word is capitalized, and the second word is not.
So, Carcharodon carcharias is the scientific name.
|
|
संदर्भ: नीचे दिए गए प्रश्न का उत्तर देने के लिए ग्राफ का उपयोग करें।
क्राइस्टचर्च में औसतन सबसे अधिक बारिश वाला महीना कौन सा है?
|
[
"अगस्त",
"अप्रैल",
"मई"
] | 2 |
closed choice
|
grade3
|
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.
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 Christchurch, look at the graph.
Choice "Apr" is incorrect.
Choice "May" is incorrect.
Choice "Aug" is incorrect.
May has an average monthly precipitation of about 70 millimeters. This is higher than in any other month. So, May is the wettest month on average.
|
|
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.
|
|
कौन सा महासागर हाइलाइट किया गया है?
|
[
"दक्षिणी महासागर",
"प्रशांत महासागर",
"अटलांटिक महासागर",
"हिंद 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 Southern Ocean.
The Southern Ocean reaches from the shores of Antarctica to 60° South latitude.
|
|
कोलोराडो की राजधानी क्या है?
|
[
"ओलंपिया",
"डेनवर",
"कार्सन सिटी",
"लुइसविले"
] | 1 |
closed choice
|
grade4
|
social science
|
geography
|
State capitals
|
Identify state capitals of the West
|
Denver is the capital of Colorado.
|
||
कौन सा देश हाइलाइट किया गया है?
|
[
"ऑस्ट्रेलिया",
"मार्शल द्वीप",
"न्यूज़ीलैंड",
"पापुआ न्यू गिनी"
] | 2 |
closed choice
|
grade6
|
social science
|
geography
|
Oceania: geography
|
Identify and select countries of Oceania
|
This country is New Zealand.
|
||
इनमें से कौन सा राज्य सबसे दक्षिण में है?
|
[
"मिसौरी",
"मिशिगन",
"मेन",
"ओरेगन"
] | 0 |
closed choice
|
grade4
|
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 south arrow is pointing. Missouri is farthest south.
|
|
इनमें से कौन सा शहर मानचित्र पर अंकित है?
|
[
"मियामी",
"अटलांटा",
"नैशविले",
"ओक्लाहोमा सिटी"
] | 1 |
closed choice
|
grade4
|
social science
|
geography
|
Cities
|
Cities of the Southeast
|
The city is Atlanta, Georgia. Oklahoma City, Nashville, and Miami are marked with gray circles on the map below.
|
||
संदर्भ: नीचे कैलिफोर्निया के तट से दूर मोंटेरी खाड़ी में एक समुद्री पारिस्थितिकी तंत्र से एक खाद्य जाल है।
एक खाद्य जाल मॉडल है कि जीवों द्वारा खाया गया पदार्थ एक पारिस्थितिकी तंत्र के माध्यम से कैसे आगे बढ़ता है। एक खाद्य जाल में तीर दर्शाते हैं कि एक पारिस्थितिकी तंत्र में जीवों के बीच पदार्थ कैसे आगे बढ़ता है।
इस खाद्य जाल में, किस जीव में ऐसा पदार्थ होता है जो अंततः बैट स्टार में चला जाता है?
|
[
"समुद्री ककड़ी",
"समुद्री ऊदबिलाव",
"फाइटोप्लांकटन"
] | 2 |
closed choice
|
grade6
|
natural science
|
biology
|
Ecological interactions
|
Interpret food webs II
|
A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web shows how some organisms in an ecosystem can get their food.
Arrows show how matter moves.
A food web has arrows that point from one organism to another. Each arrow shows the direction that matter moves when one organism eats another organism. An arrow starts from the organism that is eaten. The arrow points to the organism that is doing the eating.
An organism in a food web can have more than one arrow pointing from it. This shows that the organism is eaten by more than one other organism in the food web.
An organism in a food web can also have more than one arrow pointing to it. This shows that the organism eats more than one other organism in the food web.
|
Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows to the bat star.There are four paths matter can take from the phytoplankton to the bat star: phytoplankton->zooplankton->kelp bass->bat star. phytoplankton->zooplankton->plainfin midshipman->kelp bass->bat star. phytoplankton->zooplankton->black rockfish->kelp bass->bat star. phytoplankton->plainfin midshipman->kelp bass->bat star. There are three paths matter can take from the zooplankton to the bat star: zooplankton->kelp bass->bat star. zooplankton->plainfin midshipman->kelp bass->bat star. zooplankton->black rockfish->kelp bass->bat star. sea otter. The only arrow pointing from the sea otter leads to the orca. The only arrow pointing from the orca leads to the sea cucumber. No arrows point from the sea cucumber to any other organisms. So, in this food web, matter does not move from the sea otter to the bat star.. sea cucumber. No arrows point from the sea cucumber to any other organisms. So, in this food web, matter does not move from the sea cucumber to the bat star..
