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Which property do these four objects have in common? | [
"hard",
"soft",
"opaque"
] | 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.
A soft object changes shape when pressed or squeezed. The stuffed dice, the tennis ball, and the rubber band are soft, but the clay flower pot is not.
A hard object does not change shape when pressed or squeezed. The clay flower pot is hard, but the ... | |
Select the organism in the same genus as the Steller's sea eagle. | [
"Haliaeetus leucocephalus",
"Polysticta stelleri",
"Alopias pelagicus"
] | 0 | This organism is a Steller's sea eagle. Its scientific name is Haliaeetus pelagicus. | closed choice | grade6 | 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 Steller's sea eagle's scientific name is Haliaeetus pelagicus. The first word of its scientific name is Haliaeetus.
Polysticta stelleri is in the genus Polysticta. The first word of its scientific name is Polysticta. So, Polysticta stelleri and Haliaeetus pelagicus are not in the same genus.
Alopias pelagicus and Hal... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is stronger in Pair 1.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 2."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other. | Distance affects the strength of the magnetic force. But the distance between the magnets in Pair 1 and in Pair 2 is the same.
So, the strength of the magnetic force is the same in both pairs. | |
What is the expected ratio of offspring with long fur to offspring with short fur? Choose the most likely ratio. | [
"4:0",
"0:4",
"2:2",
"1:3",
"3:1"
] | 2 | In a group of Syrian hamsters, some individuals have short fur and others have long fur. In this group, the gene for the fur length trait has two alleles. The allele for long fur (f) is recessive to the allele for short fur (F).
This Punnett square shows a cross between two Syrian hamsters. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate 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 long fur or short fur, consider whether each phenotype is the dominant or recessive allele's version of the fur length trait. The question tells you that the f allele, which is for long fur, is recessive to the F allele, which is for short fur.
... | |
Which solution has a higher concentration of purple particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each purple 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 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... | |
Which of the following was an independent variable in this experiment? | [
"the length of the filtering straw",
"the number of Giardia that remained in the water"
] | 0 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Giardia is a microscopic parasite that lives in water and can infect humans. Dr. Hoffman designed a drinking straw that contained a filter to remove Giardia from water. Dr. Hoffman wanted to know if a longer f... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify independent and dependent variables | Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato... | ||
Not supported with pagination yet | What is the mass of an elephant? | [
"5,325 kilograms",
"5,325 grams"
] | 0 | Select the better estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose metric units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using metric units, mass may be written with units of grams or kilograms.
There... | The better estimate for the mass of an elephant is 5,325 kilograms.
5,325 grams is too light. |
Not supported with pagination yet | Eli Whitney invented the cotton gin in 1793. The cotton gin is a machine that makes it easier to harvest cotton quickly. What happened to the overall supply of cotton after 1793? | [
"The supply went up.",
"The supply went down."
] | 0 | closed choice | grade7 | 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... | The cotton gin was a new technology that made it possible to harvest cotton much faster than before. Cotton growers were able to produce much more cotton in the same amount of time. So, the supply of cotton went up. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
ill - inspector | [
"is",
"impose"
] | 1 | 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 impose is between the guide words ill - inspector, it would be found on that page. | |
Identify the question that Cooper's experiment can best answer. | [
"Does water freeze more quickly than apple juice?",
"Does apple juice expand more or less than water when it freezes?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Cooper poured 30 milliliters of water into each of six measuring cups. He poured the same volume of apple juice into another six measuring cups. He kept the measuring cups in a freezer for 48 hours. Cooper then observed... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Complete the sentence.
Rain forming in a cloud is a (). | [
"physical change",
"chemical change"
] | 0 | closed choice | grade5 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form new molecules. The types of molecules in matter before an... | Rain forming in a cloud is a change of state. So, it is a physical change. Water vapor in the air condenses into tiny droplets of liquid water. These droplets make up a cloud. When there is enough water in the air, the droplets will fall as rain. | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"neither; the samples have the same temperature",
"sample B"
] | 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 | 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 A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sample A mus... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Ronald persisted despite his friends' attempts to tell him that this was a Gordian knot. | [
"U.S. history",
"ancient legend"
] | 1 | 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 Gordian knot is ancient legend.
