c0ntrolZ/eval-arc-easy · Datasets at Hugging Face

source stringclasses 1 value	question stringlengths 18 758	choices sequencelengths 3 5	answer stringclasses 5 values
ARC-Easy	A force of 5 N is required to increase the speed of a box from a rate of 1.0 m/s to 3.0 m/s within 5 s along a level surface. What change would most likely require additional force to produce the same results?	[ "reduce the mass of the box", "increase the mass of the box", "make the surfaces of the box smooth", "make the surface of the floor smooth" ]	B
ARC-Easy	A hiker wants to know if air is warmer in a forest than in the nearby farm field. Which activity would best help the hiker find out which area is warmer?	[ "reading a book about farm fields", "making a weather prediction for the forests", "measuring the wind speed at both locations", "recording the temperatures at both locations" ]	D
ARC-Easy	Visible light in the electromagnetic spectrum	[ "is a broad band within the spectrum.", "is a narrow band within the spectrum.", "makes up 50 percent of the spectrum.", "makes up more than 75 percent of the spectrum." ]	B
ARC-Easy	A group of fish was released into a local lake. This species of fish had never lived in the lake before. Scientists want to collect data on how the lake's ecosystem is affected by the new fish. Which method of data collection will give the most accurate results?	[ "Measuring oxygen levels in the lake for two months", "Checking the lake water for nutrient levels on one day", "Sampling fish populations in the lake over several years", "Observing the surface of the lake for signs of the new fish after one week" ]	C
ARC-Easy	What would happen if a magnet was placed in the center of a plastic bowl containing a mixture of iron filings and sand?	[ "The sand will be repelled by the magnet.", "The iron filings will be attracted to the magnet.", "The sand will be attracted to the magnet.", "The iron filings will be repelled by the magnet." ]	B
ARC-Easy	What remains in the same location in the sky of the Northern Hemisphere each night?	[ "the Sun", "the Little Dipper", "the North Star", "the Moon" ]	C
ARC-Easy	What is a characteristic of sedimentary rock?	[ "high hardness", "glassy texture", "contains fossils", "shiny silver luster" ]	C
ARC-Easy	Which of the following are formed when two crustal plates collide with one another?	[ "hot spots", "rift valleys", "mountain ranges", "mid-ocean ridges" ]	C
ARC-Easy	Sodium (Na) and chlorine (Cl) are two reactive and dangerous elements. Chlorine is a halogen gas that can cause respiratory damage and sodium is an alkali metal that reacts violently with water. What happens to the properties of sodium and chlorine when they react to form sodium chloride (NaCl), common table salt?	[ "The properties of both sodium and chlorine change.", "The properties of both sodium and chlorine remain the same.", "The properties of sodium are different but chlorine remains a dangerous gas.", "The properties of sodium remain the same but the properties of chlorine change." ]	A
ARC-Easy	While hiking through Granville State Forest, a student finds an unusual plant-like organism that appears to lack chlorophyll. When the student examines a sample using a microscope, he sees many cells with cell walls and no chloroplasts. This organism is most likely a member of what Kingdom?	[ "Animalia", "Eubacteria", "Fungi", "Protista" ]	C
ARC-Easy	A class wanted to see which paper airplane design could fly the farthest. In order to have the most accurate results, every student should	[ "use the same size of paper.", "buy the same color of paper.", "fold the paper the same way.", "decorate the paper the same way." ]	A
ARC-Easy	As the amount of carbon dioxide in the atmosphere increases, which occurrence is most likely a long-term result?	[ "The polar ice caps will melt.", "Volcanoes will erupt more often.", "The number of earthquakes will decrease.", "Rainforests will be unable to support animal life." ]	A
ARC-Easy	Oxygen-rich blood returns from the lungs to the heart. Which two systems are most directly involved in this process?	[ "excretory and digestive", "circulatory and excretory", "digestive and respiratory", "respiratory and circulatory" ]	D
ARC-Easy	Which characteristic helps some animals defend themselves against predators?	[ "strong odor", "poor hearing", "weak eyesight", "shivering" ]	A
ARC-Easy	Which is a statement of fact?	[ "The Sun is very pretty.", "The Sun is fun to study.", "The Sun is larger than Earth.", "The Sun is more interesting than the Moon." ]	C
ARC-Easy	Which energy transformation occurs when a person hits a drum with a drumstick?	[ "electrical to light", "sound to electrical", "light to mechanical", "mechanical to sound" ]	D
ARC-Easy	Which tool will best help scientists understand relationships between oceans and climate changes?	[ "a computer model", "a weather balloon", "a rain gauge", "radar" ]	A
ARC-Easy	Stars form from nebulae of dust and gases. Depending on its properties, a star may become a red, yellow, white, or blue star. Which property determines this star type?	[ "age", "location", "mass", "shape" ]	C
ARC-Easy	Which cellular structure in an animal cell helps maintain homeostasis by controlling the transportation of substances into and out of the cell?	[ "vacuole", "cell wall", "mitochondrion", "cell membrane" ]	D
ARC-Easy	Ice cubes are an example of which form of water?	[ "Gas", "Liquid", "Solid", "Natural" ]	C
ARC-Easy	A student organizes a list of the distances that five students ran in 10 minutes. Another way to best organize this data is by using a	[ "pie graph.", "bar graph.", "line graph.", "pictograph." ]	B
ARC-Easy	Which of the following contains salt water?	[ "oceans", "raindrops", "groundwater", "polar icecaps" ]	A
