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train/3600 | Which continent is highlighted? | [
"Australia",
"Europe",
"Africa",
"South America"
] | 3 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is South America. | |
train/3601 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Nassau.
Nassau, a city in the Bahamas, has many tourists each winter. On Tuesday, it was too humid for some tourists.
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.
Nassau, a city in the Bahamas, has many tourists each winter. On Tuesday, it was too humid for some tourists.
The underlined part of the passage tells you about the humidity in Nassau on Tuesday. This passage describes the atmosphere at a certain place and time. So, this passage describes th... |
train/3602 | Which ocean is highlighted? | [
"the Pacific Ocean",
"the Indian 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/3603 | What is the name of the colony shown? | [
"Rhode Island",
"North Carolina",
"Pennsylvania",
"Florida"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Pennsylvania. | ||
train/3604 | What is the capital of Nevada? | [
"Las Vegas",
"Cheyenne",
"Carson City",
"Little Rock"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Carson City is the capital of Nevada. | ||
train/3605 | Which solution has a higher concentration of blue particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 0 | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. | closed choice | grade8 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... |
train/3606 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Tower of David.
The Tower of David is in the Old City of Jerusalem. Visitors at the tower noticed that the wind suddenly shifted direction early this afternoon.
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 Tower of David is in the Old City of Jerusalem. Visitors at the tower noticed that the wind suddenly shifted direction early this afternoon.
The underlined part of the passage tells you about the wind direction in Jerusalem this afternoon. This passage describes the atmosphere at a certa... |
train/3607 | What is the expected ratio of offspring with a spotted coat to offspring with a black coat? Choose the most likely ratio. | [
"0:4",
"3:1",
"1:3",
"2:2",
"4:0"
] | 1 | In a group of leopards, some individuals have a spotted coat and others have a black coat. In this group, the gene for the coat pattern trait has two alleles. The allele for a black coat (a) is recessive to the allele for a spotted coat (A).
This Punnett square shows a cross between two leopards. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring with a spotted coat or a black coat, consider whether each phenotype is the dominant or recessive allele's version of the coat pattern trait. The question tells you that the a allele, which is for a black coat, is recessive to the A allele, which is ... |
train/3608 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/3609 | Which of the following could Kamal's test show? | [
"which design would have the least traffic noise in the concert area",
"which design would have the greatest distance between the concert area and the road",
"if at least 20% of the park would be shaded by trees in each design"
] | 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/3610 | Which of these states is farthest north? | [
"Rhode Island",
"Louisiana",
"Oklahoma",
"South Carolina"
] | 0 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Rhode Island is farthest north. | |
train/3611 | Which is this organism's scientific name? | [
"blue jay",
"Cyanocitta cristata"
] | 1 | This organism is Cyanocitta cristata. It is also called a blue jay. | 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,... | Cyanocitta cristata is written in italics. The first word is capitalized, and the second word is not.
So, Cyanocitta cristata is the scientific name. |
train/3612 | Which of these organisms contains matter that was once part of the bilberry? | [
"lichen",
"bear sedge",
"barren-ground caribou",
"parasitic jaeger"
] | 3 | Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade7 | 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 bilberry.
The only arrow pointing to the barren-ground caribou starts from the lichen. The lichen does not have any arrows pointing to it. So, in this food web, matter does not move... |
train/3613 | Which country is highlighted? | [
"the Federated States of Micronesia",
"Solomon Islands",
"Palau",
"Samoa"
] | 2 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Palau. | ||
train/3614 | What is the capital of Iowa? | [
"Des Moines",
"Davenport",
"Cedar Rapids",
"Springfield"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Des Moines is the capital of Iowa. | ||
train/3615 | What is the capital of Montana? | [
"Missoula",
"Cheyenne",
"Helena",
"Billings"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Helena is the capital of Montana. | ||
train/3616 | During this time, thermal energy was transferred from () to (). | [
"each salmon . . . the surroundings",
"the surroundings . . . each salmon"
] | 1 | Edwin lit the charcoal in his grill to cook two identical salmon. He put one fish on the left half of the grill and one fish on the right half of the grill. This table shows how the temperature of each salmon changed over 6minutes. | 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 salmon increased, which means that the thermal energy of each salmon increased. So, thermal energy was transferred from the surroundings to each salmon. |
train/3617 | Which animal's feet are also adapted to walk on snow and ice? | [
"tokay gecko",
"polar bear"
] | 1 | Snow leopards live in the snowy mountains of central Asia. The 's feet are adapted for walking on snow and ice.
