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train/4800 | Which of the following could Dave'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/4801 | What can happen to a fertilized egg? | [
"It can turn into a spore.",
"It can grow into a thin brown stalk."
] | 1 | This diagram shows the life cycle of a moss. | closed choice | grade7 | natural science | biology | Plant reproduction | Moss and fern life cycles | Moss plants reproduce using both asexual reproduction and sexual reproduction.
Moss plants use their male and female parts for sexual reproduction. The male parts produce sperm. Moss live in damp environments, and moss sperm can travel through water to the female parts.
The sperm fuse with eggs in the female part. This... | A fertilized egg can grow into a thin brown stalk on top of the female part.
The thin brown stalk may make spores, but the sperm and egg do not turn into spores. |
train/4802 | What is the capital of Washington? | [
"New York City",
"Seattle",
"Spokane",
"Olympia"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | ||
train/4803 | What is the capital of Missouri? | [
"Madison",
"Jefferson City",
"Pierre",
"New Haven"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | ||
train/4804 | Which solution has a higher concentration of blue particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 2 | The diagram below is a model of two solutions. Each blue 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 blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... |
train/4805 | Which country is highlighted? | [
"the Marshall Islands",
"Australia",
"Solomon Islands",
"Vanuatu"
] | 2 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Solomon Islands. | ||
train/4806 | What can Mandy and Julian trade to each get what they want? | [
"Mandy can trade her tomatoes for Julian's sandwich.",
"Julian can trade his broccoli for Mandy's oranges.",
"Mandy can trade her tomatoes for Julian's broccoli.",
"Julian can trade his almonds for Mandy'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.
Mandy and Julian open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Mandy wanted b... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Mandy wanted broccoli in her lunch and Julian was hoping for tomatoes. Look at the labeled part of the images.
Mandy has tomatoes. Julian has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | |
train/4807 | Can Hydra vulgaris cells make their own food? | [
"no",
"yes"
] | 0 | This organism is Hydra vulgaris. It is a member of the animal kingdom.
Hydra vulgaris can make new offspring through a process called budding. A small H. vulgaris can start to grow from the side of its parent. When the baby H. vulgaris is fully grown, it will split off from its parent. | 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... | Hydra vulgaris is an animal. Animal cells cannot make their own food. Animals get their food by digesting other organisms. |
train/4808 | Based on the timeline, which statement is true? | [
"The Revolutionary War began 12 years after the end of the French and Indian War.",
"The Boston Massacre was the first battle of the Revolutionary War."
] | 0 | Between 1775 and 1783, Americans fought the British in the Revolutionary War. Look at the timeline of events in the years before the war. Then answer the question. | closed choice | grade8 | social science | us-history | The American Revolution | The Revolutionary War: preparing for war | ||
train/4809 | Which property do these three objects have in common? | [
"fuzzy",
"shiny",
"soft"
] | 1 | 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 soft object changes shape when pressed or squeezed. The metal bar and the sapphire are not soft.
A fuzzy object is covered in soft hair. None of the objects are fuzzy.
A shiny object reflects a lot of light. You can usually see your reflection in a... |
train/4810 | Which country is highlighted? | [
"Barbados",
"Saint Kitts and Nevis",
"Antigua and Barbuda",
"Saint Vincent and the Grenadines"
] | 2 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Antigua and Barbuda. | ||
train/4811 | Which property do these three objects have in common? | [
"blue",
"hard",
"soft"
] | 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 soft object changes shape when pressed or squeezed. All three objects are soft.
A hard object does not change shape when pressed or squeezed. None of the objects are hard.
Blue is a color.
This color is blue. None of the objects are blue.
The prope... |
train/4812 | What can Leon and Martha trade to each get what they want? | [
"Leon can trade his tomatoes for Martha's carrots.",
"Leon can trade his tomatoes for Martha's broccoli.",
"Martha can trade her broccoli for Leon's oranges.",
"Martha can trade her almonds for Leon's tomatoes."
] | 1 | 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.
Leon and Martha open their lunch boxes in the school cafeteria. Neither Leon nor Martha got everything that they wanted. The tabl... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Leon wants broccoli. Martha 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/4813 | Select the organism in the same species as the American bullfrog. | [
"Hemidactylus turcicus",
"Lithobates catesbeianus",
"Bufo guttatus"
] | 1 | This organism is an American bullfrog. Its scientific name is Lithobates catesbeianus. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | An American bullfrog's scientific name is Lithobates catesbeianus.