ARC-Easy	Sandstone and all other types of sedimentary rock are made up of particles. The source materials of these particles consist of	[ "fragments that broke off of older rocks.", "magma that cooled deep below a volcano.", "gases that condensed in the atmosphere.", "vegetation that decayed in thick layers." ]	A
ARC-Easy	Ann makes hats for people. She has each person select the fabric and a hat style before she makes the hat to fit the person's head size. Which type of manufacturing system is Ann most likely using to make hats?	[ "mass production", "custom production", "automated production", "assembly line production" ]	B
ARC-Easy	A flat piece of paper has a mass of 5 grams. When the paper is crumpled into a ball, the mass of the crumpled paper is	[ "much more than that of the flat paper.", "slightly more than that of the flat paper.", "the same as that of the flat paper.", "slightly less than that of the flat paper." ]	C
ARC-Easy	A group of workers needs to move a piano from the second floor of a building. The piano is too wide to fit through the door, so they will lower the piano to the ground through a window. Which tool would be best to help the workers lower the piano from the window?	[ "wheel and axle", "inclined plane", "pulley", "wedge" ]	C
ARC-Easy	What causes sound?	[ "sunlight", "vibrations", "x-rays", "pitch" ]	B
ARC-Easy	In 1989, the unusually low snowpack in portions of the Sierra Nevada Mountains led to a widespread emergence of Edith's checkerspot butterflies in April. In these regions, flowers do not appear until May. What was the most likely result of the early emergence of these butterflies?	[ "Most butterflies did not survive.", "Most butterflies reproduced earlier.", "Most butterflies switched to other food sources.", "Most butterflies adapted to the new environment." ]	A
ARC-Easy	Kendra's mom is purchasing a car, but cannot decide what color to get. Kendra advises her mom that a car with a black exterior will be uncomfortable in the summer. This observation is correct because dark objects, as compared to lighter colored objects,	[ "reduce heat transfer.", "are generally more dense.", "absorb more of the Sun's energy.", "reflect sunlight more efficiently." ]	C
ARC-Easy	A student drops a white tablet into a glass of water, producing carbon dioxide gas. This is a demonstration of	[ "a change of state.", "a chemical reaction.", "the creation of matter.", "the movement of electricity." ]	B
ARC-Easy	The parts of plants that make seeds are the	[ "roots.", "stems.", "flowers.", "leaves." ]	C
ARC-Easy	The electrical charge of the nucleus of an atom is +12. How many electrons does the atom have in its neutral state?	[ "6", "12", "18", "24" ]	B
ARC-Easy	Respiration is a process during which energy is released from glucose. This energy is used for processes such as growth of the body. Which type of energy does respiration release?	[ "chemical", "kinetic", "potential", "thermal" ]	A
ARC-Easy	Which is the best evidence for the theory of continental drift?	[ "the appearance of volcanoes at the boundaries where plates collide", "earthquakes at boundaries where one plate slides past another", "cases where a species exists in only one isolated place", "fossils of the same species found on widely separated continents" ]	D
ARC-Easy	A scientist trying to identify an unknown liquid may heat the liquid. Which would be the best reason for the scientist to heat the liquid?	[ "to observe a color change", "to get rid of most impurities", "to identify the boiling point", "to collect gases for additional study" ]	C
ARC-Easy	A cyclist travels 3 km north in 25 minutes. What does this information describe?	[ "mass", "force", "motion", "gravity" ]	C
ARC-Easy	Which is a primary energy source used by power plants to generate electricity?	[ "coal", "wood", "gasoline", "batteries" ]	A
ARC-Easy	A metal pan will heat up quickly when placed over a gas or electric burner. The metal pan is a good	[ "resistor.", "insulator.", "conductor.", "accelerator." ]	C
ARC-Easy	Which form of energy is produced when a guitar string vibrates?	[ "chemical", "light", "magnetic", "sound" ]	D
ARC-Easy	Structures in the universe are grouped into large systems, each of which are made up of smaller systems. Which of the following is the largest system of which Earth is only a very small part?	[ "Jovian planets", "Halley's comet", "Milky Way galaxy", "Orion's belt" ]	C
ARC-Easy	How does the presence of organic matter contribute to good soil?	[ "It adds nutrients to the soil.", "It helps the soil to dry out.", "It keeps the soil cool.", "It destroys bacteria in the soil." ]	A
ARC-Easy	Scientists found evidence of a fish that lived millions of years ago. The fish had features that were possibly used to move on land. This fish is now extinct. What scientific evidence did the scientists most likely find that confirmed the existence of this fish?	[ "a fossil", "a description", "a photograph", "a cave drawing" ]	A
ARC-Easy	Which energy source might involve burning wood or producing gasohol?	[ "biomass", "wind turbine", "nuclear fission", "hydroelectric power" ]	A
ARC-Easy	Which of these warms most of the air, water, and land on Earth?	[ "Coal", "Electricity", "Sunlight", "Wind" ]	C
ARC-Easy	When buying a sunscreen, which is the best question to keep in mind while reading the label for maximum effectiveness?	[ "What is the cost per ounce?", "Who is the manufacturer?", "Is the product waterproof?", "How much protection does it provide?" ]	D
ARC-Easy	Water at 20 degrees Celsius is placed on a stove. As the water is heated, thermal energy is absorbed by the water. If the water is heated to a maximum temperature of 80 degrees Celsius, what happens as a result of the increased temperature?	[ "The potential energy increases.", "The evaporation decreases.", "The disorder decreases.", "The entropy increases." ]	D
ARC-Easy	At which location does the movement of tectonic plates form isolated volcanic islands, such as Hawaii?	[ "transform boundary", "divergent boundary", "subduction zone", "hot spot" ]	D