|
|
संदर्भ: नीचे दिया गया गद्यांश एक प्रयोग का वर्णन करता है। गद्यांश को पढ़ें और फिर नीचे दिए गए निर्देशों का पालन करें।
डकोटा ने छह गमलों में से प्रत्येक में मिट्टी की सतह से आधा इंच नीचे 25 टमाटर के बीज लगाए। डकोटा ने छह में से तीन गमलों में समान मात्रा में उर्वरक डाला। उसने गमलों को एक पौध विकास कक्ष में रखा जहाँ सभी बीजों को समान तापमान, प्रकाश की मात्रा और आर्द्रता का स्तर प्राप्त हुआ। दो सप्ताह के बाद, डकोटा ने प्रत्येक गमले में उगने वाले पौधों की संख्या गिनी। उसने उर्वरक वाले गमलों में पौधों की संख्या की तुलना उर्वरक के बिना गमलों में पौधों की संख्या से की।
चित्र: मिट्टी में उग रहे टमाटर के पौधे।
उस प्रश्न की पहचान करें जिसका डकोटा का प्रयोग सबसे अच्छा उत्तर दे सकता है।
|
[
"क्या उर्वरक के बिना मिट्टी की तुलना में उर्वरक वाली मिट्टी में लगाए जाने पर अधिक टमाटर के पौधे उगते हैं?",
"जहां टमाटर के बीज लगाए जाते हैं वहां आर्द्रता का स्तर बढ़ने वाले टमाटर के पौधों की संख्या को प्रभावित करता है?"
] | 0 |
closed choice
|
grade8
|
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?
| ||
कैलिफोर्निया की राजधानी क्या है?
|
[
"सैक्रामेंटो",
"रेनो",
"लॉस एंजिल्स",
"सैन फ्रांसिस्को"
] | 0 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify state capitals of the West
|
Sacramento is the capital of California.
|
||
किस महाद्वीप को हाइलाइट किया गया है?
|
[
"ऑस्ट्रेलिया",
"अफ्रीका",
"दक्षिण अमेरिका",
"यूरोप"
] | 2 |
closed choice
|
grade4
|
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 South America.
|
|
संदर्भ: नीचे दिया गया गद्यांश एक प्रयोग का वर्णन करता है। गद्यांश को पढ़ें और फिर नीचे दिए गए निर्देशों का पालन करें।
हैरी ने छह टेस्ट ट्यूबों में से प्रत्येक में एक दो इंच की स्टील की कील डाली। 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। हैरी 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 की कील।
उस प्रश्न को पहचानिए जिसका हैरी 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
|
grade8
|
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?
| ||
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?
चार सबसे छोटे ग्रहों में से दो मुख्य रूप से गैस से बने हैं।
|
[
"असत्य",
"सत्य"
] | 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
|
To decide which four planets are the smallest, look at the volumes and compare the exponents. The volumes of Mercury, Venus, Earth, and Mars have the smallest exponents. So, these four planets are the smallest.
These four planets are made mainly of rock. So, of the four smallest planets, none are made mainly of gas.
|
|
कोलोराडो की राजधानी क्या है?
|
[
"डेनवर",
"कॉनकॉर्ड",
"कोलंबिया",
"चार्लोट"
] | 0 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify the 50 state capitals
|
Denver is the capital of Colorado.
|
||
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 और आकृति के 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 का परिमाण अधिक है।",
"जोड़ी 1 में चुंबकीय बल का परिमाण अधिक है।",
"दोनों जोड़ों में चुंबकीय बल का परिमाण समान है।"
] | 1 |
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 using magnets of different sizes. The magnitude of the magnetic force is greater when the magnets are larger.
|
The magnets in Pair 2 attract. The magnets in Pair 1 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.
|
|
संदर्भ: चूहों के एक समूह में, कुछ व्यक्तियों का शरीर सामान्य आकार का होता है और अन्य का शरीर बौना होता है। इस समूह में, शरीर के आकार की विशेषता के लिए जीन में दो एलील होते हैं। बौने शरीर (बी) के लिए एलील सामान्य आकार के शरीर (बी) के लिए एलील के लिए अप्रभावी है।
यह पुनेट वर्ग दो चूहों के बीच एक क्रॉस दिखाता है।
सामान्य आकार के शरीर वाले संतानों और बौने शरीर वाले संतानों का अपेक्षित अनुपात क्या है? सबसे संभावित अनुपात चुनें।
|
[
"1:3",
"4:0",
"0:4",
"2:2",
"3:1"
] | 1 |
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 a normal-sized body or a dwarf body, consider whether each phenotype is the dominant or recessive allele's version of the body size trait. The question tells you that the b allele, which is for a dwarf body, is recessive to the B allele, which is for a normal-sized body.
