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train/3400 | What is the expected ratio of offspring with yellow peas to offspring with green peas? Choose the most likely ratio. | [
"4:0",
"0:4",
"2:2",
"3:1",
"1:3"
] | 2 | In a group of pea plants, some individuals have yellow peas and others have green peas. In this group, the gene for the pea color trait has two alleles. The allele for green peas (e) is recessive to the allele for yellow peas (E).
This Punnett square shows a cross between two pea plants. | 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 yellow peas or green peas, consider whether each phenotype is the dominant or recessive allele's version of the pea color trait. The question tells you that the e allele, which is for green peas, is recessive to the E allele, which is for yellow... |
train/3401 | Which country is highlighted? | [
"Nauru",
"Vanuatu",
"Solomon Islands",
"Fiji"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Vanuatu.
Does Vanuatu have any territorial disputes?
Vanuatu claims to own Matthew and Hunter Islands, which are disputed islands. In other words, multiple countries or groups claim that the islands rightfully belong to them.
France has controlled the islands since 1929. But shortly after gaining indepe... | ||
train/3402 | Which property matches this object? | [
"flexible",
"translucent"
] | 1 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A flexible object can be folded or bent without breaking easily. The marbles are not flexible.
A translucent object lets light through. But you cannot see clearly through a translucent object. The marbles are translucent. |
train/3403 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"sample A",
"neither; the samples have the same temperature"
] | 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 | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in sample A has more mass than each particle in sample B. The particles in sample A also have a higher average speed than the particles 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 ... |
train/3404 | Is diorite a mineral? | [
"yes",
"no"
] | 1 | Diorite has the following properties:
naturally occurring
not a pure substance
no fixed crystal structure
not made by living things
solid | yes or no | grade5 | 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... | Diorite does not have all the properties of a mineral. So, diorite is not a mineral. |
train/3405 | What is the capital of Mississippi? | [
"Bismarck",
"Jackson",
"Little Rock",
"Springfield"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Jackson is the capital of Mississippi. | ||
train/3406 | Earth's organisms rely on the atmosphere for which of the following? | [
"carbon dioxide",
"sunlight"
] | 0 | Read the text. Then answer the question.
Earth is surrounded by a layer of gases called the atmosphere. The gases that make up the atmosphere sustain life on Earth. Living organisms take in and release some of these gases. Gases in the atmosphere also help insulate Earth from extreme temperatures and block some harmful... | closed choice | grade6 | natural science | earth-science | Climate change | The greenhouse effect | Read the text carefully. The underlined text below shows information about each answer choice.
Earth is surrounded by a layer of gases called the atmosphere. The gases that make up the atmosphere sustain life on Earth. Living organisms take in and release some of these gases. Gases in the atmosphere also help insulate ... | |
train/3407 | Which of the following could Owen's test show? | [
"the amount of sunlight the roof would get throughout the year",
"which side of the roof got more sun over one day",
"how many solar panels could fit on each side of the roof"
] | 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/3408 | Which animal's skin is better adapted for protection against a predator with sharp teeth? | [
"armadillo lizard",
"kingsnake"
] | 0 | Nine-banded armadillos are adapted to defend their bodies against a predator with sharp teeth. They have hard scales covering much of their skin. When frightened, the can roll into a ball to protect the soft parts of its body.
Figure: nine-banded armadillo. | 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 nine-banded armadillo.
The nine-banded armadillo has hard scales on its skin. Its skin is adapted for protection against a predator with sharp teeth. The scales make it difficult for predators to hurt or kill the nine-banded armadillo.
Now look at each animal. Figure out which animal has a si... |
train/3409 | Which statement is true about the average monthly precipitation in Charlotte? | [
"Precipitation does not change much from month to month.",
"Charlotte has a rainy season and a dry season.",
"January is the month with the highest average precipitation."
] | 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 Charlotte, look at the graph.
Choice "Jan" is incorrect.
Choice "January is the month with the highest average precipitation." is incorrect.
Several other months have a slightly higher average precipitation than January.
Choice "Charlotte has a rainy season and a dry seas... |
train/3410 | Which ocean is highlighted? | [
"the Atlantic Ocean",
"the Pacific Ocean",
"the Indian Ocean",
"the Arctic Ocean"
] | 1 | closed choice | grade7 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Pacific Ocean. | |
train/3411 | Can Daucus carota cells make their own food? | [
"yes",
"no"
] | 0 | 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 | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | Daucus carota is a plant. Plant cells can make their own food. Plant cells make food using photosynthesis. | |
train/3412 | What is the capital of North Carolina? | [
"Raleigh",
"Harrisburg",
"Charlotte",
"Baton Rouge"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Raleigh is the capital of North Carolina. | ||
train/3413 | Complete the statement.
