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/3700 | What is the name of the colony shown? | [
"Delaware",
"Pennsylvania",
"New York",
"New Jersey"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New Jersey. | ||
train/3701 | Select the chemical formula for this molecule. | [
"HI2",
"H2I",
"H2I2",
"HI"
] | 3 | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Identify chemical formulas for ball-and-stick models | Every substance around you is made up of atoms. Atoms can link together to form molecules. The links between atoms in a molecule are called chemical bonds. Different molecules are made up of different chemical elements, or types of atoms, bonded together.
Scientists use both ball-and-stick models and chemical formulas ... | H is the symbol for hydrogen. According to the legend, hydrogen atoms are shown in light gray. I is the symbol for iodine. According to the legend, iodine atoms are shown in dark purple. This ball-and-stick model shows a molecule with one hydrogen atom and one iodine atom. The chemical formula will contain the symbols ... | |
train/3702 | Why might putting each tadpole in its own pool of water increase the reproductive success of a male Amazonian poison frog? Complete the claim below that answers this question and is best supported by the passage.
Putting each tadpole in its own pool of water increases the chances that (). | [
"the male's tadpoles will be larger when they hatch",
"the male will carry his tadpoles through the forest",
"the male's tadpoles will become adult frogs"
] | 2 | Animals often behave in certain ways that can increase their reproductive success. Read the passage about a specific animal behavior. Then, follow the instructions below.
Amazonian poison frogs live in tropical forests in northern South America. After a male and female frog mate, the female frog lays eggs on a plant. ... | closed choice | grade8 | natural science | literacy-in-science | Adaptations and natural selection | How can animal behaviors affect reproductive success? Identify evidence to support a claim | Animals increase their reproductive success when they have offspring that survive to reproduce.
Animals can increase their chances of having offspring by behaving in ways that help them get partners to mate and reproduce with. These partners are called mates. For example, animals may make special sounds, perform specif... | Look for the part of the passage that describes the effect of putting each tadpole in its own pool of water. Use this information to determine why this behavior can increase the reproductive success of a male Amazonian poison frog.
Choice "Amazonian poison frogs live in tropical forests in northern South America. After... |
train/3703 | 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 | grade6 | 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. |
train/3704 | Which country is highlighted? | [
"Solomon Islands",
"New Zealand",
"Australia",
"Papua New Guinea"
] | 2 | closed choice | grade6 | 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/3705 | 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"
] | 0 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sample B mus... |
train/3706 | Is the following statement about our solar system true or false?
The volume of Uranus is less than one-tenth of the volume of Saturn. | [
"false",
"true"
] | 1 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | To determine if this statement is true, calculate the value of one-tenth the volume of Saturn.
Then compare the result to the volume of Uranus. The volume of Uranus is 68,300 billion km^3, which is less than 82,713 billion km^3. So, the volume of Uranus is less than one-tenth the volume of Saturn. |
train/3707 | 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 south pole of one magnet is closest to the north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. |
train/3708 | Which ocean is highlighted? | [
"the Southern Ocean",
"the Pacific Ocean",
"the Arctic Ocean",
"the Atlantic Ocean"
] | 0 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Southern Ocean.
The Southern Ocean reaches from the shores of Antarctica to 60° South latitude. | |
train/3709 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"sample B",
"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... | Each particle in sample B has more mass than each particle in sample A. The particles in sample B also have a higher average speed than the particles in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average ... |
train/3710 | Which type of force from each friend's hand slides a pizza slice off of the tray? | [
"push",
"pull"
] | 1 | Two friends share a pizza. They each apply a force to a slice of pizza to slide it off of the tray. | closed choice | grade3 | natural science | physics | Force and motion | Identify pushes and pulls | A force is a push or a pull that one object applies to a second object.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | Each friend's hand applies a force to a slice of pizza. This force slides the pizza slice off of the tray. The direction of this force is toward each friend's hand. This force is a pull. |
train/3711 | Which of the following was an independent variable in this experiment? | [
"the type of flour used",
"the volume of the cupcakes"
] | 0 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Donald was baking cupcakes for his stepfather's birthday. Donald wondered whether the volume of a cupcake would be affected by the type of flour in the batter.
