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What is the expected ratio of offspring with straight ears to offspring with curled ears? Choose the most likely ratio. | [
"4:0",
"0:4",
"2:2",
"3:1",
"1:3"
] | 0 | In a group of American curl cats, some individuals have curled ears and others have straight ears. In this group, the gene for the ear type trait has two alleles. The allele for straight ears (e) is recessive to the allele for curled ears (E).
This Punnett square shows a cross between two American curl cats. | 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 straight ears or curled ears, consider whether each phenotype is the dominant or recessive allele's version of the ear type trait. The question tells you that the e allele, which is for straight ears, is recessive to the E allele, which is for c... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 1.",
"The magnetic force is weaker in Pair 2.",
"The strength of the magnetic force is the same in both pairs."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are 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. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Bridget gazed at the ancient pug that seemed to sleep all day and noted, "You're an energetic puppy!" | [
"pun",
"verbal irony"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses verbal irony, which involves saying one thing but implying something very different.
An energetic puppy shows verbal irony because an old, exhausted dog is far from an energetic puppy. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is stronger in Pair 2.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. | |
As Sparky pulls on the leash, what is the direction of the opposing force? | [
"backward",
"forward"
] | 0 | The text below describes a pair of opposing forces. Opposing forces act on an object in opposite directions. Read the text. Then answer the question below.
Jill and her dog, Sparky, are stopped while on a walk. Sparky sees a squirrel and tugs on his leash. Think about two of the forces that act on the leash:
Sparky pul... | closed choice | grade3 | natural science | physics | Force and motion | How do balanced and unbalanced forces affect motion? | A force is a push or a pull that acts on an object. Each force acts on an object in a certain direction. If two forces act on an object in opposite directions, they are called opposing forces. | Find the direction Sparky pulls on the leash.
Jill and her dog, Sparky, are stopped while on a walk. Sparky sees a squirrel and tugs on his leash. Think about two of the forces that act on the leash:
Sparky pulls forward.
Jill pulls backward.
The text tells you that Sparky pulls forward. The opposite direction is backw... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
ready - romantic | [
"right",
"ravine"
] | 0 | closed choice | grade5 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since right is between the guide words ready - romantic, it would be found on that page. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Thou wast not born for death, immortal Bird!
—John Keats, "Ode to a Nightingale" | [
"apostrophe",
"antithesis"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses apostrophe, a direct address to an absent person or a nonhuman entity.
Immortal Bird is a direct address to the bird, a nonhuman entity. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 2 than in Pair 1. So, the magnit... | |
Which of the following could Tina'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 | 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... | ||
What is the name of the colony shown? | [
"Connecticut",
"Pennsylvania",
"North Carolina",
"Delaware"
] | 3 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Delaware. | |||
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Logan described the situation he was facing with his boss as a catch-22. | [
"literature",
"a poem"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Gree... | The source of the allusion catch-22 is literature.
Joseph Heller coined the term "catch-22" in his 1961 novel of the same name. In the novel, if an army pilot wants to avoid dangerous missions, he must be deemed mentally unfit; however, his desire to stay safe proves his sanity, so he can never be excused from a missio... | |
What is the name of the colony shown? | [
"Delaware",
"Georgia",
"New York",
"North Carolina"
] | 1 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Georgia. | |||
Not supported with pagination yet | Which job does the digestive system do? | [
"breaks down food into small particles",
"helps make food"
] | 0 | closed choice | grade5 | natural science | biology | Animals | Body systems: digestion | All organisms need food. Food gives organisms the energy they need to survive.
Animals get their food by eating other organisms. An animal's digestive system breaks down food into small particles of fat, protein, sugar, and other nutrients. The blood carries these small particles to cells throughout the animal's body.
... | The digestive system breaks down food into small particles of nutrients. Cells can get energy and building materials from these small particles.
The digestive system does not help make food. Animals cannot make food inside their bodies. They must eat other organisms. | |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Santa Barbara.
Santa Barbara is a city in California. Santa Barbara has warm temperatures in both the summer and the winter.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade4 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Santa Barbara is a city in California. Santa Barbara has warm temperatures in both the summer and the winter.
The underlined part of the passage tells you about the usual temperature pattern in Santa Barbara. This passage does not describe what the weather is like on a particular day. So, th... | |
Not supported with pagination yet | Which letter opening is more formal? | [
"Dear Mr. Tran,",
"Dear Dan,"
] | 0 | closed choice | grade9 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The first letter opening is more formal. It uses the recipient's personal title and last name. The other opening uses the recipient's first name, suggesting a more familiar relationship. | |
When did the chimps stop being afraid of Jane? | [
"After she fed them.",
"After she dressed up like a chimp."
] | 0 | Read the passage about Jane Goodall and chimpanzees.
Jane Goodall is a scientist who worked with wild chimpanzees, or chimps. At first, the chimps were scared of Jane. But Jane got them to trust her. She started giving the chimps bananas! After that, the chimps trusted Jane. Some chimps even let Jane become part of the... | closed choice | grade2 | language science | reading-comprehension | Independent reading comprehension | Read and understand informational passages | Look at the passage. It tells you when the chimps stopped being afraid of Jane.
