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train/5700 | Which better describes the Rainbow Reef ecosystem? | [
"It has bright sunlight. It also has shallow water.",
"It has water with not much salt. It also has only a few types of organisms."
] | 0 | Figure: Rainbow Reef.
Rainbow Reef is a tropical coral reef ecosystem near Fiji, a group of islands in the southern Pacific Ocean. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A tropical coral reef is a type of ecosystem. Tropical coral reefs have the following features: shallow, salty water, bright sunlight, and many different types of organisms. So, Rainbow Reef has bright sunlight. It also has shallow water. |
train/5701 | Which animal's legs are also adapted for wading? | [
"magnificent frigatebird",
"demoiselle crane"
] | 1 | Shoebills live near marshes and lakes in Africa. They eat fish, frogs, and small reptiles that live in shallow water. Shoebills hunt their prey by walking through water, or wading.
The 's legs are adapted for wading. They are lightweight and keep the bird's body above the water.
Figure: shoebill. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the shoebill.
Long legs help the shoebill keep its body above the surface of the water while wading. Thin legs are easier to move through the water.
Now look at each animal. Figure out which animal has a similar adaptation.
The demoiselle crane has long, thin legs. Its legs are adapted for wading... |
train/5702 | Which solution has a higher concentration of pink particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 0 | The diagram below is a model of two solutions. Each pink 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 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/5703 | What is the direction of this push? | [
"toward her hands",
"away from her hands"
] | 1 | A mom takes her baby for a walk. She uses a force to push the stroller forward with her hands. | closed choice | grade4 | natural science | physics | Force and motion | Identify directions of forces | A force is a push or a pull that one object applies to another. Every force has a direction.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The mom pushes the stroller. The direction of the push is away from her hands. |
train/5704 | Which of the following statements describess living in an independent city-state? | [
"I live by myself in the wilderness.",
"I vote for a president that rules over many different cities.",
"All the decisions about my city are made by a faraway emperor.",
"My city rules itself and is not part of a larger country."
] | 3 | Athens was one of the most powerful independent city-states in ancient Greece. Look at the definitions below. Then answer the question. | closed choice | grade6 | social science | world-history | Greece | Classical Athens: geography and society | Look at the definitions.
Putting the definitions together, an independent city-state is a self-ruling city with its own government. So, a city-state rules itself and is not part of a larger country.
The ancient Greeks called a city-state a polis, which was the ancient Greek word for city. Today, the root word "polis" i... | |
train/5705 | Which property do these three objects have in common? | [
"soft",
"salty",
"slippery"
] | 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 soft object changes shape when pressed or squeezed. The cracker and the potato chips are not soft.
Potato chips have a salty taste. All three objects are salty.
A slippery object is hard to hold onto or stand on. The cracker and the potato chips ar... |
train/5706 | 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 2.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker 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 farther apart, the magnetic force between them is weaker.
The magnets in Pair 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2. |
train/5707 | Based on the arrows, which of the following organisms is a producer? | [
"bear sedge",
"grizzly bear"
] | 0 | Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade4 | natural science | biology | Ecosystems | Interpret food webs | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Producers do not eat other organisms. So, in a food web, producers do not have arrows pointing to them from other organisms.
The bear sedge does not have any arrows pointing to it. So, the bear sedge is a producer.
The grizzly bear has arrows pointing to it from the barren-ground caribou and the bilberry. So, the grizz... |
train/5708 | Which of these states is farthest north? | [
"Kansas",
"Louisiana",
"South Carolina",
"Florida"
] | 0 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Kansas is farthest north. | |
train/5709 | Which country is highlighted? | [
"Solomon Islands",
"the Marshall Islands",
"Australia",
"Kiribati"
] | 0 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Solomon Islands. | ||
train/5710 | What is the capital of Connecticut? | [
"Denver",
"Bridgeport",
"New Haven",
"Hartford"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Hartford is the capital of Connecticut. | ||
train/5711 | Which i in row A? | [
"the pond",
"the school",
"the fire department",
"the gas station"
] | 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 school is in row A. | |
train/5712 | Which three months have over 200millimeters of precipitation in Singapore? | [
"November, December, and January",
"August, September, and October",
"February, March, and 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 Singapore, look at the graph.
Choice "Jan" is incorrect.
Choice "Feb" is incorrect.
Choice "Mar" is incorrect.