ARC-Easy	Which is the most likely way a scientist collects data during an experiment?	[ "calculator", "graphs", "observations", "computer" ]	C
ARC-Easy	Photosynthesis and respiration are both parts of which cycle?	[ "carbon cycle", "nitrogen cycle", "phosphorous cycle", "rock cycle" ]	A
ARC-Easy	What two organ systems are involved in the transfer of oxygen to the cells from outside the body?	[ "skeletal and digestive", "skeletal and respiratory", "circulatory and digestive", "circulatory and respiratory" ]	D
ARC-Easy	Which of the following statements is true about organisms that are producers?	[ "They use energy from the sun to make food.", "They absorb energy from a host animal.", "They get energy from eating living animals.", "They get energy by breaking down dead plants and animals." ]	A
ARC-Easy	What physical property is characteristic of all of the elements in the group located in the rightmost column of the periodic table?	[ "very high melting point", "gas state at room temperature", "good conductor of electric current", "extremely brittle solid at room temperature" ]	B
ARC-Easy	The human immunodeficiency virus (HIV) causes AIDS. The first known human cases AIDS were in Africa in the late 1950s. Since then, tens of millions of people have died from the disease, and tens of millions more people all over the world are infected. Which term best describes the disease AIDS?	[ "isolated cases", "outbreak", "epidemic", "pandemic" ]	D
ARC-Easy	Which is a function of the cardiovascular system?	[ "to move water throughout the body", "to provide structural support for the body", "to eliminate waste from the body", "to transport gases throughout the body" ]	D
ARC-Easy	Why do some animals hibernate in the winter?	[ "to find food for their young", "to adapt to environmental changes", "to attract a mate", "to avoid predators" ]	B
ARC-Easy	Which organ system communicates with cells in muscle tissue so that the muscles contract or relax, allowing the body to move?	[ "circulatory system", "nervous system", "respiratory system", "excretory system" ]	B
ARC-Easy	Which is not a significant reason why people are living longer today than 100 years ago?	[ "development of sugar substitutes", "development of medicines", "better health care", "better nutrition" ]	A
ARC-Easy	Which concept was most likely modified due to the invention of the microscope?	[ "size of subatomic particles", "composition of living things", "number of the moons of Jupiter", "formation of sedimentary rocks" ]	B
ARC-Easy	At certain times of the year, meteor showers can be observed from Earth. Why are these objects from space usually harmless?	[ "They are always microscopic.", "They are closer to the sun than to Earth.", "They are made of soft, spongy materials.", "They burn up high in Earth's atmosphere" ]	D
ARC-Easy	A girl found the skull of an animal. She did not know what the animal was but she was sure that it preyed on other animals for its food. What clue led to this conclusion?	[ "The eye sockets faced sideways.", "The skull was much longer than it was wide.", "There was a projecting ridge along the top of the skull.", "Four of the teeth were long and pointed.", "The jaws could move sideways as well as up and down." ]	D
ARC-Easy	At which location are oceans the deepest?	[ "Mid-ocean ridge", "Abyssal plain", "Ocean trench", "Volcanic island" ]	C
ARC-Easy	Steel is used for cables in suspension bridges because of its capacity for	[ "tension.", "torsion.", "compression.", "contraction." ]	A
ARC-Easy	Which of the following natural disasters is likely to cause the most widespread damage in a coastal ecosystem?	[ "a landslide", "a tornado", "a tsunami", "an earthquake" ]	C
ARC-Easy	The manufacturing process used to permanently put parts together is called	[ "cutting.", "shaping.", "finishing.", "assembling." ]	D
ARC-Easy	What is the smallest particle of an element that still exhibits all the properties of that element?	[ "an electron", "an atom", "a molecule", "a proton" ]	B
ARC-Easy	Corals are small marine organisms that live in groups and make hard outer skeletons to protect their bodies. Over time, these outer skeletons can build up to make large coral reefs. Which of the following statements best describes one way the formation of a coral reef changes the ocean ecosystem?	[ "It makes the ocean water saltier.", "It removes sand from the ocean floor.", "It causes ocean waves to become stronger.", "It creates a habitat for some ocean animals." ]	D
ARC-Easy	A renewable energy source is a source that will not run out. Which is an example of the use of such a source?	[ "A coal furnace heating a house", "a windmill pumping water on a farm", "a kerosene lamp lighting a room", "a diesel truck traveling along a road" ]	B
ARC-Easy	Rosa and Ted ate granola bars before competing in a swimming competition. Less than 50% of the chemical energy in the granola bars was converted to mechanical energy during the swim competition. If all the energy in the granola bars was used, which most likely happened to the rest of the energy?	[ "It was lost as potential energy.", "It was lost as chemical energy.", "It was converted to thermal energy.", "It was converted to magnetic energy." ]	C
ARC-Easy	When coal burns, the reaction	[ "releases heat and is endothermic.", "releases heat and is exothermic.", "absorbs heat and is endothermic.", "absorbs heat and is exothermic." ]	B
ARC-Easy	What type of cell passes on mutations?	[ "skin cell", "nerve cell", "red blood cell", "egg cell" ]	D
ARC-Easy	When water changes from a liquid to a gas and then the steam condenses back to the liquid form, these types of changes are	[ "physical.", "chemical.", "electrical.", "mechanical." ]	A
ARC-Easy	Which trait most likely helps an animal survive in a very cold environment?	[ "long ears", "large eyes", "thick fur", "sharp claws" ]	C