Figure: snow leopard. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur m... | Look at the picture of the snow leopard.
The snow leopard has furry feet with large pads. Its feet are adapted to walk on snow and ice. The fur can help keep the snow leopard's feet warm. The large pads help spread its weight over a larger area. This allows it to walk on ice without slipping and to walk on snow without... |
train/3618 | Which of the following could Matt's test show? | [
"the amount of bacteria in the water before it was filtered",
"whether an inexpensive filter would become clogged more often",
"whether the filter was clogged"
] | 2 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/3619 | Is the following statement about our solar system true or false?
Jupiter's volume is more than 1,000 times as great as Earth's volume. | [
"true",
"false"
] | 0 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | 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. Jupiter's volume is 1,431,280 billion km^3, which is more than 1,090,000 billion km^3. So, Jupiter's volume is more than 1,000 times as great as Earth's volume. |
train/3620 | Which statement describes the Great Basin Desert ecosystem? | [
"It has warm summers and mild winters.",
"It has long, cold winters.",
"It has a medium amount of rain."
] | 1 | Figure: Great Basin Desert.
The Great Basin Desert is a cold desert ecosystem in the western United States that covers much of Nevada. This desert also covers parts of Utah, California, and Idaho. | closed choice | grade5 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A 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 following statement describes the Great Basin Desert ecosystem: a small amount of rain or snow, dry, thin soil, and long, cold winters. It has long, cold winter... |
train/3621 | 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 | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, but the particles in sample B 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 kinetic energy, sampl... |
train/3622 | What can Isaiah and Jeanette trade to each get what they want? | [
"Jeanette can trade her broccoli for Isaiah's oranges.",
"Isaiah can trade his tomatoes for Jeanette's broccoli.",
"Isaiah can trade his tomatoes for Jeanette's sandwich.",
"Jeanette can trade her almonds for Isaiah's tomatoes."
] | 1 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Isaiah and Jeanette open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Isaiah want... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Isaiah wanted broccoli in his lunch and Jeanette was hoping for tomatoes. Look at the labeled part of the images.
Isaiah has tomatoes. Jeanette 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/3623 | Complete the statement.
Fluoromethane is (). | [
"a compound",
"an elementary substance"
] | 0 | The model below represents a molecule of fluoromethane. Fluoromethane can be used in the part of a refrigerator that keeps the temperature low. | 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 fluoromethane 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 chemi... |
train/3624 | What is the capital of South Carolina? | [
"Jackson",
"Charleston",
"Columbia",
"Trenton"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Columbia is the capital of South Carolina. | ||
train/3625 | What is the probability that a budgerigar parakeet produced by this cross will be heterozygous for the body feather color gene? | [
"0/4",
"2/4",
"3/4",
"1/4",
"4/4"
] | 0 | In a group of budgerigar parakeets, some individuals have green body feathers and others have blue body feathers. In this group, the gene for the body feather color trait has two alleles. The allele for blue body feathers (b) is recessive to the allele for green body feathers (B).
This Punnett square shows a cross betw... | 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/3626 | What is the name of the colony shown? | [
"Georgia",
"Delaware",
"North Carolina",
"Virginia"
] | 0 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Georgia. | ||
train/3627 | Select the reptile below. | [
"water buffalo",
"cobra",
"Japanese tree frog",
"common toad"
] | 1 | Reptiles have scaly, waterproof skin. Most reptiles live on land.
Reptiles are cold-blooded. The body temperature of cold-blooded animals depends on their environment.
An American alligator is an example of a reptile. | closed choice | grade4 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals. | A Japanese tree frog is an amphibian. It has moist skin and begins its life in water.
There are many kinds of tree frogs. Most tree frogs are very small. They can walk on thin branches.
A water buffalo is a mammal. It has hair and feeds its young milk.
