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train/1300 | Can Chelonoidis nigra cells make their own food? | [
"yes",
"no"
] | 1 | This organism is Chelonoidis nigra. It is a member of the animal kingdom.
Chelonoidis nigra is commonly called a Galápagos giant tortoise. These large tortoises live on the Galápagos Islands. When Spanish sailors arrived at these islands in the 1530s, about 200,000 Galápagos giant tortoises lived on the islands. The Sp... | yes or no | grade5 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Chelonoidis nigra is an animal. Animal cells cannot make their own food. Animals get their food by digesting other organisms. |
train/1301 | Why might forming strong social bonds with other females increase the reproductive success of a female baboon? Complete the claim below that answers this question and is best supported by the passage.
Forming strong social bonds with other females increases the chances that (). | [
"the female's offspring will live longer",
"the female will spend more time grooming other baboons",
"the female's offspring will be around other females"
] | 0 | Animals often behave in certain ways that can increase their reproductive success. Read the passage about a specific animal behavior. Then, follow the instructions below.
Baboons are found in many parts of Africa, where they live in groups. Female baboons in a group can form social bonds, or close relationships, with ... | closed choice | grade8 | natural science | literacy-in-science | Adaptations and natural selection | How can animal behaviors affect reproductive success? Identify evidence to support a claim | Animals increase their reproductive success when they have offspring that survive to reproduce.
Animals can increase their chances of having offspring by behaving in ways that help them get partners to mate and reproduce with. These partners are called mates. For example, animals may make special sounds, perform specif... | Look for the part of the passage that describes the effect of forming strong social bonds with other females. Use this information to determine why this behavior can increase the reproductive success of the female baboon.
Choice "Baboons are found in many parts of Africa, where they live in groups. Female baboons in a ... |
train/1302 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"neither; the samples have the same temperature",
"sample A"
] | 0 | 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 | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in sample B has more mass than each particle in sample A. The particles in sample B also have a higher average speed than the particles in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average ... |
train/1303 | 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 B",
"sample A"
] | 2 | 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 | grade8 | 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/1304 | 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 | grade3 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | 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/1305 | Which statement describes the Serengeti National Park ecosystem? | [
"It has warm summers and warm winters.",
"It has a small amount of rain."
] | 0 | Figure: Serengeti National Park.
Serengeti National Park is a savanna grassland ecosystem in Tanzania, a country in eastern Africa. Many types of animals migrate through the park each year. | closed choice | grade6 | 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 savanna grassland is a type of ecosystem. Savanna grasslands have the following features: warm summers and warm winters, a rainy season and a dry season, and soil that is poor in nutrients. So, the following statements describe the Serengeti National Park ecosystem: warm summers and warm winters, a rainy season and a... |
train/1306 | Which country is highlighted? | [
"Cuba",
"the Dominican Republic",
"Haiti",
"Dominica"
] | 1 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is the Dominican Republic.
Why does the Dominican Republic share its island with another country?
The Dominican Republic and Haiti share the island of Hispaniola. It is home to the earliest European settlements in the Americas. Christopher Columbus founded the first European settlement on the island in 149... | ||
train/1307 | Which country is highlighted? | [
"Papua New Guinea",
"the Federated States of Micronesia",
"Solomon Islands",
"New Zealand"
] | 0 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Papua New Guinea.
Why does Papua New Guinea share its island with another country?
Papua New Guinea takes up the eastern half of the island of New Guinea. The western half is part of Indonesia, an Asian country.
Beginning in the 17 th century, several countries took control of different parts of the isl... | ||
train/1308 | Which country is highlighted? | [
"New Zealand",
"the Marshall Islands",
"Papua New Guinea",
"Tuvalu"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is New Zealand. | ||
train/1309 | Which better describes the Kaeng Krachan National Park ecosystem? | [
"It has year-round rain. It also has many different types of organisms.",
"It has cold winters. It also has many different types of organisms."
] | 0 | Figure: Kaeng Krachan National Park.