Donald bought three types of flour and made three... | 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/3712 | Select the organism in the same genus as the plains leopard frog. | [
"Hyla cinerea",
"Lithobates palustris",
"Agalychnis callidryas"
] | 1 | This organism is a plains leopard frog. Its scientific name is Lithobates blairi. | 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 plains leopard frog's scientific name is Lithobates blairi. The first word of its scientific name is Lithobates.
Lithobates palustris is in the genus Lithobates. The first word of its scientific name is Lithobates. So, Lithobates palustris and Lithobates blairi are in the same genus.
Agalychnis callidryas is in the g... |
train/3713 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
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/3714 | Identify the question that Luther and Roy's experiment can best answer. | [
"Do ping pong balls travel farther when launched from a 30° angle compared to a 45° angle?",
"Do ping pong balls stop rolling along the ground sooner after being launched from a 30° angle or a 45° angle?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Luther placed a ping pong ball in a catapult, pulled the catapult's arm back to a 45° angle, and launched the ball. Then, Luther launched another ping pong ball, this time pulling the catapult's arm back to a 30° angle.... | 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/3715 | Which property do these two objects have in common? | [
"colorful",
"stretchy"
] | 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 colorful object has one or more bright colors. The spring is not colorful.
A stretchy object gets longer when you pull on it. Both objects are stretchy.
The property that both objects have in common is stretchy. |
train/3716 | Which animal is also adapted to be camouflaged among green leaves? | [
"hoverfly",
"emerald tree boa"
] | 1 | Green mantises are insects found in tropical forests around the world. The is adapted to be camouflaged among green leaves.
Figure: green mantis. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the green mantis.
The green mantis has a green body. It is adapted to be camouflaged among green leaves. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The emerald tree boa has bright green scales covering its body. It is adapted ... |
train/3717 | Identify the question that Clayton's experiment can best answer. | [
"Can pennies hold more drops of pure water or water mixed with hand soap?",
"Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Clayton used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. Clayton recorded the number of drops he could add before th... | 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/3718 | What is the probability that a cow produced by this cross will have a black coat? | [
"0/4",
"1/4",
"3/4",
"4/4",
"2/4"
] | 4 | In a group of cows, some individuals have a black coat and others have a red coat. In this group, the gene for the coat color trait has two alleles. The allele for a black coat (L) is dominant over the allele for a red coat (l).
This Punnett square shows a cross between two cows. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | |
train/3719 | Which i in row C? | [
"the fire department",
"the library",
"the park",
"the police department"
] | 3 | closed choice | grade2 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The police department is in row C. | |
train/3720 | Which part of a pine tree makes seeds? | [
"the needles",
"the cones"
] | 1 | This diagram shows the life cycle of a pine tree. | closed choice | grade8 | natural science | biology | Plant reproduction | Angiosperm and conifer life cycles | Gymnosperms are plants that have seeds but not flowers. Conifers are a type of a gymnosperm. Instead of flowers, conifers have cones. Conifers use their cones for sexual reproduction.
Most conifer trees have both male and female cones. The male cones produce pollen. The female cones produce eggs and a sticky substance ... | A pine tree's cones make seeds. Sperm from pollen fuses with an egg inside the female cone. This is called fertilization. The fertilized egg grows into a seed.
A pine tree's needles are its leaves! The needles make most of the food for the tree using photosynthesis. They do not make the seeds. |
train/3721 | Which of these states is farthest east? | [
"Nevada",
"Colorado",
"Iowa",
"Washington"
] | 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 east arrow is pointing. Iowa is farthest east. | |
train/3722 | Is a pair of scissors a solid or a liquid? | [
"a solid",
"a liquid"
] | 0 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid or liquid | Solid and liquid 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 is a li... | A pair of scissors is a solid. A solid has a size and shape of its own.
When you use a pair of scissors to cut paper, the pair of scissors still has a size and shape of its own. | |
train/3723 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade3 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The north pole of one magnet is closest to the south pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. |
train/3724 | Which is the main persuasive appeal used in this ad? | [
"ethos (character)",
"logos (reason)",
"pathos (emotion)"
] | 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 ethos, or character. It notes that the product is recommended by real people (online reviewers). | |
train/3725 | Which property matches this object? | [
"flexible",
"sticky"
] | 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.
A flexible object can be folded or bent without breaking easily. The dress is flexible.
