image_path stringlengths 7 10 | question stringlengths 14 289 | choices listlengths 2 5 | answer int32 0 4 | hint stringlengths 0 1.85k | task stringclasses 3
values | grade stringclasses 9
values | subject stringclasses 3
values | topic stringclasses 16
values | category stringclasses 75
values | skill stringclasses 158
values | lecture stringclasses 113
values | solution stringlengths 0 2.72k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
train/5500 | Which statement describes the Great Victoria Desert ecosystem? | [
"It has thick, moist soil.",
"It has dry, thin soil."
] | 1 | Figure: Great Victoria Desert.
The Great Victoria Desert is a hot desert ecosystem located in Western Australia and South Australia. It is the largest desert in Australia! The Great Victoria Desert is home to the rare great desert skink. To stay cool during the day, great desert skinks live in holes they dig in the gro... | closed choice | grade6 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A hot desert is a type of ecosystem. Hot deserts have the following features: a small amount of rain, dry, thin soil, and many different types of organisms. So, the following statements describe the Great Victoria Desert ecosystem: a small amount of rain, dry, thin soil, and many different types of organisms. It has a ... |
train/5501 | 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/5502 | Which is this organism's common name? | [
"Flabellina iodinea",
"Spanish shawl nudibranch"
] | 1 | This organism is a Spanish shawl nudibranch. It is also called Flabellina iodinea. | closed choice | grade8 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Flabellina iodinea is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Flabellina iodinea is the organism's scientific name. So, you know that Spanish shawl nudibranch is the common name. |
train/5503 | Select the organism in the same genus as the American alligator. | [
"Trametes versicolor",
"Ictinia mississippiensis",
"Alligator mississippiensis"
] | 2 | This organism is an American alligator. Its scientific name is Alligator mississippiensis. | 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 alligator's scientific name is Alligator mississippiensis. The first word of its scientific name is Alligator.
This organism and the American alligator are in the same genus and the same species! Both organisms have the same scientific name, Alligator mississippiensis.
Ictinia mississippiensis and Alligator... |
train/5504 | 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.
Both poles of each magnet line up with both poles of the other magnet. The north pole of each magnet is closest to the south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. |
train/5505 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Mount Kilimanjaro.
Mount Kilimanjaro is Africa's tallest mountain. Climbers were disappointed that a low pressure system brought clouds to the mountain last weekend.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Mount Kilimanjaro is Africa's tallest mountain. Climbers were disappointed that a low pressure system brought clouds to the mountain last weekend.
The underlined part of the passage tells you about the barometric pressure on Mount Kilimanjaro on the day of the climb. This passage describes t... |
train/5506 | During this time, thermal energy was transferred from () to (). | [
"each aquarium . . . the surroundings",
"the surroundings . . . each aquarium"
] | 0 | Two identical aquariums were next to an open window. One aquarium had a plastic cover on it, and the other was uncovered. This table shows how the temperature of each aquarium changed over 1.5hours. | closed choice | grade8 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each aquarium decreased, which means that the thermal energy of each aquarium decreased. So, thermal energy was transferred from each aquarium to the surroundings. |
train/5507 | What can Jaden and Meg trade to each get what they want? | [
"Meg can trade her broccoli for Jaden's oranges.",
"Jaden can trade his tomatoes for Meg's sandwich.",
"Jaden can trade his tomatoes for Meg's broccoli.",
"Meg can trade her almonds for Jaden'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.
Jaden and Meg open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Jaden wanted broc... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Jaden wanted broccoli in his lunch and Meg was hoping for tomatoes. Look at the labeled part of the images.
Jaden has tomatoes. Meg 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/5508 | What is the capital of Montana? | [
"Helena",
"Santa Fe",
"Missoula",
"Frankfort"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Helena is the capital of Montana. | ||
train/5509 | What is the capital of Rhode Island? | [
"Providence",
"Albany",
"Harrisburg",
"Manchester"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | ||
train/5510 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample B",
"sample A"
] | 0 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, and the particles in both samples have the same average speed. So, the particles in both samples have the same average kinetic energy.