Kaeng Krachan National Park is a tropical rain forest ecosystem in western Thailand. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A tropical rain forest is a type of ecosystem. Tropical rain forests have the following features: year-round rain and warm temperatures, soil that is poor in nutrients, and many different types of organisms. So, Kaeng Krachan National Park has year-round rain. It also has many different types of organisms. |
train/1310 | Is Polytrichum commune made up of many cells? | [
"no",
"yes"
] | 1 | This organism is Polytrichum commune. It is a member of the plant kingdom.
Polytrichum commune is also called the common haircap moss. This plant gets its common name from its brown, cap-like structures. Those structures contain spores. After the spores are released, they can settle on the ground and grow into new moss... | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Polytrichum commune is a plant. Plants are made up of many cells. |
train/1311 | Which statement describes the Kibale National Forest ecosystem? | [
"It has mostly small plants.",
"It has year-round rain and warm temperatures.",
"It has only a few types of organisms."
] | 1 | Figure: Kibale National Forest.
Kibale National Forest is a tropical rain forest ecosystem in Uganda, a country in eastern Africa. This rain forest is home to many African primates, including chimpanzees. | closed choice | grade5 | 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 tropical rain forest is a type of ecosystem. Tropical rain forests have the following features: year-round rain and warm temperatures, soil that is poor in nutrients, and many different types of organisms. So, the following statement describes the Kibale National Forest ecosystem: year-round rain and warm temperature... |
train/1312 | Which property do these three objects have in common? | [
"sour",
"translucent",
"yellow"
] | 1 | 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.
Yellow is a color.
This color is yellow. The icicle and the ocean water are not yellow.
A lemon has a sour taste. None of the objects are sour.
A translucent object lets light through. But you cannot see clearly through a translucent object. All thre... |
train/1313 | Which animal is also adapted to be camouflaged among green leaves? | [
"emerald tree boa",
"common hawk-cuckoo"
] | 0 | Leaf-mimic katydids are insects that live in places like tropical forests. This katydid is adapted to be camouflaged among green leaves.
Figure: leaf-mimic katydid. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the leaf-mimic katydid.
The leaf-mimic katydid has a green leaf-shaped body. It is adapted to be camouflaged among green leaves. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The emerald tree boa has bright green scales covering ... |
train/1314 | In this experiment, which were part of an experimental group? | [
"the pots with salted water",
"the pots with pure water"
] | 0 | The passage below describes an experiment.
Stefan was a chef's assistant in an Italian restaurant. One of his coworkers told him that adding salt to water would cause the spaghetti to cook faster.
Stefan gathered six pots that were the same size. He filled each pot with the same amount of pure water. He added one tabl... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify control and experimental groups | Experiments have variables, or parts that change. You can design an experiment to investigate whether changing a variable between different groups has a specific outcome.
For example, imagine you want to find out whether adding fertilizer to soil affects the height of pea plants. You could investigate this question wit... | In this experiment, Stefan investigated whether adding salt to water affects how quickly spaghetti cooks. So, the pots with salted water were part of an experimental group.
The pots with pure water did not have salt. So, they were not part of an experimental group. |
train/1315 | Which property do these three objects have in common? | [
"slippery",
"fuzzy",
"rough"
] | 2 | 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 rough object feels scratchy when you touch it. All three objects are rough.
A fuzzy object is covered in soft hair. The rock and the log are not fuzzy.
A slippery object is hard to hold onto or stand on. None of the objects are slippery.
The proper... |
train/1316 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 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 north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/1317 | Which type of force from the boy slides the items out of the trunk? | [
"push",
"pull"
] | 1 | A boy helps bring items from the store into the house. He applies a force to the items with his arms to slide the items out of the trunk. | closed choice | grade3 | natural science | physics | Force and motion | Identify pushes and pulls | A force is a push or a pull that one object applies to a second object.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The boy applies a force to the items to slide them out of the car. The direction of this force is toward the boy. This force is a pull. |
train/1318 | What is the expected ratio of offspring with a hairy body to offspring with a hairless body? Choose the most likely ratio. | [
"3:1",
"1:3",
"0:4",
"2:2",
"4:0"
] | 4 | In a group of deer mice, some individuals have a hairy body and others have a hairless body. In this group, the gene for the body hair trait has two alleles. The allele for a hairless body (b) is recessive to the allele for a hairy body (B).