Choice "Apr" is incorrect.
Choice "Aug" is incorrect.
Choice "Sep" is incorrect.
Choice "Oct" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.... |
train/5713 | Which of these continents does the equator intersect? | [
"Europe",
"Antarctica",
"South America"
] | 2 | closed choice | grade5 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The equator is the line at 0° latitude. It intersects South America. It does not intersect Europe or Antarctica. | |
train/5714 | Which animal's limbs are also adapted for swimming? | [
"Galapagos sea lion",
"giraffe"
] | 0 | Sea turtles live in the ocean. They cover long distances in search of food and places to nest.
The has four flippers for limbs. Its limbs are adapted for swimming.
Figure: sea turtle. | closed choice | 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 sea turtle.
The sea turtle uses its flippers to push itself through water. The flippers can also help it change direction while swimming.
Now look at each animal. Figure out which animal has a similar adaptation.
The Galapagos sea lion has flippers. Its limbs are adapted for swimming.
The gir... |
train/5715 | What is the name of the colony shown? | [
"Vermont",
"New York",
"Iowa",
"New Jersey"
] | 1 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony. | ||
train/5716 | Which of the following could Cody's test show? | [
"if the sample fabric would absorb one drop of water in less than one second",
"how much athletes would sweat in the fabric",
"how long it would take the sample fabric to dry after it absorbed one drop of water"
] | 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/5717 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 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 | 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,... | 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/5718 | What is the capital of North Carolina? | [
"Raleigh",
"Louisville",
"Little Rock",
"Charlotte"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Raleigh is the capital of North Carolina. | ||
train/5719 | Which country is highlighted? | [
"the Marshall Islands",
"the Federated States of Micronesia",
"Australia",
"Papua New Guinea"
] | 1 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | ||
train/5720 | Which part of the apple tree do we usually eat? | [
"the leaves",
"the root",
"the fruit"
] | 2 | People use apple trees for food. We usually eat the part of this plant that contains the seeds. It grows from a pollinated flower. | closed choice | grade4 | natural science | biology | Plants | Classify fruits and vegetables as plant parts | The fruits and vegetables we eat are parts of plants! Plants are made up of different structures. The different structures carry out important functions.
The roots take in water and nutrients from the soil. They also hold the plant in place in the soil.
The stem supports the plant. It carries food, water, and nutrients... | The part of the apple tree we usually eat is the fruit. It contains the seeds. |
train/5721 | Which air temperature was measured within the outlined area shown? | [
"23°C",
"5°C",
"-12°C"
] | 2 | The map below shows air temperatures in the lower atmosphere on April 15, 2017. 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 States National Oceanic and Atmospheric Administration/Earth System Research Lab... | closed choice | grade6 | 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.
10°C.
-12°C is within this range.
5°C and 23°C are outside of this range. |
train/5722 | Which animal's feet are also adapted to walk on snow and ice? | [
"Siberian tiger",
"tiger-striped leaf frog"
] | 0 | Polar bears live in cold, snowy areas near the Arctic Ocean. The 's feet are adapted for walking on snow and ice.
Figure: polar bear. | 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 polar bear.
The polar bear has furry feet with large pads. Its feet are adapted to walk on snow and ice. The fur can help keep the polar bear'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 sinki... |
train/5723 | 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 pink 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 d... | 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 4 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there... |
train/5724 | Which property matches this object? | [
"sticky",
"yellow"
] | 0 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. | Look at the object.
Think about each property.
A sticky object can stick to other things. The jam is sticky.
Yellow is a color.
This color is yellow. The jam is not yellow. |
train/5725 | What is the name of the colony shown? | [
"Delaware",
"North Carolina",
"New Jersey",
"Florida"
] | 0 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Delaware. | ||
train/5726 | Is the following statement about our solar system true or false?
The smallest planet is made mainly of rock. | [
"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. | The table tells you that the smallest planet is Mercury and that Mercury is made mainly of rock. So, the smallest planet is made mainly of rock. |
train/5727 | 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 | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sample B mus... |
train/5728 | Identify the question that Henry's experiment can best answer. | [
"Do bananas develop more brown spots when they are kept at room temperature compared to in a cold refrigerator?",
"Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Henry divided 40 evenly among eight paper bags and sealed the bags. He poked 20 small holes in four of the bags and left the other four without holes. He kept the bags at room temperature for three days. Then, Henry op... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/5729 | Which of these states is farthest north? | [
"Illinois",
"Oregon",
"Ohio",
"Arizona"
] | 1 | 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 north arrow is pointing. Oregon is farthest north. | |
train/5730 | 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 2.",
"The magnetic force is weaker in Pair 1.",
"The strength 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. | 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 farther apart, the magnetic force between them is weaker.