A sticky object can attach or stick to other things. The dress is not sticky. |
train/3726 | What is the capital of Nevada? | [
"Reno",
"Las Vegas",
"Olympia",
"Carson City"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Carson City is the capital of Nevada. | ||
train/3727 | Which of these states is farthest north? | [
"Kansas",
"Maine",
"Rhode Island",
"New Mexico"
] | 1 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Maine is farthest north. | |
train/3728 | 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 | 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... | 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/3729 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Guam.
Guam is an island in the Pacific Ocean. During a typhoon on October 12, 1979, the barometric pressure on Guam reached an all-time low.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade5 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Guam is an island in the Pacific Ocean. During a typhoon on October 12, 1979, the barometric pressure on Guam reached an all-time low.
The underlined part of the passage tells you about the barometric pressure in Guam on October 12, 1979. This passage describes the atmosphere at a certain pl... |
train/3730 | In this food web, which organism contains matter that eventually moves to the bolete fungus? | [
"black bear",
"parasol fungus",
"pine vole"
] | 2 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade8 | natural science | biology | Ecological interactions | Interpret food webs II | 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... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows to the bolete fungus.
The only arrow pointing from the black bear leads to the parasol fungus. No arrows point from the parasol fungus to any other organisms. So, in this food web, matter does not move ... |
train/3731 | What is the name of the colony shown? | [
"Massachusetts",
"North Carolina",
"Michigan",
"Georgia"
] | 1 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is North Carolina. | ||
train/3732 | Which ocean is highlighted? | [
"the Atlantic Ocean",
"the Pacific Ocean",
"the Southern Ocean",
"the Indian Ocean"
] | 0 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Atlantic Ocean. | |
train/3733 | Complete the sentence.
The word "antebellum" means (). | [
"after the election",
"after the long peace",
"before the war",
"before the feast"
] | 2 | The time period in United States history between 1820 and 1861 is often called the antebellum period. During the antebellum period, the North and South became more divided. In the following questions, you learn more about the changes that happened during the antebellum period.
The following table shows other words that... | closed choice | grade8 | social science | us-history | The Antebellum period | Causes of the Civil War: Missouri Compromise to Bleeding Kansas | Look at the underlined parts of the table.
All the words that use the root "ante" mean to come before something else. So, the root ante means "before."
All the words that use the root "bellum" mean to fight or cause war.So, the root bellum means "war."
So, the word "antebellum" means "before the war." The antebellum pe... | |
train/3734 | 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 magnetic force is weaker in Pair 2.",
"The strength of the magnetic force is the same in both pairs."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | 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/3735 | Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 0 | Figure: Smethport, Pennsylvania.
Smethport is a town in northwest Pennsylvania. On March 31, 1989, residents of the town took shelter from golf-ball-sized hail.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade4 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Smethport is a town in northwest Pennsylvania. On March 31, 1989, residents of the town took shelter from golf-ball-sized hail.
The underlined part of the passage tells you about the hail that fell on Smethport on a specific day in 1989. This passage describes the atmosphere at a certain pla... |
train/3736 | What is the capital of Iowa? | [
"Cedar Rapids",
"Indianapolis",
"Lincoln",
"Des Moines"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Des Moines is the capital of Iowa. | ||
train/3737 | Select the organism in the same species as the Canada lynx. | [
"Lynx canadensis",
"Felis silvestris",
"Felis margarita"
] | 0 | This organism is a Canada lynx. Its scientific name is Lynx canadensis. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A Canada lynx's scientific name is Lynx canadensis.
Felis silvestris does not have the same scientific name as a Canada lynx. So, Lynx canadensis and Felis silvestris are not in the same species.
Felis margarita does not have the same scientific name as a Canada lynx. So, Lynx canadensis and Felis margarita are not in ... |
train/3738 | 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"
] | 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 | 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 B has more mass than each particle in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sample B mus... |
train/3739 | What is the capital of Oregon? | [
"Charlotte",
"Sacramento",
"Salt Lake City",
"Salem"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Salem is the capital of Oregon. | ||
train/3740 | Select the organism in the same species as the Eurasian lynx. | [
"Lynx lynx",
"Dendrobates leucomelas",
"Lynx canadensis"
] | 0 | This organism is a Eurasian lynx. Its scientific name is Lynx lynx. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A Eurasian lynx's scientific name is Lynx lynx.
