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train/1100 | What is the capital of Rhode Island? | [
"Boston",
"Milwaukee",
"Newport",
"Providence"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | ||
train/1101 | Which property do these three objects have in common? | [
"salty",
"yellow",
"hard"
] | 2 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A hard object does not change shape when pressed or squeezed. All three objects are hard.
Yellow is a color.
This color is yellow. The bracelet is yellow, but the shield is not.
Potato chips have a salty taste. The rainbow sucker is not salty.
The pr... |
train/1102 | Does Hevea brasiliensis have cells that have a nucleus? | [
"yes",
"no"
] | 0 | This organism is Hevea brasiliensis. It is a member of the plant kingdom.
Hevea brasiliensis is commonly called a rubber tree. Rubber trees make a white liquid called latex. Rubber trees use latex for protection. Latex has a bad taste and can be poisonous to some animals. So, the latex helps to stop animals from eating... | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Hevea brasiliensis is a plant. Plant cells have a nucleus. |
train/1103 | 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/1104 | Which animal's body is better adapted for protection against a predator with sharp teeth? | [
"ring-necked pheasant",
"queen scallop"
] | 1 | Painted turtles are adapted to protect themselves from a predator with sharp teeth. They have hard outer shells covering their bodies. A can pull its head and legs into its shell when attacked.
Figure: painted turtle. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the painted turtle.
The painted turtle has a hard outer shell. Its body is adapted for protection against a predator with sharp teeth. The hard shell makes it difficult for predators to hurt or kill the painted turtle.
Now look at each animal. Figure out which animal has a similar adaptation.
The... |
train/1105 | 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"
] | 1 | The diagram below shows a solution with one solute. Each solute particle is represented by a purple 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 | grade8 | 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 2 solute particles on the left side of the membrane and 6 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there... |
train/1106 | How long do Nile crocodile eggs stay buried in the sand? | [
"three months",
"three days"
] | 0 | Read the passage about Nile crocodiles.
Nile crocodiles are big and scary. But they're also good parents! The mother crocodile lays her eggs in a hole in the sand. Then, for three months, she watches over them and keeps them safe. The father helps, too.
When the eggs are ready to hatch, the babies inside make special n... | closed choice | grade2 | language science | reading-comprehension | Independent reading comprehension | Read and understand informational passages | Look at the passage. It tells you how long Nile crocodile eggs stay buried in the sand.
Nile crocodiles are big and scary. But they're also good parents! The mother crocodile lays her eggs in a hole in the sand. Then, for three months, she watches over them and keeps them safe. The father helps, too. | |
train/1107 | What is the name of the colony shown? | [
"Illinois",
"West Virginia",
"Massachusetts",
"Ohio"
] | 2 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Massachusetts.
The Massachusetts Colony included land that would later become the state of Maine. Maine was never its own colony. | ||
train/1108 | 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 the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | 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 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni... |
train/1109 | Which continent is highlighted? | [
"Asia",
"Antarctica",
"North America",
"Europe"
] | 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 Europe. | |
train/1110 | Which property do these two objects have in common? | [
"stretchy",
"blue"
] | 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 stretchy object gets longer when you pull on it. The binder is not stretchy.
Blue is a color.
This color is blue. Both objects are blue.
The property that both objects have in common is blue. |
train/1111 | Is a pair of dice a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid"
] | 2 | closed choice | grade3 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | A pair of dice is a solid. A solid has a size and shape of its own.
When you roll a pair of dice, the dice have a shape of their own. They are still cubes when they stop rolling. | |
train/1112 | Does Hydra vulgaris have cells that have a nucleus? | [
"yes",
"no"
] | 0 | This organism is Hydra vulgaris. It is a member of the animal kingdom.
Hydra vulgaris can make new offspring through a process called budding. A small H. vulgaris can start to grow from the side of its parent. When the baby H. vulgaris is fully grown, it will split off from its parent. | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Hydra vulgaris is an animal. Animal cells have a nucleus. |
train/1113 | Which of the following could Justine's test show? | [
"whether she added enough nutrients to help the bacteria produce 20% more insulin",
"whether producing more insulin would help the bacteria grow faster",
"whether different types of bacteria would need different nutrients to produce insulin"
] | 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/1114 | Which of the following could Noah's test show? | [
"if the sample fabric would absorb one drop of water in less than one second",
"how long it would take the sample fabric to dry after it absorbed one drop of water",
"how much athletes would sweat in the fabric"
] | 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 | 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/1115 | Which better describes the Buffalo Gap National Grassland ecosystem? | [
"It has hot summers. It also has soil that is rich in nutrients.",
"It has a small amount of rain. It also has dry, thin soil."