Hemidactylus turcicus does not have the same scientific name as an American bullfrog. So, Lithobates catesbeianus and Hemidactylus turcicus are not in the same species.
Lithobates catesbeianus has the same scientific name as an American bullfrog. So, th... |
train/4814 | What is the capital of Wyoming? | [
"Billings",
"Boise",
"Laramie",
"Cheyenne"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Cheyenne is the capital of Wyoming. | ||
train/4815 | Which ocean is highlighted? | [
"the Arctic Ocean",
"the Indian Ocean",
"the Southern Ocean",
"the Atlantic Ocean"
] | 2 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Southern Ocean.
The Southern Ocean reaches from the shores of Antarctica to 60° South latitude. | |
train/4816 | Which property matches this object? | [
"opaque",
"hard"
] | 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.
An opaque object does not let light through. The glass flask is not opaque.
A hard object does not change shape when pressed or squeezed. The glass flask is hard. |
train/4817 | Identify the question that Jackson's experiment can best answer. | [
"Do steel nails take fewer days to rust in water compared to vinegar?",
"Do steel nails rust in fewer days when submerged in a large volume of liquid compared to a small volume?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Jackson put one two-inch steel nail into each of six test tubes. He added water to three of the test tubes and vinegar to the other three. In each test tube, he completely covered the nail with the same volume of liquid... | 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/4818 | Which part of the cabbage plant do we usually eat? | [
"the leaves",
"the flowers",
"the fruit"
] | 0 | People use cabbage plants for food. Photosynthesis makes food for the plant. We usually eat the part of the plant that does most of the photosynthesis. | closed choice | grade4 | natural science | biology | Plants | Classify fruits and vegetables as plant parts | The fruits and vegetables we eat are parts of plants! Plants are made up of different structures. The different structures carry out important functions.
The roots take in water and nutrients from the soil. They also hold the plant in place in the soil.
The stem supports the plant. It carries food, water, and nutrients... | The part of the cabbage plant we usually eat is the leaves. They do most of the photosynthesis to make food for the plant. |
train/4819 | What evidence of an earthquake does this picture show? | [
"There are large cracks in the road.",
"There is a white line along the side of the road."
] | 0 | This picture was taken after an earthquake. During an earthquake, the ground shakes. | closed choice | grade2 | natural science | earth-science | Earth events | Find evidence of changes to Earth's surface | Evidence is information that tells you something happened.
How do you look for evidence of a change to Earth's surface?
There are many ways to find evidence of a change to Earth's surface. One way is to look at a picture that was taken after the change.
Here are some examples of what the evidence for different changes ... | |
train/4820 | As the string pulls on the kite, what is the direction of the opposing force? | [
"toward Lexi",
"away from Lexi"
] | 1 | The text below describes a pair of opposing forces. Opposing forces act on an object in opposite directions. Read the text. Then answer the question below.
Lexi flies a kite on a windy day. She uses a string to hold on to the kite. Think about two of the forces that act on the kite:
The wind pushes away from Lexi.
The ... | closed choice | grade3 | natural science | physics | Force and motion | How do balanced and unbalanced forces affect motion? | A force is a push or a pull that acts on an object. Each force acts on an object in a certain direction. If two forces act on an object in opposite directions, they are called opposing forces. | Find the direction the string pulls on the kite.
Lexi flies a kite on a windy day. She uses a string to hold on to the kite. Think about two of the forces that act on the kite:
The wind pushes away from Lexi.
The string pulls toward Lexi.
The text tells you that the string pulls toward Lexi. The opposite direction is a... |
train/4821 | What is the name of the colony shown? | [
"New York",
"South Carolina",
"Vermont",
"Pennsylvania"
] | 0 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony. | ||
train/4822 | 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 south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/4823 | Select the organism in the same species as the Grevy's zebra. | [
"Equus grevyi",
"Cervus canadensis",
"Camelus dromedarius"
] | 0 | This organism is a Grevy's zebra. Its scientific name is Equus grevyi. | 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 Grevy's zebra's scientific name is Equus grevyi.
Equus grevyi has the same scientific name as a Grevy's zebra. So, these organisms are in the same species.
Camelus dromedarius does not have the same scientific name as a Grevy's zebra. So, Equus grevyi and Camelus dromedarius are not in the same species.