A normal-sized body is the dominant allele's version of the body size trait. A rat with the dominant version of the body size trait must have at least one dominant allele for the body size gene. So, offspring with a normal-sized body must have the genotype BB or Bb.
All 4 boxes in the Punnett square have the genotype BB or Bb.
A dwarf body is the recessive allele's version of the body size trait. A rat with the recessive version of the body size trait must have only recessive alleles for the body size gene. So, offspring with a dwarf body must have the genotype bb.
There are 0 boxes in the Punnett square with the genotype bb.
So, the expected ratio of offspring with a normal-sized body to offspring with a dwarf body is 4:0. This means that, based on the Punnett square, this cross will always produce offspring with a normal-sized body. This cross is expected to never produce offspring with a dwarf body.
|
|
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",
"ज़हरीला डार्ट मेंढक",
"महान सफेद शार्क",
"पेंगुइन"
] | 2 |
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 penguin is a bird. It has feathers, two wings, and a beak.
Penguins live near water. Penguins cannot fly! They use their wings to swim.
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 great white shark is a fish. It lives underwater. It has fins, not limbs.
Great white sharks can live for up to 70 years.
A poison dart frog is an amphibian. It has moist skin and begins its life in water.
Poison dart frogs come in many bright colors. Their bright color warns other animals that these frogs are poisonous.
|
|
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।
क्लारा और हैरी ने स्कूल कैफेटेरिया में अपने लंच बॉक्स खोले। न तो क्लारा और न ही हैरी को वह सब मिला जो वे चाहते थे। नीचे दी गई तालिका में दिखाया गया है कि उनमें से प्रत्येक को कौन सी वस्तुएँ चाहिए थीं:
उनके लंच की छवियों को देखें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
क्लारा का लंच हैरी का लंच
क्लारा और हैरी प्रत्येक को जो चाहिए वह पाने के लिए क्या व्यापार कर सकते हैं?
|
[
"हैरी क्लारा के टमाटरों के बदले अपने बादाम का व्यापार कर सकता है।",
"क्लारा अपने टमाटरों के बदले हैरी की गाजर दे सकती है।",
"हैरी क्लारा के संतरे के बदले अपनी ब्रोकली का व्यापार कर सकता",
"Clara can trade her tomatoes for Harry's broccoli."
] | 3 |
closed choice
|
grade8
|
social science
|
economics
|
Basic economic principles
|
Trade and specialization
|
Look at the table and images.
Clara wants broccoli. Harry wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want.
|
||
संदर्भ: बेहतर उत्तर चुनें।
इन दो वस्तुओं में कौन सी विशेषता समान है?
|
[
"खट्टा",
"लचीला"
] | 0 |
closed choice
|
grade2
|
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.
Different objects can have the same properties. You can use these properties to put objects into groups.
|
Look at each object.
For each object, decide if it has that property.
A lemon has a sour taste. Both objects are sour.
A stretchy object gets longer when you pull on it. Neither of the objects are stretchy.
The property that both objects have in common is sour.
|
|
दिखाए गए कॉलोनी का नाम क्या है?
|
[
"उत्तरी कैरोलिना",
"मिसिसिपी",
"न्यूयॉर्क",
"मैसाचुसेट्स"
] | 2 |
closed choice
|
grade8
|
social science
|
us-history
|
Colonial America
|
Identify the Thirteen Colonies
|
The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony.
|
||
दिखाई गई कॉलोनी का नाम क्या है?
|
[
"मैसाचुसेट्स",
"वर्जीनिया",
"जॉर्जिया",
"न्यू हैम्पशायर"
] | 1 |
closed choice
|
grade8
|
social science
|
us-history
|
Colonial 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.
|
||
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 अवतरण वर्णन करता है कि किसी समस्या के समाधान का परीक्षण करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कैसे किया गया। अवतरण पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
चार्लोट गोदाम की अलमारियों से सामान उठाने के लिए ड्रोन नामक छोटे विमान डिजाइन कर रही थी। वह जानती थी कि गोदाम से उड़ते समय अगर ड्रोन किसी चीज से टकराते हैं तो उनके प्रोपेलर ब्लेड क्षतिग्रस्त हो जाएंगे। इसलिए, चार्लोट प्रोपेलर ब्लेड की सुरक्षा के लिए ब्लेड गार्ड जोड़ना चाहती थी। गार्ड को मजबूत होना था ताकि वे दुर्घटना में टूट न जाएं। लेकिन उसने सोचा कि यदि गार्ड का वजन बहुत अधिक होगा, तो ड्रोन अच्छी तरह से नहीं उड़ पाएगा।
इसलिए, चार्लोट ने एक ड्रोन पर हल्की धातु से बने गार्ड लगाए
|
[
"क्या दुर्घटना में ब्लेड गार्ड टूट जाएंगे",
"यदि ब्लेड गार्ड जोड़ने से ड्रोन खराब तरीके से उड़ेगा",
"ब्लेड गार्ड के साथ ड्रोन का वजन कितना होगा"
] | 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: 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 का परिमाण अधिक है।",
"दोनों जोड़ों में चुंबकीय बल का परिमाण समान है।",
"जोड़ी 1 में चुंबकीय बल का परिमाण अधिक है।"
] | 0 |
closed choice
|
grade8
|
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 greater when there is a smaller distance between the magnets.
|
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1.
|
|
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।",
"दोनों जोड़ों में चुंबकीय बल की ताकत समान है।",
"जोड़ी 1 में चुंबकीय बल अधिक मजबूत 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.
