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train/2200 | What is the capital of North Dakota? | [
"Bismarck",
"Saint Paul",
"Fargo",
"Hilo"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Bismarck is the capital of North Dakota. | ||
train/2201 | What is the name of the colony shown? | [
"Massachusetts",
"Georgia",
"Rhode Island",
"Maryland"
] | 0 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Massachusetts.
The Massachusetts Colony included land that would later become the state of Maine. Maine was never its own colony. | ||
train/2202 | Complete the statement.
Boron trifluoride is (). | [
"an elementary substance",
"a compound"
] | 1 | The model below represents a molecule of boron trifluoride. Boron trifluoride is used to make many types of chemicals, such as plastics. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | All substances are made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For some element... | Count the number of chemical elements represented in the model. Then, decide if boron trifluoride is an elementary substance or a compound.
In this model, each ball is labeled with B for boron or F for fluorine. So, the model shows you that boron trifluoride is made of two chemical elements bonded together.
Substances ... |
train/2203 | Which of these states is farthest north? | [
"Florida",
"Connecticut",
"Nebraska",
"Vermont"
] | 3 | closed choice | grade2 | 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... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Vermont is farthest north. | |
train/2204 | What can Brendan and Estelle trade to each get what they want? | [
"Brendan can trade his tomatoes for Estelle's carrots.",
"Estelle can trade her broccoli for Brendan's oranges.",
"Estelle can trade her almonds for Brendan's tomatoes.",
"Brendan can trade his tomatoes for Estelle's broccoli."
] | 3 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Brendan and Estelle open their lunch boxes in the school cafeteria. Neither Brendan nor Estelle got everything that they wanted. ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Brendan wants broccoli. Estelle 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. | |
train/2205 | Is the water in a waterfall a solid, a liquid, or a gas? | [
"a liquid",
"a solid",
"a gas"
] | 0 | closed choice | grade3 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | The water in a waterfall is a liquid. A liquid can change shape. But it still takes up the same amount of space.
As water flows down a waterfall, the water changes shape. | |
train/2206 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown. | 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 (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. |
train/2207 | Which bird's beak is also adapted to catch insects? | [
"European robin",
"military macaw"
] | 0 | Sand martins eat insects and other small invertebrates. The shape of the 's beak is adapted to catch insects.
Figure: sand martin. | closed choice | grade4 | 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. ... | Look at the picture of the sand martin.
A short, thin beak is light and easy to move. The sand martin uses its beak to grab fast-moving insects while flying.
Now look at each bird. Figure out which bird has a similar adaptation.
The European robin has a short, thin beak. Its beak is adapted to catch insects.
The milita... |
train/2208 | Which better describes the Great Basin Desert ecosystem? | [
"It has dry, thin soil. It also has long, cold winters.",
"It has heavy snow. It also has only a few types of trees."
] | 0 | Figure: Great Basin Desert.
The Great Basin Desert is a cold desert ecosystem in the western United States. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A cold desert is a type of ecosystem. Cold deserts have the following features: a small amount of rain or snow, dry, thin soil, and long, cold winters. So, the Great Basin Desert has dry, thin soil. It also has long, cold winters. |
train/2209 | Which of the following fossils is younger? Select the more likely answer. | [
"dinosaur footprint",
"wood"
] | 0 | This diagram shows fossils in an undisturbed sedimentary rock sequence. | closed choice | grade7 | natural science | earth-science | Fossils | Compare ages of fossils in a rock sequence | A fossil is the preserved evidence of an ancient organism. Some fossils are formed from body parts such as bones or shells. Other fossils, such as footprints or burrows, are formed from traces of an organism's activities.
Fossils are typically found in sedimentary rocks. Sedimentary rocks usually form in layers. Over t... | Look again at the fossils in the rock sequence diagram.
Compare the positions of these fossils to determine which one is younger:
The dinosaur footprint fossil is in a shallower layer in the rock sequence than the wood fossil. So, the dinosaur footprint fossil is most likely younger than the wood fossil. |
train/2210 | Which bird's beak is also adapted to tear through meat? | [
"roseate spoonbill",
"California condor"
] | 1 | Black vultures are scavengers. They find and eat the bodies of dead animals. The shape of the 's beak is adapted to tear through meat.