This Punnett square shows a cross between two deer mice. | 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 with a hairy body or a hairless body, consider whether each phenotype is the dominant or recessive allele's version of the body hair trait. The question tells you that the b allele, which is for a hairless body, is recessive to the B allele, which is... |
train/1319 | What is the capital of Arizona? | [
"Honolulu",
"Phoenix",
"Biloxi",
"Tucson"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Phoenix is the capital of Arizona. | ||
train/1320 | What is the capital of Georgia? | [
"Athens",
"Atlanta",
"Savannah",
"Frankfort"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Atlanta is the capital of Georgia. | ||
train/1321 | 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 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 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, but some of them are different shapes. | 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 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1. |
train/1322 | Select the reptile below. | [
"coral snake",
"koala"
] | 0 | Reptiles have scaly, waterproof skin. Most reptiles live on land. A Galapagos giant tortoise is an example of a reptile. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A koala is a mammal. It has fur and feeds its young milk.
Koalas sleep for up to 20 hours a day!
A coral snake is a reptile. It has scaly, waterproof skin.
Coral snakes spend most of their time underground or hiding under leaves. |
train/1323 | What is the name of the colony shown? | [
"Massachusetts",
"Vermont",
"Georgia",
"New Hampshire"
] | 3 | closed choice | grade8 | 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/1324 | Which solution has a higher concentration of pink particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 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/1325 | Which animal's skin is better adapted as a warning sign to ward off predators? | [
"fire salamander",
"gray tree frog"
] | 0 | Strawberry poison frogs have poisonous glands in their brightly colored skin. The bright colors serve as a warning sign that the animal is poisonous. The 's skin is adapted to ward off predators.
Figure: strawberry poison frog. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the strawberry poison frog.
The strawberry poison frog has poisonous glands in its brightly colored skin. Its skin is adapted to ward off predators. The bright colors serve as a warning sign that the strawberry poison frog is poisonous.
Now look at each animal. Figure out which animal has a simil... |
train/1326 | Which of the following fossils is younger? Select the more likely answer. | [
"ginkgo leaf",
"mammal tooth"
] | 1 | 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 younger:
The mammal tooth fossil is in a shallower layer in the rock sequence than the ginkgo leaf fossil. So, the mammal tooth fossil is most likely younger than the ginkgo leaf fossil. |
train/1327 | Is chert a mineral? | [
"no",
"yes"
] | 0 | Chert has the following properties:
solid
found in nature
not a pure substance
not made by organisms
no fixed crystal structure | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Chert does not have all the properties of a mineral. So, chert is not a mineral. |
train/1328 | Which letter represents the location of Rome? | [
"E",
"D",
"A",
"C",
"B"
] | 4 | The city of Rome is located on the Italian Peninsula. A peninsula is a landform with water on three sides. Rome has existed for about 2,700 years, and at one time, it was one of the wealthiest and most powerful cities in the world. Look at the map. Then answer the question below. | closed choice | grade6 | social science | world-history | Rome and the Byzantine Empire | The beginnings of Rome | Look at the map.
Rome is located on the Italian Peninsula. Find the part of the map labeled "Italy." This boot-shaped piece of land is the Italian Peninsula, and the city shown on that peninsula is Rome! Today, Rome is the capital of the country of Italy.
The other cities on the map are not on the Italian Peninsula. Bu... | |
train/1329 | What is the capital of Pennsylvania? | [
"Philadelphia",
"Pittsburgh",
"Harrisburg",
"Albany"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Harrisburg is the capital of Pennsylvania. | ||
train/1330 | Which ocean is highlighted? | [
"the Indian Ocean",
"the Pacific Ocean",
"the Southern Ocean",
"the Atlantic Ocean"
] | 0 | 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 Indian Ocean. | |
train/1331 | What is the probability that a rainbow trout produced by this cross will have a blue body? | [
"1/4",
"4/4",
"0/4",
"2/4",
"3/4"
] | 3 | 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 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/1332 | Look at the models of molecules below. Select the elementary substance. | [
"methanol",
"chloromethanol",
"iodine"
] | 2 | closed choice | grade6 | natural science | chemistry | Atoms and molecules | Identify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | ||
train/1333 | Which animal's feet are also adapted for sticking to smooth surfaces? | [
"meerkat",
"Mediterranean tree frog"
] | 1 | s live in the rain forests of Indonesia. They spend most of their lives in trees. The feet of the are adapted to stick to the smooth surfaces of leaves.