] | 0 | Figure: Buffalo Gap National Grassland.
Buffalo Gap National Grassland is a prairie grassland ecosystem in southwestern South Dakota. | 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 prairie grassland is a type of ecosystem. Prairie grasslands have the following features: hot summers and cool winters, a medium amount of rain, and soil that is rich in nutrients. So, the Buffalo Gap National Grassland has hot summers. It also has soil that is rich in nutrients. |
train/1116 | What is the capital of New Mexico? | [
"Denver",
"Santa Fe",
"Harrisburg",
"Albuquerque"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Santa Fe is the capital of New Mexico. | ||
train/1117 | Which solution has a higher concentration of pink particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 1 | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the pink particles represent the solute. To figure out which solution has a higher concentration of pink particles, look at both the number of pink particles and the volume of the solvent in each container.
Use the concentration formula to find the number of pink particles per milliliter.
... |
train/1118 | Which animal's skin is better adapted to hurt an attacking predator? | [
"scrub hare",
"blowfish"
] | 1 | Thorny devils have sharp spines covering much of their skin. The skin of the is adapted to hurt an attacking predator.
Figure: thorny devil. | 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 thorny devil.
The thorny devil has sharp spines on its skin. Its skin is adapted to hurt an attacking predator. The spines can harm a predator that tries to bite the thorny devil.
Now look at each animal. Figure out which animal has a similar adaptation.
The blowfish has sharp spines on its s... |
train/1119 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 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 the two samples has the same mass, but the particles in sample A have a higher average speed than the particles in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sampl... |
train/1120 | Select the organism in the same species as the black-headed gull. | [
"Procambarus clarkii",
"Chroicocephalus serranus",
"Chroicocephalus ridibundus"
] | 2 | This organism is a black-headed gull. Its scientific name is Chroicocephalus ridibundus. | 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 black-headed gull's scientific name is Chroicocephalus ridibundus.
Chroicocephalus ridibundus is in the same genus as Chroicocephalus serranus, but they are not in the same species.
Organisms in the same species have the same scientific names. Chroicocephalus ridibundus and Chroicocephalus serranus are different spec... |
train/1121 | Which of these states is farthest north? | [
"Indiana",
"New Hampshire",
"Rhode Island",
"Louisiana"
] | 1 | 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. New Hampshire is farthest north. | |
train/1122 | Which continent is highlighted? | [
"South America",
"Antarctica",
"Europe",
"Australia"
] | 0 | closed choice | grade7 | social science | geography | Physical Geography | Oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is South America. | |
train/1123 | Which country is highlighted? | [
"Samoa",
"the Marshall Islands",
"the Federated States of Micronesia",
"Papua New Guinea"
] | 2 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | ||
train/1124 | In this food chain, the algae is a producer. Why? | [
"It eats another living thing.",
"It makes its own food."
] | 1 | This diagram shows a food chain from Lake Superior, a freshwater ecosystem on the border of the United States and Canada. | closed choice | grade3 | natural science | biology | Ecosystems | Identify roles in food chains | Every living thing needs food to stay alive. Living things get their food in different ways. A food chain shows how living things in an ecosystem get their food.
Producers make their own food. Many producers use carbon dioxide, water, and sunlight to make sugar. This sugar is food for the producer.
Consumers eat other ... | In this food chain, the algae is a producer because it makes its own food. The algae uses carbon dioxide, water, and sunlight to make its own food. |
train/1125 | 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 2.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different 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,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni... |
train/1126 | What is the capital of New Mexico? | [
"Santa Fe",
"Jackson",
"Albuquerque",
"Arlington"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Santa Fe is the capital of New Mexico. | ||
train/1127 | 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/1128 | Select the mammal below. | [
"giraffe",
"cane toad"
] | 0 | Mammals have hair or fur and feed their young milk. A red howler is an example of a mammal. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A giraffe is a mammal. It has hair and feeds its young milk.