Figure: black vulture. | closed choice | grade4 | 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. ... | Look at the picture of the black vulture.
The black vulture has a sharp hooked beak. Its beak is adapted to tear through meat. The sharp hook can help the black vulture cut the meat into pieces it can swallow.
Now look at each bird. Figure out which bird has a similar adaptation.
The California condor has a sharp hooke... |
train/2211 | Which of the following fossils is older? Select the more likely answer. | [
"crocodile egg",
"fern"
] | 0 | This diagram shows fossils in an undisturbed sedimentary rock sequence. | closed choice | grade8 | natural science | earth-science | Fossils | Compare ages of fossils in a rock sequence | A fossil is the preserved evidence of an ancient organism. Some fossils are formed from body parts such as bones or shells. Other fossils, such as footprints or burrows, are formed from traces of an organism's activities.
Fossils are typically found in sedimentary rocks. Sedimentary rocks usually form in layers. Over t... | Look again at the fossils in the rock sequence diagram.
Compare the positions of these fossils to determine which one is older:
The crocodile egg fossil is in a deeper layer in the rock sequence than the fern fossil. So, the crocodile egg fossil is most likely older than the fern fossil. |
train/2212 | How often is the Nobel Peace Prize given out? | [
"every year",
"every other year"
] | 0 | Read the passage about Malala Yousafzai and the Nobel Peace Prize.
The Nobel Peace Prize is given to people who work to make the world a better place. Winners are picked once a year. They get a gold medal and some prize money, too.
The youngest Nobel Peace Prize winner was Malala Yousafzai. She was seventeen years old.... | closed choice | grade2 | language science | reading-comprehension | Independent reading comprehension | Read and understand informational passages | Look at the passage. It tells you how often the Nobel Peace Prize is given out.
The Nobel Peace Prize is given to people who work to make the world a better place. Winners are picked once a year. They get a gold medal and some prize money, too. | |
train/2213 | Which country is highlighted? | [
"Grenada",
"Saint Vincent and the Grenadines",
"Barbados",
"Haiti"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Vincent and the Grenadines. | ||
train/2214 | Select the organism in the same species as the spot-fin porcupinefish. | [
"Procambarus clarkii",
"Syngnathoides biaculeatus",
"Diodon hystrix"
] | 2 | This organism is a spot-fin porcupinefish. Its scientific name is Diodon hystrix. | 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... | A spot-fin porcupinefish's scientific name is Diodon hystrix.
Syngnathoides biaculeatus does not have the same scientific name as a spot-fin porcupinefish. So, Diodon hystrix and Syngnathoides biaculeatus are not in the same species.
Procambarus clarkii does not have the same scientific name as a spot-fin porcupinefish... |
train/2215 | Which country is highlighted? | [
"Vanuatu",
"Nauru",
"New Zealand",
"Kiribati"
] | 1 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Nauru. | ||
train/2216 | What is the capital of Maryland? | [
"Boston",
"Baltimore",
"Annapolis",
"Honolulu"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Annapolis is the capital of Maryland. | ||
train/2217 | Which of these cities is marked on the map? | [
"Nashville",
"Austin",
"Memphis",
"New Orleans"
] | 0 | closed choice | grade4 | social science | geography | Cities | Cities of the Southeast | The city is Nashville, Tennessee. Austin, New Orleans, and Memphis are marked with gray circles on the map below. | ||
train/2218 | What is the probability that a rainbow trout produced by this cross will be homozygous recessive for the body color gene? | [
"0/4",
"3/4",
"4/4",
"2/4",
"1/4"
] | 0 | In a group of rainbow trout, some individuals have a greenish-brown body and others have a blue body. In this group, the gene for the body color trait has two alleles. The allele for a blue body (b) is recessive to the allele for a greenish-brown body (B).
This Punnett square shows a cross between two rainbow trout. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring genotypes: homozygous or heterozygous?
How do you determine whether an organism is homozygous or heterozygous for a gene? Look at the alleles in the organism's genotype for that gene.
An organism with two identical alleles for a gene is homozygous for that gene.
If both alleles are dominant, the organism is h... | |
train/2219 | What is the name of the colony shown? | [
"New Hampshire",
"New Jersey",
"Maine",
"Pennsylvania"
] | 1 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New Jersey. | ||
train/2220 | Which material is this garbage can made of? | [
"rock",
"metal"
] | 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 garbage can.