ARC-Easy	Due to extreme pressure, the inner core of Earth is	[ "solid.", "liquid.", "gas.", "plasma." ]	A
ARC-Easy	Which layer of Earth is divided into plates?	[ "Mantle", "Crust", "Inner core", "Outer core" ]	B
ARC-Easy	Air is composed of many different substances. Which of the following components of air is a compound rather than an element?	[ "Argon, Ar", "Oxygen, O2", "Water, H2O", "Nitrogen, N2" ]	C
ARC-Easy	Which color of light is produced when all of the colors of visible light in the electromagnetic spectrum are combined?	[ "gray", "white", "black", "brown" ]	B
ARC-Easy	Where does water in a lake get most of its energy to evaporate?	[ "The sun heating the lake", "Green plants living in the lake", "Streams entering the lake", "Cold springs under the lake" ]	A
ARC-Easy	A new moon occurs about every	[ "day.", "year.", "week.", "month." ]	D
ARC-Easy	Which is needed to determine the amount of gravitational force between two objects?	[ "weight and time", "distance and mass", "volume and mass", "area and weight" ]	B
ARC-Easy	In a lab investigation, students had to identify different mineral specimens. Which property is the most reliable for identifying one mineral from another?	[ "texture", "hardness", "crystal shape", "surface color" ]	B
ARC-Easy	Which of these is the BEST sign that the fall season has begun?	[ "Plants forming new buds", "Sun shining on flowers", "Grass being wet in the morning", "Leaves changing color on trees" ]	D
ARC-Easy	Some campers are sitting around a campfire outside their tent. Which product of the fire is in the form of electromagnetic waves?	[ "light", "smoke", "sound", "water vapor" ]	A
ARC-Easy	Which of the following is a part of the process of sexual reproduction?	[ "budding", "regeneration", "pollination", "fragmentation" ]	C
ARC-Easy	The sum of protons and neutrons in the nucleus of an atom is called the	[ "valence.", "mass number.", "chemical property.", "electrical charge." ]	B
ARC-Easy	Decaying plants and animals are important to an ecosystem because they	[ "cause disease in living organisms.", "reduce soil erosion.", "recycle oxygen to the air.", "return nutrients to the soil." ]	D
ARC-Easy	The temperature in a classroom is 15°C (59°F). The teacher turns the thermostat to 20°C (68°F) and keeps the door closed. Which of the following statements best describes the change that occurs as the temperature in the room increases to 20°C?	[ "Cold air molecules collide to generate heat energy.", "Cold energy in the room transforms into heat energy.", "The room becomes warmer as heat energy is added to the room.", "The room becomes warmer as cold energy is pushed out of the room." ]	C
ARC-Easy	Gel electrophoresis is a technology which allows researchers to reliably separate and sort DNA fragments. This technology is most useful for which application?	[ "selective breeding", "medical gene repair", "genetic engineering", "cell metabolism analysis" ]	C
ARC-Easy	Robin compared the properties of some rocks. Which property did she most likely compare with a balance?	[ "density", "mass", "temperature", "volume" ]	B
ARC-Easy	The angle of a ramp is changed several times during an experiment. Which tool is needed to measure the different angles?	[ "compass", "protractor", "meter stick", "spring scale" ]	B
ARC-Easy	How can washing your hands help keep you from getting sick?	[ "It washes away germs.", "It makes your hands look nice.", "It keeps your skin from drying out.", "It makes your hands warmer." ]	A
ARC-Easy	Which of the following provides the best evidence that Earth has evolved over geologic time?	[ "coral reefs that slowly changed size", "desert sand dunes that were shaped by winds", "deposits of sediment found at the mouth of a river", "rock containing fossilized seashells found on a mountaintop" ]	D
ARC-Easy	Students measured the elevation changes in a large park near their school. Which of the following would be the best way to report their findings?	[ "line graph", "topographic map", "color-coded chart", "spreadsheet data table" ]	B
ARC-Easy	In a particular habitat, Animal X has two sources of food. One source is found in the water and the other source is found on land. If the main predator of Animal X is found only on land, what is the most likely structural adaptation that will be selected for in the population of Animal X?	[ "development of claws", "increase in leg strength", "increase in visual acuity", "development of webbed feet" ]	D
ARC-Easy	Which of these is the most important product of Virginia forests?	[ "Pecan trees", "Pine cones", "Hardwood lumber", "Maple leaves" ]	C
ARC-Easy	The cycle of night and day on Earth is a result of	[ "the Moon revolving around Earth.", "Earth revolving around the Sun.", "the Moon rotating on its axis.", "Earth rotating on its axis." ]	D
ARC-Easy	Some changes are fast. Some changes are slow. Which of these changes is most likely the slowest?	[ "fire", "flood", "landslide", "drought" ]	D
ARC-Easy	Which form of energy is required for a television set to work?	[ "electrical", "heat", "light", "solar" ]	A
ARC-Easy	Some research has shown that the burning of fossil fuels contributes to an effect called global warming, which scientists believe is changing the chemical makeup of Earth's atmosphere. Use of which invention would help lower this effect?	[ "electric car", "digital camera", "high-speed Internet", "battery-powered radio" ]	A
ARC-Easy	What instrument should be used to monitor atmospheric pressure changes as a weather system approaches?	[ "psychrometer", "thermometer", "anemometer", "barometer" ]	D
ARC-Easy	There are different kinds of muscles in the human body. Each muscle is formed from a group of cells that works together. The main function of a group of muscle cells is to	[ "make oxygen.", "release energy.", "digest nutrients.", "cause movement." ]	D