Giraffes eat mostly leaves that are too high up for other animals to reach.
A cane toad is an amphibian. It has moist skin and begins its life in water.
Toads do not have teeth! They swallow their food whole. |
train/1129 | Is a door 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 door is a solid. A solid has a size and shape of its own.
When you open or close a door, it keeps its shape. | |
train/1130 | Which is the main persuasive appeal used in this ad? | [
"pathos (emotion)",
"ethos (character)",
"logos (reason)"
] | 2 | closed choice | grade7 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to logos, or reason. It mentions the results of studies and focuses on practical benefits of the product. | |
train/1131 | Which country is highlighted? | [
"Kiribati",
"the Federated States of Micronesia",
"the Marshall Islands",
"Palau"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | ||
train/1132 | Which of the following was a dependent variable in this experiment? | [
"the number of Giardia that remained in the water",
"the length of the filtering straw"
] | 0 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Giardia is a microscopic parasite that lives in water and can infect humans. Dr. Lynch designed a drinking straw that contained a filter to remove Giardia from water. Dr. Lynch wanted to know if a longer filte... | 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/1133 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. |
train/1134 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... |
train/1135 | Identify the question that Darell'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.
Darell put one two-inch steel nail into each of six test tubes. He added water to three of the test tubes and vinegar to the other three. In each test tube, he completely covered the nail with the same volume of liquid.... | closed choice | 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/1136 | Which is this organism's common name? | [
"Cassiopea andromeda",
"upside-down jellyfish"
] | 1 | This organism is Cassiopea andromeda. It is also called an upside-down jellyfish. | 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,... | Cassiopea andromeda is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Cassiopea andromeda is the organism's scientific name. So, you know that upside-down jellyfish is the common name. |
train/1137 | Which country is highlighted? | [
"New Zealand",
"Australia",
"Solomon Islands",
"Papua New Guinea"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Australia.
Is Australia a country or a continent?
Both! Australia is a country in Oceania, a region made up of many lands and islands in the Pacific Ocean. Many people say that Australia is the world's smallest continent. But some people call Oceania a continent instead. | ||
train/1138 | Which animal is also adapted for flight? | [
"brahminy kite",
"nilgai"
] | 0 | Flying foxes live in the forests of Southeast Asia and Australia. The has wings. It is adapted for flight.
Figure: flying fox. | 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.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the flying fox.
The flying fox has large, powerful wings. It is adapted for flight. Long, powerful wings help the flying fox travel long distances by air.
Now look at each animal. Figure out which animal has a similar adaptation.
The brahminy kite has long, powerful wings. It is adapted for fligh... |
train/1139 | What is the capital of Michigan? | [
"Lansing",
"Grand Rapids",
"San Francisco",
"Portland"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Lansing is the capital of Michigan. | ||
train/1140 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"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 | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in sample 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/1141 | Complete the sentence.
The Andean Volcanic Belt formed at a () boundary. | [
"convergent",
"divergent",
"transform"
] | 0 | Read the passage and look at the picture.
The Andean Volcanic Belt spans the west coast of South America. This volcanic belt began to form when the Nazca Plate moved toward and subducted, or sank, below the South American Plate.
Nineteen of the volcanoes in the Andean Volcanic Zone are in Colombia. Some of these volcan... | closed choice | grade8 | natural science | earth-science | Plate tectonics | Describe tectonic plate boundaries around the world | The outer layer of Earth is broken up into many pieces called tectonic plates, or simply plates. The breaks between plates are called plate boundaries. Plate boundaries are classified by the way the plates are moving relative to each other:
At a divergent boundary, two plates are moving away from each other.
At a trans... | To figure out what type of plate boundary formed the Andean Volcanic Belt, you need to know how the tectonic plates interacted. To find this out, read the passage carefully.