You can change the strength of a magnetic force between two magnets by changing the distance between them. The magnetic force is stronger when the magnets are closer together.
|
Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2.
|
|
संदर्भ: नीचे वर्जीनिया के वन पारिस्थितिकी तंत्र, शेनानडोह नेशनल पार्क से एक खाद्य जाल है।
एक खाद्य जाल मॉडल है कि जीवों द्वारा खाया गया पदार्थ एक पारिस्थितिकी तंत्र के माध्यम से कैसे आगे बढ़ता है। खाद्य जाल में तीर दर्शाते हैं कि एक पारिस्थितिकी तंत्र में जीवों के बीच पदार्थ कैसे आगे बढ़ता है।
इस खाद्य जाल में निम्नलिखित में से कौन सा जीव सर्वाहारी है?
|
[
"ब्लैक रेसर",
"ग्रे फॉक्स",
"सिल्वर मेपल",
"ब्लैक बियर"
] | 3 |
closed choice
|
grade7
|
natural science
|
biology
|
Ecological interactions
|
Interpret food webs I
|
A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web shows how some organisms in an ecosystem can get their food.
Arrows show how matter moves.
A food web has arrows that point from one organism to another. Each arrow shows the direction that matter moves when one organism eats another organism. An arrow starts from the organism that is eaten. The arrow points to the organism that is doing the eating.
An organism in a food web can have more than one arrow pointing from it. This shows that the organism is eaten by more than one other organism in the food web.
An organism in a food web can also have more than one arrow pointing to it. This shows that the organism eats more than one other organism in the food web.
|
Omnivores are consumers that eat both producers and other consumers. So, an omnivore has arrows pointing to it from at least one producer and at least one consumer.
The black bear has an arrow pointing to it from the persimmon tree, which is a producer. The black bear also has arrows pointing to it from the swallowtail caterpillar and the beaver, which are consumers. The black bear eats a producer and consumers, so it is an omnivore.
The gray fox has two arrows pointing to it. These arrows start from the swallowtail caterpillar and the pine vole, which are both consumers. So, the gray fox is a consumer but not an omnivore.
The pine vole has an arrow pointing to it from the persimmon tree, which is a producer. The pine vole also has an arrow pointing to it from the swallowtail caterpillar, which is a consumer. The pine vole eats a producer and a consumer, so it is an omnivore.
The silver maple does not have any arrows pointing to it. So, the silver maple is not an omnivore.
The black racer has only one arrow pointing to it. This arrow starts from the pine vole, which is a consumer. So, the black racer is a consumer but not an omnivore.
|
|
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन चार वस्तुओं में कौन सा गुण समान है?
|
[
"अपारदर्शी",
"नाजुक",
"चिकनी"
] | 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.
An opaque object does not let light through. All four objects are opaque.
A fragile object will break into pieces if you drop it. The ceramic mug is fragile, but the rock and the binder are not.
A smooth object is not scratchy or rough. The ceramic mug is smooth, but the rock are not.
The property that all four objects have in common is opaque.
|
|
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?
|
[
"जोड़ी 1 में चुंबकीय बल का परिमाण कम है।",
"जोड़ी 2 में चुंबकीय बल का परिमाण कम है।",
"दोनों जोड़ों में चुंबकीय बल का परिमाण समान है।"
] | 1 |
closed choice
|
grade5
|
natural science
|
physics
|
Magnets
|
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 2 than in Pair 1. So, the magnitude of the magnetic force is smaller in Pair 2 than in Pair 1.
|
|
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।
रीड और डैनियल ने स्कूल कैफेटेरिया में अपने लंच बॉक्स खोले। न तो रीड और न ही डैनियल को वह सब मिला जो वे चाहते थे। नीचे दी गई तालिका में दिखाया गया है कि उनमें से प्रत्येक को कौन सी वस्तुएँ चाहिए थीं:
उनके लंच की छवियों को देखें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
रीड का लंच डैनियल का लंच
रीड और डैनियल क्या व्यापार कर सकते हैं ताकि प्रत्येक को वह मिले जो वे चाहते हैं?
|
[
"रीड अपने टमाटरों के बदले डैनियल की गाजर दे सकता है।",
"डैनियल अपनी ब्रोकली के बदले रीड के संतरे दे सकता है।",
"रीड अपने टमाटरों के बदले डैनियल की ब्रोकली दे सकता",
"Daniel can trade his almonds for Reid's tomatoes."