Dendrobates leucomelas does not have the same scientific name as a Eurasian lynx. So, Lynx lynx and Dendrobates leucomelas are not in the same species.
Lynx lynx has the same scientific name as a Eurasian lynx. So, these organisms are in the same species.
Lynx lynx is in ... |
train/3741 | Is the following statement about our solar system true or false?
Jupiter's volume is more than 1,000 times that of Earth. | [
"true",
"false"
] | 0 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To determine if this statement is true, calculate the value of 1,000 times the volume of Earth.
Then compare the result to the volume of Jupiter. The volume of Jupiter is 1.43 x 10^15 km^3, which is more than 1.08 x 10^15 km^3. So, Jupiter's volume is more than 1,000 times that of Earth. |
train/3742 | Which country is highlighted? | [
"Saint Kitts and Nevis",
"Antigua and Barbuda",
"Cuba",
"Jamaica"
] | 2 | 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/3743 | Select the time the lunchroom is most likely to flood. | [
"when a large amount of snow melts quickly",
"during a drought, when there is not much rain"
] | 0 | Imagine a school is facing a problem caused by flooding.
The lunchroom at Sunset Elementary School floods each year. When there is more than one inch of water on the ground outside, water flows under the doors and into the building. Dr. Rogers, the principal, wants to find a way to protect the lunchroom from flooding. | closed choice | grade4 | natural science | literacy-in-science | Engineering practices | Evaluate multiple design solutions to prevent flooding | ||
train/3744 | Identify the question that Ernest and William's experiment can best answer. | [
"Do ping pong balls stop rolling along the ground sooner after being launched from a 30° angle or a 45° angle?",
"Do ping pong balls travel farther when launched from a 30° angle compared to a 45° angle?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Ernest placed a ping pong ball in a catapult, pulled the catapult's arm back to a 45° angle, and launched the ball. Then, Ernest launched another ping pong ball, this time pulling the catapult's arm back to a 30° angle.... | 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/3745 | What can Wayne and Colleen trade to each get what they want? | [
"Wayne can trade his tomatoes for Colleen's carrots.",
"Wayne can trade his tomatoes for Colleen's broccoli.",
"Colleen can trade her almonds for Wayne's tomatoes.",
"Colleen can trade her broccoli for Wayne'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.
Wayne and Colleen open their lunch boxes in the school cafeteria. Neither Wayne nor Colleen got everything that they wanted. The ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Wayne wants broccoli. Colleen 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/3746 | What can Brittany and Camilla trade to each get what they want? | [
"Camilla can trade her broccoli for Brittany's oranges.",
"Camilla can trade her almonds for Brittany's tomatoes.",
"Brittany can trade her tomatoes for Camilla's carrots.",
"Brittany can trade her tomatoes for Camilla'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.
Brittany and Camilla open their lunch boxes in the school cafeteria. Neither Brittany nor Camilla got everything that they wanted... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Brittany wants broccoli. Camilla 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/3747 | Which of these continents does the equator intersect? | [
"Australia",
"Africa",
"Antarctica"
] | 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 equator is the line at 0° latitude. It intersects Africa. It does not intersect Antarctica or Australia. | |
train/3748 | Which of the following could Ayana's test show? | [
"if adding the blade guards made the drone fly poorly",
"how much the drone weighed with the blade guards",
"if the blade guards would break in a crash"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | 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/3749 | Which property matches this object? | [
"hard",
"flexible"
] | 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.
A hard object does not change shape when pressed or squeezed. The water pitcher is hard.
A flexible object can be folded or bent without breaking easily. The water pitcher is not flexible. |
train/3750 | What is the capital of Wyoming? | [
"Helena",
"Boise",
"Cheyenne",
"Laramie"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Cheyenne is the capital of Wyoming. | ||
train/3751 | Which solution has a higher concentration of yellow particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each yellow 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 yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... |
train/3752 | Is the following statement about our solar system true or false?
Jupiter's volume is more than 1,000 times that of Earth. | [
"false",
"true"
] | 1 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To determine if this statement is true, calculate the value of 1,000 times the volume of Earth.
Then compare the result to the volume of Jupiter. The volume of Jupiter is 1.43 x 10^15 km^3, which is more than 1.08 x 10^15 km^3. So, Jupiter's volume is more than 1,000 times that of Earth. |
train/3753 | 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/3754 | Complete the statement.