The Andean Volcanic Belt spans the west coast of South America. This volcanic belt began to form when the Nazca Plate moved toward and subducted, ... |
train/1142 | Which solution has a higher concentration of green particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each green ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per millilit... |
train/1143 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | 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,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni... |
train/1144 | What is the capital of South Dakota? | [
"Pierre",
"Topeka",
"Boston",
"Rapid City"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Pierre is the capital of South Dakota. | ||
train/1145 | What is the probability that a fruit fly produced by this cross will be homozygous dominant for the antenna type gene? | [
"0/4",
"1/4",
"4/4",
"2/4",
"3/4"
] | 1 | This passage describes the antenna type trait in fruit flies:
Most fruit flies have a pair of antennae on their head. But, some flies appear to have an extra pair of legs on their head instead! These flies have a mutation, or change, in a gene that affects body development. This mutation makes the cells in the fly's he... | 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/1146 | Based on the timeline, which statement is true? | [
"The Boston Massacre was the first battle of the Revolutionary War.",
"The First Continental Congress met before the Revolutionary War began."
] | 1 | Between 1775 and 1783, Americans fought the British in the Revolutionary War. Look at the timeline of events in the years before the war. Then answer the question. | closed choice | grade8 | social science | us-history | The American Revolution | The Revolutionary War: preparing for war | ||
train/1147 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. |
train/1148 | What is the capital of Iowa? | [
"Saint Paul",
"Des Moines",
"Madison",
"Jefferson City"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Des Moines is the capital of Iowa. | ||
train/1149 | Why might grooming eggs increase the reproductive success of a female European earwig? Complete the claim below that answers this question and is best supported by the passage.
Grooming eggs increases the chances that (). | [
"the female will spend time near her offspring",
"the female will produce more eggs",
"the female's offspring will survive"
] | 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.
European earwigs are small insects that raise their offspring in cool, moist soil. After earwigs mate, females lay their eggs in underground nests. ... | 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 grooming eggs. Use this information to determine why this behavior can increase the reproductive success of the female European earwig.
Choice "European earwigs are small insects that raise their offspring in cool, moist soil. After earwigs mate, females lay... |
train/1150 | Which statement describes the Oglala National Grassland ecosystem? | [
"It has hot summers and cool winters.",
"It has heavy rain.",
"It has cold winters and cool summers."
] | 0 | Figure: Oglala National Grassland.
Oglala National Grassland is a prairie grassland ecosystem in northwestern Nebraska. This grassland contains large rock formations called badlands. | 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 prairie grassland is a type of ecosystem. Prairie grasslands have the following features: hot summers and cool winters, a medium amount of rain, and soil that is rich in nutrients. So, the following statement describes the Oglala National Grassland ecosystem: hot summers and cool winters, a medium amount of rain, and... |
train/1151 | Which material is this bridge made of? | [
"concrete",
"linen"
] | 0 | closed choice | grade2 | natural science | physics | Materials | Identify multiple materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood. | Look at the picture of the bridge.
The bridge is made of two different materials. The surface is concrete. The rest of the bridge is made of metal.
Concrete and metal are good materials to build bridges with. Both materials are strong. They hold up well in cold or rainy weather. | |
train/1152 | Which ocean is highlighted? | [
"the Atlantic Ocean",
"the Southern Ocean",
"the Arctic Ocean",
"the Indian Ocean"
] | 2 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Arctic Ocean. | |
train/1153 | Select the organism in the same genus as the domestic cat. | [
"Felis chaus",
"Lynx rufus",
"Lynx lynx"
] | 0 | This organism is a domestic cat. Its scientific name is Felis catus. | 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 domestic cat's scientific name is Felis catus. The first word of its scientific name is Felis.
Lynx lynx is in the genus Lynx. The first word of its scientific name is Lynx. So, Lynx lynx and Felis catus are not in the same genus.
Lynx rufus is in the genus Lynx. The first word of its scientific name is Lynx. So, Lyn... |
train/1154 | Based on the maps above, what was true about the Southern Colonies compared to the other colonies? | [
"The Southern Colonies had better soil than New England.",
"The Southern Colonies had worse soil than New England.",
"The Southern Colonies had a shorter growing season than the Middle Colonies."
] | 0 | The two maps below give information about the colonial regions of North America. The first map shows how good the soil was for growing crops. The second map shows how many months out of the year had good weather for growing crops. Look at the maps. Then answer the question below. | closed choice | grade5 | social science | us-history | English colonies in North America | Southern colonies: economy and slavery | Look at the maps.