The garbage can is made of metal.
Metal can be pressed into many different shapes. It also is a strong material. Metal objects can be dropped a lot without breaking. | |
train/2221 | Which solution has a higher concentration of yellow particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 0 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | 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 Solution A and Solution B, the yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... |
train/2222 | Which statement describes the Peary Land ecosystem? | [
"It has dry, thin soil that is rich in nutrients.",
"It has many evergreen trees.",
"It has long, cold winters and short, cold summers."
] | 2 | Figure: Peary Land.
Peary Land is a tundra ecosystem in northern Greenland. It is part of Northeast Greenland National Park. That park is one of the largest national parks in the world, covering about 375,000 square miles. | closed choice | grade8 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A tundra is a type of ecosystem. Tundras have the following features: long, cold winters and short, cold summers, soil that is frozen year-round, and mostly small plants. So, the following statement describes the Peary Land ecosystem: long, cold winters and short, cold summers, soil that is frozen year-round, and mostl... |
train/2223 | Which country is highlighted? | [
"Nauru",
"Palau",
"Kiribati",
"the Federated States of Micronesia"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Palau. | ||
train/2224 | Which property do these four objects have in common? | [
"rough",
"fuzzy",
"salty"
] | 2 | Select the best answer. | 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... | Look at each object.
For each object, decide if it has that property.
Potato chips have a salty taste. All four objects are salty.
A fuzzy object is covered in soft hair. The cracker is not fuzzy.
A rough object feels scratchy when you touch it. The potato chips and the cracker are rough, but the ocean water is not.
Th... |
train/2225 | Which continent is highlighted? | [
"North America",
"Antarctica",
"Europe",
"Asia"
] | 3 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Asia. | |
train/2226 | Which animal's skin is better adapted as a warning sign to ward off predators? | [
"golden dart frog",
"lichen katydid"
] | 0 | Opalescent nudibranchs have stinging cells in their brightly colored skin. The bright colors serve as a warning sign that the animal is toxic and dangerous. The 's skin is adapted to ward off predators.
Figure: opalescent nudibranch. | closed choice | grade4 | 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... | Look at the picture of the opalescent nudibranch.
The opalescent nudibranch has stinging cells in its brightly colored skin. Its skin is adapted to ward off predators. The bright colors serve as a warning sign that the opalescent nudibranch is toxic and dangerous.
Now look at each animal. Figure out which animal has a ... |
train/2227 | What is the capital of Delaware? | [
"Concord",
"Trenton",
"Georgetown",
"Dover"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Dover is the capital of Delaware. | ||
train/2228 | What is the capital of Connecticut? | [
"Dover",
"Providence",
"Hartford",
"New Haven"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Hartford is the capital of Connecticut. | ||
train/2229 | What is the capital of Arkansas? | [
"Raleigh",
"Fargo",
"Charleston",
"Little Rock"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Little Rock is the capital of Arkansas. | ||
train/2230 | Which solution has a higher concentration of pink particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 0 | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. | 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 Solution A and Solution B, the pink particles represent the solute. To figure out which solution has a higher concentration of pink particles, look at both the number of pink particles and the volume of the solvent in each container.
Use the concentration formula to find the number of pink particles per milliliter.
... |
train/2231 | Which solution has a higher concentration of purple particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 0 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | 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 Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... |
train/2232 | Which ocean is highlighted? | [
"the Pacific Ocean",
"the Arctic Ocean",
"the Atlantic Ocean",
"the Indian Ocean"
] | 0 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Pacific Ocean. | |
train/2233 | Which continent is highlighted? | [
"North America",
"Australia",
"Asia",
"Europe"
] | 2 | 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 Asia. | |
train/2234 | Is chert a mineral or a rock? | [
"mineral",
"rock"
] | 1 | Chert has the following properties:
not a pure substance
found in nature
made up of very fine sediment grains
no fixed crystal structure
solid
not made by living things | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | The properties of chert match the properties of a rock. So, chert is a rock. |
train/2235 | Which of the following was a dependent variable in this experiment? | [
"the temperature of the soda",
"the size of the ice pieces"
] | 0 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Arianna's brother thought that crushed ice would keep his soda cooler than whole ice cubes.