The magnets in Pair 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2. |
train/5731 | Which solution has a higher concentration of purple particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 1 | 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/5732 | Which country is highlighted? | [
"the Federated States of Micronesia",
"Tonga",
"Kiribati",
"Palau"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Palau. | ||
train/5733 | 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 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,... | 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/5734 | What is the name of the colony shown? | [
"Massachusetts",
"Connecticut",
"Pennsylvania",
"New Hampshire"
] | 1 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Connecticut. | ||
train/5735 | Which of the following organisms is the tertiary consumer in this food web? | [
"orca",
"black rockfish",
"phytoplankton",
"sea otter"
] | 0 | Below is a food web from an ocean ecosystem in Monterey Bay, off the coast of California.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade8 | natural science | biology | Ecological interactions | 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... | Tertiary consumers eat secondary consumers. So, in a food web, tertiary consumers have arrows pointing to them from secondary consumers. Secondary consumers have arrows pointing to them from primary consumers. And primary consumers have arrows pointing to them from producers.
The kelp bass has arrows pointing to it fro... |
train/5736 | Which of these states is farthest north? | [
"Louisiana",
"Vermont",
"New Mexico",
"California"
] | 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. Vermont is farthest north. | |
train/5737 | Which country is highlighted? | [
"Fiji",
"Papua New Guinea",
"Australia",
"New Zealand"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is New Zealand. | ||
train/5738 | What is the capital of Ohio? | [
"Boulder",
"Columbus",
"Portland",
"Cincinnati"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Columbus is the capital of Ohio. | ||
train/5739 | Which of the following could Aubrey and Savannah's test show? | [
"if a new batch of concrete was firm enough to use",
"if the concrete from each batch took the same amount of time to dry"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/5740 | Which ocean is highlighted? | [
"the Arctic Ocean",
"the Atlantic Ocean",
"the Indian Ocean",
"the Southern Ocean"
] | 3 | closed choice | grade7 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Southern Ocean.
The Southern Ocean reaches from the shores of Antarctica to 60° South latitude. | |
train/5741 | What is the capital of Utah? | [
"Nampa",
"Denver",
"Provo",
"Salt Lake City"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Salt Lake City is the capital of Utah. | ||
train/5742 | Complete the sentence.
Jackson's chameleons use their horns (). | [
"to dig",
"to find food",
"to fight"
] | 2 | Read the first part of the passage. It is about a type of lizard called a Jackson's chameleon.
Jackson's chameleons are small green lizards. Some have three horns on their heads.
They use their horns to fight other chameleons. | closed choice | grade1 | language science | reading-comprehension | Read-alone texts | Read passages about animals | The passage says Jackson's chameleons use their horns to fight other chameleons. | |
train/5743 | Identify the question that Irma's experiment can best answer. | [
"Do the insides of white boxes get hotter than the insides of black boxes when the boxes are left in the sun?",
"Do the temperatures inside boxes depend on the sizes of the boxes?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Irma glued lids onto 16 cardboard shoe boxes of equal size. She painted eight of the boxes black and eight of the boxes white. Irma made a small hole in the side of each box and then stuck a thermometer partially into e... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/5744 | Which statement is true about the average monthly temperature in Riyadh? | [
"June, July, and August are hotter than the other months of the year.",
"Each month of the year has about the same monthly temperature.",
"June, July, and August are colder than the other months of the year."
] | 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. Temperature is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average temperature for each month. The average temperature can be used to describe the climate of a location.
A line graph can be used t... | To describe the average temperature trends in Riyadh, look at the graph.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "June, July, and August are colder than the other months of the year." is incorrect.
The average temperatures in June, July, and August are around 35°C. These ... |
train/5745 | Which solution has a higher concentration of purple particles? | [
"Solution A",
"Solution B",
"neither; their concentrations are the same"
] | 0 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade7 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... |
train/5746 | Is the following statement about our solar system true or false?
Earth's volume is more than ten times as great as Mars's volume. | [
"false",
"true"
] | 0 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To determine if this statement is true, calculate the value of ten times the volume of Mars.