Methanol is (). | [
"an elementary substance",
"a compound"
] | 1 | The model below represents a molecule of methanol. Methanol is found in antifreeze, which is used in car engines to prevent certain liquids from freezing in cold weather. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether methanol is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the chemical e... |
train/3414 | What is the capital of Washington? | [
"Olympia",
"Spokane",
"Salt Lake City",
"Anchorage"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | ||
train/3415 | Which of the following is a characteristic of tropical coral reefs? | [
"They have many large rocks called corals.",
"They are usually found in the deep ocean.",
"They have warm, salty water."
] | 2 | A tropical coral reef is a type of ecosystem in the ocean. Tropical coral reefs are found in warm, shallow water near the equator. They have many large formations called corals. Corals may look like rocks or plants, but they are actually structures made up of living animals and can grow over time.
Corals provide shelte... | closed choice | grade7 | natural science | literacy-in-science | Conservation | Coral reef biodiversity and human uses: explore a problem | ||
train/3416 | What is the probability that a human produced by this cross will have Huntington's disease? | [
"4/4",
"3/4",
"1/4",
"2/4",
"0/4"
] | 4 | 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 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/3417 | Which better describes the Gran Sabana ecosystem? | [
"It has warm winters. It also has soil that is poor in nutrients.",
"It has warm summers and warm winters. It also has year-round rain."
] | 0 | Figure: Gran Sabana.
The Gran Sabana is a savanna grassland ecosystem in southeastern Venezuela. | 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 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 Gran Sabana has warm winters. It also has soil that is poor in nutrients. |
train/3418 | Select the mammal below. | [
"rabbit",
"woodpecker"
] | 0 | Mammals have hair or fur and feed their young milk. A giraffe 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 woodpecker is a bird. It has feathers, two wings, and a beak.
Woodpeckers have strong beaks. They use their beaks to drill into wood to hunt for food.
A rabbit is a mammal. It has fur and feeds its young milk.
Rabbits live underground in burrows. A group of rabbit burrows is called a warren. |
train/3419 | Which bird's beak is also adapted to crack large, hard nuts? | [
"spotted dove",
"military macaw"
] | 1 | Palm cockatoos eat large seeds and nuts. The shape of the 's beak is adapted to crack open large, hard nuts.
Figure: palm cockatoo. | 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 palm cockatoo.
The palm cockatoo has a thick hooked beak. Its beak is adapted to crack large, hard nuts. The palm cockatoo uses its thick beak to crack the shell of a nut by squeezing it. The hooked shape of the beak can help the bird hold the nut in place while cracking it.
Now look at each ... |
train/3420 | Identify the question that Dale's experiment can best answer. | [
"Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?",
"Can pennies hold more drops of pure water or water mixed with hand soap?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Dale used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. Dale recorded the number of drops he could add before the wate... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/3421 | Which bird's beak is also adapted to filter through mud? | [
"mute swan",
"tawny owl"
] | 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/3422 | What is the capital of New Mexico? | [
"Louisville",
"Santa Fe",
"Salt Lake City",
"Albuquerque"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Santa Fe is the capital of New Mexico. | ||
train/3423 | Select the fish below. | [
"salmon",
"Mojave rattlesnake"
] | 0 | Fish live underwater. They have fins, not limbs. A tiger shark 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 salmon is a fish. It lives underwater. It has fins, not limbs.
A Mojave rattlesnake is a reptile. It has scaly, waterproof skin. |
train/3424 | What is the capital of Colorado? | [
"Denver",
"Billings",
"Santa Fe",
"Colorado Springs"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Denver is the capital of Colorado. | ||
train/3425 | Which of these states is farthest south? | [
"Connecticut",
"Vermont",
"New Jersey",
"Maine"
] | 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 south arrow is pointing. New Jersey is farthest south. | |
train/3426 | Which of the following could Nate's test show? | [
"if at least 20% of the park would be shaded by trees in each design",
"which design would have the least traffic noise in the concert area",
"which design would have the greatest distance between the concert area and the road"
] | 2 | 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 | grade7 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/3427 | Which animal's limbs are also adapted for climbing trees? | [
"three-toed sloth",
"eastern gray kangaroo"
] | 0 | Lar gibbons live in the forests of Southeast Asia. Their limbs are adapted for climbing trees.