To test this idea, Arianna divided a large bottle of soda equally among six glasses. Arianna added five whole ice cub... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify independent and dependent variables | Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato... | |
train/2236 | Select the organism in the same genus as the Steller's sea eagle. | [
"Pelecanus rufescens",
"Falco novaeseelandiae",
"Haliaeetus pelagicus"
] | 2 | This organism is a Steller's sea eagle. Its scientific name is Haliaeetus pelagicus. | 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... | A Steller's sea eagle's scientific name is Haliaeetus pelagicus. The first word of its scientific name is Haliaeetus.
This organism and the Steller's sea eagle are in the same genus and the same species! Both organisms have the same scientific name, Haliaeetus pelagicus.
Falco novaeseelandiae is in the genus Falco. The... |
train/2237 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. |
train/2238 | Which of the following could Isabelle and Kayla's test show? | [
"if the concrete from each batch took the same amount of time to dry",
"if a new batch of concrete was firm enough to use"
] | 1 | 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.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/2239 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown. | 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 no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
Both poles of each magnet line up with both poles of the other magnet. The south pole of each magnet is closest to the north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. |
train/2240 | Select the organism in the same genus as the American bullfrog. | [
"Hyla cinerea",
"Lithobates palustris",
"Agalychnis callidryas"
] | 1 | This organism is an American bullfrog. Its scientific name is Lithobates catesbeianus. | 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... | An American bullfrog's scientific name is Lithobates catesbeianus. The first word of its scientific name is Lithobates.
Hyla cinerea is in the genus Hyla. The first word of its scientific name is Hyla. So, Hyla cinerea and Lithobates catesbeianus are not in the same genus.
Lithobates palustris is in the genus Lithobate... |
train/2241 | What is the capital of Arizona? | [
"Des Moines",
"Lansing",
"Phoenix",
"Tucson"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Phoenix is the capital of Arizona. | ||
train/2242 | Select the fish below. | [
"goldfish",
"woodpecker"
] | 0 | Fish live underwater. They have fins, not limbs. A catfish is an example of a fish. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A goldfish is a fish. It lives underwater. It has fins, not limbs.
A woodpecker is a bird. It has feathers, two wings, and a beak. |
train/2243 | Which country is highlighted? | [
"Barbados",
"Saint Vincent and the Grenadines",
"Grenada",
"Saint Lucia"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Vincent and the Grenadines. | ||
train/2244 | What is the capital of Massachusetts? | [
"Boston",
"Augusta",
"Cambridge",
"Plymouth"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Boston is the capital of Massachusetts. | ||
train/2245 | What is the name of the colony shown? | [
"Delaware",
"New Hampshire",
"Illinois",
"Pennsylvania"
] | 1 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New Hampshire.
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. | ||
train/2246 | What is the capital of Washington? | [
"Olympia",
"Houston",
"Helena",
"Seattle"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | ||
train/2247 | Which solution has a higher concentration of pink particles? | [
"Solution A",
"Solution B",
"neither; their concentrations are the same"
] | 1 | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. | 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 Solution A and Solution B, the pink particles represent the solute. To figure out which solution has a higher concentration of pink particles, look at both the number of pink particles and the volume of the solvent in each container.
Use the concentration formula to find the number of pink particles per milliliter.
... |
train/2248 | Select the fish below. | [
"California newt",
"goldfish",
"red salamander",
"white stork"
] | 1 | Fish live underwater. They have fins, not limbs.
Fish are cold-blooded. The body temperature of cold-blooded animals depends on their environment.
A Banggai cardinalfish is an example of a fish. | 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 goldfish is a fish. It lives underwater. It has fins, not limbs.
Goldfish are popular as pets in many countries today. They were first kept as pets by people in ancient China.
A California newt is an amphibian. It has moist skin and begins its life in water.
Some newts live in water. Other newts live on land but lay ... |
train/2249 | What is the name of the colony shown? | [
"Delaware",
"Virginia",
"Kentucky",
"Tennessee"
] | 1 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Virginia.