ARC-Easy

A force of 5 N is required to increase the speed of a box from a rate of 1.0 m/s to 3.0 m/s within 5 s along a level surface. What change would most likely require additional force to produce the same results?

[ "reduce the mass of the box", "increase the mass of the box", "make the surfaces of the box smooth", "make the surface of the floor smooth" ]

B

ARC-Easy

A hiker wants to know if air is warmer in a forest than in the nearby farm field. Which activity would best help the hiker find out which area is warmer?

[ "reading a book about farm fields", "making a weather prediction for the forests", "measuring the wind speed at both locations", "recording the temperatures at both locations" ]

D

ARC-Easy

Visible light in the electromagnetic spectrum

[ "is a broad band within the spectrum.", "is a narrow band within the spectrum.", "makes up 50 percent of the spectrum.", "makes up more than 75 percent of the spectrum." ]

B

ARC-Easy

A group of fish was released into a local lake. This species of fish had never lived in the lake before. Scientists want to collect data on how the lake's ecosystem is affected by the new fish. Which method of data collection will give the most accurate results?

[ "Measuring oxygen levels in the lake for two months", "Checking the lake water for nutrient levels on one day", "Sampling fish populations in the lake over several years", "Observing the surface of the lake for signs of the new fish after one week" ]

C

ARC-Easy

What would happen if a magnet was placed in the center of a plastic bowl containing a mixture of iron filings and sand?

[ "The sand will be repelled by the magnet.", "The iron filings will be attracted to the magnet.", "The sand will be attracted to the magnet.", "The iron filings will be repelled by the magnet." ]

B

ARC-Easy

What remains in the same location in the sky of the Northern Hemisphere each night?

[ "the Sun", "the Little Dipper", "the North Star", "the Moon" ]

C

ARC-Easy

What is a characteristic of sedimentary rock?

[ "high hardness", "glassy texture", "contains fossils", "shiny silver luster" ]

C

ARC-Easy

Which of the following are formed when two crustal plates collide with one another?

[ "hot spots", "rift valleys", "mountain ranges", "mid-ocean ridges" ]

C

ARC-Easy

Sodium (Na) and chlorine (Cl) are two reactive and dangerous elements. Chlorine is a halogen gas that can cause respiratory damage and sodium is an alkali metal that reacts violently with water. What happens to the properties of sodium and chlorine when they react to form sodium chloride (NaCl), common table salt?

[ "The properties of both sodium and chlorine change.", "The properties of both sodium and chlorine remain the same.", "The properties of sodium are different but chlorine remains a dangerous gas.", "The properties of sodium remain the same but the properties of chlorine change." ]

A

ARC-Easy

While hiking through Granville State Forest, a student finds an unusual plant-like organism that appears to lack chlorophyll. When the student examines a sample using a microscope, he sees many cells with cell walls and no chloroplasts. This organism is most likely a member of what Kingdom?

[ "Animalia", "Eubacteria", "Fungi", "Protista" ]

C

ARC-Easy

A class wanted to see which paper airplane design could fly the farthest. In order to have the most accurate results, every student should

[ "use the same size of paper.", "buy the same color of paper.", "fold the paper the same way.", "decorate the paper the same way." ]

A

ARC-Easy

As the amount of carbon dioxide in the atmosphere increases, which occurrence is most likely a long-term result?

[ "The polar ice caps will melt.", "Volcanoes will erupt more often.", "The number of earthquakes will decrease.", "Rainforests will be unable to support animal life." ]

A

ARC-Easy

Oxygen-rich blood returns from the lungs to the heart. Which two systems are most directly involved in this process?

[ "excretory and digestive", "circulatory and excretory", "digestive and respiratory", "respiratory and circulatory" ]

D

ARC-Easy

Which characteristic helps some animals defend themselves against predators?

[ "strong odor", "poor hearing", "weak eyesight", "shivering" ]

A

ARC-Easy

Which is a statement of fact?

[ "The Sun is very pretty.", "The Sun is fun to study.", "The Sun is larger than Earth.", "The Sun is more interesting than the Moon." ]

C

ARC-Easy

Which energy transformation occurs when a person hits a drum with a drumstick?

[ "electrical to light", "sound to electrical", "light to mechanical", "mechanical to sound" ]

D

ARC-Easy

Which tool will best help scientists understand relationships between oceans and climate changes?

[ "a computer model", "a weather balloon", "a rain gauge", "radar" ]

A

ARC-Easy

Stars form from nebulae of dust and gases. Depending on its properties, a star may become a red, yellow, white, or blue star. Which property determines this star type?

[ "age", "location", "mass", "shape" ]

C

ARC-Easy

Which cellular structure in an animal cell helps maintain homeostasis by controlling the transportation of substances into and out of the cell?

[ "vacuole", "cell wall", "mitochondrion", "cell membrane" ]

D

ARC-Easy

Ice cubes are an example of which form of water?

[ "Gas", "Liquid", "Solid", "Natural" ]

C

ARC-Easy

A student organizes a list of the distances that five students ran in 10 minutes. Another way to best organize this data is by using a

[ "pie graph.", "bar graph.", "line graph.", "pictograph." ]

B

ARC-Easy

Which of the following contains salt water?