Water buffaloes live in Asia. Some people raise water buffaloes for... |
train/3628 | Which solution has a higher concentration of purple particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 2 | 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/3629 | Which i in column 3? | [
"the fast-food restaurant",
"the theater",
"the grocery store",
"the pond"
] | 1 | closed choice | grade3 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The theater is in column 3. | |
train/3630 | What is the capital of Nebraska? | [
"Omaha",
"Saint Paul",
"Billings",
"Lincoln"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Lincoln is the capital of Nebraska. | ||
train/3631 | Which air temperature was measured within the outlined area shown? | [
"2°C",
"7°C",
"23°C"
] | 1 | The map below shows air temperatures in the lower atmosphere on February 21, 2017. The outlined area shows an air mass that influenced weather in Africa on that day.
Look at the map. Then, answer the question below.
Data source: United States National Oceanic and Atmospheric Administration/Earth System Research Laborat... | 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 air temperatures.
The map's legend tells you the temperature that each color represents. Colors on the left in the legend represent lower temperatures than colors on the right. For ... | Look at the colors shown within the outlined area. Then, use the legend to determine which air temperatures those colors represent.
The legend tells you that this air mass contained air with temperatures between 5°C and 20°C.
7°C is within this range.
2°C and 23°C are outside of this range. |
train/3632 | Is wet glue a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid"
] | 1 | 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... | Wet glue is a liquid. A liquid takes the shape of any container it is in.
If you pour wet glue out of a bottle, the glue will change shape. But the wet glue will still take up the same amount of space. | |
train/3633 | Which solution has a higher concentration of yellow particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 2 | 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/3634 | Complete the statement.
Silane is (). | [
"a compound",
"an elementary substance"
] | 0 | The model below represents a molecule of silane. Silane is used to produce some types of solar cells, which make electricity from sunlight. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | All substances are made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For some element... | Count the number of chemical elements represented in the model. Then, decide if silane is an elementary substance or a compound.
In this model, each ball is labeled with Si for silicon or H for hydrogen. So, the model shows you that silane is made of two chemical elements bonded together.
Substances made of two or more... |
train/3635 | Is celestine a mineral? | [
"yes",
"no"
] | 0 | Celestine has the following properties:
found in nature
not made by organisms
solid
fixed crystal structure
pure substance | 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... | Celestine has all the properties of a mineral. So, celestine is a mineral. |
train/3636 | 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."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud... |
train/3637 | 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."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other. | Distance affects the strength of the magnetic force. But the distance between the magnets in Pair 1 and in Pair 2 is the same.
So, the strength of the magnetic force is the same in both pairs. |
train/3638 | Which of the following could Ben's test show? | [
"how long it would take the sample fabric to dry after it absorbed one drop of water",
"if the sample fabric would absorb one drop of water in less than one second",
"how much athletes would sweat in the fabric"
] | 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 | 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/3639 | Look at the models of molecules below. Select the elementary substance. | [
"chlorine",
"hydrazine",
"carbon tetrachloride"
] | 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/3640 | What can Aisha and Hayley trade to each get what they want? | [
"Aisha can trade her tomatoes for Hayley's broccoli.",
"Hayley can trade her broccoli for Aisha's oranges.",
"Aisha can trade her tomatoes for Hayley's sandwich.",
"Hayley can trade her almonds for Aisha'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.
Aisha and Hayley open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Aisha wanted b... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Aisha wanted broccoli in her lunch and Hayley was hoping for tomatoes. Look at the labeled part of the images.
Aisha has tomatoes. Hayley 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/3641 | What is the capital of Idaho? | [
"Houston",
"Pierre",
"Boise",
"Nampa"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Boise is the capital of Idaho. | ||
train/3642 | Is milk a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid"
] | 1 | 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... | Milk is a liquid. A liquid takes the shape of any container it is in.
If you pour milk into a different container, the milk will take the shape of that container. But the milk will still take up the same amount of space. | |
train/3643 | Which animal's skin is also adapted for survival in cold places? | [
"giant pangolin",
"musk ox"
] | 1 | s live in the Canadian Arctic and Greenland. The 's skin is adapted to help the animal survive in cold places.
Figure: Arctic hare. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the Arctic hare.
During the winter, the Arctic hare has thick fur covering its skin. Its skin is adapted for survival in cold places. The Arctic hare uses its fur to keep warm in cold weather.
Now look at each animal. Figure out which animal has a similar adaptation.