According to legend, Alexander the Great used his sword to slash an intricate knot by which a chariot was tied to a pole in the city of Gordium.
The allusion Gordian knot means a highly complex problem. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Gavin has a scar on his right ankle. | [
"inherited",
"acquired"
] | 1 | Hint: Most scars are caused by accidents during a person's life. | closed choice | grade3 | natural science | biology | 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... | Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait. |
What is the capital of South Dakota? | [
"Columbus",
"Pierre",
"Topeka",
"Lincoln"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Pierre is the capital of South Dakota. | |||
Not supported with pagination yet | According to Newton's third law, what other force must be happening? | [
"The suitcase is pushing on Kenneth.",
"The suitcase is pulling on Kenneth."
] | 1 | Isaac Newton was born in the 1600s and studied how objects move. He discovered three fundamental laws about forces and motion. According to Newton's third law, for every force, there is an equal and opposite force.
Consider the following force:
Kenneth is pulling on a full suitcase. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | Predict forces using Newton's third law | According to Newton's third law, for every force, there is an equal and opposite force. This means that if one object is applying a force on a second object, the second object must also be applying a force on the first object, but in the opposite direction.
For example, if your hand is pushing down on a table, the tabl... | Kenneth is pulling on the suitcase. So, Newton's third law tells you that the suitcase is pulling on Kenneth. |
Not supported with pagination yet | What information supports the conclusion that Hansen acquired this trait? | [
"Hansen's scar was caused by an accident. He cut his arm when he fell off his bicycle.",
"Some scars fade more quickly than others."
] | 0 | Read the description of a trait.
Hansen has a scar on his right arm. | closed choice | grade5 | natural science | biology | Traits and heredity | 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 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... | |
Not supported with pagination yet | Using only these supplies, which question can Bridgette investigate with an experiment? | [
"Does the basketball bounce higher on a lawn or on a dirt path?",
"Does the basketball bounce higher on gravel or on grass?",
"Do larger basketballs bounce higher than smaller basketballs on a brick patio?"
] | 1 | Bridgette gets a basketball for her birthday and dribbles it around her neighborhood. She notices that sometimes the ball bounces higher than other times. She wonders what factors affect how high her ball bounces. So, she decides to design an experiment. She has the following supplies available:
one basketball
access t... | closed choice | grade7 | 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 text uses the word disinterested in its traditional sense? | [
"Trudy is excellent in her position as class treasurer. She always manages to be disinterested in student council debates about the allocation of extracurricular funds.",
"Trudy is happy with her position as class treasurer. Though she would have the support of the student council, she is disinterested in running... | 0 | closed choice | grade9 | 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 disinterested in its traditional sense: unbiased or impartial.
Trudy is excellent in her position as class treasurer. She always manages to be disinterested in student council debates about the allocation of extracurricular funds.
The second text uses disinterested in its nontraditional sense: unint... | |
Not supported with pagination yet | Based on this information, what is this fruit fly's phenotype for the body color trait? | [
"a black body",
"bb"
] | 0 | In a group of fruit flies, some individuals have a gray body and others have a black body. In this group, the gene for the body color trait has two alleles. The allele B is for a gray body, and the allele b is for a black body.
A certain fruit fly from this group has a black body. This fly has two alleles for a black b... | closed choice | grade8 | 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. The fruit fly's observable version of the body color trait is a black body. So, the fly's phenotype for the body color trait is a black body. |
Which statement is supported by the map? | [
"The Silk Road connected only Asia and Europe.",
"The Silk Road allowed merchants to travel from Asia to the Americas.",
"The Silk Road included both land and sea routes."
] | 2 | The map below shows a network of trade routes known as the Silk Road. Between 200 BCE and 1350 CE, merchants, or traders, traveled along many parts of these routes.