[ "oceans", "raindrops", "groundwater", "polar icecaps" ]

A

ARC-Easy

Sandstone and all other types of sedimentary rock are made up of particles. The source materials of these particles consist of

[ "fragments that broke off of older rocks.", "magma that cooled deep below a volcano.", "gases that condensed in the atmosphere.", "vegetation that decayed in thick layers." ]

A

ARC-Easy

Ann makes hats for people. She has each person select the fabric and a hat style before she makes the hat to fit the person's head size. Which type of manufacturing system is Ann most likely using to make hats?

[ "mass production", "custom production", "automated production", "assembly line production" ]

B

ARC-Easy

A flat piece of paper has a mass of 5 grams. When the paper is crumpled into a ball, the mass of the crumpled paper is

[ "much more than that of the flat paper.", "slightly more than that of the flat paper.", "the same as that of the flat paper.", "slightly less than that of the flat paper." ]

C

ARC-Easy

A group of workers needs to move a piano from the second floor of a building. The piano is too wide to fit through the door, so they will lower the piano to the ground through a window. Which tool would be best to help the workers lower the piano from the window?

[ "wheel and axle", "inclined plane", "pulley", "wedge" ]

C

ARC-Easy

What causes sound?

[ "sunlight", "vibrations", "x-rays", "pitch" ]

B

ARC-Easy

In 1989, the unusually low snowpack in portions of the Sierra Nevada Mountains led to a widespread emergence of Edith's checkerspot butterflies in April. In these regions, flowers do not appear until May. What was the most likely result of the early emergence of these butterflies?

[ "Most butterflies did not survive.", "Most butterflies reproduced earlier.", "Most butterflies switched to other food sources.", "Most butterflies adapted to the new environment." ]

A

ARC-Easy

Kendra's mom is purchasing a car, but cannot decide what color to get. Kendra advises her mom that a car with a black exterior will be uncomfortable in the summer. This observation is correct because dark objects, as compared to lighter colored objects,

[ "reduce heat transfer.", "are generally more dense.", "absorb more of the Sun's energy.", "reflect sunlight more efficiently." ]

C

ARC-Easy

A student drops a white tablet into a glass of water, producing carbon dioxide gas. This is a demonstration of

[ "a change of state.", "a chemical reaction.", "the creation of matter.", "the movement of electricity." ]

B

ARC-Easy

The parts of plants that make seeds are the

[ "roots.", "stems.", "flowers.", "leaves." ]

C

ARC-Easy

The electrical charge of the nucleus of an atom is +12. How many electrons does the atom have in its neutral state?

[ "6", "12", "18", "24" ]

B

ARC-Easy

Respiration is a process during which energy is released from glucose. This energy is used for processes such as growth of the body. Which type of energy does respiration release?

[ "chemical", "kinetic", "potential", "thermal" ]

A

ARC-Easy

Which is the best evidence for the theory of continental drift?

[ "the appearance of volcanoes at the boundaries where plates collide", "earthquakes at boundaries where one plate slides past another", "cases where a species exists in only one isolated place", "fossils of the same species found on widely separated continents" ]

D

ARC-Easy

A scientist trying to identify an unknown liquid may heat the liquid. Which would be the best reason for the scientist to heat the liquid?

[ "to observe a color change", "to get rid of most impurities", "to identify the boiling point", "to collect gases for additional study" ]

C

ARC-Easy

A cyclist travels 3 km north in 25 minutes. What does this information describe?

[ "mass", "force", "motion", "gravity" ]

C

ARC-Easy

Which is a primary energy source used by power plants to generate electricity?

[ "coal", "wood", "gasoline", "batteries" ]

A

ARC-Easy

A metal pan will heat up quickly when placed over a gas or electric burner. The metal pan is a good

[ "resistor.", "insulator.", "conductor.", "accelerator." ]

C

ARC-Easy

Which form of energy is produced when a guitar string vibrates?

[ "chemical", "light", "magnetic", "sound" ]

D

ARC-Easy

Structures in the universe are grouped into large systems, each of which are made up of smaller systems. Which of the following is the largest system of which Earth is only a very small part?

[ "Jovian planets", "Halley's comet", "Milky Way galaxy", "Orion's belt" ]

C

ARC-Easy

How does the presence of organic matter contribute to good soil?

[ "It adds nutrients to the soil.", "It helps the soil to dry out.", "It keeps the soil cool.", "It destroys bacteria in the soil." ]

A

ARC-Easy

Scientists found evidence of a fish that lived millions of years ago. The fish had features that were possibly used to move on land. This fish is now extinct. What scientific evidence did the scientists most likely find that confirmed the existence of this fish?

[ "a fossil", "a description", "a photograph", "a cave drawing" ]

A

ARC-Easy

Which energy source might involve burning wood or producing gasohol?

[ "biomass", "wind turbine", "nuclear fission", "hydroelectric power" ]

A

ARC-Easy

Which of these warms most of the air, water, and land on Earth?

[ "Coal", "Electricity", "Sunlight", "Wind" ]

C

ARC-Easy

When buying a sunscreen, which is the best question to keep in mind while reading the label for maximum effectiveness?

[ "What is the cost per ounce?", "Who is the manufacturer?", "Is the product waterproof?", "How much protection does it provide?" ]

D

ARC-Easy

Water at 20 degrees Celsius is placed on a stove. As the water is heated, thermal energy is absorbed by the water. If the water is heated to a maximum temperature of 80 degrees Celsius, what happens as a result of the increased temperature?

[ "The potential energy increases.", "The evaporation decreases.", "The disorder decreases.", "The entropy increases." ]

D

ARC-Easy

At which location does the movement of tectonic plates form isolated volcanic islands, such as Hawaii?