The Virginia Colony included land that would later become part of the state of West Virginia. West Virginia was never its own colony. | ||
train/2250 | What is the capital of Louisiana? | [
"Madison",
"Jefferson City",
"Baton Rouge",
"Jackson"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Baton Rouge is the capital of Louisiana. | ||
train/2251 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | 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,... | 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 1 than in Pair 2. So, the magnitude of the magnetic force is greater in Pair 1 than in Pair 2. |
train/2252 | Select the organism in the same genus as the plains zebra. | [
"Equus zebra",
"Cervus canadensis",
"Macropus rufus"
] | 0 | This organism is a plains zebra. Its scientific name is Equus quagga. | 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... | A plains zebra's scientific name is Equus quagga. The first word of its scientific name is Equus.
Cervus canadensis is in the genus Cervus. The first word of its scientific name is Cervus. So, Cervus canadensis and Equus quagga are not in the same genus.
Equus zebra is in the genus Equus. The first word of its scientif... |
train/2253 | Which better describes the Tibetan Plateau ecosystem? | [
"It has mostly small plants. It also has soil that is frozen year-round.",
"It has long, cold winters. It also has many evergreen trees."
] | 0 | Figure: Tibetan Plateau.
The Tibetan Plateau is a tundra ecosystem located in Tibet, western China, and northern India. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A tundra is a type of ecosystem. Tundras have the following features: long, cold winters and short, cold summers, soil that is frozen year-round, and mostly small plants. So, the Tibetan Plateau has mostly small plants. It also has soil that is frozen year-round. |
train/2254 | What is the capital of Nebraska? | [
"Lansing",
"Annapolis",
"Lincoln",
"Concord"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Lincoln is the capital of Nebraska. | ||
train/2255 | Which of these states is farthest north? | [
"Florida",
"Tennessee",
"South Carolina",
"Oregon"
] | 3 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Oregon is farthest north. | |
train/2256 | Complete the statement.
Fluorine is (). | [
"a compound",
"an elementary substance"
] | 1 | The model below represents a molecule of fluorine. luorine is found in chemicals that are used to make some types of waterproof clothes. | closed choice | grade8 | 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 ... | Use the model to determine whether fluorine is an elementary substance or a compound.
Step 1: Interpret the model.
In the ball-and-stick model shown above, both of the balls are the same color:
. The legend shows that light green represents the chemical element with the atomic symbol F. So, the model shows you that a m... |
train/2257 | Select the bird below. | [
"red crowned crane",
"mandarinfish",
"ocean sunfish",
"olive toad"
] | 0 | Birds have feathers, two wings, and a beak.
Birds are warm-blooded. Warm-blooded animals can control their body temperature.
A toco toucan is an example of a bird. | 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. | An olive toad is an amphibian. It has moist skin and begins its life in water.
Toads do not have teeth! They swallow their food whole.
A red crowned crane is a bird. It has feathers, two wings, and a beak.
Cranes wade in shallow water to look for food. Cranes eat insects, worms, and plants.
An ocean sunfish is a fish. ... |
train/2258 | What can Jackson and Tina trade to each get what they want? | [
"Jackson can trade his tomatoes for Tina's broccoli.",
"Tina can trade her almonds for Jackson's tomatoes.",
"Tina can trade her broccoli for Jackson's oranges.",
"Jackson can trade his tomatoes for Tina's carrots."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Jackson and Tina open their lunch boxes in the school cafeteria. Neither Jackson nor Tina got everything that they wanted. The ta... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Jackson wants broccoli. Tina 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. | |
train/2259 | Which ocean is highlighted? | [
"the Atlantic Ocean",
"the Pacific Ocean",
"the Arctic Ocean",
"the Southern Ocean"
] | 1 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Pacific Ocean. | |
train/2260 | What is the probability that a dachshund dog produced by this cross will have rough fur? | [
"3/4",
"1/4",
"2/4",
"4/4",
"0/4"
] | 3 | In a group of dachshund dogs, some individuals have rough fur and others have soft fur. In this group, the gene for the fur texture trait has two alleles. The allele for soft fur (f) is recessive to the allele for rough fur (F).
This Punnett square shows a cross between two dachshund dogs. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities 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 a... | |
train/2261 | Based on the arrows, which of the following organisms is a consumer? | [
"collared lemming",
"bilberry"
] | 0 | Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade4 | natural science | biology | Ecosystems | Interpret food webs | 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 sho... | Consumers eat other organisms. So, there are arrows in a food web that point from other organisms to consumers.