Figure: lar gibbon. | 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.
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 lar gibbon.
The lar gibbon uses its long limbs to reach branches while climbing. It uses its fingers and toes to grab the branches.
Now look at each animal. Figure out which animal has a similar adaptation.
The three-toed sloth has long limbs with fingers and toes. Its limbs are adapted for c... |
train/3428 | Identify the question that Larry's experiment can best answer. | [
"Can pennies hold more drops of pure water or water mixed with hand soap?",
"Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Larry used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. Larry recorded the number of drops he could add before the wa... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/3429 | Is molasses a solid, a liquid, or a gas? | [
"a solid",
"a gas",
"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... | Molasses is a liquid. A liquid takes the shape of any container it is in.
If you pour molasses into a container, the molasses will take the shape of that container. But the molasses will still take up the same amount of space. | |
train/3430 | Which of these states is farthest north? | [
"Louisiana",
"Alabama",
"New Mexico",
"Nevada"
] | 3 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Nevada is farthest north. | |
train/3431 | Which country is highlighted? | [
"Dominica",
"Haiti",
"Barbados",
"the Dominican Republic"
] | 3 | 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/3432 | 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 2.",
"The magnetic force is weaker in Pair 1.",
"The strength 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. | 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/3433 | Based on the Venn diagram, which poem is about a Trojan hero? | [
"the Odyssey",
"the Aeneid"
] | 1 | This Venn diagram shows information about two ancient poems. | closed choice | grade6 | language science | writing-strategies | Visual elements | Read graphic organizers | A graphic organizer is a chart or picture that shows how ideas, facts, or topics are related to one another.
When you read, look for graphic organizers included in the text. You can use these images to find key information. You can also create your own graphic organizers with information that you've read. Doing this ca... | In a Venn diagram, each circle shows information that is true for a particular topic. In any area where circles overlap, the information is true for all of the overlapping topics. This Venn diagram shows information about two ancient poems.
The detail about the Trojan hero Aeneas appears in the circle for the Aeneid bu... |
train/3434 | Which of the following organisms is the primary consumer in this food web? | [
"parasitic jaeger",
"lichen",
"grizzly bear"
] | 2 | 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 | grade6 | 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... | Primary consumers eat producers. So, in a food web, primary consumers have arrows pointing to them from producers.
The brown lemming has arrows pointing to it from the bilberry and the bear sedge. The bilberry and the bear sedge are producers, so the brown lemming is a primary consumer.
The lichen does not have any arr... |
train/3435 | Select the reptile below. | [
"green tree frog",
"human",
"salmon",
"green iguana"
] | 3 | Reptiles have scaly, waterproof skin. Most reptiles live on land.
Reptiles are cold-blooded. The body temperature of cold-blooded animals depends on their environment.
A western rattlesnake is an example of a reptile. | 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 salmon is a fish. It lives underwater. It has fins, not limbs.
Unlike most other fish, salmon can live in both fresh water and salt water.
A green iguana is a reptile. It has scaly, waterproof skin.
Iguanas are a type of lizard. Iguanas eat plants and fruit.
A human is a mammal. It has hair and feeds its young milk.
... |
train/3436 | Which solution has a higher concentration of green particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each green ball represents one particle of solute. | closed choice | grade8 | 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 green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per millilit... |
train/3437 | Which continent is highlighted? | [
"Antarctica",
"Africa",
"Australia",
"North America"
] | 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 North America. | |
train/3438 | What is the capital of Hawaii? | [
"Hilo",
"Denver",
"Salem",
"Honolulu"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Honolulu is the capital of Hawaii. | ||
train/3439 | 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 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/3440 | Which animal's limbs are also adapted for swimming? | [
"giraffe",
"humpback whale"
] | 1 | Northern elephant seals live along the coast of the Pacific Ocean. They spend a lot of time hunting fish at sea.
The has four flippers for limbs. Its limbs are adapted for swimming.
Figure: northern elephant seal. | 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 northern elephant seal.
The northern elephant seal uses its flippers to push itself through water. The flippers can also help it change direction while swimming.
Now look at each animal. Figure out which animal has a similar adaptation.