Then compare the result to the volume of Earth. The volume of Earth is 1.08 x 10^12 km^3, which is less than 1.63 x 10^12 km^3. So, Earth's volume is less than ten times as great as Mars's volume. |
train/5747 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 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 south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. |
train/5748 | Which property matches this object? | [
"bouncy",
"soft"
] | 1 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A soft object changes shape when pressed or squeezed. The stuffed puppy is soft.
A bouncy object will bounce back from the floor if you drop it. The stuffed puppy is not bouncy. |
train/5749 | Which of these states is farthest south? | [
"Washington",
"Indiana",
"Rhode Island",
"New Hampshire"
] | 1 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the south arrow is pointing. Indiana is farthest south. | |
train/5750 | What is the capital of Washington? | [
"Lexington",
"Spokane",
"Olympia",
"Seattle"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | ||
train/5751 | 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 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller 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 | 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 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/5752 | What is the capital of Louisiana? | [
"Charleston",
"Baton Rouge",
"Reno",
"Georgetown"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Baton Rouge is the capital of Louisiana. | ||
train/5753 | Which solution has a higher concentration of blue particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 2 | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. | closed choice | grade8 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... |
train/5754 | Is diamond a mineral or a rock? | [
"mineral",
"rock"
] | 0 | Diamond has the following properties:
fixed crystal structure
found in nature
made of carbon, which is a pure substance
solid
colorless streak
not made by living things | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | Diamond has all the properties of a mineral. So, diamond is a mineral. |
train/5755 | Which property do these two objects have in common? | [
"bendable",
"rough"
] | 0 | 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 bendable object can be bent without breaking. Both objects are bendable.
A rough object feels scratchy when you touch it. Neither of the objects are rough.
The property that both objects have in common is bendable. |
train/5756 | Which part of the asparagus plant do we usually eat? | [
"the flowers",
"the stem",
"the root"
] | 1 | People use asparagus plants for food. We usually eat the part of this plant that supports the plant. It carries food, water, and nutrients through the plant. | closed choice | grade4 | natural science | biology | Plants | Classify fruits and vegetables as plant parts | The fruits and vegetables we eat are parts of plants! Plants are made up of different structures. The different structures carry out important functions.
The roots take in water and nutrients from the soil. They also hold the plant in place in the soil.
The stem supports the plant. It carries food, water, and nutrients... | The part of the asparagus plant we usually eat is the stem. It supports the plant. It also carries food, water, and nutrients through the plant. |
train/5757 | What is the name of the colony shown? | [
"Iowa",
"Rhode Island",
"Georgia",
"North Carolina"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Georgia. | ||
train/5758 | Which country is highlighted? | [
"Kiribati",
"Tuvalu",
"Tonga",
"Solomon Islands"
] | 1 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | ||
train/5759 | What is this crustacean's scientific name? | [
"Gnathia marleyi",
"Gnathia clementensis"
] | 0 | This species of crustacean is a parasite that feeds on the blood of fish. It lives in the Caribbean Sea and was named in honor of the musician Bob Marley. | closed choice | grade4 | natural science | biology | Scientific names | Origins of scientific names | When a scientist identifies a new organism, he or she chooses its scientific name.
Sometimes, an organism is named after the place where it was first found. Other times, an organism is named after the scientist who first identified it. Or, the scientific name might describe the organism's physical traits.
Many of the w... | This organism's scientific name refers to Bob Marley.
The word marleyi refers to Bob Marley. So, this crustacean's scientific name is Gnathia marleyi. |
train/5760 | Which of the following fossils is younger? Select the more likely answer. | [
"palm leaf",
"crocodile egg"
] | 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 younger:
The crocodile egg fossil is in a shallower layer in the rock sequence than the palm leaf fossil. So, the crocodile egg fossil is most likely younger than the palm leaf fossil. |
train/5761 | During this time, thermal energy was transferred from () to (). | [
"each aquarium . . . the surroundings",
"the surroundings . . . each aquarium"
] | 0 | Two identical aquariums were next to an open window. One aquarium had a plastic cover on it, and the other was uncovered. This table shows how the temperature of each aquarium changed over 1.5hours. | closed choice | grade8 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each aquarium decreased, which means that the thermal energy of each aquarium decreased. So, thermal energy was transferred from each aquarium to the surroundings. |
train/5762 | In this food chain, the Arctic hare is a consumer. Why? | [
"It makes its own food.",
"It eats another organism."