] | 2 |
closed choice
|
grade8
|
social science
|
economics
|
Basic economic principles
|
Trade and specialization
|
Look at the table and images.
Reid wants broccoli. Daniel wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want.
|
||
संदर्भ: बेहतर उत्तर चुनें।
कौन सी प्रॉपर्टी इस ऑब्जेक्ट से मेल खाती है?
|
[
"लचीला",
"नाजुक"
] | 1 |
closed choice
|
grade3
|
natural science
|
physics
|
Materials
|
Identify properties of an object
|
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.
|
Look at the object.
Think about each property.
A fragile object will break into pieces if you drop it. The ceramic mug is fragile.
A flexible object can be folded or bent without breaking easily. The ceramic mug is not flexible.
|
|
संदर्भ: नीचे दिया गया गद्यांश एक प्रयोग का वर्णन करता है। गद्यांश को पढ़ें और फिर नीचे दिए गए निर्देशों का पालन करें।
जीनेट ने एक विद्युत परिपथ बनाया: उसने एक बैटरी को प्रकाश बल्ब से, प्रकाश बल्ब को तांबे के एक छोटे टुकड़े से और तांबे को वापस बैटरी से जोड़ने के लिए तारों का उपयोग किया। जब परिपथ पूरा हो गया, तो प्रकाश चालू हो गया। जीनेट ने पाँच सेकंड के लिए प्रकाश की चमक का निरीक्षण किया। फिर उसने तांबे को बराबर आकार के लोहे के टुकड़े से बदल दिया और नोट किया कि क्या प्रकाश अधिक चमकीला या मंद हो गया। जीनेट ने उसी प्रकार के तीन और परिपथ बनाए। उसने प्रत्येक परिपथ के साथ परीक्षण दोहराया। जीनेट ने रिकॉर्ड किया कि क्या परिपथों ने अधिक चमकीला प्रकाश उत्पन्न किया जब परिपथ में तांबा शामिल था या जब परिपथ में लोहा शामिल था।
चित्र: एक परिपथ जिसमें बैटरी, एक प्रकाश बल्ब और तांबे का एक टुकड़ा है।
उस प्रश्न की पहचान करें जिसका जीनेट का प्रयोग सबसे अच्छा उत्तर दे सकता है।
|
[
"क्या लोहे वाले परिपथ तांबे वाले परिपथों की तुलना में कम रोशनी उत्पन्न करते हैं?",
"क्या प्रकाश बल्ब लंबे समय तक जल सकते हैं जब परिपथ में तांबा शामिल हो या जब परिपथ में लोहा शामिल हो?"
] | 0 |
closed choice
|
grade8
|
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?
| ||
संदर्भ: बेहतर उत्तर चुनें।
इन दो वस्तुओं में कौन सी विशेषता समान है?
|
[
"खट्टा",
"नीला"
] | 0 |
closed choice
|
grade2
|
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.
Different objects can have the same properties. 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. Neither of the objects are blue.
A lemon has a sour taste. Both objects are sour.
The property that both objects have in common is sour.
|
|
संदर्भः नीचे दिया गया गद्यांश एक प्रयोग का वर्णन करता है। गद्यांश को पढ़ें और फिर नीचे दिए गए निर्देशों का पालन करें।
वांडा ने अपने स्नोबोर्ड के नीचे मोम की एक पतली परत लगाई और बोर्ड को सीधे पहाड़ी से नीचे उतारा। फिर, उसने मोम हटा दिया और स्नोबोर्ड को फिर से सीधे पहाड़ी से नीचे उतारा। उसने सवारी को चार बार और दोहराया, चाहे वह बोर्ड पर मोम की पतली परत के साथ सवार हो या नहीं। उसके दोस्त अर्नेस्ट ने प्रत्येक सवारी का समय लिया। वांडा और अर्नेस्ट ने मोम के बिना स्नोबोर्ड पर औसत समय की तुलना में मोम के साथ स्नोबोर्ड पर पहाड़ी से सीधे नीचे फिसलने में लगने वाले औसत समय की गणना की।
चित्र: पहाड़ी से नीचे स्नोबोर्डिंग।
उस प्रश्न की पहचान करें जिसका वांडा और अर्नेस्ट का प्रयोग सबसे अच्छा उत्तर दे सकता है।
|
[
"क्या वांडा का स्नोबोर्ड कम समय में पहाड़ी से नीचे फिसलता है जब उस पर मोम की पतली परत होती है या मोम की मोटी परत होती है",
"Does Wanda's snowboard slide down a hill in less time when it has a layer of wax or when it does not have a layer of wax?"