Jane Goodall is a scientist who worked with wild chimpanzees, or chimps. At first, the chimps were scared of Jane. But Jane got them to trust her. She started giving the chimps bananas! After that, the chimps trusted Jane. Some chimps even ... | ||
Which better describes the tide pool ecosystems in Little Corona Beach? | [
"It has daily flooding and draining of seawater. It also has many different types of organisms.",
"It has no sunlight. It also has daily flooding and draining of seawater."
] | 0 | Figure: Little Corona Beach.
Little Corona Beach is in southern California. It has many tide pool ecosystems. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A tide pool is a type of ecosystem. Tide pool ecosystems have the following features: daily flooding and draining of seawater, water that is rich in nutrients, and many different types of organisms. So, the tide pool ecosystems in Little Corona Beach have daily flooding and draining of seawater. They also have many dif... | |
Which material is this road made of? | [
"plastic",
"asphalt"
] | 1 | closed choice | grade3 | natural science | physics | Materials | Identify materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials. | Look at the picture of the road.
The road is made of asphalt.
Asphalt is a hard, black material used to make roads. To make a road, construction workers have to get the asphalt very hot. Asphalt is soft and sticky when it is very hot. When the asphalt cools, it makes a strong, smooth surface for cars to drive on. | ||
Not supported with pagination yet | What is Abraham Lincoln famous for? | [
"He helped write the Declaration of Independence.",
"He gave women the right to vote.",
"He helped to end slavery."
] | 2 | closed choice | grade3 | social science | us-history | Historical figures | Abraham Lincoln | Abraham Lincoln was the 16 th president of the United States. He is famous for helping to end slavery. He is also famous for leading the country through the Civil War. | ||
Which solution has a higher concentration of yellow particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 0 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... | |
Not supported with pagination yet | Select the phase of the Moon shown in the model. | [
"full",
"third quarter"
] | 1 | The model below shows the Moon at one position in its orbit around Earth. The white half of the Moon shows the part that is lit up by the Sun. | closed choice | grade5 | natural science | earth-science | Astronomy | Identify phases of the Moon | Although the Moon appears to shine, it does not give off light. Instead, we can see the Moon because it is lit up by the Sun. The part of the Moon that is both lit up by the Sun and facing Earth is called the Moon's phase.
The Moon orbits, or goes around, Earth. As it does, the Moon's phase changes. The model below sho... | |
What is the probability that a cat produced by this cross will be heterozygous for the agouti fur gene? | [
"4/4",
"1/4",
"0/4",
"2/4",
"3/4"
] | 2 | This passage describes the agouti fur trait in cats:
Agouti is a fur pattern that is found in many mammals, including cats. When a cat has agouti fur, each of its hairs has bands of different colors. These bands give the cat's coat a striped or swirled pattern. When a cat does not have agouti fur, each of its hairs is ... | 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... | ||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
penny - public | [
"problem",
"patrol"
] | 0 | closed choice | grade7 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since problem is between the guide words penny - public, it would be found on that page. | |
Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 0 | Figure: windfarm off the coast of Denmark.
Wind turbines use energy from the wind to make electricity. The turbines were spinning especially fast in the high winds on Monday afternoon.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Wind turbines use energy from the wind to make electricity. The turbines were spinning especially fast in the high winds on Monday afternoon.
The underlined part of the passage tells you about the wind speed off the coast of Denmark on Monday afternoon. This passage describes the atmosphere ... | |
How many years passed between the United States entering World War II and Germany surrendering? | [
"six years",
"four years",
"eight years",
"two years"
] | 1 | Look at the timeline. Then answer the question. | closed choice | grade5 | social science | world-history | 20th century American history | World War II: global events | The United States entered World War II in 1941. Germany surrendered in 1945. Subtract 1941 from 1945.
Four years passed between the United States entering World War II and Germany surrendering. | ||
What is the capital of Minnesota? | [
"Topeka",
"Fairbanks",
"Saint Paul",
"Indianapolis"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Saint Paul is the capital of Minnesota. | |||
Not supported with pagination yet | Which is a complex sentence? | [
"Madison Chock and Gracie Gold were two American figure skaters in the Sochi 2014 Olympics.",
"If you are sleepy, you should go to bed early tonight."
] | 1 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple, compound, or complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alone. It is independent.
aft... | The second sentence is the complex sentence. It is made up of an independent clause and a dependent clause. The dependent clause begins with the subordinating conjunction if.
If you are sleepy, you should go to bed early tonight. | |
Not supported with pagination yet | Select the bird. | [
"manta ray",
"emerald hummingbird",
"grass frog",
"green iguana"
] | 1 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds have feathers, two wings, and a beak. | A green iguana is a reptile. It has scaly, waterproof skin.
Iguanas are a type of lizard. Iguanas eat plants and fruit.
An emerald hummingbird is a bird. It has feathers, two wings, and a beak.
Hummingbirds can fly backwards and upside-down!
A manta ray is a fish. It lives underwater. It has fins, not limbs.