These choices are correct:
The Southern Colonies had better soil than New England.
In the first map, most of the soil in the Southern Colonies is labeled "most fertile." Meanwhile, New England is labeled as "least fertile." Fertile soil is good for growing crops. So, the Southern colonies had better,... | |
train/1155 | What can Logan and Vicky trade to each get what they want? | [
"Vicky can trade her broccoli for Logan's oranges.",
"Logan can trade his tomatoes for Vicky's broccoli.",
"Vicky can trade her almonds for Logan's tomatoes.",
"Logan can trade his tomatoes for Vicky's carrots."
] | 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.
Logan and Vicky open their lunch boxes in the school cafeteria. Neither Logan nor Vicky 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.
Logan wants broccoli. Vicky 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/1156 | Which country is highlighted? | [
"the Marshall Islands",
"Nauru",
"Kiribati",
"Solomon Islands"
] | 2 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Kiribati. | ||
train/1157 | 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.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/1158 | Which of the following organisms is the decomposer in this food web? | [
"black crappie",
"bacteria",
"rotifer"
] | 1 | Below is a food web from Little Rock Lake, a freshwater lake ecosystem in Wisconsin.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade5 | natural science | biology | Ecosystems | Interpret food webs I | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Decomposers help break down dead organisms into simpler matter, such as nutrients. These nutrients can then help plants and other organisms grow. In a food web, there is an arrow pointing from another organism to a decomposer. There are no arrows pointing from a decomposer to another organism.
The rotifer has arrows po... |
train/1159 | Which animal's neck is also adapted for hunting prey while keeping the rest of its body still? | [
"great egret",
"northern pintail"
] | 0 | Great blue 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: great blue 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 great blue heron.
The great blue heron has a long neck. Its neck is adapted for hunting prey while keeping the rest of its body still. This allows the great blue heron to grab the prey without scaring it away.
Now look at each animal. Figure out which animal has a similar adaptation.
The grea... |
train/1160 | What can Jamal and Francesca trade to each get what they want? | [
"Jamal can trade his tomatoes for Francesca's carrots.",
"Francesca can trade her broccoli for Jamal's oranges.",
"Francesca can trade her almonds for Jamal's tomatoes.",
"Jamal can trade his tomatoes for Francesca'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.
Jamal and Francesca open their lunch boxes in the school cafeteria. Neither Jamal nor Francesca got everything that they wanted. ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Jamal wants broccoli. Francesca 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/1161 | Which bird's beak is also adapted to crack large, hard nuts? | [
"hoopoe",
"African gray parrot"
] | 1 | Hyacinth macaws live in the rain forests of South America. They eat large seeds and nuts. The shape of the 's beak is adapted to crack open large, hard nuts.
Figure: hyacinth macaw. | 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 hyacinth macaw.
The hyacinth macaw has a thick hooked beak. Its beak is adapted to crack large, hard nuts. The hyacinth macaw uses its thick beak to crack the shell of a nut by squeezing it. The hooked shape of the beak can help the bird hold the nut in place while cracking it.
Now look at ea... |
train/1162 | Which property do these three objects have in common? | [
"fuzzy",
"bumpy",
"yellow"
] | 1 | Select the best answer. | closed choice | grade3 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A bumpy object is covered in lumps and bumps. All three objects are bumpy.
Yellow is a color.
This color is yellow. The tortoise shell and the pretzel are not yellow.
A fuzzy object is covered in soft hair. The tortoise shell and the pineapple are no... |
train/1163 | Select the organism in the same genus as the Sasanqua camellia. | [
"Lonicera maackii",
"Camellia japonica",
"Trametes versicolor"
] | 1 | This organism is a Sasanqua camellia. Its scientific name is Camellia sasanqua. | 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 Sasanqua camellia's scientific name is Camellia sasanqua. The first word of its scientific name is Camellia.
Lonicera maackii is in the genus Lonicera. The first word of its scientific name is Lonicera. So, Lonicera maackii and Camellia sasanqua are not in the same genus.