Figure: Borneo eared frog. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur m... | Look at the picture of the Borneo eared frog.
The Borneo eared frog has wide, sticky toes. Its feet are adapted for sticking to smooth surfaces. The Borneo eared frog uses its toes to walk on the smooth surfaces of leaves without slipping.
Now look at each animal. Figure out which animal has a similar adaptation.
The M... |
train/1334 | Which of these continents does the equator intersect? | [
"Australia",
"Antarctica",
"South America"
] | 2 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The equator is the line at 0° latitude. It intersects South America. It does not intersect Antarctica or Australia. | |
train/1335 | Which of these states is farthest south? | [
"Utah",
"Rhode Island",
"Montana",
"Michigan"
] | 0 | 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 south arrow is pointing. Utah is farthest south. | |
train/1336 | Which of these continents does the prime meridian intersect? | [
"Australia",
"South America",
"Antarctica"
] | 2 | closed choice | grade5 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Antarctica. It does not intersect Australia or South America. | |
train/1337 | 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 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 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, 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,... | 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/1338 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade3 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | 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/1339 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Antarctica.
Bright clouds filled the sky above Antarctica every day last July. These clouds form high in the atmosphere and reflect light back down to Earth.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Bright clouds filled the sky above Antarctica every day last July. These clouds form high in the atmosphere and reflect light back down to Earth.
The underlined part of the passage tells you about the clouds seen in a certain month in Antarctica. This passage describes the atmosphere at a ce... |
train/1340 | What is the capital of Wyoming? | [
"Juneau",
"Laramie",
"Cheyenne",
"Jefferson City"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Cheyenne is the capital of Wyoming. | ||
train/1341 | Complete the text to describe the diagram.
Solute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium. | [
"to the right than to the left",
"to the left than to the right"
] | 0 | The diagram below shows a solution with one solute. Each solute particle is represented by a yellow ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.
The diagram shows how the solution can change over time... | closed choice | grade6 | natural science | chemistry | Solutions | Diffusion across membranes | In a solution, solute particles move and spread throughout the solvent. The diagram below shows how a solution can change over time. Solute particles move from the area where they are at a higher concentration to the area where they are at a lower concentration. This movement happens through the process of diffusion.
A... | Look at the diagram again. It shows you how the solution changed during the process of diffusion.
Before the solute particles reached equilibrium, there were 5 solute particles on the left side of the membrane and 3 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there... |
train/1342 | Which is this organism's common name? | [
"orange clownfish",
"Amphiprion percula"
] | 0 | This organism is Amphiprion percula. It is also called an orange clownfish. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Amphiprion percula is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Amphiprion percula is the organism's scientific name. So, you know that orange clownfish is the common name. |
train/1343 | What is the capital of Connecticut? | [
"Bridgeport",
"Augusta",
"Phoenix",
"Hartford"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Hartford is the capital of Connecticut. | ||
train/1344 | What is the capital of Michigan? | [
"Lansing",
"Madison",
"Detroit",
"Grand Rapids"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Lansing is the capital of Michigan. | ||
train/1345 | Is obsidian a mineral or a rock? | [
"mineral",
"rock"
] | 1 | Obsidian has the following properties:
not made by organisms
found in nature
glassy texture
not a pure substance
solid
no fixed crystal structure | 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 obsidian match the properties of a rock. So, obsidian is a rock. |
train/1346 | Which ocean is highlighted? | [
"the Atlantic Ocean",
"the Arctic Ocean",
"the Southern Ocean",
"the Indian 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 Arctic Ocean. | |
train/1347 | Which month is the coolest on average in Detroit? | [
"June and July",
"January and February",
"November and December"
] | 1 | 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. Temperature is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average temperature for each month. The average temperature can be used to describe the climate of a location.