Rays have ... | |
Not supported with pagination yet | Does this passage describe the weather or the climate?
On May 5, 1964, in central Nebraska, there was a tornado with wind speeds over 200 miles per hour! | [
"climate",
"weather"
] | 1 | Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade4 | natural science | earth-science | Weather and climate | What's the difference between weather and climate? | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the text carefully.
On May 5, 1964, in central Nebraska, there was a tornado with wind speeds over 200 miles per hour!
This passage tells you about the wind speed in central Nebraska on May 5, 1964. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
Not supported with pagination yet | Select the animal. | [
"Lionfish swim underwater.",
"Fig trees have many leaves."
] | 0 | closed choice | grade2 | natural science | biology | Classification | Identify plants and animals | Plants and animals are living things. Living things are called organisms.
Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can.
Animals also come in many shapes and sizes. Most animals can move around. A... | A lionfish is an animal. It swims underwater.
Lionfish have poisonous venom on the tips of their fins. This poison helps protect lionfish from predators.
A fig tree is a plant. It has many leaves.
Fig trees grow in dry, sunny places. | |
Which solution has a higher concentration of green particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 0 | The diagram below is a model of two solutions. Each green 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 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... | |
Not supported with pagination yet | Which sentence uses a simile? | [
"The ripe tomatoes were small red balloons.",
"The ripe tomatoes were like small red balloons."
] | 1 | closed choice | grade4 | language science | figurative-language | Literary devices | Identify similes and metaphors | Similes and metaphors are figures of speech that compare two things that are not actually alike.
A simile compares two things by saying that one is like the other. Similes often use the words like and as.
My sister runs like a cheetah.
The sister's running and a cheetah's running are compared using the word like.
A che... | This sentence uses a simile:
The ripe tomatoes were like small red balloons.
The words tomatoes and balloons are compared using the word like.
This sentence uses a metaphor:
The ripe tomatoes were small red balloons.
The words tomatoes and balloons are compared without the word like or as. | |
Not supported with pagination yet | Which object has more thermal energy? | [
"a 2-kilogram brick at a temperature of 140°F",
"a 2-kilogram brick at a temperature of 70°F"
] | 0 | The objects are identical except for their temperatures. | closed choice | grade3 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter move faster, the temperature goes up. The matter now has both ... | The two bricks have the same mass but different temperatures. Since the 140°F brick is hotter than the 70°F brick, it has more thermal energy. |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Rainbow Falls in Hilo, Hawaii.
Hilo is a city on the island of Hawaii. Hilo is known for its lush landscapes and beautiful waterfalls. This city is close to the equator and the ocean. So, it gets lots of rain, and the temperature doesn't change much throughout the year.
Hint: Weather is what the atmosphere is l... | closed choice | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Hilo is a city on the island of Hawaii. Hilo is known for its lush landscapes and beautiful waterfalls. This city is close to the equator and the ocean. So, it gets lots of rain, and the temperature doesn't change much throughout the year.
The underlined part of the passage tells you about t... | |
Not supported with pagination yet | Using only these supplies, which question can Jaylen investigate with an experiment? | [
"Does white or whole wheat sandwich bread grow visible mold in fewer days?",
"Does white sandwich bread grow visible mold in fewer days if the bread is stored inside or outside the refrigerator?",
"Does white sandwich bread grow visible mold in fewer days if the bread is stored in a paper bag or in a plastic ba... | 1 | Jaylen starts to make a sandwich, but he sees mold on the bread! He wonders what factors affect how mold grows on bread. So, he decides to design an experiment. He has the following supplies available:
two loaves of white sandwich bread
a small plastic bag
a large plastic bag
a refrigerator | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Which property do these three objects have in common? | [
"fragile",
"flexible",
"transparent"
] | 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 flexible object can be folded or bent without breaking easily. All three objects are flexible.
A fragile object will break into pieces if you drop it. None of the objects are fragile.
You can see clearly through a transparent object. None of the ob... | |
Which solution has a higher concentration of pink particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 1 | 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.
... | |
Not supported with pagination yet | Last year, there were seven men's clothing stores on Main Street in Fairfax. This year, there are only three. What probably happened to the overall supply of men's shirts in Fairfax? | [
"The supply probably went down.",
"The supply probably went up."
] | 0 | closed choice | grade3 | social science | economics | Supply and demand | Understand overall supply and demand | Overall supply is the total amount of a good or service that producers make and sell. There are several things that can make overall supply go up or down. The table below shows how changes to these things might affect overall supply.
| Resources | Number of producers or suppliers | Expected change in demand
Supply goe... | When four men's clothing stores closed on Main Street, the number of suppliers went down. There were fewer stores selling men's shirts. So, the supply of men's shirts probably went down. | |
Not supported with pagination yet | Select the vertebrate. | [
"red-spotted purple butterfly",
"bess beetle",
"domestic cat",
"earthworm"
] | 2 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade4 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A bess beetle is an insect. Like other insects, a bess beetle is an invertebrate. It does not have a backbone. It has an exoskeleton.
A domestic cat is a mammal. Like other mammals, a domestic cat is a vertebrate. It has a backbone.