The humpback whale has flippers. Its limbs are adapted f... |
train/3441 | Identify the question that Manny's experiment can best answer. | [
"Do bananas develop more brown spots when they are kept at room temperature compared to in a cold refrigerator?",
"Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Manny 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, Manny op... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/3442 | Which property do these three objects have in common? | [
"slippery",
"blue",
"stretchy"
] | 2 | 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.
A stretchy object gets longer when you pull on it. All three objects are stretchy.
Blue is a color.
This color is blue. None of the objects are blue.
A slippery object is hard to hold onto or stand on. None of the objects are slippery.
The property t... |
train/3443 | Which solution has a higher concentration of green particles? | [
"Solution A",
"Solution B",
"neither; their concentrations are the same"
] | 0 | The diagram below is a model of two solutions. Each green 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 green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per millilit... |
train/3444 | What is the name of the colony shown? | [
"Ohio",
"Kentucky",
"West Virginia",
"Connecticut"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Connecticut. | ||
train/3445 | Which continent is highlighted? | [
"Africa",
"North America",
"South America",
"Europe"
] | 1 | closed choice | grade6 | 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 North America. | |
train/3446 | What is the name of the colony shown? | [
"New York",
"Maryland",
"Tennessee",
"New Jersey"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is New Jersey. | ||
train/3447 | Which continent is highlighted? | [
"Antarctica",
"North America",
"Australia",
"Africa"
] | 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 Australia. | |
train/3448 | 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 smaller 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 shapes. | 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.
Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magni... |
train/3449 | Select the mammal below. | [
"poison dart frog",
"rabbit"
] | 1 | Mammals have hair or fur and feed their young milk. A gorilla 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 poison dart frog is an amphibian. It has moist skin and begins its life in water.
Poison dart frogs come in many bright colors. Their bright color warns other animals that these frogs are poisonous.
A rabbit is a mammal. It has fur and feeds its young milk.
Rabbits live underground in burrows. A group of rabbit burro... |
train/3450 | 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 2.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 1."
] | 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. | 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/3451 | What is the capital of Kentucky? | [
"Louisville",
"Columbia",
"Frankfort",
"Richmond"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | ||
train/3452 | Which bird's beak is also adapted to catch fish? | [
"northern cardinal",
"great blue heron"
] | 1 | s live near wetlands, marshes, and lakes. They eat mostly fish. The shape of the 's beak is adapted to catch fish.
Figure: Amazon kingfisher. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. ... | Look at the picture of the Amazon kingfisher.
The Amazon kingfisher has a long, straight beak with a sharp tip. Its beak is adapted to catch fish. The Amazon kingfisher can use its beak to grab the slippery body of a fish underwater. It can also catch a fish by stabbing it with its beak.
Now look at each bird. Figure o... |
train/3453 | Identify the question that Maureen's experiment can best answer. | [
"Does the humidity level where tomato seeds are planted affect the number of tomato seedlings that grow?",
"Do more tomato seedlings grow when they are planted in soil with fertilizer compared to soil without fertilizer?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Maureen planted 25 tomato seeds one-half inch below the soil surface in each of six pots. Maureen added an equal amount of fertilizer to three of the six pots. She placed the pots in a plant growth chamber where all the... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/3454 | Which property do these two objects have in common? | [
"soft",
"blue"
] | 0 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
Blue is a color.
This color is blue. Neither of the objects are blue.
A soft object changes shape when you squeeze it. Both objects are soft.
The property that both objects have in common is soft. |
train/3455 | Which continent is highlighted? | [
"Antarctica",
"Asia",
"North America",
"Africa"
] | 3 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Africa. | |
train/3456 | What is the name of the colony shown? | [
"North Carolina",
"Illinois",
"Pennsylvania",
"Indiana"
] | 0 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | ||
train/3457 | Which month is the hottest on average in Cape Town? | [
"June, July, and August",
"April, May, and November",
"December, January, February, and March"
] | 2 | 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 Cape Town, look at the graph.
Choice "Feb" is incorrect.
Choice "Mar" is incorrect.
Choice "Apr" is incorrect.
Choice "May" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
C... |
train/3458 | Which of these cities is marked on the map? | [
"Denver",
"Portland",
"Los Angeles",
"San Francisco"
] | 2 | closed choice | grade5 | social science | geography | Cities | Cities of the West | The city is Los Angeles, California. Denver, Portland, and San Francisco are marked with gray circles on the map below. | ||
train/3459 | 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"
] | 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... | Each particle in sample A has more mass than each particle in sample B. The particles in sample A also have a higher average speed than the particles 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 ... |
train/3460 | What is the name of the colony shown? | [
"South Carolina",
"West Virginia",
"Virginia",
"Pennsylvania"
] | 2 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Virginia.