Propane is (). | [
"a compound",
"an elementary substance"
] | 0 | The model below represents a molecule of propane. Propane is used as fuel for heaters, engines, and outdoor grills. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether propane is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the chemical el... |
train/3755 | What is the capital of Arizona? | [
"Olympia",
"Tucson",
"Helena",
"Phoenix"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Phoenix is the capital of Arizona. | ||
train/3756 | Which country is highlighted? | [
"Saint Vincent and the Grenadines",
"Haiti",
"Cuba",
"The Bahamas"
] | 3 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is The Bahamas. | ||
train/3757 | Which of the following was a dependent variable in this experiment? | [
"the temperature of the water",
"the number of moldy blackberries"
] | 1 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Herman's grandmother suggested that soaking berries in hot water might help prevent the berries from getting moldy.
To test this idea, Herman harvested fresh blackberries and divided them evenly into eight bow... | 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/3758 | What can Hazel and Xavier trade to each get what they want? | [
"Hazel can trade her tomatoes for Xavier's broccoli.",
"Hazel can trade her tomatoes for Xavier's carrots.",
"Xavier can trade his broccoli for Hazel's oranges.",
"Xavier can trade his almonds for Hazel's tomatoes."
] | 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.
Hazel and Xavier open their lunch boxes in the school cafeteria. Neither Hazel nor Xavier got everything that they wanted. The ta... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Hazel wants broccoli. Xavier 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/3759 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: the Red Sea.
The Red Sea is a popular place for windsurfing. Winds are especially strong there each year from November to March.
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.
The Red Sea is a popular place for windsurfing. Winds are especially strong there each year from November to March.
The underlined part of the passage tells you about the usual wind patterns at the Red Sea. This passage does not describe what the weather is like on a particular day. So, this... |
train/3760 | Which of the following best describes a population on sea ice in the Arctic? | [
"a group of ringed seals",
"the walruses and the sea ice",
"the polar bears and the walruses"
] | 0 | Read the passage. Then answer the question below.
Sea ice in the Arctic is a resting place for many mammals. Species such as ringed seals, walruses, and polar bears rest on sea ice when they are not hunting in the water below.
These mammals are adapted to extremely cold temperatures. Ringed seals and walruses grow thi... | closed choice | grade7 | natural science | biology | Ecosystems | Describe populations, communities, and ecosystems | In an environment, organisms interact with each other and with their nonliving surroundings. To help describe these interactions, ecologists use specific terms for different types of groups.
A single organism is an individual. Individuals of the same species that live in the same place are part of a population.
Multipl... | |
train/3761 | In this food chain, the blue sprat is a secondary consumer. Why? | [
"It eats a primary consumer.",
"It eats a producer.",
"It eats a secondary consumer."
] | 0 | This diagram shows a food chain from a tropical coral reef ecosystem off the coast of Australia. | closed choice | grade5 | natural science | biology | Ecosystems | Identify roles in food chains | Every organism needs food to stay alive. Organisms get their food in different ways. A food chain shows how organisms in an ecosystem get their food.
The food chain begins with the producer. A producer can change matter that is not food into food. Many producers use carbon dioxide, water, and sunlight to make sugar. Ca... | In this food chain, the blue sprat is a secondary consumer because it eats a primary consumer. The primary consumer in this food chain is the copepod. |
train/3762 | Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 1 | Figure: Kosice.
Kosice is a town in the European country of Slovakia. High pressure systems and sunny skies are common in Kosice each year in September and October.
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.
Kosice is a town in the European country of Slovakia. High pressure systems and sunny skies are common in Kosice each year in September and October.
The underlined part of the passage tells you about the usual pattern of barometric pressure in Kosice. This passage does not describe what the ... |
train/3763 | Which animal's mouth is also adapted to tear through meat? | [
"tamandua",
"cougar"
] | 1 | Lions are carnivores, or meat eaters. They eat large mammals like zebras and buffalo. The 's mouth is adapted to tear through meat.
Figure: lion. | 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 an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the lion.
The lion has a large mouth and sharp teeth. Its mouth is adapted to tear through meat. The lion uses its large mouth to grab its prey. It uses its sharp teeth to cut up the meat of the prey into pieces it can swallow.