An earthworm is a worm. Like other worms, an earthworm is an invertebrate. It does not ... |
Not supported with pagination yet | Which tense does the sentence use?
Mr. Bullock will deliver the envelope to Rick. | [
"present tense",
"future tense",
"past tense"
] | 1 | closed choice | grade4 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, deliver. The verb tells you about something that is going to happen. | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"sample A",
"neither; the samples have the same temperature"
] | 0 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sample B mus... | |
Which property matches this object? | [
"shiny",
"scratchy"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. | Look at the object.
Think about each property.
A scratchy object is rough and itchy against your skin. The cactus is scratchy.
A shiny object reflects a lot of light. The cactus is not shiny. | |
Not supported with pagination yet | Which text uses the word can in its traditional sense? | [
"If Jackie prefers a keyboard with the Dvorak layout, she can use mine. In my opinion, it's faster than typing on a keyboard with a QWERTY layout.",
"Jackie can type using a keyboard with a QWERTY layout, but she prefers the Dvorak layout. The two keyboards have different arrangements of letters and symbols."
] | 1 | closed choice | grade12 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The first text uses can in its traditional sense: to have the ability to.
Jackie can type using a keyboard with a QWERTY layout, but she prefers the Dvorak layout. The two keyboards have different arrangements of letters and symbols.
The second text uses can in its nontraditional sense: to have permission to.
If Jackie... | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Bruce went on to calculus after studying trigonometry, but he never fully comprehended it.",
"Bruce went on to calculus after studying trigonometry, but he never fully comprehended calculus."
] | 0 | closed choice | grade11 | language science | writing-strategies | Pronouns | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The second answer choice contains a vague pronoun reference. The pronoun it could refer to calculus or trigonometry.
The first answer choice shows a possible correction for the vague pronoun reference. It has been replaced with calculus.
Bruce went on to calculus after studying trigonometry, but he never fully comprehe... | |
Not supported with pagination yet | Which correctly shows the title of a movie? | [
"To Kill a Mockingbird",
"To kill a mockingbird"
] | 0 | closed choice | grade4 | language science | capitalization | Formatting | Capitalizing titles | In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or | Capitalize the first word, the last word, and every important word in between. The word a is not important, so it should not be capitalized.
The correct title is To Kill a Mockingbird. | |
Is fluorite a mineral? | [
"yes",
"no"
] | 0 | Fluorite has the following properties:
fixed crystal structure
not made by living things
found in nature
solid
pure substance | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Fluorite has all the properties of a mineral. So, fluorite is a mineral. | |
What is the capital of Nevada? | [
"Las Vegas",
"Dover",
"Reno",
"Carson City"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Carson City is the capital of Nevada. | |||
Not supported with pagination yet | What does the metaphor in this text suggest?
When Darnell lost his job, he was devastated. The only light in the sea of darkness was the prospect of pursuing a new career. | [
"Darnell felt in the dark about what to do after losing his job.",
"There was a benefit to Darnell's job loss."
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A metaphor compares two things that are not actually alike without using like or as.
The snow formed a blanket over the town. | The text uses a metaphor, comparing two things that are not actually alike without using like or as.
The metaphor the only light in the sea of darkness was the prospect of pursuing a new career suggests that there was a benefit to Darnell's job loss. A light would be beneficial in helping someone escape a dark, difficu... | |
Which property do these four objects have in common? | [
"transparent",
"sweet",
"sour"
] | 2 | 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.
Sugar has a sweet taste. The dill pickles are not sweet.
You can see clearly through a transparent object. The lime, the lemon, and the green apple are not transparent.
A lemon has a sour taste. All four objects are sour.
The property that all four o... | |
Not supported with pagination yet | Which word does not rhyme? | [
"robe",
"globe",
"plant"
] | 2 | closed choice | grade1 | language science | phonological-awareness | Rhyming | Which word does not rhyme? | Rhyming words are words that end with the same sound.
The words tip and slip rhyme. They both end with the ip sound.
The words lake and make rhyme. They both end with the ake sound.
The words tip and lake don't rhyme. They end with different sounds. | The words globe and robe rhyme. They both end with the obe sound.
The word plant does not rhyme. It ends with a different sound. | |
Which statement describes the Yasuni National Park ecosystem? | [
"It has only a few types of organisms.",
"It has many different types of organisms.",
"It has soil that is rich in nutrients."
] | 1 | Figure: Yasuni National Park.
The Amazon rain forest in South America is the largest rain forest ecosystem in the world. Ecuador's Yasuni National Park, which is in the Amazon rain forest, has many different species of plants, birds, and mammals. | closed choice | grade6 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A 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, the following statement describes the Yasuni National Park ecosystem: year-round rain and warm temperatures,... | |
Which continent is highlighted? | [
"Australia",
"South America",
"Antarctica"
] | 1 | closed choice | grade2 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is South America. | ||
Not supported with pagination yet | Which change best matches the sentence?