The collared lemming has arrows pointing to it from the bear sedge and the lichen. So, the collared lemming is a consumer.
The bilberry does not have any arrows pointing to it. So, the bilberry is a producer,... |
train/2262 | Which property do these three objects have in common? | [
"sticky",
"flexible",
"slippery"
] | 0 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A flexible object can be folded or bent without breaking easily. The ice pop is not flexible.
A sticky object can attach or stick to other things. All three objects are sticky.
A slippery object is hard to hold onto or stand on. The caramel corn is n... |
train/2263 | Select the organism in the same species as the great gray owl. | [
"Larus occidentalis",
"Strix nebulosa",
"Sturnus vulgaris"
] | 1 | This organism is a great gray owl. Its scientific name is Strix nebulosa. | 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... | A great gray owl's scientific name is Strix nebulosa.
Sturnus vulgaris does not have the same scientific name as a great gray owl. So, Strix nebulosa and Sturnus vulgaris are not in the same species.
Larus occidentalis does not have the same scientific name as a great gray owl. So, Strix nebulosa and Larus occidentalis... |
train/2264 | Select the statement that is true about Sydney's average monthly precipitation. | [
"More precipitation falls in June than in December.",
"March is the driest month of the year.",
"Less precipitation falls in February than in November."
] | 0 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A... | To describe the average precipitation trends in Sydney, look at the graph.
Choice "Feb" is incorrect.
Choice "Mar" is incorrect.
Choice "Jun" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
Choice "Less precipitation falls in February than in November." is incorrect.
The average precipitation in Feb... |
train/2265 | Which country is highlighted? | [
"New Zealand",
"Nauru",
"the Federated States of Micronesia",
"Palau"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Palau. | ||
train/2266 | In this food chain, the slender wheatgrass is a producer. Why? | [
"It makes its own food.",
"It eats a consumer.",
"It eats another organism."
] | 0 | This diagram shows a food chain from a grassland ecosystem in Wyoming. | closed choice | grade5 | natural science | biology | Ecosystems | Identify roles in food chains | Every organism needs food to stay alive. Organisms get their food in different ways. A food chain shows how organisms in an ecosystem get their food.
The food chain begins with the producer. A producer can change matter that is not food into food. Many producers use carbon dioxide, water, and sunlight to make sugar. Ca... | In this food chain, the slender wheatgrass is a producer because it makes its own food. The slender wheatgrass uses carbon dioxide, water, and sunlight to make its own food. |
train/2267 | What is the capital of Kentucky? | [
"Hartford",
"Frankfort",
"Colorado Springs",
"Louisville"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | ||
train/2268 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | 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... | The particles in both samples have the same average speed, but each particle in sample A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sample A mus... |
train/2269 | What is the capital of South Dakota? | [
"Pierre",
"Frankfort",
"Nampa",
"Sioux Falls"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Pierre is the capital of South Dakota. | ||
train/2270 | Which country is highlighted? | [
"Saint Lucia",
"Saint Kitts and Nevis",
"Grenada",
"Saint Vincent and the Grenadines"
] | 3 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Vincent and the Grenadines. | ||
train/2271 | Which of these cities is marked on the map? | [
"Boston",
"New York City",
"Baltimore",
"Pittsburgh"
] | 2 | closed choice | grade4 | social science | geography | Cities | Cities of the Northeast | The city is Baltimore, Maryland. New York City, Boston, and Pittsburgh are marked with gray circles on the map below. | ||
train/2272 | Which of the following organisms is the secondary consumer in this food web? | [
"beaver",
"bobcat",
"persimmon tree",
"swallowtail caterpillar"
] | 1 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | 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 sho... | Secondary consumers eat primary consumers, and primary consumers eat producers. So, in a food web, secondary consumers have arrows pointing to them from primary consumers. Primary consumers have arrows pointing to them from producers.