Cervus canade... |
train/4824 | Based on the timeline, which of the following statements is true? | [
"A plan to govern the new country was written and adopted during the Revolutionary War.",
"The Articles of Confederation were first written during the Constitutional Convention.",
"The Articles of Confederation were never adopted by the states.",
"The Revolutionary War began after the Constitutional Conventio... | 0 | Look at some of the events that occurred before and after the founding of the United States. Then answer the question below. | closed choice | grade7 | social science | us-history | The Early Republic | The Articles of Confederation | ||
train/4825 | Which is this organism's common name? | [
"great blue heron",
"Ardea herodias"
] | 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, it is the scientific name.
Ardea herodias is the organism's scientific name. So, you know that great blue heron is the common name. |
train/4826 | Which country is highlighted? | [
"Tuvalu",
"Tonga",
"the Federated States of Micronesia",
"Fiji"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | ||
train/4827 | Which animal's limbs are also adapted for swimming? | [
"humpback whale",
"great blue heron"
] | 0 | Sea turtles live in the ocean. They cover long distances in search of food and places to nest.
The has four flippers for limbs. Its limbs are adapted for swimming.
Figure: sea turtle. | 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 sea turtle.
The sea turtle 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 for swimming.
The great b... |
train/4828 | 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 smaller in Pair 2.",
"The magnitude of the magnetic force is smaller 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, but some of them are different sizes. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... |
train/4829 | What is the capital of Florida? | [
"Tallahassee",
"Richmond",
"Orlando",
"Columbia"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Tallahassee is the capital of Florida. | ||
train/4830 | Which continent was involved in the Seven Years' War? | [
"Africa",
"Australia"
] | 0 | The French and Indian War took place in North America in the 1750s and 1760s. That war was part of a much larger conflict known as the Seven Years' War. The map below highlights the countries and territories that fought in the Seven Years' War. Use the map to answer the question below. | closed choice | grade8 | social science | us-history | The American Revolution | Causes of the American Revolution: the French and Indian War | Look at the map.
The map shows that the conflict involved countries and territories throughout Africa, Asia, South America, Europe, and North America. The only continents not involved were Australia, where no Europeans had settled, and Antarctica, where no humans lived.
The French and Indian War was part of a global wa... | |
train/4831 | Select the fish below. | [
"human",
"tiger shark"
] | 1 | Fish live underwater. They have fins, not limbs. A catfish is an example of a fish. | 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 human is a mammal. It has hair and feeds its young milk.
Humans are a type of animal called a primate. Monkeys and apes are also primates.
A tiger shark is a fish. It lives underwater. It has fins, not limbs.
Tiger sharks are nocturnal. This means that they are active mostly at night. |
train/4832 | Which property matches this object? | [
"sweet",
"blue"
] | 0 | 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.
Blue is a color.
This color is blue. The ice pop is not blue.
Sugar has a sweet taste. The ice pop is sweet. |
train/4833 | Which country is highlighted? | [
"Haiti",
"Trinidad and Tobago",
"Barbados",
"Grenada"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Trinidad and Tobago. | ||
train/4834 | Which of the following was a dependent variable in this experiment? | [
"the type of food used in the bird feeders",
"the number of woodpeckers that visited the bird feeders"
] | 1 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Ben often saw woodpeckers perched in trees in his backyard, but he never saw them at his bird feeders. Ben usually filled his feeders with sunflower seeds. He wondered if he could attract woodpeckers by adding... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify independent and dependent variables | Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato... | |
train/4835 | What is the capital of Vermont? | [
"Cheyenne",
"Savannah",
"Montpelier",
"Burlington"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Montpelier is the capital of Vermont. | ||
train/4836 | 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 | 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 south pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. |
train/4837 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"neither; the samples have the same temperature",
"sample B"
] | 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 | grade7 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sample A mus... |
train/4838 | Which of these states is farthest south? | [
"Nevada",
"Washington",
"New York",
"South Dakota"
] | 0 | 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. Nevada is farthest south. | |
train/4839 | What is the capital of Colorado? | [
"Denver",
"Baltimore",
"Richmond",
"Juneau"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Denver is the capital of Colorado. | ||
train/4840 | Identify the question that Wayne's experiment can best answer. | [
"Do cardinals visit feeders containing sunflower seeds more often than feeders containing flax seeds?",
"Do cardinals eat more seeds per visit from feeders containing sunflower seeds compared to feeders containing flax seeds?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Wayne set up five pairs of platform bird feeders around his yard. He filled one feeder in each pair with sunflower seeds and the other feeder with flax seeds. For one week, Wayne watched cardinals visiting the feeders d... | 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/4841 | 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 | 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/4842 | What is the capital of Indiana? | [
"Fort Wayne",
"Providence",
"Montpelier",
"Indianapolis"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Indianapolis is the capital of Indiana. | ||
train/4843 | What is the name of the colony shown? | [
"New York",
"New Hampshire",
"West Virginia",
"Vermont"
] | 0 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony. | ||
train/4844 | Which animal's legs are also adapted for wading? | [
"painted stork",
"African penguin"
] | 0 | Great egrets live near marshes, rivers, and lakes. They eat fish, frogs, insects, and small reptiles that live in shallow water. Great egrets hunt their prey by walking through water, or wading.