[ "transform boundary", "divergent boundary", "subduction zone", "hot spot" ]

D

ARC-Easy

Which is the most likely way a scientist collects data during an experiment?

[ "calculator", "graphs", "observations", "computer" ]

C

ARC-Easy

Photosynthesis and respiration are both parts of which cycle?

[ "carbon cycle", "nitrogen cycle", "phosphorous cycle", "rock cycle" ]

A

ARC-Easy

What two organ systems are involved in the transfer of oxygen to the cells from outside the body?

[ "skeletal and digestive", "skeletal and respiratory", "circulatory and digestive", "circulatory and respiratory" ]

D

ARC-Easy

Which of the following statements is true about organisms that are producers?

[ "They use energy from the sun to make food.", "They absorb energy from a host animal.", "They get energy from eating living animals.", "They get energy by breaking down dead plants and animals." ]

A

ARC-Easy

What physical property is characteristic of all of the elements in the group located in the rightmost column of the periodic table?

[ "very high melting point", "gas state at room temperature", "good conductor of electric current", "extremely brittle solid at room temperature" ]

B

ARC-Easy

The human immunodeficiency virus (HIV) causes AIDS. The first known human cases AIDS were in Africa in the late 1950s. Since then, tens of millions of people have died from the disease, and tens of millions more people all over the world are infected. Which term best describes the disease AIDS?

[ "isolated cases", "outbreak", "epidemic", "pandemic" ]

D

ARC-Easy

Which is a function of the cardiovascular system?

[ "to move water throughout the body", "to provide structural support for the body", "to eliminate waste from the body", "to transport gases throughout the body" ]

D

ARC-Easy

Why do some animals hibernate in the winter?

[ "to find food for their young", "to adapt to environmental changes", "to attract a mate", "to avoid predators" ]

B

ARC-Easy

Which organ system communicates with cells in muscle tissue so that the muscles contract or relax, allowing the body to move?

[ "circulatory system", "nervous system", "respiratory system", "excretory system" ]

B

ARC-Easy

Which is not a significant reason why people are living longer today than 100 years ago?

[ "development of sugar substitutes", "development of medicines", "better health care", "better nutrition" ]

A

ARC-Easy

Which concept was most likely modified due to the invention of the microscope?

[ "size of subatomic particles", "composition of living things", "number of the moons of Jupiter", "formation of sedimentary rocks" ]

B

ARC-Easy

At certain times of the year, meteor showers can be observed from Earth. Why are these objects from space usually harmless?

[ "They are always microscopic.", "They are closer to the sun than to Earth.", "They are made of soft, spongy materials.", "They burn up high in Earth's atmosphere" ]

D

ARC-Easy

A girl found the skull of an animal. She did not know what the animal was but she was sure that it preyed on other animals for its food. What clue led to this conclusion?

[ "The eye sockets faced sideways.", "The skull was much longer than it was wide.", "There was a projecting ridge along the top of the skull.", "Four of the teeth were long and pointed.", "The jaws could move sideways as well as up and down." ]

D

ARC-Easy

At which location are oceans the deepest?

[ "Mid-ocean ridge", "Abyssal plain", "Ocean trench", "Volcanic island" ]

C

ARC-Easy

Steel is used for cables in suspension bridges because of its capacity for

[ "tension.", "torsion.", "compression.", "contraction." ]

A

ARC-Easy

Which of the following natural disasters is likely to cause the most widespread damage in a coastal ecosystem?

[ "a landslide", "a tornado", "a tsunami", "an earthquake" ]

C

ARC-Easy

The manufacturing process used to permanently put parts together is called

[ "cutting.", "shaping.", "finishing.", "assembling." ]

D

ARC-Easy

What is the smallest particle of an element that still exhibits all the properties of that element?

[ "an electron", "an atom", "a molecule", "a proton" ]

B

ARC-Easy

Corals are small marine organisms that live in groups and make hard outer skeletons to protect their bodies. Over time, these outer skeletons can build up to make large coral reefs. Which of the following statements best describes one way the formation of a coral reef changes the ocean ecosystem?

[ "It makes the ocean water saltier.", "It removes sand from the ocean floor.", "It causes ocean waves to become stronger.", "It creates a habitat for some ocean animals." ]

D

ARC-Easy

A renewable energy source is a source that will not run out. Which is an example of the use of such a source?

[ "A coal furnace heating a house", "a windmill pumping water on a farm", "a kerosene lamp lighting a room", "a diesel truck traveling along a road" ]

B

ARC-Easy

Rosa and Ted ate granola bars before competing in a swimming competition. Less than 50% of the chemical energy in the granola bars was converted to mechanical energy during the swim competition. If all the energy in the granola bars was used, which most likely happened to the rest of the energy?

[ "It was lost as potential energy.", "It was lost as chemical energy.", "It was converted to thermal energy.", "It was converted to magnetic energy." ]

C

ARC-Easy

When coal burns, the reaction

[ "releases heat and is endothermic.", "releases heat and is exothermic.", "absorbs heat and is endothermic.", "absorbs heat and is exothermic." ]

B

ARC-Easy

What type of cell passes on mutations?

[ "skin cell", "nerve cell", "red blood cell", "egg cell" ]

D

ARC-Easy

When water changes from a liquid to a gas and then the steam condenses back to the liquid form, these types of changes are

[ "physical.", "chemical.", "electrical.", "mechanical." ]

A

ARC-Easy

Which trait most likely helps an animal survive in a very cold environment?