] | 1 |
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?
| ||
संदर्भ: स्लेज डॉग टीम बर्फ पर स्लेज चला रही है। टीम स्लेज को आगे की ओर खींचने के लिए बल का उपयोग करती है।
इस खिंचाव की दिशा क्या है?
|
[
"स्लेज डॉग टीम से दूर",
"स्लेज डॉग टीम 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 dogs pull the sled. The direction of the pull is toward the sled dog team.
|
|
कौन सा राज्य हाइलाइट किया गया है?
|
[
"ओहियो",
"साउथ डकोटा",
"नेब्रास्का",
"इंडियाना"
] | 3 |
closed choice
|
grade5
|
social science
|
geography
|
States
|
Identify states of the Midwest
|
This state is Indiana.
|
||
संदर्भ: निम्नलिखित मानचित्र दर्शाता है कि दुनिया के कई प्रमुख धर्म कहाँ से उत्पन्न हुए या कहाँ से शुरू हुए। मानचित्र को देखें। फिर नीचे दिए गए वाक्य को पूरा करें।
वाक्य को पूरा करें।
ईसाई धर्म और () की उत्पत्ति दुनिया के एक ही क्षेत्र में हुई।
|
[
"बौद्ध धर्म",
"यहूदी धर्म",
"योरूबा",
"हिंदू धर्म"
] | 1 |
closed choice
|
grade7
|
social science
|
world-history
|
World religions
|
Origins of Christianity
|
Look at the map.
The markers representing Christianity and Judaism are close together, so they originated in the same region of the world. Both religions started in the Middle East. In fact, Christianity actually started as a form of Judaism!
The other choices are not correct. Hinduism and Buddhism originated in present-day India, and Yoruba is an African religion that started near present-day Nigeria.
|
||
कौन सा महाद्वीप हाइलाइट किया गया है?
|
[
"उत्तरी अमेरिका",
"यूरोप",
"ऑस्ट्रेलिया",
"दक्षिण अमेरिका"
] | 3 |
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 South America.
|
|
संदर्भ: स्कार्लेट मैका मध्य और दक्षिण अमेरिका के जंगलों में रहते हैं। वे बड़े बीज और मेवे खाते हैं। 'की चोंच का आकार बड़े, कठोर मेवे तोड़ने के लिए अनुकूलित है।
चित्र: स्कार्लेट मैका।
किस पक्षी की चोंच भी बड़े, कठोर मेवे तोड़ने के लिए अनुकूलित है?
|
[
"अफ्रीकी ग्रे तोता",
"सफेद नोक वाला सिकलबिल"
] | 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 a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. A short, thick beak might help a bird break through a seed's hard shell. Birds that eat similar food often have similar beaks.
|
Look at the picture of the scarlet macaw.
The scarlet macaw has a thick hooked beak. Its beak is adapted to crack large, hard nuts. The scarlet macaw uses its thick beak to crack the shell of a nut by squeezing it. The hooked shape of the beak can help the bird hold the nut in place while cracking it.
Now look at each bird. Figure out which bird has a similar adaptation.
The African gray parrot has a thick hooked beak. Its beak is adapted to crack large, hard nuts.
The white-tipped sicklebill has a long, thin, curved beak. Its beak is not adapted to crack large, hard nuts. The white-tipped sicklebill uses its beak to drink nectar out of long flowers.
|
|
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 A",
"दोनों में से कोई नहीं; उनकी सांद्रता समान है",
"विलयन B"
] | 2 |
closed choice
|
grade6
|
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.
|
|
दिखाई गई कॉलोनी का नाम क्या है?
|
[
"मैरीलैंड",
"न्यूयॉर्क",
"इलिनोइस",
"कनेक्टिकट"
] | 0 |
closed choice
|
grade8
|
social science
|
us-history
|
Colonial America
|
Identify the Thirteen Colonies
|
The colony is Maryland.
|
||
न्यू जर्सी की राजधानी क्या है?
|
[
"ऑगस्टा",
"मोंटपेलियर",
"न्यूर्क",
"ट्रेंटन"
] | 3 |
closed choice
|
grade5
|
social science
|
geography
|
State capitals
|
Identify state capitals of the Northeast
|
Trenton is the capital of New Jersey.
|
||
न्यू मैक्सिको की राजधानी क्या है?
|
[
"अल्बुकर्क",
"सांता फ़े",
"कार्सन सिटी",
"लेक्सिंगटन"
] | 1 |
closed choice
|
grade3
|
social science
|
geography
|
State capitals
|
Identify state capitals of the West
|
Santa Fe is the capital of New Mexico.