A line graph can be used t... | To describe the average temperature trends in Detroit, look at the graph.
Choice "Feb" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
Choice "Jan" is incorrect.
The average temperatures in January and February are between 25°F and 30°F. These mo... |
train/1348 | Select the organism in the same genus as the blue jay. | [
"Cyanocitta stelleri",
"Goura scheepmakeri",
"Larus livens"
] | 0 | This organism is a blue jay. Its scientific name is Cyanocitta cristata. | 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 blue jay's scientific name is Cyanocitta cristata. The first word of its scientific name is Cyanocitta.
Goura scheepmakeri is in the genus Goura. The first word of its scientific name is Goura. So, Goura scheepmakeri and Cyanocitta cristata are not in the same genus.
Larus livens is in the genus Larus. The first word... |
train/1349 | What is the capital of Oklahoma? | [
"Oklahoma City",
"Tulsa",
"Tallahassee",
"Frankfort"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Oklahoma City is the capital of Oklahoma. | ||
train/1350 | Which material is this box made of? | [
"porcelain",
"cardboard"
] | 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 box.
The box is made of cardboard.
Cardboard is made from wood pulp. Cardboard is usually brown because wood pulp is brown. | |
train/1351 | Which of these states is farthest east? | [
"Iowa",
"Oklahoma",
"Wyoming",
"Nevada"
] | 0 | 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 east arrow is pointing. Iowa is farthest east. | |
train/1352 | Which of the following could Sanjay's test show? | [
"how well the weather station would work when it was windy",
"if the weather station would work when the temperature was 50°C"
] | 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/1353 | Which state is highlighted? | [
"Arizona",
"Washington",
"Utah",
"New Mexico"
] | 0 | closed choice | grade5 | social science | geography | States | Identify the 50 states | This state is Arizona. | ||
train/1354 | What is the capital of Rhode Island? | [
"Indianapolis",
"Newport",
"Providence",
"Charleston"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | ||
train/1355 | Is the following statement about our solar system true or false?
Three-quarters of the planets are larger than Venus. | [
"false",
"true"
] | 0 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | The table tells you that there are five planets larger than Venus: Earth, Jupiter, Saturn, Uranus, and Neptune. There are eight planets total. Five-eighths is less than three-quarters. So, five-eighths of the planets are larger than Venus. |
train/1356 | Is cake batter a solid, a liquid, or a gas? | [
"a gas",
"a solid",
"a liquid"
] | 2 | closed choice | grade4 | natural science | physics | States of matter | Identify and sort solids, liquids, and gases | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | Cake batter is a liquid. A liquid takes the shape of any container it is in.
If you pour cake batter into a different container, the cake batter will take the shape of that container. But the cake batter will still take up the same amount of space. | |
train/1357 | Which of these states is farthest north? | [
"North Carolina",
"Texas",
"Maryland",
"Alabama"
] | 2 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Maryland is farthest north. | |
train/1358 | Which of these states is farthest north? | [
"Arizona",
"Maryland",
"Florida",
"Mississippi"
] | 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. Maryland is farthest north. | |
train/1359 | Which country is highlighted? | [
"Tuvalu",
"Fiji",
"Tonga",
"Kiribati"
] | 0 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | ||
train/1360 | What can Lacey and Rose trade to each get what they want? | [
"Rose can trade her broccoli for Lacey's oranges.",
"Lacey can trade her tomatoes for Rose's carrots.",
"Lacey can trade her tomatoes for Rose's broccoli.",
"Rose can trade her almonds for Lacey's tomatoes."
] | 2 | 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.
Lacey and Rose open their lunch boxes in the school cafeteria. Neither Lacey nor Rose got everything that they wanted. The table ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Lacey wants broccoli. Rose 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/1361 | Which month is the hottest on average in Adelaide? | [
"January and February",
"September and October",
"June, July, and August"
] | 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 | To describe the average temperature trends in Adelaide, look at the graph.
Choice "Feb" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Sep" is incorrect.