Small pieces of rock are carried away by wind. | [
"landslide",
"erosion",
"drought"
] | 1 | closed choice | grade3 | natural science | earth-science | Earth events | Classify changes to Earth's surface II | |||
Not supported with pagination yet | Is a car a good or a service? | [
"a service",
"a good"
] | 1 | closed choice | grade3 | social science | economics | Basic economic principles | Goods and services | Everything you can buy is either a good or a service.
A good is something you can touch or hold in your hands. For example, a hammer is a good.
A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service. | To decide whether a car is a good or a service, ask these questions:
Is a car something you can touch? Yes.
Is a car a job you might pay someone else to do? No.
So, a car is a good. | |
What is the capital of Ohio? | [
"Cleveland",
"Des Moines",
"Cincinnati",
"Columbus"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Columbus is the capital of Ohio. | |||
Not supported with pagination yet | Which tense does the sentence use?
The sisters call their grandfather. | [
"present tense",
"past tense",
"future tense"
] | 0 | closed choice | grade2 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, call. The verb tells you about something that is true or happening now. | |
Complete the sentence.
The mutation in the () affected the structure and function of the (). | [
"transporter protein . . . w gene",
"w gene . . . transporter protein"
] | 1 | The following passage describes the effects of a gene mutation, which is a permanent change in a gene. Read the passage and then follow the instructions below.
The eyes of fruit flies look red because they contain molecules called pigments, which color the eyes red. Cells in the eyes of fruit flies have parts that mak... | closed choice | grade6 | natural science | biology | Genes to traits | Describe the effects of gene mutations on organisms | An organism's genes contain information about its proteins. Each gene encodes, or contains the instructions for making, one protein or a group of proteins.
A permanent change in a gene is called a mutation. Because a mutation changes a gene, the mutation may change the structure of the protein encoded by that gene.
The... | A mutation in a gene may affect the protein it encodes.
So, the mutation in the w gene affected the structure and function of the transporter protein. | |
Which better describes the Mojave Desert ecosystem? | [
"It has dry, thin soil. It also has only a few types of organisms.",
"It has dry, thin soil. It also has many different types of organisms."
] | 1 | Figure: Mojave Desert.
The Mojave Desert is a desert ecosystem located mostly in Southern California. | 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 desert is a type of ecosystem. Deserts have the following features: a small amount of rain, dry, thin soil, and many different types of organisms. So, the Mojave Desert has dry, thin soil. It also has many different types of organisms. | |
Not supported with pagination yet | Based on this information, what is Aphrodite's phenotype for the coat color trait? | [
"ll",
"a red coat"
] | 1 | In a group of cows, some individuals have a black coat and others have a red coat. In this group, the gene for the coat color trait has two alleles. The allele L is for a black coat, and the allele l is for a red coat.
Aphrodite, a cow from this group, has a red coat. Aphrodite has two alleles for a red coat. | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's phenotype for a trait is its observable version of that trait. Aphrodite's observable version of the coat color trait is a red coat. So, Aphrodite's phenotype for the coat color trait is a red coat. |
What is the capital of Missouri? | [
"Milwaukee",
"Saint Louis",
"Kansas City",
"Jefferson City"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | |||
What is the direction of this push? | [
"toward her finger",
"away from her finger"
] | 1 | A woman is about to topple a line of dominoes. She uses a force to push the first domino with her finger. | 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 woman pushes the first domino. The direction of the push is away from her finger. | |
Which of these states is farthest west? | [
"Maine",
"Delaware",
"Michigan",
"New York"
] | 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 west arrow is pointing. Michigan is farthest west. | ||
What is the capital of Wisconsin? | [
"Bismarck",
"Milwaukee",
"Green Bay",
"Madison"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Madison is the capital of Wisconsin. | |||
Not supported with pagination yet | Complete the sentence so that it uses personification.
Fine rays of sunlight () through the tangle of leaves overhead. | [
"appeared",
"peered"
] | 1 | closed choice | grade10 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the word peered. It describes the rays of sunlight as if they were people looking through the trees. | |
Not supported with pagination yet | Suppose Jeffrey decides to bake chocolate muffins. Which result would be a cost? | [
"Jeffrey will give up some muffins. He could have made more pumpkin muffins than chocolate muffins.",
"Jeffrey will get to eat chocolate muffins. He thinks chocolate muffins are tastier than pumpkin muffins."
] | 0 | Jeffrey is deciding whether to bake chocolate muffins or pumpkin muffins. He wants the muffins to be tasty. But he also wants to make a lot of muffins. | closed choice | grade4 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Jeffrey wants or needs:
Jeffrey will give up some muffins. He could have made more pumpkin muffins than chocolate muffins. |
Not supported with pagination yet | Which figure of speech is used in this text?
We must learn to live together as brothers or perish together as fools.
—Martin Luther King, Jr., 1964 commencement address at Oberlin college | [
"antithesis",
"assonance"
] | 0 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses antithesis, the contrasting of opposing ideas within a parallel grammatical structure.
King contrasts two parallel phrases, live together as brothers and perish together as fools. | |
Not supported with pagination yet | What does the verbal irony in this text suggest?
While waiting for her search results, Ling exclaimed, "My Internet connection is as speedy as a snail!" | [
"The Internet connection was very slow.",
"The Internet connection was very fast."