Because the particles in both samples have the same average kinetic energy, the samples must have the same temperature. |
train/5511 | Which of these continents does the equator intersect? | [
"North America",
"Asia",
"Australia"
] | 1 | closed choice | grade5 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The equator is the line at 0° latitude. It intersects Asia. It does not intersect North America or Australia. | |
train/5512 | During this time, thermal energy was transferred from () to (). | [
"each bottle . . . the surroundings",
"the surroundings . . . each bottle"
] | 1 | Two bottles of soda were sitting on a porch on a hot day. The two bottles were identical, except that one bottle was made of brown glass and one bottle was made of clear glass. This table shows how the temperature of each bottle changed over 25minutes. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each bottle increased, which means that the thermal energy of each bottle increased. So, thermal energy was transferred from the surroundings to each bottle. |
train/5513 | Which ocean is highlighted? | [
"the Indian Ocean",
"the Arctic Ocean",
"the Pacific Ocean",
"the Southern Ocean"
] | 2 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Pacific Ocean. | |
train/5514 | 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 | 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 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/5515 | Which continent is highlighted? | [
"Antarctica",
"North America",
"Asia",
"South America"
] | 3 | closed choice | grade3 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is South America. | |
train/5516 | What is the probability that a cat produced by this cross will be homozygous recessive for the fur type gene? | [
"0/4",
"1/4",
"3/4",
"4/4",
"2/4"
] | 1 | In a group of cats, some individuals have straight fur and others have curly fur. In this group, the gene for the fur type trait has two alleles. The allele for curly fur (f) is recessive to the allele for straight fur (F).
This Punnett square shows a cross between two cats. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring genotypes: homozygous or heterozygous?
How do you determine whether an organism is homozygous or heterozygous for a gene? Look at the alleles in the organism's genotype for that gene.
An organism with two identical alleles for a gene is homozygous for that gene.
If both alleles are dominant, the organism is h... | |
train/5517 | What is the capital of Wyoming? | [
"Laramie",
"Cheyenne",
"Wilmington",
"Helena"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Cheyenne is the capital of Wyoming. | ||
train/5518 | Which country is highlighted? | [
"Solomon Islands",
"Papua New Guinea",
"New Zealand",
"Australia"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Australia.
Is Australia a country or a continent?
Both! Australia is a country in Oceania, a region made up of many lands and islands in the Pacific Ocean. Many people say that Australia is the world's smallest continent. But some people call Oceania a continent instead. | ||
train/5519 | Which animal's limbs are also adapted for swimming? | [
"California sea lion",
"ostrich"
] | 0 | Bottlenose dolphins live in the Atlantic, Pacific, and Indian Oceans. They live underwater, but come to the surface to breathe air.
The has flippers for limbs. Its limbs are adapted for swimming.
Figure: bottlenose dolphin. | 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 bottlenose dolphin.
The bottlenose dolphin 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 California sea lion has flippers. Its limbs are adapted for ... |
train/5520 | Which ocean is highlighted? | [
"the Indian Ocean",
"the Pacific Ocean",
"the Atlantic Ocean",
"the Southern Ocean"
] | 2 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Atlantic Ocean. | |
train/5521 | Look at the picture. Which word best describes how these candies feel to the touch? | [
"hard",
"fluffy",
"greasy"
] | 0 | closed choice | grade2 | language science | writing-strategies | Descriptive details | Choose the sensory details that match the picture | When you write, you can use sensory details. These sense words help your reader understand what something looks, sounds, tastes, smells, or feels like.
Sensory Category | Description
Sight | These are words like bright, clean, and purple. A reader can imagine looking at these details.
Sound | These are words like hissi... | Look at the picture.
The word hard describes how these candies feel to the touch.
Greasy and fluffy can also describe how something feels to the touch. But they do not describe these candies. | |
train/5522 | 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/5523 | What is the capital of Massachusetts? | [
"Plymouth",
"Providence",
"Cambridge",
"Boston"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Boston is the capital of Massachusetts. | ||
train/5524 | What is the name of the colony shown? | [
"Georgia",
"Virginia",
"Massachusetts",
"New Hampshire"
] | 0 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Georgia. | ||
train/5525 | Identify the question that Isabelle'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.