The Virginia Colony included land that would later become part of the state of West Virginia. West Virginia was never its own colony. | ||
train/3461 | Which of the following could Ellie's test show? | [
"if the blade guards would break in a crash",
"if adding the blade guards made the drone fly poorly",
"how much the drone weighed with the blade guards"
] | 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/3462 | Which country is highlighted? | [
"Nauru",
"Tonga",
"Fiji",
"Vanuatu"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Vanuatu.
Does Vanuatu have any territorial disputes?
Vanuatu claims to own Matthew and Hunter Islands, which are disputed islands. In other words, multiple countries or groups claim that the islands rightfully belong to them.
France has controlled the islands since 1929. But shortly after gaining indepe... | ||
train/3463 | Which property do these two objects have in common? | [
"slippery",
"salty"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
Potato chips have a salty taste. Both objects are salty.
A slippery object is hard to hold onto or stand on. The cracker is not slippery.
The property that both objects have in common is salty. |
train/3464 | Which of these states is farthest east? | [
"Indiana",
"Texas",
"Kansas",
"Georgia"
] | 3 | closed choice | grade4 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Georgia is farthest east. | |
train/3465 | Is the following statement about our solar system true or false?
The volume of Mars is more than three times as large as Mercury's. | [
"true",
"false"
] | 1 | 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. | To determine if this statement is true, calculate the value of three times the volume of Mercury.
Then compare the result to the volume of Mars. The volume of Mars is 160 billion km^3, which is less than 180 billion km^3. So, the volume of Mars is less than three times as large as Mercury's. |
train/3466 | Which property matches this object? | [
"breakable",
"bumpy"
] | 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 bumpy object is covered in lumps and bumps. The fish bowl is not bumpy.
A breakable object will break into pieces if you drop it. The fish bowl is breakable. |
train/3467 | Which property do these three objects have in common? | [
"blue",
"sticky",
"transparent"
] | 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.
A sticky object can attach or stick to other things. The soccer shorts and the sapphire are not sticky.
You can see clearly through a transparent object. The soccer shorts and the blueberry are not transparent.
Blue is a color.
This color is blue. Al... |
train/3468 | Is soap a mineral? | [
"no",
"yes"
] | 0 | Soap has the following properties:
not a pure substance
no fixed crystal structure
made in a factory
solid | 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... | Soap does not have all the properties of a mineral. So, soap is not a mineral. |
train/3469 | Which of the following could Samantha and Justine'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/3470 | Which continent is highlighted? | [
"South America",
"Antarctica",
"Australia",
"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 Australia. | |
train/3471 | Which solution has a higher concentration of green particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 2 | The diagram below is a model of two solutions. Each green 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 green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per millilit... |
train/3472 | Which of the following could Darren's test show? | [
"the amount of bacteria in the water before it was filtered",
"whether an inexpensive filter would become clogged more often",
"whether the filter was clogged"
] | 2 | 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/3473 | What is the capital of Virginia? | [
"Tulsa",
"Bridgeport",
"Atlanta",
"Richmond"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | ||
train/3474 | What is the capital of North Carolina? | [
"Tulsa",
"Birmingham",
"Charleston",
"Raleigh"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Raleigh is the capital of North Carolina. | ||
train/3475 | What is the capital of Wyoming? | [
"Augusta",
"Cheyenne",
"Montgomery",
"Columbia"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Cheyenne is the capital of Wyoming. | ||
train/3476 | Which country is highlighted? | [
"the Dominican Republic",
"Dominica",
"Grenada",
"Haiti"
] | 1 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Dominica. | ||
train/3477 | Which property do these three objects have in common? | [
"scratchy",
"flexible",
"fragile"
] | 2 | 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.
A flexible object can be folded or bent without breaking easily. None of the objects are flexible.
A scratchy object is rough and itchy against your skin. None of the objects are scratchy.
A fragile object will break into pieces if you drop it. All t... |
train/3478 | Which country is highlighted? | [
"Saint Lucia",
"Jamaica",
"Antigua and Barbuda",
"Saint Kitts and Nevis"
] | 3 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Kitts and Nevis. | ||
train/3479 | What is the name of the colony shown? | [
"West Virginia",
"Illinois",
"Massachusetts",
"Georgia"
] | 2 | closed choice | grade8 | social science | us-history | Colonial 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/3480 | Which property matches this object? | [
"scratchy",
"sour"
] | 1 | 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 scratchy object is rough and itchy against your skin. The lime is not scratchy.