Trametes versicolor is in the genus Trametes.... |
train/1164 | Which animal's feet are also adapted for digging? | [
"Weddell seal",
"six-banded armadillo"
] | 1 | s are found in parts of Europe. They dig and live in burrows. The feet of the are adapted for digging.
Figure: Alpine marmot. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
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 Alpine marmot.
The Alpine marmot has long, straight claws. Its feet are adapted for digging. The Alpine marmot 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, straight cla... |
train/1165 | Which animal's skin is better adapted for protection against a predator with sharp teeth? | [
"ground pangolin",
"collared dove"
] | 0 | Southern three-banded armadillos are adapted to defend their bodies against a predator with sharp teeth. They have hard scales covering much of their skin. When frightened, the can roll into a ball to protect the soft parts of its body.
Figure: southern three-banded armadillo. | 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 southern three-banded armadillo.
The southern three-banded armadillo has hard scales on its skin. Its skin is adapted for protection against a predator with sharp teeth. The scales make it difficult for predators to hurt or kill the southern three-banded armadillo.
Now look at each animal. Fi... |
train/1166 | Based on the continuum scale, which blood type is most common? | [
"O+",
"AB-"
] | 0 | This continuum scale shows how common different blood types are. | closed choice | grade6 | language science | writing-strategies | Visual elements | Read graphic organizers | A graphic organizer is a chart or picture that shows how ideas, facts, or topics are related to one another.
When you read, look for graphic organizers included in the text. You can use these images to find key information. You can also create your own graphic organizers with information that you've read. Doing this ca... | A continuum scale compares things by ordering them along a line. This continuum scale shows how common different blood types are.
Less common blood types are shown to the left. More common blood types are shown to the right. O+ is shown farther right than any other blood type. So, the most common blood type is O+. |
train/1167 | Which material is this box made of? | [
"clay",
"metal"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Identify multiple materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood. | Look at the picture of the box.
The jewelry box is made of two different materials. The box is made of wood, and the hinges are metal. | |
train/1168 | What is the capital of Oregon? | [
"Salem",
"Helena",
"Knoxville",
"Honolulu"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Salem is the capital of Oregon. | ||
train/1169 | Based on the time line, when did people start playing polo? | [
"before surfing",
"before sumo wrestling"
] | 1 | This time line shows ancient sports that are still popular today. It gives each sport's likely place and date of origin. | closed choice | grade6 | language science | writing-strategies | Visual elements | Read graphic organizers | A graphic organizer is a chart or picture that shows how ideas, facts, or topics are related to one another.
When you read, look for graphic organizers included in the text. You can use these images to find key information. You can also create your own graphic organizers with information that you've read. Doing this ca... | A time line shows the order of events by placing them along a line. This time line shows ancient sports that are still popular today. It gives each sport's likely place and date of origin.
Look at how the events are ordered on the time line. Sports that were invented earlier are shown to the left. Sports that were inve... |
train/1170 | Is a spoon a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid"
] | 2 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter i... | A spoon is a solid. You can bend a spoon. But it will still have a size and shape of its own. | |
train/1171 | What is the probability that a Syrian hamster produced by this cross will be heterozygous for the fur length gene? | [
"4/4",
"3/4",
"0/4",
"1/4",
"2/4"
] | 4 | In a group of Syrian hamsters, some individuals have short fur and others have long fur. In this group, the gene for the fur length trait has two alleles. The allele for long fur (f) is recessive to the allele for short fur (F).
This Punnett square shows a cross between two Syrian hamsters. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate 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/1172 | Which property do these three objects have in common? | [
"smooth",
"scratchy",
"sticky"
] | 0 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A scratchy object is rough and itchy against your skin. None of the objects are scratchy.
A smooth object is not scratchy or rough. All three objects are smooth.
A sticky object can attach or stick to other things. None of the objects are sticky.
The... |
train/1173 | Select the organism in the same genus as the Victoria crowned pigeon. | [
"Larus livens",
"Goura cristata",
"Cyanocitta stelleri"
] | 1 | This organism is a Victoria crowned pigeon. Its scientific name is Goura victoria. | 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 Victoria crowned pigeon's scientific name is Goura victoria. The first word of its scientific name is Goura.
Goura cristata is in the genus Goura. The first word of its scientific name is Goura. So, Goura cristata and Goura victoria are in the same genus.