The musk ox has skin with thi... |
train/3644 | Which of these colonies was Middle Colonies? | [
"Connecticut",
"New Jersey",
"New Hampshire"
] | 1 | In the following questions, you will learn about the origins of the Middle Colonies. The Middle Colonies made up the middle part of the Thirteen Colonies, which were ruled by England in the 1600s and 1700s. The map below shows the Thirteen Colonies in 1750. Look at the map. Then answer the question below. | closed choice | grade7 | social science | us-history | Colonial America | Middle Colonies: founding and government | Look at the legend on the map.
The rest of the Thirteen Colonies were part of New England or the Southern Colonies. | |
train/3645 | What can Ken and Candice trade to each get what they want? | [
"Candice can trade her broccoli for Ken's oranges.",
"Candice can trade her almonds for Ken's tomatoes.",
"Ken can trade his tomatoes for Candice's carrots.",
"Ken can trade his tomatoes for Candice'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.
Ken and Candice open their lunch boxes in the school cafeteria. Neither Ken nor Candice got everything that they wanted. The tabl... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Ken wants broccoli. Candice 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/3646 | What is the capital of Maine? | [
"Augusta",
"Harrisburg",
"Portland",
"Providence"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | ||
train/3647 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 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 | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 1 than in Pair 2. So, the magnitud... |
train/3648 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
Both poles of each magnet line up with both poles of the other magnet. The south pole of each magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/3649 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is stronger in Pair 2.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 1."
] | 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.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. |
train/3650 | Which animal's mouth is also adapted to get insects out of burrows? | [
"long-beaked echidna",
"blackbuck"
] | 0 | Tamanduas eat insects such as ants and termites. These insects often live in holes called burrows. The 's mouth is adapted to get insects out of burrows.
Figure: tamandua. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of 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 tamandua.
A tube-shaped snout helps the tamandua reach into a burrow. A long, sticky tongue helps it catch the insects.
Now look at each animal. Figure out which animal has a similar adaptation.
The long-beaked echidna has a tube-shaped snout and a long, sticky tongue. Its mouth is adapted to... |
train/3651 | Which of these states is farthest south? | [
"South Carolina",
"Rhode Island",
"Kansas",
"Nevada"
] | 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 south arrow is pointing. South Carolina is farthest south. | |
train/3652 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Gulf Coast of Florida.
The summer months are a popular time for tourists to visit the Gulf Coast of Florida, which is known for its white sand beaches. The winds are calm there today.
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 summer months are a popular time for tourists to visit the Gulf Coast of Florida, which is known for its white sand beaches. The winds are calm there today.
The underlined part of the passage tells you about the wind speed on the Gulf Coast of Florida today. This passage describes the at... |
train/3653 | Which of these states is farthest north? | [
"Alabama",
"South Carolina",
"Nevada",
"Texas"
] | 2 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Nevada is farthest north. | |
train/3654 | Which better describes the tide pool ecosystems in Montaña De Oro State Park? | [
"It has daily flooding and draining of seawater. It also has water that is poor in nutrients.",
"It has water that is rich in nutrients. It also has many different types of organisms."
] | 1 | Figure: Montaña De Oro State Park.
Montaña De Oro State Park is in California. The park is on the coast of the Pacific Ocean. It has many tide pool ecosystems. | 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 tide pool is a type of ecosystem. Tide pool ecosystems have the following features: daily flooding and draining of seawater, water that is rich in nutrients, and many different types of organisms. So, the tide pool ecosystems in Montaña De Oro State Park have water that is rich in nutrients. They also have many diffe... |
train/3655 | Which continent is highlighted? | [
"South America",
"Europe",
"North America",
"Africa"
] | 0 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is South America. | |
train/3656 | Which month is the wettest on average in Christchurch? | [
"May",
"December",
"April"
] | 0 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A... | To describe the average precipitation trends in Christchurch, look at the graph.
Choice "Apr" is incorrect.
Choice "May" is incorrect.
Choice "Dec" is incorrect.
May has an average monthly precipitation of about 70 millimeters. This is higher than in any other month. So, May is the wettest month on average. |
train/3657 | Which continent is highlighted? | [
"Europe",
"Australia",
"Antarctica",
"Asia"
] | 0 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Europe. | |
train/3658 | Is the following statement about our solar system true or false?
The volume of Mercury is less than one-tenth of the volume of Earth. | [
"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 Earth.