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Interpret the figure of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking dow... | The text uses verbal irony, which involves saying one thing but implying something very different.
As speedy as a snail suggests that the Internet connection was very slow. A snail is not speedy, and neither was Ling's Internet connection. | |
Not supported with pagination yet | Which is a compound sentence? | [
"The farmer needs to plow his fields, but his tractor is broken.",
"You can make a quill pen with a goose feather."
] | 0 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple or compound? | A simple sentence is a sentence with only one subject and predicate.
The pitcher threw the ball to first base.
A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so.
The pitcher threw the ball, and the batter hit it.
Some simple sentences have a compound subject or ... | The first sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction but.
The farmer needs to plow his fields, but his tractor is broken. | |
Which months have average temperatures of 30°C or higher in Dubai? | [
"January through May",
"July through November",
"May through September"
] | 2 | 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 Dubai, look at the graph.
Choice "May" is incorrect.
Choice "Jul" is incorrect.
Choice "Sep" is incorrect.
Choice "Nov" is incorrect.
Choice "Jan" is incorrect.
The average temperatures in May, June, July, August, and September are all 30°C or higher. So, May through Septem... | |
Not supported with pagination yet | What information supports the conclusion that Reagan inherited this trait? | [
"Reagan's parents were born with wavy hair. They passed down this trait to Reagan.",
"Reagan and her mother both have short hair."
] | 0 | Read the description of a trait.
Reagan has wavy hair. | closed choice | grade6 | natural science | biology | Genes to traits | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Select the fish below. | [
"great white shark",
"toco toucan"
] | 0 | Fish live underwater. They have fins, not limbs. A piranha is an example of a fish. | 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 toco toucan is a bird. It has feathers, two wings, and a beak.
Toucans have large beaks. A toucan's beak can be half as long as its body.
A great white shark is a fish. It lives underwater. It has fins, not limbs.
Great white sharks can live for up to 70 years. | |
Not supported with pagination yet | Select the living thing. | [
"stalactite",
"brick wall",
"pear tree",
"mug"
] | 2 | closed choice | grade4 | natural science | biology | Classification | Identify living and nonliving things | All living things are made up of cells. Plants, animals, and some fungi have many cells. Other living things are made up of just one cell.
All living things need food and water. Water helps living things break down food and remove waste. Food gives living things energy. They use energy from food to grow and change.
All... | A pear tree is a living thing.
Pear trees grow and respond to their environment. They need food and water. Pear trees are made up of many cells.
Pear trees are plants. They make their own food using water, carbon dioxide, and energy from sunlight.
A mug is not a living thing.
Mugs do not have all of the traits of livin... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 1.",
"The magnetic force is stronger in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 2 are closer together than the magnets in Pair 1. So, the magnetic force is stronger in Pair 2 than in Pair 1. | |
Which of the following could Gavin'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... | ||
Not supported with pagination yet | What is the source of the allusion in the sentence below?
When I learned the details of Rosa's Faustian bargain, I was in disbelief. | [
"literature",
"Roman mythology"
] | 0 | closed choice | grade12 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Gree... | The source of the allusion Faustian bargain is literature.
In a play by Christopher Marlowe based on the legend of Faust, a man strikes a deal with the devil. Disregarding the long-term consequences of his actions, he sells his soul in exchange for power.
The allusion Faustian bargain means a compromise of one's values... | |
Not supported with pagination yet | The donkeys move the carts at the same speed. Which cart is pulled with a larger force? | [
"a cart holding 46 pounds",
"a cart holding 53 pounds"
] | 1 | Two donkeys pull carts from the farmhouse to the yard. The carts are the same. Each cart is holding different tools. | closed choice | grade2 | natural science | physics | Force and motion | How do mass and force affect motion? | A force is a push or a pull.
A force can make an object start moving or stop an object that is moving. A force can also make an object speed up, slow down, or change direction.
Forces can be different sizes.
Think about trying to move a heavy object and a light object. Imagine you want to move them at the same speed. Y... | Look for the cart that is heavier.
A cart holding 53 pounds is heavier than a cart holding 46 pounds. So, the cart holding 53 pounds needs a larger force to start moving at the same speed as the other cart. |
Not supported with pagination yet | What kind of sentence is this?
The panoramic vistas along the South Rim of the Grand Canyon are simply breathtaking. | [
"exclamatory",
"declarative",
"interrogative"
] | 1 | closed choice | grade9 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement and always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An imperative sentence makes a request or a demand and usually ends with a period. If a demand shows strong feeling, it can ... | The sentence is a statement and ends with a period. It is a declarative sentence. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"thanks,\nBella",
"Thanks,\nBella"
] | 1 | closed choice | grade4 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Using only these supplies, which question can Greg investigate with an experiment? | [
"Do rubber balloons stick to a wooden door or a metal door longer after being rubbed on his hair?",
"Do rubber balloons or foil balloons stick to the wooden door longer after being rubbed on his hair?",
"Do rubber balloons stick to a cotton blanket or a wooden door longer after being rubbed on his hair?"