Larus livens is in the genus Larus. The first word of its scie... |
train/1174 | What is the name of the colony shown? | [
"New Jersey",
"Pennsylvania",
"Delaware",
"Connecticut"
] | 3 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Connecticut. | ||
train/1175 | According to the timeline, during which historical period did the U.S.-Mexican War occur? | [
"the early republic period",
"the Civil War period",
"the antebellum period"
] | 2 | In the following questions, you will learn about the U.S.-Mexican War (1846–1848), sometimes called the Mexican-American War. You will learn about what caused the war, how it was fought, and what happened after the war was over.
The following timeline shows the U.S.-Mexican War and some other historical events that too... | closed choice | grade8 | social science | us-history | The Antebellum period | The U.S.-Mexican War | Look at the timeline.
Find the box that shows the U.S.-Mexican War. Look at the color of that box, and then look at the legend. According to the legend, the U.S.-Mexican War took place during the antebellum period.
Why is it called the antebellum period?
In Latin, the word ante means "before," and the word bellum means... | |
train/1176 | 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 | 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 fluoromethane is an elementary substance or a compound.
In this model, each ball is labeled with C for carbon, H for hydrogen, or F for fluorine. So, the model shows you that fluoromethane is made of three chemical elements bonded together.... |
train/1177 | Which animal is also adapted to be camouflaged in a sandy desert? | [
"horned viper",
"Amazon milk frog"
] | 0 | Flat-tail horned lizards live in the deserts of North America. The is adapted to be camouflaged in a sandy desert.
Figure: flat-tail horned lizard. | 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 flat-tail horned lizard.
The flat-tail horned lizard has sand-colored scales covering its body. It is adapted to be camouflaged in a sandy desert. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The horned viper has sand-colore... |
train/1178 | What is the capital of Montana? | [
"Juneau",
"Saint Paul",
"Honolulu",
"Helena"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Helena is the capital of Montana. | ||
train/1179 | 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 | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. |
train/1180 | Is the following statement about our solar system true or false?
The largest planet is made mainly of ice. | [
"true",
"false"
] | 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 decide which planet is the largest, look at the volumes shown in the table and compare the exponents. Jupiter's volume has an exponent of 15, which is the largest out of all the planets.
Jupiter is made mainly of gas. So, the largest planet is made mainly of gas. |
train/1181 | Which specific humidity level was measured within the outlined area shown? | [
"5 grams of water vapor per kilogram of air",
"9 grams of water vapor per kilogram of air",
"14 grams of water vapor per kilogram of air"
] | 0 | The map below shows humidity in the lower atmosphere on May 3, 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 North America on that day.
Look at the map. Then, answer the question below.
Data source: United Sta... | 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 0 and 6 grams of water vapor per kilogram of air.
5 grams of water vapor per kilogram of... |
train/1182 | Identify the question that Cole's experiment can best answer. | [
"Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?",
"Does temperature affect how much bacteria can grow in liquid?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Cole mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He al... | 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/1183 | Select the reptile below. | [
"helmeted iguana",
"fruit bat"
] | 0 | Reptiles have scaly, waterproof skin. Most reptiles live on land. A Chinese alligator is an example of a reptile. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A fruit bat is a mammal. It has hair and feeds its young milk.
A helmeted iguana is a reptile. It has scaly, waterproof skin. |
train/1184 | Which of these states is farthest south? | [
"North Dakota",
"Washington",
"Wyoming",
"Maine"
] | 2 | 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 south arrow is pointing. Wyoming is farthest south. | |
train/1185 | Which better describes the Kaeng Krachan National Park ecosystem? | [
"It has year-round rain. It also has soil that is poor in nutrients.",
"It has cold winters. It also has soil that is rich in nutrients."
] | 0 | Figure: Kaeng Krachan National Park.
Kaeng Krachan National Park is a tropical rain forest ecosystem in western Thailand. | 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 tropical rain forest is a type of ecosystem. Tropical rain forests have the following features: year-round rain and warm temperatures, soil that is poor in nutrients, and many different types of organisms. So, Kaeng Krachan National Park has year-round rain. It also has soil that is poor in nutrients. |
train/1186 | What is the name of the colony shown? | [
"Maryland",
"South Carolina",
"Tennessee",
"Massachusetts"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Massachusetts.