Choice "Oct" is incorrect.
Choice "Jan" is incorrect.
The average temperatures in January and February are jus... | |
train/1362 | 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."
] | 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 | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other. | Distance affects the strength of the magnetic force. But the distance between the magnets in Pair 1 and in Pair 2 is the same.
So, the strength of the magnetic force is the same in both pairs. |
train/1363 | Select the organism in the same genus as the common toad. | [
"Bufo bufo",
"Hyla japonica",
"Lithobates catesbeianus"
] | 0 | This organism is a common toad. Its scientific name is Bufo bufo. | 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 common toad's scientific name is Bufo bufo. The first word of its scientific name is Bufo.
Lithobates catesbeianus is in the genus Lithobates. The first word of its scientific name is Lithobates. So, Lithobates catesbeianus and Bufo bufo are not in the same genus.
This organism and the common toad are in the same gen... |
train/1364 | Which animal is also adapted to be camouflaged in the snow? | [
"polar bear",
"Grant's gazelle"
] | 0 | Ptarmigans live in cold, snowy places. The is adapted to be camouflaged in the snow.
Figure: ptarmigan. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the ptarmigan.
During the winter, the ptarmigan has white feathers covering its body. It is adapted to be camouflaged in the snow. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The polar bear has white fur covering its body. It i... |
train/1365 | What is the capital of Hawaii? | [
"Phoenix",
"Olympia",
"Hilo",
"Honolulu"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Honolulu is the capital of Hawaii. | ||
train/1366 | Which of these states is farthest south? | [
"Texas",
"Ohio",
"Washington",
"Utah"
] | 0 | 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 south arrow is pointing. Texas is farthest south. | |
train/1367 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Algeria.
The coast of Algeria is often cloudy during the wet winter months of December, January, and February.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade4 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
The coast of Algeria is often cloudy during the wet winter months of December, January, and February.
This passage tells you about the usual pattern of cloud cover on the coast of Algeria. This passage does not describe what the weather is like on a particular day. So, this passage describes... |
train/1368 | What is the capital of Hawaii? | [
"Jefferson City",
"Hilo",
"Honolulu",
"Topeka"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Honolulu is the capital of Hawaii. | ||
train/1369 | Select the bird below. | [
"barn owl",
"helmeted iguana"
] | 0 | Birds have feathers, two wings, and a beak. A bald eagle is an example of a bird. | 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 barn owl is a bird. It has feathers, two wings, and a beak.
A helmeted iguana is a reptile. It has scaly, waterproof skin. |
train/1370 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | 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 north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/1371 | Select the organism in the same genus as the blue jay. | [
"Cyanocitta cristata",
"Ardea cocoi",
"Hystrix cristata"
] | 0 | This organism is a blue jay. Its scientific name is Cyanocitta cristata. | closed choice | grade6 | 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 blue jay's scientific name is Cyanocitta cristata. The first word of its scientific name is Cyanocitta.
Hystrix cristata and Cyanocitta cristata are not in the same genus.
These organisms are not in the same genus, but part of their scientific names is the same. Hystrix cristata and Cyanocitta cristata have the same ... |
train/1372 | What is the name of the colony shown? | [
"Massachusetts",
"New York",
"New Jersey",
"Pennsylvania"
] | 2 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New Jersey. | ||
train/1373 | Select the organism in the same species as the black howler. | [
"Alouatta caraya",
"Ovis orientalis",
"Lontra canadensis"
] | 0 | This organism is a black howler. Its scientific name is Alouatta caraya. | 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 black howler's scientific name is Alouatta caraya.
Ovis orientalis does not have the same scientific name as a black howler. So, Alouatta caraya and Ovis orientalis are not in the same species.
Lontra canadensis does not have the same scientific name as a black howler. So, Alouatta caraya and Lontra canadensis are no... |
train/1374 | Is the following statement about our solar system true or false?
The volume of Mars is more than ten times as large as Mercury's. | [
"false",
"true"
] | 0 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To determine if this statement is true, calculate the value of ten times the volume of Mercury.