Isabelle prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Isabelle soaked white linen fabric squares in five of the buckets, and white cotton fabric squares in the o... | 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/5526 | Which country is highlighted? | [
"Tonga",
"Fiji",
"Papua New Guinea",
"Tuvalu"
] | 1 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Fiji. | ||
train/5527 | Which solution has a higher concentration of green particles? | [
"Solution B",
"neither; their concentrations are the same",
"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/5528 | What can Tyrone and Mason trade to each get what they want? | [
"Tyrone can trade his tomatoes for Mason's sandwich.",
"Mason can trade his broccoli for Tyrone's oranges.",
"Mason can trade his almonds for Tyrone's tomatoes.",
"Tyrone can trade his tomatoes for Mason'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.
Tyrone and Mason open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Tyrone wanted ... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Tyrone wanted broccoli in his lunch and Mason was hoping for tomatoes. Look at the labeled part of the images.
Tyrone has tomatoes. Mason 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/5529 | Is phyllite a mineral or a rock? | [
"rock",
"mineral"
] | 0 | Phyllite has the following properties:
not made by organisms
shows a banding pattern
no fixed crystal structure
naturally occurring
not a pure substance
solid | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | The properties of phyllite match the properties of a rock. So, phyllite is a rock. |
train/5530 | Which of these states is farthest east? | [
"Wyoming",
"California",
"Iowa",
"Washington"
] | 2 | 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. Iowa is farthest east. | |
train/5531 | During this time, thermal energy was transferred from () to (). | [
"the surroundings . . . each refrigerator",
"each refrigerator . . . the surroundings"
] | 0 | Two identical refrigerators in a restaurant kitchen lost power. The door of one fridge was slightly open, and the door of the other fridge was closed. This table shows how the temperature of each refrigerator changed over 10minutes. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each refrigerator increased, which means that the thermal energy of each refrigerator increased. So, thermal energy was transferred from the surroundings to each refrigerator. |
train/5532 | What is the capital of Oklahoma? | [
"Tulsa",
"Oklahoma City",
"New York City",
"Jefferson City"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Oklahoma City is the capital of Oklahoma. | ||
train/5533 | What is the name of the colony shown? | [
"Delaware",
"New Jersey",
"New York",
"Iowa"
] | 0 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Delaware. | ||
train/5534 | What is the capital of South Dakota? | [
"Concord",
"Pierre",
"Baltimore",
"Rapid City"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Pierre is the capital of South Dakota. | ||
train/5535 | What is the capital of Wisconsin? | [
"Minneapolis",
"Springfield",
"Milwaukee",
"Madison"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Madison is the capital of Wisconsin. | ||
train/5536 | During this time, thermal energy was transferred from () to (). | [
"the surroundings . . . each vial",
"each vial . . . the surroundings"
] | 0 | Scientists in a laboratory were working with insulin, a protein often used to treat diabetes. They left two identical vials of insulin in different places. This table shows how the temperature of each vial changed over 15minutes. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each vial increased, which means that the thermal energy of each vial increased. So, thermal energy was transferred from the surroundings to each vial. |
train/5537 | Which country is highlighted? | [
"Grenada",
"Saint Kitts and Nevis",
"Saint Lucia",
"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 Saint Lucia. | ||
train/5538 | Which of the following could Brooke's test show? | [
"how much the drone weighed with the blade guards",
"if the blade guards would break in a crash",
"if adding the blade guards made the drone fly poorly"
] | 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/5539 | Which of these states is farthest west? | [
"Kentucky",
"Oklahoma",
"Pennsylvania",
"Massachusetts"
] | 1 | 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. Oklahoma is farthest west. | |
train/5540 | What is this blood parasite's scientific name? | [
"Trypanosoma irwini",
"Trypanosoma equiperdum"
] | 0 | This species of blood parasite lives in the blood of koalas. It was named after the Australian television personality Steve Irwin. | closed choice | grade4 | natural science | biology | Scientific names | Origins of scientific names | When a scientist identifies a new organism, he or she chooses its scientific name.
Sometimes, an organism is named after the place where it was first found. Other times, an organism is named after the scientist who first identified it. Or, the scientific name might describe the organism's physical traits.
Many of the w... | This organism's scientific name refers to Steve Irwin.
The word irwini refers to Steve Irwin. So, this blood parasite's scientific name is Trypanosoma irwini. |
train/5541 | Which continent is highlighted? | [
"North America",
"Antarctica",
"South America"
] | 2 | closed choice | grade2 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is South America. | |
train/5542 | What is the name of the colony shown? | [
"Illinois",
"North Carolina",
"South Carolina",
"Iowa"
] | 2 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is South Carolina. | ||
train/5543 | Which material is this bouncy ball made of? | [
"clay",
"rubber"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Identify materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials. | Look at the picture of the bouncy ball.