Then compare the result to the volume of Mercury. The volume of Mercury is 60 billion km^3, which is less than 109 billion km^3. So, the volume of Mercury is less than one-tenth of the volume of Earth. |
train/3659 | Complete the text to describe the diagram.
Solute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium. | [
"to the right than to the left",
"to the left than to the right"
] | 0 | The diagram below shows a solution with one solute. Each solute particle is represented by a yellow ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.
The diagram shows how the solution can change over time... | closed choice | grade6 | natural science | chemistry | Solutions | Diffusion across membranes | In a solution, solute particles move and spread throughout the solvent. The diagram below shows how a solution can change over time. Solute particles move from the area where they are at a higher concentration to the area where they are at a lower concentration. This movement happens through the process of diffusion.
A... | Look at the diagram again. It shows you how the solution changed during the process of diffusion.
Before the solute particles reached equilibrium, there were 6 solute particles on the left side of the membrane and 4 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there... |
train/3660 | What is the capital of Oklahoma? | [
"Oklahoma City",
"Springfield",
"Tulsa",
"Sacramento"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Oklahoma City is the capital of Oklahoma. | ||
train/3661 | Complete the statement.
Aluminum is (). | [
"a compound",
"an elementary substance"
] | 1 | The model below represents aluminum. uminum is a metal that is used to make many items, from soda cans to airplanes. | 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 aluminum is an elementary substance or a compound.
Step 1: Interpret the model.
In the space-filling model shown above, all of the balls are the same color:
. The legend shows that gray represents the chemical element with the atomic symbol Al. So, the model shows you that aluminum is... |
train/3662 | Which property do these three objects have in common? | [
"salty",
"sweet",
"scratchy"
] | 1 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
Potato chips have a salty taste. None of the objects are salty.
Sugar has a sweet taste. All three objects are sweet.
A scratchy object is rough and itchy against your skin. None of the objects are scratchy.
The property that all three objects have i... |
train/3663 | Complete the text to describe the diagram.
Solute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium. | [
"to the left than to the right",
"to the right than to the left"
] | 1 | The diagram below shows a solution with one solute. Each solute particle is represented by a yellow ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.
The diagram shows how the solution can change over time... | closed choice | grade6 | natural science | chemistry | Solutions | Diffusion across membranes | In a solution, solute particles move and spread throughout the solvent. The diagram below shows how a solution can change over time. Solute particles move from the area where they are at a higher concentration to the area where they are at a lower concentration. This movement happens through the process of diffusion.
A... | Look at the diagram again. It shows you how the solution changed during the process of diffusion.
Before the solute particles reached equilibrium, there were 8 solute particles on the left side of the membrane and 2 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there... |
train/3664 | Which bird's beak is also adapted to tear through meat? | [
"bateleur",
"common shelduck"
] | 0 | Black vultures are scavengers. They find and eat the bodies of dead animals. The shape of the 's beak is adapted to tear through meat.
Figure: black vulture. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. ... | Look at the picture of the black vulture.
The black vulture has a sharp hooked beak. Its beak is adapted to tear through meat. The sharp hook can help the black vulture cut the meat into pieces it can swallow.
Now look at each bird. Figure out which bird has a similar adaptation.
The bateleur has a sharp hooked beak. I... |
train/3665 | Which country is highlighted? | [
"Cuba",
"Haiti",
"The Bahamas",
"Dominica"
] | 2 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is The Bahamas. | ||
train/3666 | What is the capital of Florida? | [
"Boise",
"Boston",
"Tampa",
"Tallahassee"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Tallahassee is the capital of Florida. | ||
train/3667 | During this time, thermal energy was transferred from () to (). | [
"each salmon . . . the surroundings",
"the surroundings . . . each salmon"
] | 1 | Anthony lit the charcoal in his grill to cook two identical salmon. He put one fish on the left half of the grill and one fish on the right half of the grill. This table shows how the temperature of each salmon changed over 6minutes. | 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 salmon increased, which means that the thermal energy of each salmon increased. So, thermal energy was transferred from the surroundings to each salmon. |
train/3668 | Which property do these three objects have in common? | [
"fragile",
"blue",
"bouncy"
] | 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.
Blue is a color.
This color is blue. The spring and the basketball are not blue.