] | 2 | Greg went to a magic show. The magician rubbed a balloon on her hair and then held the balloon against a wall. When the magician released the balloon, Greg was amazed to see that it stuck to the wall! He wonders what factors affect how well balloons stick to different surfaces. So, he decides to design an experiment. H... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Not supported with pagination yet | Which would stretch the most? | [
"gold nugget",
"aluminum foil",
"gum"
] | 2 | closed choice | grade4 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy.
For examp... | Stretchy is a property. A stretchy material gets longer when you pull on it.
Look at each picture, one at a time. Imagine pulling on the material shown in each picture.
Of the choices, the gum would stretch the most. If you pull on soft chewing gum, it will get longer. | |
Which air temperature was measured within the outlined area shown? | [
"-18°C",
"12°C",
"5°C"
] | 0 | 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.
-18°C is within this range.
5°C and 12°C are outside of this range. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Ben has naturally blond hair. | [
"inherited",
"acquired"
] | 0 | Hint: Some people dye their hair. But this does not change their natural hair color. | closed choice | grade4 | natural science | biology | Traits and heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | Humans do not choose their natural hair color. Instead, children get their natural hair color from their parents. So, Ben's hair color is an inherited trait. |
Not supported with pagination yet | Is mowing grass a good or a service? | [
"a service",
"a good"
] | 0 | closed choice | grade2 | social science | economics | Economics | Goods and services | Everything you can buy is either a good or a service.
A good is something you can touch or hold in your hands. For example, a hammer is a good.
A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service. | To decide whether mowing grass is a good or a service, ask these questions:
Is mowing grass something you can touch? No.
Is mowing grass a job you might pay someone else to do? Yes.
So, mowing grass is a service. | |
Not supported with pagination yet | Suppose Nellie decides to take a trip to Tennessee. Which result would be a cost? | [
"Nellie will give up the chance to go to Maryland. She would have enjoyed a trip to Maryland more than Tennessee.",
"Nellie will save some money. Plane tickets for Nellie to get to Tennessee are less expensive than tickets to Maryland."
] | 0 | Nellie is deciding whether to take a trip to Maryland or Tennessee. She wants to enjoy her trip. But she is also trying to save money. | closed choice | grade5 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Nellie wants or needs:
Nellie will give up the chance to go to Maryland. She would have enjoyed a trip to Maryland more than Tennessee. |
Not supported with pagination yet | Which figure of speech is used in this text?
We held our breath as the basketball made an arc toward the basket and then sunk into the net with a satisfying whoosh. | [
"allusion",
"onomatopoeia"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses onomatopoeia, a word that expresses a sound.
Whoosh represents the sound of the basketball going through the net. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 1.",
"The magnetic force is weaker in Pair 2.",
"The strength of the magnetic force is the same in both pairs."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 2 are farther apart than the magnets in Pair 1. So, the magnetic force is weaker in Pair 2 than in Pair 1. | |
The United States has a federal system. Based on these definitions, which of these statements would most likely be made by a person who lives under a federal system? | [
"I only pay attention to state politics since the national government has almost no power.",
"Both my state and national government officials have power over important issues.",
"My national government officials decide most issues that come up."
] | 1 | Think about the name of the United States of America. As the name shows, the country has both a united national government and a collection of state governments. In the following questions, you will learn about the relationship between the national government and state governments. You will also learn about how state a... | closed choice | grade6 | social science | civics | Government | State and local government | |||
Not supported with pagination yet | Which figure of speech is used in this text?
It's an open secret that Kamal is writing a book based on his experiences living in Singapore. He never talks about it, but almost all his friends know. | [
"euphemism",
"oxymoron"
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses an oxymoron, a joining of two seemingly contradictory terms.
Open secret is a contradiction, because open describes something that is freely or publicly known, and a secret is hidden. | |
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."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni... | |
What is the capital of Oregon? | [
"Denver",
"Portland",
"Omaha",
"Salem"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Salem is the capital of Oregon. | |||
Not supported with pagination yet | Select the one substance that is not a mineral. | [
"Pyrite is a solid. It is formed in nature.",
"Native copper is a pure substance. It is not made by living things.",
"Molasses is a liquid. It is made by humans."
] | 2 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify minerals using properties | 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... | Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Pyrite is a mineral.
Native copper is a mineral.
Molasses is a liquid. But all minerals are solids.
Molasses is made by humans. But minerals are not made by living things.
So, mo... | |
Which animal is also adapted to be camouflaged among dead leaves? | [
"Arctic wolf",
"plated leaf chameleon"
] | 1 | Orange oakleaf butterflies live in the forests of Asia. This butterfly is adapted to be camouflaged among dead leaves.
Figure: orange oakleaf butterfly. | 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 orange oakleaf butterfly.