The 's legs are adapted for wading. They are lightweight and keep the bird's body above the water.
Figure: great egret. | 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 great egret.
Long legs help the great egret keep its body above the surface of the water while wading. Thin legs are easier to move through the water.
Now look at each animal. Figure out which animal has a similar adaptation.
The painted stork has long, thin legs. Its legs are adapted for wad... |
train/4845 | 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 | grade7 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sample A mus... |
train/4846 | What can Jonathan and Paula trade to each get what they want? | [
"Paula can trade her almonds for Jonathan's tomatoes.",
"Jonathan can trade his tomatoes for Paula's broccoli.",
"Jonathan can trade his tomatoes for Paula's carrots.",
"Paula can trade her broccoli for Jonathan's oranges."
] | 1 | 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.
Jonathan and Paula open their lunch boxes in the school cafeteria. Neither Jonathan nor Paula got everything that they wanted. Th... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Jonathan wants broccoli. Paula 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/4847 | Is dish soap a solid, a liquid, or a gas? | [
"a solid",
"a gas",
"a liquid"
] | 2 | closed choice | grade3 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | Dish soap is a liquid. A liquid takes the shape of any container it is in.
If you pour dish soap out of a bottle, the dish soap will change shape. But the dish soap will still take up the same amount of space. | |
train/4848 | Which property do these four objects have in common? | [
"slippery",
"sour",
"soft"
] | 0 | 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 soft object changes shape when pressed or squeezed. The jello is soft, but the wet ice cube is not.
A slippery object is hard to hold onto or stand on. All four objects are slippery.
A lemon has a sour taste. The wet ice cube and the jello are not ... |
train/4849 | Which property do these two objects have in common? | [
"yellow",
"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.
Yellow is a color.
This color is yellow. The potato chips are yellow, but the ocean water is not.
The property that both objects have in common is salty. |
train/4850 | Which of these continents does the prime meridian intersect? | [
"North America",
"Africa",
"South America"
] | 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 Africa. It does not intersect South America or North America. | |
train/4851 | Which state is highlighted? | [
"New Hampshire",
"Pennsylvania",
"Vermont",
"Connecticut"
] | 2 | closed choice | grade3 | social science | geography | States | Identify states of the Northeast | This state is Vermont. | ||
train/4852 | What is the expected ratio of offspring with a tall stem to offspring with a short stem? Choose the most likely ratio. | [
"4:0",
"1:3",
"2:2",
"3:1",
"0:4"
] | 0 | In a group of pea plants, some individuals have a tall stem and others have a short stem. In this group, the gene for the stem height trait has two alleles. The allele for a short stem (h) is recessive to the allele for a tall stem (H).
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 a tall stem or a short stem, consider whether each phenotype is the dominant or recessive allele's version of the stem height trait. The question tells you that the h allele, which is for a short stem, is recessive to the H allele, which is for ... |
train/4853 | Which of these states is farthest west? | [
"Maine",
"Vermont",
"Connecticut",
"North Carolina"
] | 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 west arrow is pointing. North Carolina is farthest west. | |
train/4854 | Which is the main persuasive appeal used in this ad? | [
"logos (reason)",
"ethos (character)",
"pathos (emotion)"
] | 2 | closed choice | grade7 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to pathos, or emotion. It triggers fear of the discomforts of being sick. | |
train/4855 | Which country is highlighted? | [
"Saint Kitts and Nevis",
"Haiti",
"Jamaica",
"Cuba"
] | 2 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Jamaica. | ||
train/4856 | What can Aaliyah and Wanda trade to each get what they want? | [
"Wanda can trade her almonds for Aaliyah's tomatoes.",
"Wanda can trade her broccoli for Aaliyah's oranges.",
"Aaliyah can trade her tomatoes for Wanda's sandwich.",
"Aaliyah can trade her tomatoes for Wanda's broccoli."