The bouncy ball is made of rubber.
Some rubber comes from a special type of tree. Other types of rubber are made of petroleum. Petroleum is also used to make gasoline for cars. | |
train/5544 | Which of these cities is marked on the map? | [
"New York City",
"San Antonio",
"Detroit",
"Seattle"
] | 3 | closed choice | grade5 | social science | geography | Cities | Major U.S. cities | The city is Seattle, Washington. New York City, Detroit, and San Antonio are marked with gray circles on the map below. | ||
train/5545 | Which continent is highlighted? | [
"Africa",
"South America",
"Europe",
"Antarctica"
] | 0 | closed choice | grade3 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is Africa. | |
train/5546 | Which country is highlighted? | [
"Grenada",
"Saint Vincent and the Grenadines",
"Trinidad and Tobago",
"The Bahamas"
] | 0 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Grenada. | ||
train/5547 | Which property matches this object? | [
"stretchy",
"hard"
] | 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 hard object keeps its shape when you squeeze it. The icy sidewalk is hard.
A stretchy object gets longer when you pull on it. The icy sidewalk is not stretchy. |
train/5548 | Which solution has a higher concentration of purple particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each purple 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 purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... |
train/5549 | What is the capital of New Mexico? | [
"Lansing",
"Santa Fe",
"Austin",
"Olympia"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Santa Fe is the capital of New Mexico. | ||
train/5550 | What is the capital of Wisconsin? | [
"Green Bay",
"Madison",
"Frankfort",
"Columbia"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Madison is the capital of Wisconsin. | ||
train/5551 | Select the organism in the same species as the North American beaver. | [
"Lynx canadensis",
"Castor canadensis",
"Nerodia clarkii"
] | 1 | This organism is a North American beaver. Its scientific name is Castor canadensis. | closed choice | grade6 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A North American beaver's scientific name is Castor canadensis.
Castor canadensis has the same scientific name as a North American beaver. So, these organisms are in the same species.
Lynx canadensis does have the same species within its genus as a North American beaver, but they are not in the same genus! They do not ... |
train/5552 | Which solution has a higher concentration of pink particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 1 | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the pink particles represent the solute. To figure out which solution has a higher concentration of pink particles, look at both the number of pink particles and the volume of the solvent in each container.
Use the concentration formula to find the number of pink particles per milliliter.
... |
train/5553 | Look at the models of molecules below. Select the elementary substance. | [
"tetraphosphorus",
"carbon tetraiodide",
"cyclopropane"
] | 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/5554 | What can Lara and Brendan trade to each get what they want? | [
"Lara can trade her tomatoes for Brendan's broccoli.",
"Brendan can trade his almonds for Lara's tomatoes.",
"Brendan can trade his broccoli for Lara's oranges.",
"Lara can trade her tomatoes for Brendan's carrots."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Lara and Brendan open their lunch boxes in the school cafeteria. Neither Lara nor Brendan got everything that they wanted. The ta... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Lara wants broccoli. Brendan 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/5555 | Which of these states is farthest east? | [
"Maine",
"Virginia",
"Arizona",
"Georgia"
] | 0 | 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. Maine is farthest east. | |
train/5556 | Which is this organism's common name? | [
"common snapping turtle",
"Chelydra serpentina"
] | 0 | This organism is a common snapping turtle. It is also called Chelydra serpentina. | 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,... | Chelydra serpentina is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Chelydra serpentina is the organism's scientific name. So, you know that common snapping turtle is the common name. |
train/5557 | Which is this organism's common name? | [
"sulfur-crested cockatoo",
"Cacatua galerita"
] | 0 | This organism is Cacatua galerita. It is also called a sulfur-crested cockatoo. | 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,... | Cacatua galerita is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Cacatua galerita is the organism's scientific name. So, you know that sulfur-crested cockatoo is the common name. |
train/5558 | Select the organism in the same species as the purple heron. | [
"Ardea purpurea",
"Ardea alba",
"Acanthaster planci"
] | 0 | This organism is a purple heron. Its scientific name is Ardea purpurea. | closed choice | grade7 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A purple heron's scientific name is Ardea purpurea.