Now look at each animal. Figure out which animal has a similar adapta... |
train/3764 | What is the name of the colony shown? | [
"North Carolina",
"Virginia",
"Connecticut",
"Georgia"
] | 0 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | ||
train/3765 | Which better describes the Galapagos Rift ecosystem? | [
"It has water at the bottom of the ocean. It also has organisms that crawl or stick to the ground.",
"It has no sunlight. It also has many large swimming organisms."
] | 0 | Figure: Galapagos Rift.
The Galapagos Rift is a deep sea ecosystem in the eastern Pacific Ocean. | 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 | The deep sea is a type of ecosystem. Deep sea ecosystems have the following features: water at the bottom of the ocean, no sunlight, and organisms that crawl or stick to the ground. So, the Galapagos Rift has water at the bottom of the ocean. It also has organisms that crawl or stick to the ground. |
train/3766 | Which property do these three objects have in common? | [
"smooth",
"blue",
"fuzzy"
] | 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.
Blue is a color.
This color is blue. The slippers are blue, but the stuffed dice and the kiwi are not.
A smooth object is not scratchy or rough. The slippers and the stuffed dice are not smooth.
A fuzzy object is covered in soft hair. All three objec... |
train/3767 | Which of the following could Sophie and Kendall's test show? | [
"if a new batch of concrete was firm enough to use",
"if the concrete from each batch took the same amount of time to dry"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/3768 | What can a redwood seed grow into? | [
"a male cone",
"a female cone",
"a new plant"
] | 2 | Redwood seeds grow inside of cones. | closed choice | grade4 | natural science | biology | Plants | Describe and construct conifer life cycles | Conifers are plants that grow cones. Conifers use their cones to reproduce, or make new plants like themselves. How do conifers use their cones to reproduce?
Conifers can grow male and female cones. Male cones make pollen, and female cones make eggs. Pollination is what happens when wind blows pollen from male cones on... | A seed can germinate and grow into a new plant.
The new plant can grow male and female cones. But a seed does not grow into a male cone or a female cone. |
train/3769 | What is the capital of Alaska? | [
"Fairbanks",
"Buffalo",
"Portland",
"Juneau"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Juneau is the capital of Alaska. | ||
train/3770 | What is the capital of Illinois? | [
"Chicago",
"Topeka",
"Springfield",
"Nashville"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Springfield is the capital of Illinois. | ||
train/3771 | Which of these organisms contains matter that was once part of the kelp? | [
"zooplankton",
"plainfin midshipman",
"sea urchin"
] | 2 | Below is a food web from an ocean ecosystem in Monterey Bay, off the coast of California.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade6 | natural science | biology | Ecological interactions | Interpret food webs II | 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... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows that starts from the kelp.There is one path matter can take from the kelp to the sea urchin: kelp->sea urchin. There is one path matter can take from the kelp to the orca: kelp->sea urchin->sea otter->o... |
train/3772 | What is the direction of this push? | [
"away from the bow string",
"toward the bow string"
] | 0 | An archer shoots an arrow. The bow string quickly pushes the arrow forward. | closed choice | grade2 | natural science | physics | Force and motion | Identify pushes and pulls | One object can make another object move with a push or a pull.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The archer shoots the arrow away from his bow. The arrow flies forward quickly. The direction of the push is away from the bow string. |
train/3773 | What is the name of the colony shown? | [
"New Jersey",
"New York",
"New Hampshire",
"Pennsylvania"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Pennsylvania. | ||
train/3774 | Which trait did Holophagus have? Select the trait you can observe on the fossil. | [
"long legs",
"two fins on its back",
"a large red lump on its head"
] | 1 | This picture shows a fossil of an animal called Holophagus. Holophagus lived in the ocean and gave birth to live young. | closed choice | grade6 | natural science | earth-science | Fossils | Compare fossils to modern organisms | The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activiti... | |
train/3775 | Which i in row C? | [
"the pond",
"the theater",
"the grocery store",
"the police department"
] | 1 | closed choice | grade2 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The theater is in row C. | |
train/3776 | Which property do these three objects have in common? | [
"fuzzy",
"transparent",
"bumpy"
] | 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 fuzzy object is covered in soft hair. None of the objects are fuzzy.
You can see clearly through a transparent object. None of the objects are transparent.
A bumpy object is covered in lumps and bumps. All three objects are bumpy.