] | 1 | This diagram shows a food chain from Baffin Island, a tundra ecosystem in Canada. | closed choice | grade4 | natural science | biology | Ecosystems | Identify roles in food chains | Every organism needs food to stay alive. Organisms get their food in different ways. A food chain shows how organisms in an ecosystem get their food.
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 organisms. C... | In this food chain, the Arctic hare is a consumer because it eats another organism. The Arctic hare in this food chain eats the Arctic bell-heather. |
train/5763 | Which solution has a higher concentration of pink particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 2 | The diagram below is a model of two solutions. Each pink 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 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/5764 | Which country is highlighted? | [
"Papua New Guinea",
"Samoa",
"the Marshall Islands",
"New Zealand"
] | 3 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is New Zealand. | ||
train/5765 | Which of the following organisms is the secondary consumer in this food web? | [
"persimmon tree",
"silver maple",
"pine vole",
"swallowtail caterpillar"
] | 2 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade7 | natural science | biology | Ecological interactions | 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... | Secondary consumers eat primary consumers, and primary consumers eat producers. So, in a food web, secondary consumers have arrows pointing to them from primary consumers. Primary consumers have arrows pointing to them from producers.
The persimmon tree does not have any arrows pointing to it. So, the persimmon tree is... |
train/5766 | What is the capital of Indiana? | [
"Fort Wayne",
"Springfield",
"Indianapolis",
"Topeka"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Indianapolis is the capital of Indiana. | ||
train/5767 | Which of the following statements is true? | [
"Together, the products of a chemical reaction have the same arrangement of atoms as the reactants.",
"Soap is a reactant in the saponification reaction.",
"A substance's chemical structure affects its properties."
] | 2 | A substance's chemical structure depends on the number and types of atoms in each of its molecules, as well as on how those atoms are arranged. Substances with different chemical structures have different physical and chemical properties.
When a substance is a reactant in a chemical reaction, its chemical structure cha... | closed choice | grade7 | natural science | chemistry | Chemical reactions | Explore chemical structure and properties: soapmaking | A substance's chemical structure affects its properties.
Substances with different chemical structures have different physical and chemical properties. So, a substance's chemical structure affects its properties.
Together, the products of a chemical reaction have the same arrangement of atoms as the reactants.
The prod... | |
train/5768 | Select the organism in the same species as the silver gull. | [
"Larus michahellis",
"Chroicocephalus novaehollandiae",
"Strix nebulosa"
] | 1 | This organism is a silver gull. Its scientific name is Chroicocephalus novaehollandiae. | closed choice | grade7 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A silver gull's scientific name is Chroicocephalus novaehollandiae.
Chroicocephalus novaehollandiae has the same scientific name as a silver gull. So, these organisms are in the same species.
Strix nebulosa does not have the same scientific name as a silver gull. So, Chroicocephalus novaehollandiae and Strix nebulosa a... |
train/5769 | Which country is highlighted? | [
"Solomon Islands",
"Kiribati",
"the Marshall Islands",
"Nauru"
] | 2 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Marshall Islands.
Does the Marshall Islands have any territorial disputes?
The Marshall Islands claims to own Wake Island, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States claimed Wake Island in 1899 and has... | ||
train/5770 | Which rhetorical appeal is primarily used in this ad? | [
"logos (reason)",
"ethos (character)",
"pathos (emotion)"
] | 0 | closed choice | grade12 | 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 the writer or speaker as trustworthy, authoritative, or sharing important values with the audience. An ad that appe... | The ad appeals to logos, or reason, by arguing that purchasing paper from the advertised retailer is a better financial decision. | |
train/5771 | Which of the following could Jason'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/5772 | After the Akkadian Empire ended, many cities and empires tried to control Mesopotamia. Around the 1790s BCE, which empire started controlling Mesopotamia? | [
"the Elamite Empire",
"the Babylonian Empire",
"the Akkadian Empire",
"the Neo-Sumerian Empire"
] | 1 | Look at the table. Then answer the question below. | closed choice | grade6 | social science | world-history | Ancient Mesopotamia | Mesopotamian empires | Look at the table.