[ "long ears", "large eyes", "thick fur", "sharp claws" ]

C

ARC-Easy

Due to extreme pressure, the inner core of Earth is

[ "solid.", "liquid.", "gas.", "plasma." ]

A

ARC-Easy

Which layer of Earth is divided into plates?

[ "Mantle", "Crust", "Inner core", "Outer core" ]

B

ARC-Easy

Air is composed of many different substances. Which of the following components of air is a compound rather than an element?

[ "Argon, Ar", "Oxygen, O2", "Water, H2O", "Nitrogen, N2" ]

C

ARC-Easy

Which color of light is produced when all of the colors of visible light in the electromagnetic spectrum are combined?

[ "gray", "white", "black", "brown" ]

B

ARC-Easy

Where does water in a lake get most of its energy to evaporate?

[ "The sun heating the lake", "Green plants living in the lake", "Streams entering the lake", "Cold springs under the lake" ]

A

ARC-Easy

A new moon occurs about every

[ "day.", "year.", "week.", "month." ]

D

ARC-Easy

Which is needed to determine the amount of gravitational force between two objects?

[ "weight and time", "distance and mass", "volume and mass", "area and weight" ]

B

ARC-Easy

In a lab investigation, students had to identify different mineral specimens. Which property is the most reliable for identifying one mineral from another?

[ "texture", "hardness", "crystal shape", "surface color" ]

B

ARC-Easy

Which of these is the BEST sign that the fall season has begun?

[ "Plants forming new buds", "Sun shining on flowers", "Grass being wet in the morning", "Leaves changing color on trees" ]

D

ARC-Easy

Some campers are sitting around a campfire outside their tent. Which product of the fire is in the form of electromagnetic waves?

[ "light", "smoke", "sound", "water vapor" ]

A

ARC-Easy

Which of the following is a part of the process of sexual reproduction?

[ "budding", "regeneration", "pollination", "fragmentation" ]

C

ARC-Easy

The sum of protons and neutrons in the nucleus of an atom is called the

[ "valence.", "mass number.", "chemical property.", "electrical charge." ]

B

ARC-Easy

Decaying plants and animals are important to an ecosystem because they

[ "cause disease in living organisms.", "reduce soil erosion.", "recycle oxygen to the air.", "return nutrients to the soil." ]

D

ARC-Easy

The temperature in a classroom is 15°C (59°F). The teacher turns the thermostat to 20°C (68°F) and keeps the door closed. Which of the following statements best describes the change that occurs as the temperature in the room increases to 20°C?

[ "Cold air molecules collide to generate heat energy.", "Cold energy in the room transforms into heat energy.", "The room becomes warmer as heat energy is added to the room.", "The room becomes warmer as cold energy is pushed out of the room." ]

C

ARC-Easy

Gel electrophoresis is a technology which allows researchers to reliably separate and sort DNA fragments. This technology is most useful for which application?

[ "selective breeding", "medical gene repair", "genetic engineering", "cell metabolism analysis" ]

C

ARC-Easy

Robin compared the properties of some rocks. Which property did she most likely compare with a balance?

[ "density", "mass", "temperature", "volume" ]

B

ARC-Easy

The angle of a ramp is changed several times during an experiment. Which tool is needed to measure the different angles?

[ "compass", "protractor", "meter stick", "spring scale" ]

B

ARC-Easy

How can washing your hands help keep you from getting sick?

[ "It washes away germs.", "It makes your hands look nice.", "It keeps your skin from drying out.", "It makes your hands warmer." ]

A

ARC-Easy

Which of the following provides the best evidence that Earth has evolved over geologic time?

[ "coral reefs that slowly changed size", "desert sand dunes that were shaped by winds", "deposits of sediment found at the mouth of a river", "rock containing fossilized seashells found on a mountaintop" ]

D

ARC-Easy

Students measured the elevation changes in a large park near their school. Which of the following would be the best way to report their findings?

[ "line graph", "topographic map", "color-coded chart", "spreadsheet data table" ]

B

ARC-Easy

In a particular habitat, Animal X has two sources of food. One source is found in the water and the other source is found on land. If the main predator of Animal X is found only on land, what is the most likely structural adaptation that will be selected for in the population of Animal X?

[ "development of claws", "increase in leg strength", "increase in visual acuity", "development of webbed feet" ]

D

ARC-Easy

Which of these is the most important product of Virginia forests?

[ "Pecan trees", "Pine cones", "Hardwood lumber", "Maple leaves" ]

C

ARC-Easy

The cycle of night and day on Earth is a result of

[ "the Moon revolving around Earth.", "Earth revolving around the Sun.", "the Moon rotating on its axis.", "Earth rotating on its axis." ]

D

ARC-Easy

Some changes are fast. Some changes are slow. Which of these changes is most likely the slowest?

[ "fire", "flood", "landslide", "drought" ]

D

ARC-Easy

Which form of energy is required for a television set to work?

[ "electrical", "heat", "light", "solar" ]

A

ARC-Easy

Some research has shown that the burning of fossil fuels contributes to an effect called global warming, which scientists believe is changing the chemical makeup of Earth's atmosphere. Use of which invention would help lower this effect?

[ "electric car", "digital camera", "high-speed Internet", "battery-powered radio" ]

A

ARC-Easy

What instrument should be used to monitor atmospheric pressure changes as a weather system approaches?

[ "psychrometer", "thermometer", "anemometer", "barometer" ]

D

ARC-Easy

There are different kinds of muscles in the human body. Each muscle is formed from a group of cells that works together. The main function of a group of muscle cells is to

[ "make oxygen.", "release energy.", "digest nutrients.", "cause movement." ]

D