Ardea purpurea is in the same genus as Ardea alba, but they are not in the same species.
Organisms in the same species have the same scientific names. Ardea purpurea and Ardea alba are different species within the same genus.
Ardea purpurea has the same scientific nam... |
train/5559 | Which better describes the Steigerwald Forest ecosystem? | [
"It has cold, wet winters. It also has soil that is poor in nutrients.",
"It has cold, wet winters. It also has only a few types of trees."
] | 1 | Figure: Steigerwald Forest.
The Steigerwald Forest is a temperate deciduous forest ecosystem in Bavaria, a state in southern Germany. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A temperate deciduous forest is a type of ecosystem. Temperate deciduous forests have the following features: warm, wet summers and cold, wet winters, soil that is rich in nutrients, and only a few types of trees. So, the Steigerwald Forest has cold, wet winters. It also has only a few types of trees. |
train/5560 | Which of these continents does the equator intersect? | [
"Antarctica",
"Australia",
"Africa"
] | 2 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The equator is the line at 0° latitude. It intersects Africa. It does not intersect Antarctica or Australia. | |
train/5561 | Which of the following statements describess living in an independent city-state? | [
"I vote for a president that rules over many different cities.",
"My city rules itself and is not part of a larger country.",
"All the decisions about my city are made by a faraway emperor.",
"I live by myself in the wilderness."
] | 1 | Athens was one of the most powerful independent city-states in ancient Greece. Look at the definitions below. Then answer the question. | closed choice | grade6 | social science | world-history | Greece | Classical Athens: geography and society | Look at the definitions.
Putting the definitions together, an independent city-state is a self-ruling city with its own government. So, a city-state rules itself and is not part of a larger country.
The ancient Greeks called a city-state a polis, which was the ancient Greek word for city. Today, the root word "polis" i... | |
train/5562 | 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/5563 | What is the capital of Colorado? | [
"Honolulu",
"Richmond",
"Billings",
"Denver"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Denver is the capital of Colorado. | ||
train/5564 | Which animal is also adapted to use its neck to appear large and scary to a predator? | [
"eastern ribbon snake",
"Mozambique spitting cobra"
] | 1 | Frillneck lizards are reptiles. Their predators include owls, eagles, and snakes. The lizard uses its neck to appear large and scary to a predator.
Figure: frillneck lizard. | closed choice | grade5 | 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 an animal's neck is one example of an adaptation. Animals' necks can be adapted in different ways. For example, a large frilled neck might help an animal appear dangerous ... | Look at the picture of the frillneck lizard.
When frightened, the frillneck lizard can spread out its frill to appear larger and more dangerous. If a predator is nearby, the frill can help scare it away.
Now look at each animal. Figure out which animal has a similar adaptation.
The Mozambique spitting cobra has a hood ... |
train/5565 | What can Desmond and Tanner trade to each get what they want? | [
"Tanner can trade his broccoli for Desmond's oranges.",
"Tanner can trade his almonds for Desmond's tomatoes.",
"Desmond can trade his tomatoes for Tanner's carrots.",
"Desmond can trade his tomatoes for Tanner'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.
Desmond and Tanner open their lunch boxes in the school cafeteria. Neither Desmond nor Tanner got everything that they wanted. Th... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Desmond wants broccoli. Tanner 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/5566 | Which continent is highlighted? | [
"Africa",
"Antarctica",
"Australia",
"South America"
] | 0 | 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/5567 | What is the name of the colony shown? | [
"Vermont",
"New York",
"Virginia",
"South Carolina"
] | 1 | closed choice | grade4 | social science | us-history | English colonies in North 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/5568 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 1.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
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 2 are farther apart than the magnets in Pair 1. So, the magnetic force is weaker in Pair 2 than in Pair 1. |
train/5569 | Which property do these two objects have in common? | [
"soft",
"slippery"
] | 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 slippery object is hard to hold onto or stand on. Both objects are slippery.
A soft object changes shape when you squeeze it. Neither of the objects are soft.
The property that both objects have in common is slippery. |
train/5570 | In this food chain, the kelp is a producer. Why? | [
"It eats another living thing.",
"It makes its own food."