|
||
संदर्भ: यह चित्र पैलियोपाइथन नामक एक प्राचीन जानवर के जीवाश्म को दर्शाता है। पैलियोपाइथन पेड़ों पर रहता था और छह फीट से अधिक लंबा हो सकता था।
पैलियोपाइथन में कौन सी विशेषता थी? जीवाश्म पर आप जो विशेषता देख सकते हैं उसे चुनें।
|
[
"इसकी त्वचा पर काली धारियाँ",
"इसके शरीर पर बड़े पंख",
"एक लंबा, पतला शरीर"
] | 2 |
closed choice
|
grade3
|
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.
| ||
संदर्भ: स्फालराइट के निम्नलिखित गुण हैं:
जीवित चीजों द्वारा नहीं बनाया गया
ठोस
शुद्ध पदार्थ
प्रकृति में पाया गया
निश्चित क्रिस्टल संरचना
क्या स्फालराइट एक खनिज है?
|
[
"नहीं",
"हाँ"
] | 1 |
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.
|
Sphalerite has all the properties of a mineral. So, sphalerite is a mineral.
|
|
संदर्भ: यह जीव यूरेशियन बीवर है। इसका वैज्ञानिक नाम कैस्टर फाइबर है।
यूरेशियन बीवर जैसी ही प्रजाति के जीव का चयन करें।
|
[
"कैस्टर फाइबर",
"ओविस कैनेडेंसिस",
"लोंट्रा कैनेडेंसिस"
] | 0 |
closed choice
|
grade4
|
natural science
|
biology
|
Scientific names
|
Use scientific names to classify organisms
|
Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms. The second word in an organism's scientific name tells you its species within its genus.
Together, the two parts of an organism's scientific name identify its species. For example Ursus maritimus and Ursus americanus are two species of bears. They are part of the same genus, Ursus. But they are different species within the genus. Ursus maritimus has the species name maritimus. Ursus americanus has the species name americanus.
Both bears have small round ears and sharp claws. But Ursus maritimus has white fur and Ursus americanus has black fur.
|
A Eurasian beaver's scientific name is Castor fiber.
Ovis canadensis does not have the same scientific name as a Eurasian beaver. So, Castor fiber and Ovis canadensis are not in the same species.
Lontra canadensis does not have the same scientific name as a Eurasian beaver. So, Castor fiber and Lontra canadensis are not in the same species.
Castor fiber has the same scientific name as a Eurasian beaver. So, these organisms are in the same species.
|
|
संदर्भ: यह जीव एक बर्फीला उल्लू है। इसका वैज्ञानिक नाम बुबो स्कैंडिअस है।
बर्फीले उल्लू की ही प्रजाति के जीव का चयन करें।
|
[
"बुबो स्कैंडिअस",
"आर्डिया हीरोडियास",
"पेलेकेनस एरिथ्रोरिनचोस"
] | 0 |
closed choice
|
grade5
|
natural science
|
biology
|
Scientific names
|
Use scientific names to classify organisms
|
Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms. The second word in an organism's scientific name tells you its species within its genus.
Together, the two parts of an organism's scientific name identify its species. For example Ursus maritimus and Ursus americanus are two species of bears. They are part of the same genus, Ursus. But they are different species within the genus. Ursus maritimus has the species name maritimus. Ursus americanus has the species name americanus.
Both bears have small round ears and sharp claws. But Ursus maritimus has white fur and Ursus americanus has black fur.
|
A snowy owl's scientific name is Bubo scandiacus.
Bubo scandiacus has the same scientific name as a snowy owl. So, these organisms are in the same species.
Ardea herodias does not have the same scientific name as a snowy owl. So, Bubo scandiacus and Ardea herodias are not in the same species.
Pelecanus erythrorhynchos does not have the same scientific name as a snowy owl. So, Bubo scandiacus and Pelecanus erythrorhynchos are not in the same species.
|
|
संदर्भ: सबसे अच्छा उत्तर चुनें।
इन तीन वस्तुओं में कौन सा गुण समान है?
|
[
"लचीला",
"पारदर्शी",
"अपारदर्शी"
] | 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.
An opaque object does not let light through. None of the objects are opaque.
A flexible object can be folded or bent without breaking easily. The glass and the glass flask are not flexible.
You can see clearly through a transparent object. All three objects are transparent.
The property that all three objects have in common is transparent.
|
|
इस विज्ञापन में प्रयुक्त मुख्य प्रेरक अपील कौन सी है?
|
[
"पाथोस (भावना)",
"एथोस (चरित्र)",
"लोगो (कारण)"
] | 1 |
closed choice
|
grade7
|
language science
|
writing-strategies
|
Persuasive strategies
|
Identify appeals to ethos, pathos, and logos in advertisements
|
The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one of the following:
say that a brand has been trusted for many years
note that a brand is recommended by a respected organization or celebrity
include a quote from a "real person" who shares the audience's values
Appeals to logos, or reason, use logic and specific evidence. An ad that appeals to logos might do one of the following:
use graphs or charts to display information
mention the results of scientific studies
explain the science behind a product or service
Appeals to pathos, or emotion, use feelings rather than facts to persuade the audience. An ad that appeals to pathos might do one of the following:
trigger a fear, such as the fear of embarrassment
appeal to a desire, such as the desire to appear attractive
link the product to a positive feeling, such as adventure, love, or luxury
|
The ad appeals to ethos, or character. It includes an endorsement (seal of approval) from a respected organization.