] | 3 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Aaliyah and Wanda open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Aaliyah wante... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Aaliyah wanted broccoli in her lunch and Wanda was hoping for tomatoes. Look at the labeled part of the images.
Aaliyah has tomatoes. Wanda has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | |
train/4857 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 2.",
"The magnetic force is weaker 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. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other. | 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/4858 | Which three months have an average precipitation of around 3.5inches in Seattle? | [
"May, June, and October",
"June, July, and December",
"February, March, and October"
] | 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. 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 Seattle, look at the graph.
Choice "Feb" is incorrect.
Choice "Mar" is incorrect.
Choice "May" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Oct" is incorrect.
Choice "Dec" is incorrect.
Choice "February, March, and October" is incorrect.
Feb... |
train/4859 | 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 north pole of one magnet is closest to the south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. |
train/4860 | Which animal is also adapted to be camouflaged in the snow? | [
"Arctic wolf",
"common hawk-cuckoo"
] | 0 | Short-tailed weasels live in cold, snowy areas in Europe. The short tailed weasel is adapted to be camouflaged in the snow.
Figure: short-tailed weasel. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the short-tailed weasel.
During the winter, the short-tailed weasel has white fur covering its body. It is adapted to be camouflaged in the snow. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
This Arctic wolf has white fur coveri... |
train/4861 | Based on the arrows, which of the following organisms is a consumer? | [
"Arctic fox",
"lichen"
] | 0 | Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade4 | natural science | biology | Ecosystems | Interpret food webs | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Consumers eat other organisms. So, there are arrows in a food web that point from other organisms to consumers.
The lichen does not have any arrows pointing to it. So, the lichen is a producer, not a consumer.
The Arctic fox has arrows pointing to it from the bilberry and the collared lemming. So, the Arctic fox is a c... |
train/4862 | What is the capital of Montana? | [
"Boise",
"Missoula",
"Helena",
"Billings"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Helena is the capital of Montana. | ||
train/4863 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The 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/4864 | Which of these states is farthest west? | [
"North Dakota",
"Pennsylvania",
"Virginia",
"Florida"
] | 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 west arrow is pointing. North Dakota is farthest west. | |
train/4865 | Which continent is highlighted? | [
"Asia",
"Australia",
"Africa",
"Europe"
] | 2 | 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 Africa. | |
train/4866 | What is the expected ratio of offspring with wavy fur to offspring with straight fur? Choose the most likely ratio. | [
"0:4",
"1:3",
"2:2",
"3:1",
"4:0"
] | 2 | In a group of Syrian hamsters, some individuals have straight fur and others have wavy fur. In this group, the gene for the fur texture trait has two alleles. The allele for straight fur (F) is dominant over the allele for wavy fur (f).
This Punnett square shows a cross between two Syrian hamsters. | 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 wavy fur or straight fur, consider whether each phenotype is the dominant or recessive allele's version of the fur texture trait. The question tells you that the F allele, which is for straight fur, is dominant over the f allele, which is for wa... |
train/4867 | Which area on the map shows China? | [
"B",
"C",
"D",
"A"
] | 0 | China is the largest country in East Asia. The official name of China is the People's Republic of China. China's eastern coast borders the Pacific Ocean, and its southwestern region borders the Himalayan Mountains. Look at the map. Then answer the question below. | closed choice | grade7 | social science | global-studies | Asia: society and environment | Country profile: China | Look back at the map. Find the compass rose, which shows the four main directions. Then locate other geographic features on the map, such as the Pacific Ocean and Himalayan Mountains. The information in the question gives clues to determining where China is located on the map:
China is the largest country in East Asia.... | |
train/4868 | Which is the main persuasive appeal used in this ad? | [
"pathos (emotion)",
"logos (reason)",
"ethos (character)"
] | 0 | closed choice | grade7 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to pathos, or emotion. It links the product to a feeling of independence. | |
train/4869 | Which of these states is farthest north? | [
"Colorado",
"South Carolina",
"Florida",
"Arkansas"
] | 0 | 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. Colorado is farthest north. | |
train/4870 | What is the capital of Maryland? | [
"Montpelier",
"Baltimore",
"Boston",
"Annapolis"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Annapolis is the capital of Maryland. | ||
train/4871 | Which continent is highlighted? | [
"Asia",
"Antarctica",
"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/4872 | Which country is highlighted? | [
"Papua New Guinea",
"Australia",
"the Marshall Islands",
"the Federated States of Micronesia"
] | 3 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | ||
train/4873 | Select the bird below. | [
"coral snake",
"griffon vulture"
] | 1 | Birds have feathers, two wings, and a beak. A bald eagle is an example of a bird. | 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 griffon vulture is a bird. It has feathers, two wings, and a beak.