The Massachusetts Colony included land that would later become the state of Maine. Maine was never its own colony. | ||
train/1187 | Which of the following fossils is older? Select the more likely answer. | [
"crocodile egg",
"feather"
] | 1 | This diagram shows fossils in an undisturbed sedimentary rock sequence. | closed choice | grade8 | natural science | earth-science | Fossils | Compare ages of fossils in a rock sequence | A fossil is the preserved evidence of an ancient organism. Some fossils are formed from body parts such as bones or shells. Other fossils, such as footprints or burrows, are formed from traces of an organism's activities.
Fossils are typically found in sedimentary rocks. Sedimentary rocks usually form in layers. Over t... | Look again at the fossils in the rock sequence diagram.
Compare the positions of these fossils to determine which one is older:
The feather fossil is in a deeper layer in the rock sequence than the crocodile egg fossil. So, the feather fossil is most likely older than the crocodile egg fossil. |
train/1188 | Which of the following could Alec's test show? | [
"if the weather station would work when the temperature was 50°C",
"how well the weather station would work when it was windy"
] | 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/1189 | 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."
] | 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 | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... |
train/1190 | Which of the following could Savannah's test show? | [
"if the new turbine could turn easily",
"how much the new turbine would weigh",
"whether the new turbine could produce 10% more electricity"
] | 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/1191 | What is the name of the colony shown? | [
"Georgia",
"Iowa",
"New Jersey",
"Connecticut"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is New Jersey. | ||
train/1192 | Which continent is highlighted? | [
"Asia",
"South America",
"Antarctica",
"North America"
] | 3 | closed choice | grade7 | social science | geography | Physical Geography | Oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is North America. | |
train/1193 | Which country is highlighted? | [
"Grenada",
"Cuba",
"The Bahamas",
"Haiti"
] | 2 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is The Bahamas. | ||
train/1194 | Identify the question that Shelley's experiment can best answer. | [
"Does fabric turn darker when soaked in a mixture of black dye and water for 15 minutes compared to 30 minutes?",
"Does linen fabric turn darker than cotton fabric when soaked in a mixture of black dye and water?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Shelley prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Shelley soaked white linen fabric squares in five of the buckets, and white cotton fabric squares in the oth... | 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/1195 | Is a computer processor a mineral? | [
"yes",
"no"
] | 1 | A computer processor has the following properties:
solid
made in a factory
no fixed crystal structure
made of silicon, plastic, and metals | 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... | A computer processor does not have all the properties of a mineral. So, a computer processor is not a mineral. |
train/1196 | What is the expected ratio of offspring with white wool to offspring with black wool? Choose the most likely ratio. | [
"2:2",
"4:0",
"3:1",
"0:4",
"1:3"
] | 1 | In a group of sheep, some individuals have white wool and others have black wool. In this group, the gene for the wool color trait has two alleles. The allele for white wool (L) is dominant over the allele for black wool (l).
This Punnett square shows a cross between two sheep. | 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 white wool or black wool, consider whether each phenotype is the dominant or recessive allele's version of the wool color trait. The question tells you that the L allele, which is for white wool, is dominant over the l allele, which is for black... |
train/1197 | Which country is highlighted? | [
"Haiti",
"Cuba",
"The Bahamas",
"Jamaica"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Cuba.
Does Cuba have any territorial disputes?
Cuba claims to own Guantanamo Bay Naval Base, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States controls the area and uses it as a military base and prison. A treaty... | ||
train/1198 | Which animal is also adapted to be camouflaged in the snow? | [
"skunk",
"ptarmigan"
] | 1 | Arctic wolves live in the Canadian Arctic and Greenland. The is adapted to be camouflaged in the snow.
Figure: Arctic wolf. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the Arctic wolf.
This Arctic wolf has white fur covering its body. It is adapted to be camouflaged in the snow. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
During the winter, the ptarmigan has white feathers covering its body. ... |
train/1199 | What is the name of the colony shown? | [
"Pennsylvania",
"Illinois",
"West Virginia",
"Rhode Island"
] | 0 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Pennsylvania. |
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