Then compare the result to the volume of Mars. The volume of Mars is 1.63 x 10^11 km^3, which is less than 6.08 x 10^11 km^3. So, the volume of Mars is less than ten times as large as Mercury's. |
train/1375 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | 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 north pole of one magnet is closest to the south pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. |
train/1376 | What is the capital of Arkansas? | [
"Athens",
"Raleigh",
"Little Rock",
"Tallahassee"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Little Rock is the capital of Arkansas. | ||
train/1377 | Which continent is highlighted? | [
"Europe",
"Australia",
"South America",
"North America"
] | 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 South America. | |
train/1378 | Which country is highlighted? | [
"Grenada",
"Haiti",
"Saint Vincent and the Grenadines",
"Saint Lucia"
] | 2 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Vincent and the Grenadines. | ||
train/1379 | Which of the following could Chase's test show? | [
"if the sample fabric would absorb one drop of water in less than one second",
"how long it would take the sample fabric to dry after it absorbed one drop of water",
"how much athletes would sweat in the fabric"
] | 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 | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/1380 | What is the expected ratio of offspring with normal wings to offspring with vestigial wings? Choose the most likely ratio. | [
"3:1",
"0:4",
"2:2",
"4:0",
"1:3"
] | 1 | This passage describes the wing type trait in fruit flies:
Some scientists breed fruit flies to learn how traits are inherited. These scientists often use flies with vestigial wings, which are shorter and stubbier than normal wings. Fruit flies with vestigial wings cannot fly, so they are easier for scientists to handl... | 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 with normal wings or vestigial wings, consider whether each phenotype is the dominant or recessive allele's version of the wing type trait. The question tells you that the N allele, which is for normal wings, is dominant over the n allele, which is f... |
train/1381 | Which material are these blocks made of? | [
"rock",
"wood"
] | 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 blocks.
The toy blocks are made of wood. | |
train/1382 | What is the capital of Oregon? | [
"Salem",
"Portland",
"Providence",
"Denver"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Salem is the capital of Oregon. | ||
train/1383 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 1.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 2."
] | 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 | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2. |
train/1384 | Which animal's feet are also adapted to walk on snow and ice? | [
"Eurasian lynx",
"tokay gecko"
] | 0 | Snow leopards live in the snowy mountains of central Asia. The 's feet are adapted for walking on snow and ice.
Figure: snow leopard. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur m... | Look at the picture of the snow leopard.
The snow leopard has furry feet with large pads. Its feet are adapted to walk on snow and ice. The fur can help keep the snow leopard's feet warm. The large pads help spread its weight over a larger area. This allows it to walk on ice without slipping and to walk on snow without... |
train/1385 | Which bird's beak is also adapted to filter through mud? | [
"ringed teal",
"Alexandrine parakeet"
] | 0 | Canada geese eat invertebrates and plants that live near water. The shape of the 's beak is adapted to filter through mud for food.
The gathers muddy water in its beak and then pushes it out through gaps along the sides. Bits of food, such as plant roots, are left behind inside the goose's beak.
Figure: Canada goose. | 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 Canada goose.
The Canada goose has a wide, flat beak. Its beak is adapted to filter through mud. The Canada goose gathers muddy water in its beak. Then, it pushes the water out through gaps along the sides of the beak. Bits of food, such as plant roots, are left behind inside the goose's beak... |
train/1386 | What is the capital of Nebraska? | [
"Omaha",
"Lincoln",
"Wichita",
"Jefferson City"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Lincoln is the capital of Nebraska. | ||
train/1387 | Which is this organism's scientific name? | [
"Ardea herodias",
"great blue heron"
] | 0 | This organism is Ardea herodias. It is also called a great blue heron. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Ardea herodias is written in italics. The first word is capitalized, and the second word is not.
So, Ardea herodias is the scientific name. |
train/1388 | Which month is the wettest on average in Cairo? | [
"January",
"July",
"September"
] | 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 Cairo, look at the graph.
Choice "Jan" is incorrect.
Choice "Jul" is incorrect.
Choice "Sep" is incorrect.
January has an average monthly precipitation of about 15 millimeters. This is higher than in any other month. So, January is the wettest month on average. |
train/1389 | Complete the text.