The abbreviation "ca." stands for the Latin word, circa. Circa means "about." It indicates when a date is estimated. So, around 1792 BCE, the Babylonian Empire started controlling Mesopotamia.
The Babylonian (ba-bih-LOH-nee-in) Empire came after the Akkadian and Neo-Sumerian empires. The capital of t... | |
train/5773 | Select the organism in the same species as the gray heron. | [
"Pelecanus occidentalis",
"Ardea cinerea",
"Strix varia"
] | 1 | This organism is a gray heron. Its scientific name is Ardea cinerea. | closed choice | grade7 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A gray heron's scientific name is Ardea cinerea.
Strix varia does not have the same scientific name as a gray heron. So, Ardea cinerea and Strix varia are not in the same species.
Pelecanus occidentalis does not have the same scientific name as a gray heron. So, Ardea cinerea and Pelecanus occidentalis are not in the s... |
train/5774 | What is the capital of New Jersey? | [
"Provo",
"Trenton",
"Newark",
"Jersey City"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Trenton is the capital of New Jersey. | ||
train/5775 | What is the capital of New York? | [
"Albany",
"Hartford",
"Providence",
"Buffalo"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Albany is the capital of New York. | ||
train/5776 | What is the capital of New Jersey? | [
"Olympia",
"Louisville",
"Augusta",
"Trenton"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Trenton is the capital of New Jersey. | ||
train/5777 | What is the capital of Hawaii? | [
"Hilo",
"Memphis",
"Honolulu",
"Salem"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Honolulu is the capital of Hawaii. | ||
train/5778 | Which country is highlighted? | [
"Barbados",
"The Bahamas",
"Dominica",
"Cuba"
] | 3 | 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/5779 | Is the water in a sink a solid, a liquid, or a gas? | [
"a liquid",
"a solid",
"a gas"
] | 0 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter i... | The water in a sink is a liquid. A liquid takes the shape of any container it is in.
If you move the water from a sink into a different container, the water will take the shape of that container. But the water will still take up the same amount of space. | |
train/5780 | Look at the models of molecules below. Select the elementary substance. | [
"dichloromethane",
"tetraphosphorus",
"cyclopropane"
] | 1 | 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/5781 | Based on the bubble map, which of these sports has been part of both the Summer and the Winter Olympics? | [
"ice hockey",
"biathlon"
] | 0 | This bubble map shows some sports and the Olympic seasons they have been part of. | 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 bubble map uses lines or arrows to connect things that are related. This bubble map shows some sports and the Olympic seasons they have been part of.
Ice hockey is directly connected to both Summer Olympics and Winter Olympics. This tells you that ice hockey has been part of both the Summer and the Winter Olympics. |
train/5782 | Which of the following could Britney and Roxanne'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/5783 | Which property do these four objects have in common? | [
"rough",
"flexible",
"hard"
] | 0 | Select the best answer. | closed choice | grade5 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A rough object feels scratchy when you touch it. All four objects are rough.
A flexible object can be folded or bent without breaking easily. The potato sack and the sandpaper are flexible, but the sidewalk and the log are not.
A hard object does not... |
train/5784 | What is the direction of this push? | [
"away from their hands",
"toward their hands"
] | 0 | Three people work together to move a car that is stuck in the snow. Together, the people use a force to push the car forward with their hands. | closed choice | grade4 | natural science | physics | Force and motion | Identify directions of forces | A force is a push or a pull that one object applies to another. Every force has a direction.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The people push the car. The direction of the push is away from their hands. |
train/5785 | Select the organism in the same genus as the large-tailed nightjar. | [
"Chroicocephalus novaehollandiae",
"Caprimulgus europaeus",
"Goura cristata"
] | 1 | This organism is a large-tailed nightjar. Its scientific name is Caprimulgus macrurus. | closed choice | grade7 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A large-tailed nightjar's scientific name is Caprimulgus macrurus. The first word of its scientific name is Caprimulgus.
Caprimulgus europaeus is in the genus Caprimulgus. The first word of its scientific name is Caprimulgus. So, Caprimulgus europaeus and Caprimulgus macrurus are in the same genus.