|
|
दिखाई गई कॉलोनी का नाम क्या है?
|
[
"मेन",
"रोड आइलैंड",
"न्यूयॉर्क",
"वर्जीनिया"
] | 1 |
closed choice
|
grade4
|
social science
|
us-history
|
English colonies in North America
|
Identify the Thirteen Colonies
|
The colony is Rhode Island.
|
||
संदर्भ: स्तनधारियों के बाल या फर होते हैं और वे अपने बच्चों को दूध पिलाते हैं। समुद्री ऊदबिलाव स्तनधारी का एक उदाहरण है।
नीचे स्तनधारी का चयन करें।
|
[
"ग्रे वुल्फ",
"कील-बिल्ड टूकेन"
] | 0 |
closed choice
|
grade3
|
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 keel-billed toucan is a bird. It has feathers, two wings, and a beak.
Toucans have large beaks. A toucan's beak can be half as long as its body.
A gray wolf is a mammal. It has fur and feeds its young milk.
Wolves often live in family groups. A wolf mother, father, and their children travel together.
|
|
दिखाई गई कॉलोनी का नाम क्या है?
|
[
"न्यू जर्सी",
"न्यूयॉर्क",
"मैरीलैंड",
"डेलावेयर"
] | 1 |
closed choice
|
grade8
|
social science
|
us-history
|
Colonial America
|
Identify the Thirteen Colonies
|
The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony.
|
||
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: दो चुम्बक दिखाए अनुसार रखे गए हैं।
क्या ये चुम्बक एक दूसरे को आकर्षित करेंगे या प्रतिकर्षित करेंगे?
|
[
"आकर्षित",
"प्रतिकर्षित"
] | 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 north pole of the other magnet. Like poles repel. So, these magnets will repel each other.
|
|
संदर्भ: यह बड़े बीज और मेवे खाता है। इसकी चोंच का आकार बड़े, कठोर मेवे तोड़ने के लिए अनुकूलित है।
चित्र: एलेक्जेंडरिन तोता।
किस पक्षी की चोंच बड़े, कठोर मेवे तोड़ने के लिए भी अनुकूलित है?
|
[
"गंजा आइबिस",
"स्कार्लेट मैकॉ"
] | 1 |
closed choice
|
grade3
|
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 a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. A short, thick beak might help a bird break through a seed's hard shell. Birds that eat similar food often have similar beaks.
|
Look at the picture of the Alexandrine parakeet.
The Alexandrine parakeet has a thick hooked beak. Its beak is adapted to crack large, hard nuts. The Alexandrine parakeet uses its thick beak to crack the shell of a nut by squeezing it. The hooked shape of the beak can help the bird hold the nut in place while cracking it.
Now look at each bird. Figure out which bird has a similar adaptation.
The scarlet macaw has a thick hooked beak. Its beak is adapted to crack large, hard nuts.
The bald ibis has a long curved beak. Its beak is not adapted to crack large, hard nuts.
|
|
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 अवतरण वर्णन करता है कि किसी समस्या के समाधान का परीक्षण करने के लिए इंजीनियरिंग-डिज़ाइन प्रक्रिया का उपयोग कैसे किया गया। अवतरण पढ़ें। फिर नीचे दिए गए प्रश्न का उत्तर दें।
हेलेन गोदाम की अलमारियों से सामान उठाने के लिए ड्रोन नामक छोटे विमान डिजाइन कर रही थी। वह जानती थी कि गोदाम से उड़ते समय अगर ड्रोन किसी चीज से टकराते हैं तो उनके प्रोपेलर ब्लेड क्षतिग्रस्त हो जाएंगे। इसलिए हेलेन प्रोपेलर ब्लेड की सुरक्षा के लिए ब्लेड गार्ड जोड़ना चाहती थी। गार्ड को मजबूत होना था ताकि वे दुर्घटना में टूट न जाएं। लेकिन उसने सोचा कि यदि गार्ड का वजन बहुत अधिक होगा, तो ड्रोन अच्छी तरह से नहीं उड़ पाएगा।
इसलिए हेलेन ने एक ड्रोन पर हल्की धातु से बने गार्ड लगाए
|
[
"यदि ब्लेड गार्ड जोड़ने से ड्रोन खराब तरीके से उड़ता है",
"यदि ब्लेड गार्ड दुर्घटना में टूट जाता है",
"ब्लेड गार्ड के साथ ड्रोन का वजन कितना होता है"
] | 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.
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.