] | 1 | This diagram shows a food chain from Monterey Bay, an ocean ecosystem on the coast of California. | 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 kelp is a producer because it makes its own food. The kelp uses carbon dioxide, water, and sunlight to make its own food. |
train/5571 | Which continent is highlighted? | [
"Antarctica",
"Asia",
"South America",
"Australia"
] | 0 | closed choice | grade7 | 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 Antarctica. | |
train/5572 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The 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/5573 | In this food chain, the red-legged grasshopper is a consumer. Why? | [
"It makes its own food.",
"It eats another living thing."
] | 1 | This diagram shows a food chain from a forest ecosystem in Virginia. | 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 red-legged grasshopper is a consumer because it eats another living thing. The red-legged grasshopper in this food chain eats the cotton bush. |
train/5574 | Which sentence correctly describes capybaras? | [
"They are shy animals that usually hide in tall grass.",
"They are wild guinea pigs that live in mountain forests.",
"They are the closest relatives of the hippopotamus.",
"They are large rodents that are powerful swimmers."
] | 3 | Read the text about capybaras.
What animal looks like a guinea pig and a hippopotamus? The world's largest rodent, the capybara! Also called capys, these animals enjoy being in wetlands and rain forest waters. They are strong swimmers that wade in mud to keep cool. Like guinea pigs, capys have short legs and chubby bod... | closed choice | grade5 | language science | reading-comprehension | Informational texts: level 1 | Read passages about animals | Look at the text in bold below. It tells you the best way to describe capybaras.
What animal looks like a guinea pig and a hippopotamus? The world's largest rodent, the capybara! Also called capys, these animals enjoy being in wetlands and rain forest waters. They are strong swimmers that wade in mud to keep cool. Like... | |
train/5575 | Which of the following could Judy's test show? | [
"how much the new turbine would weigh",
"whether the new turbine could produce 10% more electricity",
"if the new turbine could turn easily"
] | 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/5576 | What is the capital of Oklahoma? | [
"Tulsa",
"Albany",
"Oklahoma City",
"Springfield"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Oklahoma City is the capital of Oklahoma. | ||
train/5577 | 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."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different 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,... | 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.
Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are... |
train/5578 | In this experiment, which were part of a control group? | [
"the unsalted ice cubes",
"the salted ice cubes"
] | 0 | The passage below describes an experiment.
After a severe winter storm, Liam's driveway was covered with ice. He read that salt makes ice melt at a lower temperature. Before covering his entire driveway with salt, he wanted to know if adding salt could actually help melt ice in the freezing outdoor temperatures.
Liam ... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify control and experimental groups | Experiments have variables, or parts that change. You can design an experiment to investigate whether changing a variable between different groups has a specific outcome.
For example, imagine you want to find out whether adding fertilizer to soil affects the height of pea plants. You could investigate this question wit... | In this experiment, Liam investigated whether adding salt to ice cubes affects how quickly they melt. The unsalted ice cubes did not get salt. So, they were part of a control group. |
train/5579 | Which of these continents does the prime meridian intersect? | [
"Asia",
"South America",
"Europe"
] | 2 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Europe. It does not intersect Asia or South America. | |
train/5580 | Is a knife a solid, a liquid, or a gas? | [
"a solid",
"a gas",
"a liquid"
] | 0 | closed choice | grade2 | 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 shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter i... | A knife is a solid. You can bend a knife. But it will still have a size and shape of its own. | |
train/5581 | What is the capital of Massachusetts? | [
"Plymouth",
"Cambridge",
"Trenton",
"Boston"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Boston is the capital of Massachusetts. | ||
train/5582 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Marseille.
Marseille is a town on the southern coast of France. Cold winds from the north, called mistral winds, were blowing here last night.
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.
Marseille is a town on the southern coast of France. Cold winds from the north, called mistral winds, were blowing here last night.
The underlined part of the passage tells you about the wind direction in Marseille last night. This passage describes the atmosphere at a certain place and time... |
train/5583 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes. | closed choice | 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 2 attract. The magnets in Pair 1 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/5584 | Is ethyl alcohol 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... | Ethyl alcohol is a liquid you can use to clean things. If you pour ethyl alcohol into a different container, the ethyl alcohol will take the shape of that container. But the ethyl alcohol will still take up the same amount of space. | |
train/5585 | Which property do these three objects have in common? | [
"transparent",
"fragile",
"yellow"
] | 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 fragile object will break into pieces if you drop it. None of the objects are fragile.