Vultures do not usually hunt live animals. They eat animals that are already dead! This behavior is called scavenging.
A coral snake is a reptile. It has scaly, waterproof skin.
Coral snakes spend most of their time underground or hiding under leaves. |
train/4874 | What type of rock is marble? | [
"sedimentary",
"metamorphic",
"igneous"
] | 1 | This is a piece of marble. Marble forms when rocks such as limestone are changed by high temperature and pressure.
Marble is made mostly of the minerals calcite and dolomite. Polished marble is used to make floors and kitchen counters. | closed choice | grade7 | 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, or compacted, to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when ... | Marble is a metamorphic rock. Like other metamorphic rocks, it forms when a rock is changed by high temperature and pressure.
Heat and pressure can change the type and arrangement of minerals in a rock. This change forms a new rock with different properties. Marble can form when sedimentary rocks such as limestone are ... |
train/4875 | Which country is highlighted? | [
"Barbados",
"Trinidad and Tobago",
"Jamaica",
"Grenada"
] | 1 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Trinidad and Tobago. | ||
train/4876 | Is pyrite a mineral or a rock? | [
"rock",
"mineral"
] | 1 | Pyrite has the following properties:
found in nature
fixed crystal structure
solid
metallic luster
not made by living things
pure substance | 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... | Pyrite has all the properties of a mineral. So, pyrite is a mineral. |
train/4877 | Which property do these three objects have in common? | [
"blue",
"rough",
"slippery"
] | 1 | 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 slippery object is hard to hold onto or stand on. The tree bark and the velcro are not slippery.
Blue is a color.
This color is blue. None of the objects are blue.
A rough object feels scratchy when you touch it. All three objects are rough.
The pr... |
train/4878 | Look at the models of molecules below. Select the elementary substance. | [
"bromine",
"dichloromethane",
"fluoromethane"
] | 0 | 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/4879 | 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 the two samples has the same mass, but the particles in sample A 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 kinetic energy, sampl... |
train/4880 | In this food chain, the diatom is a producer. Why? | [
"It makes its own food.",
"It eats another living thing."
] | 0 | This diagram shows a food chain from the River Frome, a freshwater ecosystem in England. | closed choice | grade3 | natural science | biology | Ecosystems | Identify roles in food chains | Every living thing needs food to stay alive. Living things get their food in different ways. A food chain shows how living things in an ecosystem get their food.
Producers make their own food. Many producers use carbon dioxide, water, and sunlight to make sugar. This sugar is food for the producer.
Consumers eat other ... | In this food chain, the diatom is a producer because it makes its own food. The diatom uses carbon dioxide, water, and sunlight to make its own food. |
train/4881 | Select the fish below. | [
"cardinalfish",
"sea eagle"
] | 0 | Fish live underwater. They have fins, not limbs. A clownfish is an example of a fish. | 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 cardinalfish is a fish. It lives underwater. It has fins, not limbs.
Cardinalfish often live near coral reefs. They are nocturnal, which means that they are active mostly at night.
A sea eagle is a bird. It has feathers, two wings, and a beak.
Sea eagles use their sharp beaks to eat fish and other birds. |
train/4882 | Which of these states is farthest south? | [
"Vermont",
"Michigan",
"Illinois",
"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. Illinois is farthest south. | |
train/4883 | Identify the question that Danielle's experiment can best answer. | [
"Does fabric turn darker when soaked in a mixture of black dye and water for 15 minutes compared to 30 minutes?",
"Does linen fabric turn darker than cotton fabric when soaked in a mixture of black dye and water?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Danielle prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Danielle soaked white linen fabric squares in five of the buckets, and white cotton fabric squares in the o... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/4884 | Which of these cities is marked on the map? | [
"New York City",
"Philadelphia",
"Pittsburgh",
"Washington, D.C."