The black racer has an arrow pointing to it from the pine vole. The pine vole is a pr... |
train/2273 | Which solution has a higher concentration of yellow particles? | [
"Solution A",
"Solution B",
"neither; their concentrations are the same"
] | 2 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | 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 Solution A and Solution B, the yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... |
train/2274 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is stronger in Pair 1.",
"The magnetic force is stronger in Pair 2.",
"The strength of the magnetic force is the same in both pairs."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | 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 c... | 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. |
train/2275 | Which of the following was an independent variable in this experiment? | [
"the number of mosquito bites",
"the type of mosquito repellent used"
] | 1 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Lamar liked to hike, but he was often bothered by mosquito bites. He read that rubbing lavender flowers on your skin can repel mosquitoes. Lamar wanted to find out if lavender flowers work better as a mosquito... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify independent and dependent variables | Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato... | |
train/2276 | Which animal's legs are also adapted for wading? | [
"African sacred ibis",
"Cape vulture"
] | 0 | Flamingos live near marshes, rivers, and oceans. They eat small crustaceans that live in shallow water. Flamingos get their food by walking through water, or wading.
The 's legs are adapted for wading. They are lightweight and keep the bird's body above the water.
Figure: flamingo. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the flamingo.
Long legs help the flamingo keep its body above the surface of the water while wading. Thin legs are easier to move through the water.
Now look at each animal. Figure out which animal has a similar adaptation.
The African sacred ibis has long, thin legs. Its legs are adapted for wad... |
train/2277 | Which of the following statements is true? | [
"A substance's chemical structure depends only on the number and types of atoms in each molecule of the substance.",
"Both the smell and the taste of methyl anthranilate contribute to its grape flavor."
] | 1 | A substance's physical and chemical properties are all determined by its chemical structure. Its chemical structure depends on the number and types of atoms in each of its molecules, as well as on how those atoms are arranged.
One property of a substance is its flavor, which is its odor and taste combined. The chemical... | closed choice | grade7 | natural science | chemistry | Chemical reactions | Explore chemical structure and properties: food flavors | ||
train/2278 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes. | 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,... | 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 2 than in Pair 1. So, the magnitud... |
train/2279 | Does Daucus carota have cells that have a nucleus? | [
"no",
"yes"
] | 1 | This organism is Daucus carota. It is a member of the plant kingdom.
Daucus carota is commonly called a carrot plant. The stem and leaves of the carrot plant are green and grow above ground. The root is often orange and grows underground. When people say they eat carrots, they usually mean the root of the carrot plant! | yes or no | grade5 | natural science | biology | Classification | Describe, classify, and compare kingdoms | Daucus carota is a plant. Plant cells have a nucleus. | |
train/2280 | Which property matches this object? | [
"soft",
"scratchy"
] | 0 | Select the better answer. | closed choice | grade2 | 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. | Look at the object.
Think about each property.
A soft object changes shape when you squeeze it. The ball of wet clay is soft.
A scratchy object is rough and itchy against your skin. The ball of wet clay is not scratchy. |
train/2281 | Identify the question that Emmet's experiment can best answer. | [
"Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?",
"Do bananas develop more brown spots when they are kept at room temperature compared to in a cold refrigerator?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Emmet divided 40 evenly among eight paper bags and sealed the bags. He poked 20 small holes in four of the bags and left the other four without holes. He kept the bags at room temperature for three days. Then, Emmet op... | closed choice | grade7 | 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 gr... | |
train/2282 | Select the bird below. | [
"cane toad",
"tokay gecko",
"Nile crocodile",
"cassowary"
] | 3 | Birds have feathers, two wings, and a beak.
Birds are warm-blooded. Warm-blooded animals can control their body temperature.
A Steller's sea eagle is an example of a bird. | 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 cassowary is a bird. It has feathers, two wings, and a beak.
Cassowaries have wings, but they cannot fly! They can run very fast.
A cane toad is an amphibian. It has moist skin and begins its life in water.
Toads do not have teeth! They swallow their food whole.
A tokay gecko is a reptile. It has scaly, waterproof sk... |
train/2283 | Based on the maps above, what is true about the Middle Colonies compared to the other colonial regions? | [
"It was was easier to grow crops in the Middle Colonies than in the Southern Colonies.",
"It was easier to grow crops in the Middle Colonies than in New England.",
"It was harder to grow crops in the Middle Colonies than in New England."
] | 1 | The two maps below give information about the colonial regions of North America. The first map shows how good the soil was for growing crops. The second map shows how many months each year the weather was good enough to grow crops. Use this information to answer the question below. | closed choice | grade4 | social science | us-history | English colonies in North America | Middle colonies: economy and society | Look at the maps.