The property that... |
train/3777 | Which specific humidity level was measured within the outlined area shown? | [
"10 grams of water vapor per kilogram of air",
"0 grams of water vapor per kilogram of air",
"19 grams of water vapor per kilogram of air"
] | 2 | The map below shows humidity in the lower atmosphere on June 12, 2013. The map shows specific humidity, a measurement of the amount of water vapor in the air. The outlined area shows an air mass that influenced weather in South America on that day.
Look at the map. Then, answer the question below.
Data source: United S... | closed choice | grade7 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show specific humidity, a measurement of the amount of water vapor in the air.
The map's legend tells you the specific humidity level that each color represents. Colors on the left in th... | Look at the colors shown within the outlined area. Then, use the legend to determine which specific humidity levels those colors represent.
The legend tells you that this air mass contained air with specific humidity levels between 18 and 24 grams of water vapor per kilogram of air.
19 grams of water vapor per kilogram... |
train/3778 | Which animal's feet are also adapted for digging? | [
"slender-legged tree frog",
"six-banded armadillo"
] | 1 | Star-nosed moles are found in many parts of North America. They live in burrows. The moles eat earthworms and nuts, which they find in the soil. The feet of the are adapted for digging.
Figure: star-nosed mole. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur m... | Look at the picture of the star-nosed mole.
The star-nosed mole has long, straight claws. Its feet are adapted for digging. The star-nosed mole uses its claws to break up soil and move it out of the way.
Now look at each animal. Figure out which animal has a similar adaptation.
The six-banded armadillo has long, straig... |
train/3779 | Which ocean is highlighted? | [
"the Arctic Ocean",
"the Pacific Ocean",
"the Indian Ocean",
"the Southern Ocean"
] | 1 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Pacific Ocean. | |
train/3780 | Which property matches this object? | [
"scratchy",
"smooth"
] | 1 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A scratchy object is rough and itchy against your skin. The silver ring is not scratchy.
A smooth object is not scratchy or rough. The silver ring is smooth. |
train/3781 | Identify the question that Carson's experiment can best answer. | [
"Does the type of flour used in the muffins affect the number of muffins that turn brown after 30 minutes in the oven?",
"Do muffins made with white flour have larger volumes than muffins made with whole wheat flour?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Carson made six batches of muffins over the course of one day. He used whole wheat flour in three of the batches and white flour in the other three batches. He divided the batter into muffin tins, using two ounces of ba... | 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/3782 | What is the capital of Alaska? | [
"Hartford",
"Portland",
"Juneau",
"Las Vegas"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Juneau is the capital of Alaska. | ||
train/3783 | What is the name of the colony shown? | [
"New Jersey",
"North Carolina",
"Connecticut",
"Pennsylvania"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Connecticut. | ||
train/3784 | Select the organism in the same genus as the Goliath heron. | [
"Ardea cocoi",
"Strix uralensis",
"Falco tinnunculus"
] | 0 | This organism is a Goliath heron. Its scientific name is Ardea goliath. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A Goliath heron's scientific name is Ardea goliath. The first word of its scientific name is Ardea.
Falco tinnunculus is in the genus Falco. The first word of its scientific name is Falco. So, Falco tinnunculus and Ardea goliath are not in the same genus.
Strix uralensis is in the genus Strix. The first word of its sci... |
train/3785 | Which continent is highlighted? | [
"Antarctica",
"Europe",
"Australia"
] | 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 Australia. | |
train/3786 | Which solution has a higher concentration of yellow particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each yellow 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 yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... |
train/3787 | Which of these states is farthest east? | [
"North Carolina",
"Colorado",
"Michigan",
"North Dakota"
] | 0 | 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 east arrow is pointing. North Carolina is farthest east. | |
train/3788 | Which animal's neck is also adapted for hunting prey while keeping the rest of its body still? | [
"frigatebird",
"great egret"
] | 1 | Black-headed herons live near wetlands and lakes. They eat mostly fish.
The 's neck helps it grab fish while keeping the rest of its body still. If the heron had to move its body, it might scare the fish away.
Figure: black-headed heron. | 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 black-headed heron.
The black-headed heron has a long neck. Its neck is adapted for hunting prey while keeping the rest of its body still. This allows the black-headed heron to grab the prey without scaring it away.