Yellow is a color.
This color is yellow. All three objects are yellow.
You can see clearly through a transparent object. None of the objects are transparent.
The... |
train/5586 | Select the mammal below. | [
"red kangaroo",
"American toad"
] | 0 | Mammals have hair or fur and feed their young milk. A sea otter is an example of a mammal. | 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. | An American toad is an amphibian. It has moist skin and begins its life in water.
A red kangaroo is a mammal. It has fur and feeds its young milk. |
train/5587 | What is the name of the colony shown? | [
"Ohio",
"Pennsylvania",
"New Jersey",
"Rhode Island"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Rhode Island. | ||
train/5588 | Which continent is highlighted? | [
"Antarctica",
"Africa",
"Europe"
] | 0 | closed choice | grade2 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is Antarctica. | |
train/5589 | In this experiment, which were part of an experimental group? | [
"the yards with feeders filled with sunflower seeds",
"the yards with empty feeders"
] | 0 | The passage below describes an experiment.
Preston and his neighbors wanted to attract more woodpeckers to their yards. They read that woodpeckers often eat sunflower seeds. The neighbors wanted to find out if filling their bird feeders with sunflower seeds would increase the number of woodpeckers that visited their y... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify control and experimental groups | Experiments have variables, or parts that change. You can design an experiment to investigate whether changing a variable between different groups has a specific outcome.
For example, imagine you want to find out whether adding fertilizer to soil affects the height of pea plants. You could investigate this question wit... | In this experiment, Preston and his neighbors investigated whether adding sunflower seeds to bird feeders affects how many woodpeckers visit yards. So, the yards with feeders filled with sunflower seeds were part of an experimental group.
The yards with empty feeders did not get sunflower seeds. So, they were not part ... |
train/5590 | Which of the following organisms is the producer in this food web? | [
"rotifer",
"green algae",
"shiner"
] | 1 | Below is a food web from Little Rock Lake, a freshwater lake ecosystem in Wisconsin.
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 | grade5 | natural science | biology | Ecosystems | 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... | Producers do not eat other organisms. So, in a food web, producers do not have arrows pointing to them from other organisms.
The rotifer has arrows pointing to it, so it is not a producer.
The green algae does not have any arrows pointing to it. So, the green algae is a producer.
The shiner has an arrow pointing to it,... |
train/5591 | Is galena a mineral? | [
"yes",
"no"
] | 0 | Galena has the following properties:
pure substance
solid
not made by organisms
fixed crystal structure
found in nature | 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... | Galena has all the properties of a mineral. So, galena is a mineral. |
train/5592 | Which property do these three objects have in common? | [
"rough",
"flexible",
"yellow"
] | 1 | Select the best answer. | closed choice | grade3 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A rough object feels scratchy when you touch it. The feather and the paper are not rough.
Yellow is a color.
This color is yellow. None of the objects are yellow.
A flexible object can be folded or bent without breaking easily. All three objects are ... |
train/5593 | Identify the question that Connor's experiment can best answer. | [
"Does temperature affect how much bacteria can grow in liquid?",
"Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Connor mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He ... | 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/5594 | Which solution has a higher concentration of purple particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 0 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade7 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... |
train/5595 | What is the name of the colony shown? | [
"Pennsylvania",
"Rhode Island",
"Massachusetts",
"Georgia"
] | 1 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Rhode Island. | ||
train/5596 | Identify the question that Whitney's experiment can best answer. | [
"Are eggs more likely to float in fresh water or salty water?",
"Does the amount of water in a glass affect whether eggs sink or float in the water?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Whitney poured four ounces of water into each of six glasses. Whitney dissolved one tablespoon of salt in each of three glasses, and did not add salt to the other three. Then, Whitney placed an egg in one glass and obse... | 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/5597 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | 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.
Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are... |
train/5598 | What is the name of the colony shown? | [
"Massachusetts",
"Rhode Island",
"Connecticut",
"New Hampshire"
] | 0 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Massachusetts.
The Massachusetts Colony included land that would later become the state of Maine. Maine was never its own colony. | ||
train/5599 | What is the capital of Arizona? | [
"Cheyenne",
"Santa Fe",
"Phoenix",
"Portland"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Phoenix is the capital of Arizona. |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.