] | 3 | closed choice | grade4 | social science | geography | Cities | Cities of the Northeast | The city is Washington, D.C. Philadelphia, Pittsburgh, and New York City are marked with gray circles on the map below. | ||
train/4885 | What is the capital of Minnesota? | [
"Harrisburg",
"Anchorage",
"Lincoln",
"Saint Paul"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Saint Paul is the capital of Minnesota. | ||
train/4886 | What is the name of the colony shown? | [
"Tennessee",
"New Jersey",
"Rhode Island",
"Virginia"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Rhode Island. | ||
train/4887 | Which of these states is farthest north? | [
"Missouri",
"California",
"Pennsylvania",
"North Carolina"
] | 2 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Pennsylvania is farthest north. | |
train/4888 | Which of the following could Brenna and Sophia'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/4889 | Which of these states is farthest east? | [
"Wisconsin",
"Tennessee",
"South Carolina",
"Delaware"
] | 3 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Delaware is farthest east. | |
train/4890 | What is the capital of Iowa? | [
"Des Moines",
"Tallahassee",
"Hilo",
"Pierre"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Des Moines is the capital of Iowa. | ||
train/4891 | Which country is highlighted? | [
"The Bahamas",
"Cuba",
"Trinidad and Tobago",
"Jamaica"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Cuba.
Does Cuba have any territorial disputes?
Cuba claims to own Guantanamo Bay Naval Base, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States controls the area and uses it as a military base and prison. A treaty... | ||
train/4892 | Select the mammal below. | [
"toco toucan",
"green iguana",
"thresher shark",
"sea otter"
] | 3 | Mammals have hair or fur and feed their young milk.
Mammals are warm-blooded. Warm-blooded animals can control their body temperature.
A black howler is an example of a mammal. | 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 green iguana is a reptile. It has scaly, waterproof skin.
Iguanas are a type of lizard. Iguanas eat plants and fruit.
A sea otter is a mammal. It has fur and feeds its young milk.
Sea otters have very thick fur. Their fur keeps them warm in cold water.
A toco toucan is a bird. It has feathers, two wings, and a beak.
... |
train/4893 | Is muscovite a mineral? | [
"no",
"yes"
] | 1 | Muscovite has the following properties:
pure substance
not made by organisms
fixed crystal structure
solid
naturally occurring | 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... | Muscovite has all the properties of a mineral. So, muscovite is a mineral. |
train/4894 | As the wind pushes on the umbrella, what is the direction of the opposing force? | [
"away from Ivan",
"toward Ivan"
] | 1 | The text below describes a pair of opposing forces. Opposing forces act on an object in opposite directions. Read the text. Then answer the question below.
Ivan uses his umbrella on a windy day. Think about two of the forces that act on the umbrella:
Ivan pulls toward himself.
The wind pushes away from Ivan. | closed choice | grade3 | natural science | physics | Force and motion | How do balanced and unbalanced forces affect motion? | A force is a push or a pull that acts on an object. Each force acts on an object in a certain direction. If two forces act on an object in opposite directions, they are called opposing forces. | Find the direction the wind pushes on the umbrella.
Ivan uses his umbrella on a windy day. Think about two of the forces that act on the umbrella:
Ivan pulls toward himself.
The wind pushes away from Ivan.
The text tells you that the wind pushes away from Ivan. The opposite direction is toward Ivan. So, the direction o... |
train/4895 | Which property do these two objects have in common? | [
"breakable",
"smooth"
] | 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.
A breakable object will break into pieces if you drop it. The rubber ball is not breakable.
A smooth object is not scratchy or rough. Both objects are smooth.
The property that both objects have in common is smooth. |
train/4896 | 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. | 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/4897 | 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 | 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 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/4898 | What is the name of the colony shown? | [
"Iowa",
"New Jersey",
"New York",
"Maryland"
] | 1 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is New Jersey. | ||
train/4899 | Which bird's beak is also adapted to crack large, hard nuts? | [
"budgerigar",
"palm cockatoo"
] | 1 | Scarlet macaws live in the forests of Central and South America. They eat large seeds and nuts. The shape of the 's beak is adapted to crack open large, hard nuts.
Figure: scarlet macaw. | 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 scarlet macaw.
The scarlet macaw has a thick hooked beak. Its beak is adapted to crack large, hard nuts. The scarlet macaw uses its thick beak to crack the shell of a nut by squeezing it. The hooked shape of the beak can help the bird hold the nut in place while cracking it.
Now look at each ... |
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