Now look at each animal. Figure out which animal has a similar adaptation.
Th... |
train/3789 | Identify the question that Madelyn and Evan's experiment can best answer. | [
"Does Madelyn's snowboard slide down a hill in less time when it has a layer of wax or when it does not have a layer of wax?",
"Does Madelyn's snowboard slide down a hill in less time when it has a thin layer of wax or a thick layer of wax?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Madelyn applied a thin layer of wax to the underside of her snowboard and rode the board straight down a hill. Then, she removed the wax and rode the snowboard straight down the hill again. She repeated the rides four m... | 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/3790 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"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 sizes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 2 than in Pair 1. So, the magnit... |
train/3791 | Which of the following could Arianna's test show? | [
"whether the new turbine could produce 10% more electricity",
"if the new turbine could turn easily",
"how much the new turbine would weigh"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | 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/3792 | Complete the statement.
Methane is (). | [
"an elementary substance",
"a compound"
] | 1 | The model below represents a molecule of methane. Methane is the main component of natural gas, which is used in homes for heating and cooking. | closed choice | grade8 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether methane is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the chemical el... |
train/3793 | Which is this organism's scientific name? | [
"Brachypelma albopilosum",
"curlyhair tarantula"
] | 0 | This organism is Brachypelma albopilosum. It is also called a curlyhair tarantula. | 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,... | Brachypelma albopilosum is written in italics. The first word is capitalized, and the second word is not.
So, Brachypelma albopilosum is the scientific name. |
train/3794 | Which trait did Priscacara have? Select the trait you can observe on the fossil. | [
"a tail fin",
"a mostly silver body"
] | 0 | This picture shows a fossil of an ancient animal called Priscacara.
In some places, large numbers of Priscacara fossils have been found near each other. This suggests that Priscacara lived in groups. | closed choice | grade3 | natural science | earth-science | Fossils | Compare fossils to modern organisms | The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activiti... | |
train/3795 | Which better describes the Taklamakan Desert ecosystem? | [
"It has long, cold winters. It also has a small amount of rain or snow.",
"It has heavy snow. It also has soil that is frozen year-round."
] | 0 | Figure: Taklamakan Desert.
The Taklamakan Desert is a cold desert ecosystem in northwestern China. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A cold desert is a type of ecosystem. Cold deserts have the following features: a small amount of rain or snow, dry, thin soil, and long, cold winters. So, the Taklamakan Desert has long, cold winters. It also has a small amount of rain or snow. |
train/3796 | What is the name of the colony shown? | [
"Tennessee",
"West Virginia",
"Maryland",
"Florida"
] | 2 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Maryland. | ||
train/3797 | Which specific humidity level was measured within the outlined area shown? | [
"0 grams of water vapor per kilogram of air",
"13 grams of water vapor per kilogram of air",
"23 grams of water vapor per kilogram of air"
] | 2 | The map below shows humidity in the lower atmosphere on June 12, 2013. The map shows specific humidity, a measurement of the amount of water vapor in the air. The outlined area shows an air mass that influenced weather in South America on that day.
Look at the map. Then, answer the question below.
Data source: United S... | closed choice | grade7 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show specific humidity, a measurement of the amount of water vapor in the air.
The map's legend tells you the specific humidity level that each color represents. Colors on the left in th... | Look at the colors shown within the outlined area. Then, use the legend to determine which specific humidity levels those colors represent.
The legend tells you that this air mass contained air with specific humidity levels between 18 and 24 grams of water vapor per kilogram of air.
23 grams of water vapor per kilogram... |
train/3798 | Which better describes the East Scotia Ridge ecosystem? | [
"It has shallow water. It also has organisms that crawl or stick to the ground.",
"It has no sunlight. It also has organisms that crawl or stick to the ground."
] | 1 | Figure: East Scotia Ridge.
The East Scotia Ridge is a deep sea ecosystem in the southern Atlantic Ocean. | 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 | The deep sea is a type of ecosystem. Deep sea ecosystems have the following features: water at the bottom of the ocean, no sunlight, and organisms that crawl or stick to the ground. So, the East Scotia Ridge has no sunlight. It also has organisms that crawl or stick to the ground. |
train/3799 | What is the capital of Missouri? | [
"Des Moines",
"Lansing",
"Jefferson City",
"Indianapolis"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.