A lemon has a sour taste. The lime is sour. |
train/3481 | What is the capital of Maryland? | [
"Concord",
"Annapolis",
"Minneapolis",
"Baltimore"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Annapolis is the capital of Maryland. | ||
train/3482 | What is the capital of Montana? | [
"Helena",
"Orlando",
"Bismarck",
"Billings"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Helena is the capital of Montana. | ||
train/3483 | 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/3484 | What is the capital of Oregon? | [
"Burlington",
"Salem",
"Denver",
"Jackson"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Salem is the capital of Oregon. | ||
train/3485 | Which country is highlighted? | [
"Barbados",
"the Dominican Republic",
"Saint Lucia",
"Saint Vincent and the Grenadines"
] | 0 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Barbados. | ||
train/3486 | Which property do these four objects have in common? | [
"rough",
"shiny",
"slippery"
] | 1 | 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.
A slippery object is hard to hold onto or stand on. The gold nugget is not slippery.
A rough object feels scratchy when you touch it. The metal bar, the crown, and the bracelet are not rough.
A shiny object reflects a lot of light. You can usually se... |
train/3487 | Which i in column 2? | [
"the restaurant",
"the park",
"the library",
"the grocery store"
] | 2 | closed choice | grade3 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The library is in column 2. | |
train/3488 | Look at the models of molecules below. Select the elementary substance. | [
"fluoromethane",
"oxygen",
"cyclopropane"
] | 1 | 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/3489 | Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 0 | Figure: New Zealand.
Dry air has a lower level of humidity than moist air. The air at these volcanoes felt dry last week because the humidity was very low.
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 | grade5 | 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.
Dry air has a lower level of humidity than moist air. The air at these volcanoes felt dry last week because the humidity was very low.
The underlined part of the passage tells you about the humidity around the volcanoes last week. This passage describes the atmosphere at a certain place and ... |
train/3490 | Which i in row A? | [
"the grocery store",
"the park",
"the fire department",
"the gas station"
] | 0 | closed choice | grade3 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The grocery store is in row A. | |
train/3491 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 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 north pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. |
train/3492 | What is the name of the colony shown? | [
"Indiana",
"Virginia",
"Vermont",
"West Virginia"
] | 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/3493 | Which animal's skin is better adapted as a warning sign to ward off predators? | [
"hawk moth",
"sharpnose-puffer"
] | 1 | Lionfish can release venom from the spines on their brightly colored bodies. The bright colors serve as a warning sign that the animal is venomous. The 's skin is adapted to ward off predators.
Figure: lionfish. | 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 lionfish.
The lionfish has venomous spines and brightly colored skin. Its skin is adapted to ward off predators. The bright colors serve as a warning sign that the lionfish is venomous.
Now look at each animal. Figure out which animal has a similar adaptation.
The sharpnose-puffer has a poiso... |
train/3494 | What type of rock is slate? | [
"metamorphic",
"sedimentary"
] | 0 | Slate is a type of rock. It is often used to make roof tiles for houses. Slate can form when rocks like shale are changed by heating and squeezing. | closed choice | grade3 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when a rock is chang... | Slate is a metamorphic rock. Like other metamorphic rocks, it forms when a rock is changed by heating and squeezing.
The center of our planet is very hot. Deep below Earth's surface, rocks can be heated to high temperatures. The rocks can also be squeezed by the weight of rocks around them. Sometimes, the heating and s... |
train/3495 | What is the capital of Kentucky? | [
"Louisville",
"Lexington",
"Oklahoma City",
"Frankfort"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | ||
train/3496 | Which country is highlighted? | [
"Fiji",
"Solomon Islands",
"Palau",
"the Marshall Islands"
] | 1 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Solomon Islands. | ||
train/3497 | 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 | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sample B mus... |
train/3498 | Which of these continents does the equator intersect? | [
"South America",
"North America",
"Australia"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The equator is the line at 0° latitude. It intersects South America. It does not intersect North America or Australia. | |
train/3499 | Which of these continents does the prime meridian intersect? | [
"Australia",
"Antarctica",
"Asia"
] | 1 | 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 Antarctica. It does not intersect Australia or Asia. |
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