Athens was a major trading city-state along the coast of the () Sea. Sparta, known for its well-trained soldiers, was located to the () of Athens. | [
"Aegean . . . northeast",
"Ionian . . . northwest",
"Ionian . . . southeast",
"Aegean . . . southwest"
] | 3 | Ancient Greece was made up of multiple city-states along the Ionian (ahy-OH-nee-uhn), Mediterranean (med-i-tuh-REY-nee-uhn), and Aegean (ah-GEE-an) seas. Two of the most powerful city-states were Athens and Sparta. The map below shows ancient Greece around 500 BCE. Look at the map. Then complete the text below. | closed choice | grade6 | social science | world-history | Greece | Comparing Athens and Sparta: part II | Find Athens and Sparta on the map.
The map shows that Athens is located along the coast of the Aegean Sea. Now look at Sparta and the compass rose. Sparta is located to the southwest of Athens. | |
train/1390 | Which statement describes the Cape Breton Highlands National Park ecosystem? | [
"It has soil that is frozen year-round.",
"It has soil that is rich in nutrients.",
"It has long, cold winters and short, cool summers."
] | 2 | Figure: Cape Breton Highlands National Park.
Cape Breton Highlands National Park is a taiga ecosystem in eastern Canada. It is mostly covered with taiga forests that are home to moose, bears, bald eagles, and other organisms. | 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 taiga is a type of ecosystem. Taigas have the following features: long, cold winters and short, cool summers, many evergreen trees, and soil that is poor in nutrients. So, the following statement describes the Cape Breton Highlands National Park ecosystem: long, cold winters and short, cool summers, many evergreen tr... |
train/1391 | 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 smaller in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 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, but some of them are different sizes and shapes. | 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,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 2 than in Pair 1. So, the magnit... |
train/1392 | Which of these oceans does the prime meridian intersect? | [
"the Pacific Ocean",
"the Indian Ocean",
"the Atlantic Ocean"
] | 2 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects the Atlantic Ocean. It does not intersect the Pacific Ocean or the Indian Ocean. | |
train/1393 | What is the capital of Georgia? | [
"Savannah",
"Athens",
"Atlanta",
"Raleigh"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Atlanta is the capital of Georgia. | ||
train/1394 | Select the mammal below. | [
"great white shark",
"bison"
] | 1 | Mammals have hair or fur and feed their young milk. A red kangaroo is an example of a mammal. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A bison is a mammal. It has fur and feeds its young milk.
Male bison have horns. They can use their horns to defend themselves.
A great white shark is a fish. It lives underwater. It has fins, not limbs.
Great white sharks can live for up to 70 years. |
train/1395 | 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 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 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 | 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,... | Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1. |
train/1396 | 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 2.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs."
] | 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 | 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. |
train/1397 | Which is this organism's scientific name? | [
"Flabellina iodinea",
"Spanish shawl nudibranch"
] | 0 | This organism is a Spanish shawl nudibranch. It is also called Flabellina iodinea. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Flabellina iodinea is written in italics. The first word is capitalized, and the second word is not.
So, Flabellina iodinea is the scientific name. |
train/1398 | Which animal's body is better adapted for protection against a predator with sharp teeth? | [
"desert tortoise",
"fox snake"
] | 0 | Queen scallops live in the ocean. They have a hard outer shell.
The is adapted to protect itself from predators with sharp teeth. It can pull the soft parts of its body into its shell when attacked.
Figure: queen scallop. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the queen scallop.
The queen scallop has a hard outer shell. Its body is adapted for protection against a predator with sharp teeth. The hard shell makes it difficult for predators to hurt or kill the queen scallop.
Now look at each animal. Figure out which animal has a similar adaptation.
The de... |
train/1399 | Which month has the highest average precipitation in Santiago? | [
"October",
"August",
"June"
] | 2 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Santiago, look at the graph.
Choice "Jun" is incorrect.
Choice "Aug" is incorrect.
Choice "Oct" is incorrect.
June has an average monthly precipitation of about 80 millimeters. This is higher than in any other month. So, June has the highest average precipitation. |
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