It was easier to grow crops in the Middle Colonies than in New England. Each map shows this in a different way:
More fertile soil: Look at the map on the left. Fertile soil is good for growing crops. Most of the Middle Colonies have either somewhat fertile or most fertile soil. Most of New England is ... | |
train/2284 | Which property do these three objects have in common? | [
"bouncy",
"transparent",
"blue"
] | 0 | Select the best answer. | 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.
You can see clearly through a transparent object. None of the objects are transparent.
A bouncy object will bounce back from the floor if you drop it. All three objects are bouncy.
Blue is a color.
This color is blue. The rubber ball and the spring a... |
train/2285 | What is the capital of Maryland? | [
"Annapolis",
"Trenton",
"Harrisburg",
"Baltimore"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Annapolis is the capital of Maryland. | ||
train/2286 | Is a baseball a solid, a liquid, or a gas? | [
"a solid",
"a liquid",
"a gas"
] | 0 | closed choice | grade3 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | A baseball is a solid. A solid has a size and shape of its own.
If you hit a baseball with a bat, the baseball will still have a size and shape of its own. | |
train/2287 | What is the expected ratio of offspring that have Huntington's disease to offspring that do not have Huntington's disease? Choose the most likely ratio. | [
"2:2",
"1:3",
"0:4",
"4:0",
"3:1"
] | 3 | This passage describes the Huntington's disease trait in humans:
Huntington's disease is a condition that causes the death of brain cells over time. This loss of cells interferes with brain function and may lead to uncontrolled movements, difficulty thinking, and changes in behavior.
In a group of humans, some individu... | 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 a... | To determine how many boxes in the Punnett square represent offspring that do or do not have Huntington's disease, consider whether each phenotype is the dominant or recessive allele's version of the Huntington's disease trait. The question tells you that the H allele, which is for having Huntington's disease, is domin... |
train/2288 | Which of these states is farthest north? | [
"Nevada",
"Pennsylvania",
"Arkansas",
"Kentucky"
] | 1 | closed choice | grade2 | 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... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Pennsylvania is farthest north. | |
train/2289 | Which country is highlighted? | [
"Tonga",
"Samoa",
"Tuvalu",
"Fiji"
] | 0 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | ||
train/2290 | Which better describes the Pisgah National Forest ecosystem? | [
"It has cold, wet winters. It also has only a few types of trees.",
"It has soil that is poor in nutrients. It also has only a few types of trees."
] | 0 | Figure: Pisgah National Forest.
The Pisgah National Forest is a temperate deciduous forest ecosystem in western North Carolina. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A temperate deciduous forest is a type of ecosystem. Temperate deciduous forests have the following features: warm, wet summers and cold, wet winters, soil that is rich in nutrients, and only a few types of trees. So, the Pisgah National Forest has cold, wet winters. It also has only a few types of trees. |
train/2291 | What is the name of the colony shown? | [
"Washington, D.C.",
"Vermont",
"South Carolina",
"Maryland"
] | 3 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Maryland. | ||
train/2292 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | 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 magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... |
train/2293 | Which of the following could Devin's test show? | [
"if the weather station would work when the temperature was 50°C",
"how well the weather station would work when it was windy"
] | 0 | 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.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/2294 | What is the name of the colony shown? | [
"Tennessee",
"New Hampshire",
"Michigan",
"Maine"
] | 1 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is New Hampshire.
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. | ||
train/2295 | Which of these states is farthest west? | [
"Wisconsin",
"New York",
"South Carolina",
"South Dakota"
] | 3 | closed choice | grade2 | 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... | To find the answer, look at the compass rose. Look at which way the west arrow is pointing. South Dakota is farthest west. | |
train/2296 | What is the name of the colony shown? | [
"Connecticut",
"Tennessee",
"Massachusetts",
"Iowa"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Massachusetts.
The Massachusetts Colony included land that would later become the state of Maine. Maine was never its own colony. | ||
train/2297 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | Two magnets are placed as shown. | 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 no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/2298 | Which country is highlighted? | [
"New Zealand",
"Palau",
"Australia",
"Papua New Guinea"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is New Zealand. | ||
train/2299 | What is the capital of Illinois? | [
"Biloxi",
"Chicago",
"Frankfort",
"Springfield"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Springfield is the capital of Illinois. |
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