The orange oakleaf butterfly has a brown leaf-shaped body. It is adapted to be camouflaged among dead leaves, which often have a reddish or brownish color. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptatio... | |
Which country is highlighted? | [
"New Zealand",
"Samoa",
"Tonga",
"Fiji"
] | 1 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Samoa. | |||
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 1.",
"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 | grade8 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are... | |
Not supported with pagination yet | Which organ protects the body's other organs? | [
"heart",
"skeleton",
"brain"
] | 1 | closed choice | grade3 | natural science | biology | Animals | Human organs and their functions | |||
Not supported with pagination yet | What does the idiom in this text suggest?
"Speak of the devil!" Candice declared when Johnny strolled into the room. | [
"Candice had just been speaking about Johnny.",
"Candice thought Johnny was a troublemaker."
] | 0 | closed choice | grade8 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An idiom is an expression that cannot be understood literally. Its meaning must be learned.
The assignment was a piece of cake. | The text uses an idiom, an expression that cannot be understood literally.
The idiom speak of the devil suggests that Candice had just been speaking about Johnny. People say this when the person they've just been speaking about coincidentally arrives, as if summoned. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Isabelle entered the bustling, aromatic spice market in Istanbul and said to her travel companion, "We're not in Kansas anymore." | [
"a movie",
"a fable"
] | 0 | closed choice | grade8 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion We're not in Kansas anymore is a movie.
In the 1939 film The Wizard of Oz, Dorothy, a young farm girl from Kansas, finds herself in Oz, an unusual place that looks nothing like her home. She says to her dog, "Toto, I've a feeling we're not in Kansas anymore."
The allusion We're not in Kansas ... | |
What is the capital of Oklahoma? | [
"Charleston",
"Oklahoma City",
"Denver",
"Tulsa"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Oklahoma City is the capital of Oklahoma. | |||
Not supported with pagination yet | Which figure of speech is used in this text?
Josiah's leaving his job? That's old news. He's been planning that for months. | [
"oxymoron",
"euphemism"
] | 0 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses an oxymoron, a joining of two seemingly contradictory terms.
Old news is a contradiction, because news is recent information. |
Subsets and Splits
Validation Subject & Topic Summary
Reveals the distribution and count of images across different subjects, topics, and categories, highlighting the most prevalent combinations.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of entries across different topics where images are missing, allowing for a more representative analysis of text-only data.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of text entries across different topics, ensuring that each topic is proportionally represented, which is useful for further analysis or model training.
Random Sample by Topic Ratio
This query balances the dataset by randomly selecting a proportional number of items from each topic to create a balanced subset of 3000 items, revealing how well-represented each topic is in the dataset.
Topic Counts by Grade
Provides a breakdown of the number of questions by topic (physics, chemistry, biology, geography) for each grade level, revealing the distribution of question types.
Validation Category Counts
Counts the number of unique questions per category, helping to understand the distribution of questions across different categories.
SQL Console for derek-thomas/ScienceQA
Identifies categories, questions, and answers that appear more than four times in the validation dataset with images, highlighting common or repetitive entries.
ScienceQA Validation Grouped Data
Provides a count of images and overall occurrences for each combination of subject, topic, category, and answer, helping to identify popular or common configurations.
Train Data with Numeric Choices
This query identifies distinct rows in the dataset where one of the elements in the choices column contains a number and the image column is null, providing insight into data completeness and specific patterns in the choices.
Physics Train with Images and Lectures
Retrieves physics educational records with images and lectures for specific grade levels, providing basic filtering but offering limited analytical insight beyond data availability.
Physics Q&As with Images
Retrieves physics-related training examples with images for specific grade levels, providing basic filtered data but offering limited analytical insight beyond simple categorization.
Physics Questions Gr 2-6 With Images
Retrieves physics-related test items with images for specific grade levels, providing basic filtered data but offering limited analytical insights beyond simple data retrieval.
Filter Text-only Train Questions
Retrieves questions and related metadata from the dataset excluding those with images, offering basic data filtering.
Skills Without Images
Counts the number of skills where the image is missing, providing a basic overview of incomplete data.
Top 10 Hard Text Questions
Retrieves the top 10 longest questions without images, ordered by grade level in descending order, providing basic insight into potentially more complex questions.
SQL Console for derek-thomas/ScienceQA
Counts the occurrences of each category, question, and answer combination where an image is present, providing basic filtering on the dataset.
List ScienceQA Topics
Lists all unique topics in the dataset, which provides a basic overview of the categories present.
Cultural Questions Without Images
Retrieves 100 entries from the 'train' dataset where the image is missing and the topic is 'culture', providing basic filtering with limited analytical value.
Biology Skills for Grades 2 & 3
Lists unique skills and categories for biology topics in grades 2 and 3, providing basic filtering of the dataset.
Biology Qs for Grades 2 &
Retrieves all entries for grade 2 and grade 3 students focusing on the biology topic, providing a basic filtered view of the dataset.
Biology Grade 3 Questions Count
Counts the number of entries for grade 3 students in the biology topic, providing a basic count of data points.
Select Test Rows With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering without deep analytical value.
Test Images Query
This query retrieves a limited sample of rows where the image column is not null, providing basic filtering but minimal analytical value.
Test Data with Images
The query filters out rows where the image column is not null, providing a basic subset of the data but without much analytical insight.
Select Test Entries With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering but no deeper analytical insight.