Chroicocephalus nova... |
train/5786 | Which is this organism's common name? | [
"Bohadschia argus",
"leopard sea cucumber"
] | 1 | This organism is a leopard sea cucumber. It is also called Bohadschia argus. | 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,... | Bohadschia argus is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Bohadschia argus is the organism's scientific name. So, you know that leopard sea cucumber is the common name. |
train/5787 | Identify the question that Chandler's experiment can best answer. | [
"Do bananas develop more brown spots when they are kept at room temperature compared to in a cold refrigerator?",
"Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Chandler divided 40 evenly among eight paper bags and sealed the bags. He poked 20 small holes in four of the bags and left the other four without holes. He kept the bags at room temperature for three days. Then, Chand... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/5788 | What can Edgar and Aaron trade to each get what they want? | [
"Edgar can trade his tomatoes for Aaron's broccoli.",
"Aaron can trade his broccoli for Edgar's oranges.",
"Edgar can trade his tomatoes for Aaron's sandwich.",
"Aaron can trade his almonds for Edgar'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.
Edgar and Aaron open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Edgar wanted br... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Edgar wanted broccoli in his lunch and Aaron was hoping for tomatoes. Look at the labeled part of the images.
Edgar has tomatoes. Aaron 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/5789 | Which continent is highlighted? | [
"Australia",
"North America",
"Africa",
"Antarctica"
] | 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 Australia. | |
train/5790 | What is the capital of Vermont? | [
"Burlington",
"Columbus",
"Montpelier",
"New Haven"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Montpelier is the capital of Vermont. | ||
train/5791 | Can Bertholletia excelsa cells make their own food? | [
"no",
"yes"
] | 1 | This organism is Bertholletia excelsa. It is a member of the plant kingdom.
Bertholletia excelsa is commonly called a Brazil nut tree. Brazil nut trees have a tall, thin trunk. Branches grow near the top of the tree. A Brazil nut tree can live for over 500 years! | yes or no | grade5 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Bertholletia excelsa is a plant. Plant cells can make their own food. Plant cells make food using photosynthesis. |
train/5792 | What is the capital of Minnesota? | [
"Springfield",
"Arlington",
"Minneapolis",
"Saint Paul"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Saint Paul is the capital of Minnesota. | ||
train/5793 | Which type of force from the hammer moves the nail into the wood? | [
"push",
"pull"
] | 0 | A builder hammers a nail into a piece of wood. The hammer applies a force to the nail. So, the nail moves farther into the wood. | closed choice | grade3 | natural science | physics | Force and motion | Identify pushes and pulls | A force is a push or a pull that one object applies to a second object.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The hammer applies a force to the nail. This force moves the nail farther into the wood. The direction of this force is away from the hammer. This force is a push. |
train/5794 | Which of these continents does the equator intersect? | [
"Asia",
"Antarctica",
"North America"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The equator is the line at 0° latitude. It intersects Asia. It does not intersect Antarctica or North America. | |
train/5795 | Which statement describes the Great Victoria Desert ecosystem? | [
"It has many different types of organisms.",
"It has thick, moist soil."
] | 0 | Figure: Great Victoria Desert.
The Great Victoria Desert is a hot desert ecosystem located in Western Australia and South Australia. It is the largest desert in Australia! The Great Victoria Desert is home to the rare great desert skink. To stay cool during the day, great desert skinks live in holes they dig in the gro... | closed choice | 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 hot desert is a type of ecosystem. Hot deserts have the following features: a small amount of rain, dry, thin soil, and many different types of organisms. So, the following statements describe the Great Victoria Desert ecosystem: a small amount of rain, dry, thin soil, and many different types of organisms. It has ma... |
train/5796 | 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 magnetic force is stronger in Pair 2.",
"The strength of the magnetic force is the same in both pairs."
] | 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 | 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 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. |
train/5797 | Which property matches this object? | [
"yellow",
"breakable"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. | Look at the object.
Think about each property.
Yellow is a color.
This color is yellow. The glass bowl is not yellow.
A breakable object will break into pieces if you drop it. The glass bowl is breakable. |
train/5798 | Which of these organisms contains matter that was once part of the silver maple? | [
"bolete fungus",
"swallowtail caterpillar",
"pine vole"
] | 0 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade8 | natural science | biology | Ecological interactions | Interpret food webs II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows that starts from the silver maple.There is one path matter can take from the silver maple to the bolete fungus: silver maple->beaver->bobcat->bolete fungus. swallowtail caterpillar. The only arrow point... |
train/5799 | Which country is highlighted? | [
"Jamaica",
"Cuba",
"Antigua and Barbuda",
"Haiti"
] | 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... |
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