A bouncy object will bounce back from the floor if you drop it. All three object... |
train/3669 | Which country is highlighted? | [
"Saint Lucia",
"Barbados",
"Saint Vincent and the Grenadines",
"The Bahamas"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Barbados. | ||
train/3670 | Which of the following could Shawna and Maddie's test show? | [
"if the concrete from each batch took the same amount of time to dry",
"if a new batch of concrete was firm enough to use"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/3671 | What is the capital of Minnesota? | [
"Olympia",
"Minneapolis",
"Saint Paul",
"Columbus"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Saint Paul is the capital of Minnesota. | ||
train/3672 | 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 stronger in Pair 1.",
"The magnetic force is stronger 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 closer together, the magnetic force between them is stronger.
The magnets in Pair 2 are closer together than the magnets in Pair 1. So, the magnetic force is stronger in Pair 2 than in Pair 1. |
train/3673 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 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 | 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,... | Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is greater in Pair 1 than in Pair 2. |
train/3674 | What is the capital of Nebraska? | [
"Lincoln",
"Salt Lake City",
"Omaha",
"Columbus"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Lincoln is the capital of Nebraska. | ||
train/3675 | Which of the following could Alec's test show? | [
"the amount of sunlight the roof would get throughout the year",
"how many solar panels could fit on each side of the roof",
"which side of the roof got more sun over one day"
] | 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/3676 | 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 smaller 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 shapes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magni... |
train/3677 | What is the capital of Virginia? | [
"Richmond",
"Arlington",
"Montgomery",
"Providence"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | ||
train/3678 | 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."
] | 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,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud... |
train/3679 | Identify the question that Mitchell's experiment can best answer. | [
"Do steel nails rust in fewer days when submerged in a large volume of liquid compared to a small volume?",
"Do steel nails take fewer days to rust in water compared to vinegar?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Mitchell put one two-inch steel nail into each of six test tubes. He added water to three of the test tubes and vinegar to the other three. In each test tube, he completely covered the nail with the same volume of liqui... | 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/3680 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is stronger in Pair 1.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 2."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | 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.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. |
train/3681 | 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 smaller 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 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,... | Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magnitude of the magnetic force between them is smaller.
There is a greater distance between the magnets in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is smaller in Pair 1 than in Pair 2. |
train/3682 | What is the expected ratio of offspring with red fruit to offspring with yellow fruit? Choose the most likely ratio. | [
"2:2",
"4:0",
"3:1",
"1:3",
"0:4"
] | 4 | In a group of tomato plants, some individuals have red fruit and others have yellow fruit. In this group, the gene for the fruit color trait has two alleles. The allele for red fruit (F) is dominant over the allele for yellow fruit (f).
This Punnett square shows a cross between two tomato plants. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring with red fruit or yellow fruit, consider whether each phenotype is the dominant or recessive allele's version of the fruit color trait. The question tells you that the F allele, which is for red fruit, is dominant over the f allele, which is for yell... |
train/3683 | What is the capital of North Carolina? | [
"Philadelphia",
"Raleigh",
"Charlotte",
"Jackson"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Raleigh is the capital of North Carolina. | ||
train/3684 | Which property do these four objects have in common? | [
"flexible",
"smooth",
"slippery"
] | 1 | Select the best answer. | closed choice | grade5 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A smooth object is not scratchy or rough. All four objects are smooth.
A flexible object can be folded or bent without breaking easily. The helium balloons and the silk tie are flexible, but the trombone is not.
A slippery object is hard to hold onto... |
train/3685 | What is the capital of Arizona? | [
"Tucson",
"Fairbanks",
"Phoenix",
"Boise"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Phoenix is the capital of Arizona. | ||
train/3686 | Select the organism in the same genus as the black howler. | [
"Alouatta palliata",
"Castor canadensis",
"Ovis canadensis"
] | 0 | This organism is a black howler. Its scientific name is Alouatta caraya. | 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 black howler's scientific name is Alouatta caraya. The first word of its scientific name is Alouatta.
Ovis canadensis is in the genus Ovis. The first word of its scientific name is Ovis. So, Ovis canadensis and Alouatta caraya are not in the same genus.
Alouatta palliata is in the genus Alouatta. The first word of it... |
train/3687 | Select the statement that is true about Sydney's average monthly precipitation. | [
"Less precipitation falls in February than in November.",
"Each month has about the same amount of precipitation.",
"More precipitation falls in June than in December."
] | 2 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Sydney, look at the graph.
Choice "Feb" is incorrect.
Choice "Jun" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
Choice "Less precipitation falls in February than in November." is incorrect.
The average precipitation in February is higher, not lower,... |
train/3688 | Which statement describes the Great Basin Desert ecosystem? | [
"It has warm summers and mild winters.",
"It has dry, thin soil."
] | 1 | Figure: Great Basin Desert.
The Great Basin Desert is a cold desert ecosystem in the western United States that covers much of Nevada. This desert also covers parts of Utah, California, and Idaho. | closed choice | grade8 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A 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 following statements describe the Great Basin Desert ecosystem: a small amount of rain or snow, dry, thin soil, and long, cold winters. It has a small amount of... |
train/3689 | During this time, thermal energy was transferred from () to (). | [
"the surroundings . . . each cake",
"each cake . . . the surroundings"
] | 1 | Emilio baked two identical cakes. When he took them out of the oven, he left one cake in its pan and took the other cake out of its pan to put it on a plate. This table shows how the temperature of each cake changed over 5minutes. | 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 cake decreased, which means that the thermal energy of each cake decreased. So, thermal energy was transferred from each cake to the surroundings. |
train/3690 | Select the organism in the same genus as the bush honeysuckle. | [
"Camellia sasanqua",
"Sarracenia purpurea",
"Lonicera japonica"
] | 2 | This organism is a bush honeysuckle. Its scientific name is Lonicera maackii. | closed choice | grade5 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A bush honeysuckle's scientific name is Lonicera maackii. The first word of its scientific name is Lonicera.
Sarracenia purpurea is in the genus Sarracenia. The first word of its scientific name is Sarracenia. So, Sarracenia purpurea and Lonicera maackii are not in the same genus.
Lonicera japonica is in the genus Loni... |
train/3691 | Which i in row C? | [
"the library",
"the grocery store",
"the police department",
"the park"
] | 2 | closed choice | grade3 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The police department is in row C. | |
train/3692 | 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 stronger in Pair 2.",
"The magnetic force is stronger 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/3693 | 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."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | 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,... | 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 1 than in Pair 2. So, the magnit... |
train/3694 | What is the capital of Colorado? | [
"Tucson",
"Denver",
"Saint Louis",
"Cheyenne"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Denver is the capital of Colorado. | ||
train/3695 | Select the organism in the same genus as the agile wallaby. | [
"Macropus giganteus",
"Ovis dalli",
"Ovis aries"
] | 0 | This organism is an agile wallaby. Its scientific name is Macropus agilis. | 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 agile wallaby's scientific name is Macropus agilis. The first word of its scientific name is Macropus.
Ovis dalli is in the genus Ovis. The first word of its scientific name is Ovis. So, Ovis dalli and Macropus agilis are not in the same genus.
Ovis aries is in the genus Ovis. The first word of its scientific name i... |
train/3696 | What is the name of the colony shown? | [
"Maryland",
"Connecticut",
"Georgia",
"Iowa"
] | 0 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Maryland. | ||
train/3697 | In this experiment, which were part of a control group? | [
"the cups that did not get cardboard sleeves",
"the cups that got cardboard sleeves"
] | 0 | The passage below describes an experiment.
Samuel drank coffee out of a paper cup. He remembered that his coffee shop had cardboard sleeves for their coffee cups. He wondered if using a sleeve would help keep the coffee warm.
Samuel placed a cardboard sleeve on each of three paper cups. He left three other cups withou... | 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, Samuel investigated whether adding cardboard sleeves to coffee cups affects how quickly coffee cools. There were no sleeves on the cups that did not get cardboard sleeves. So, they were part of a control group. |
train/3698 | Which material is this stop sign made of? | [
"cotton",
"metal"
] | 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 stop sign.
The stop sign is made of metal.
Metal is a tough material. It does not break down in rainy or windy weather. This makes metal a great material for street signs. | |
train/3699 | Which country is highlighted? | [
"Saint Vincent and the Grenadines",
"the Dominican Republic",
"Trinidad and Tobago",
"Grenada"
] | 3 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Grenada. |
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