Look at the map showing the Silk Road around 100 CE. Then answer the question below. | closed choice | grade7 | social science | world-history | The Silk Road | The ancient Silk Road: geography and transportation | |||
What is the name of the colony shown? | [
"Alabama",
"New Hampshire",
"Georgia",
"Mississippi"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Georgia. | |||
Is Nembrotha megalocera made up of one cell? | [
"no",
"yes"
] | 0 | This organism is Nembrotha megalocera. It is a member of the animal kingdom.
Nembrotha megalocera is commonly called a nudibranch. Like other nudibranchs, N. megalocera has a soft underside that is made up of a muscular foot. N. megalocera has a blue foot. | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Nembrotha megalocera is an animal. Animals are made up of many cells. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Kaylee is good at knitting scarves. | [
"acquired",
"inherited"
] | 0 | Hint: People who can knit had to learn how to do it. | 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... | People are not born knowing how to knit. Instead, many people learn how to knit. Knitting well takes practice. So, knitting well is an acquired trait. |
Not supported with pagination yet | Which figure of speech is used in this text?
"This mattress is as soft as concrete," Luke complained as he tested the bed in his hotel room. | [
"pun",
"verbal irony"
] | 1 | closed choice | grade10 | 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.
As soft as concrete shows verbal irony because concrete is not soft. | |
Not supported with pagination yet | Based on this information, what is this pea plant's genotype for the pea color gene? | [
"ee",
"green peas"
] | 0 | In a group of pea plants, some individuals have yellow peas and others have green peas. In this group, the gene for the pea color trait has two alleles. The allele E is for yellow peas, and the allele e is for green peas.
A certain pea plant from this group has green peas. This plant has two alleles for green peas. | 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 genotype for a gene is its combination of alleles for that gene. The pea plant has two alleles for green peas (e). So, the plant's genotype for the pea color gene is ee. |
Which animal's mouth is also adapted to eat plant matter? | [
"goat",
"Nile crocodile"
] | 0 | Blackbucks are herbivores, or plant eaters. They eat mostly grass. The 's mouth is adapted to grind up and eat plant matter.
Figure: blackbuck. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the blackbuck.
The blackbuck has long jaws and flat teeth. Its mouth is adapted to eat plant matter. The long jaws can help the blackbuck reach grass. The flat teeth can help it cut and grind up the food into soft pieces it can swallow.
Now look at each animal. Figure out which animal has a simil... | |
What evidence of a flood does this picture show? | [
"Much of the ground is covered by water.",
"There are many houses and trees."
] | 0 | This picture was taken during a flood. A flood can happen when an area gets a lot of rain in a short time. | closed choice | grade2 | natural science | earth-science | Earth events | Find evidence of changes to Earth's surface | Evidence is information that tells you something happened.
How do you look for evidence of a change to Earth's surface?
There are many ways to find evidence of a change to Earth's surface. One way is to look at a picture that was taken after the change.
Here are some examples of what the evidence for different changes ... | ||
Not supported with pagination yet | Does this passage describe the weather or the climate?
Shawna noticed that the wind was blowing in from the ocean this afternoon. | [
"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.
Shawna noticed that the wind was blowing in from the ocean this afternoon.
This passage tells you about the wind direction where Shawna was this afternoon. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
Not supported with pagination yet | Select the one animal that has all of the reptile traits listed above. | [
"Cardinalfish have scaly skin and live near coral reefs. Cardinalfish lay eggs with no shells and have fins that help them swim underwater.",
"American crocodiles often live where rivers flow into the ocean. In these places, the fresh water and salt water mix. This mixing creates the somewhat salty, or brackish, ... | 1 | Reptiles are a group of animals with similar traits. The following traits can be used to identify reptiles:
They have scaly, waterproof skin.
They make eggs with shells. Observe the animals and read the descriptions. | closed choice | grade5 | natural science | biology | Classification | Use evidence to classify mammals, birds, fish, reptiles, and amphibians | Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, sc... | To decide if an animal is part of a group, look at the traits of the group.
Reptiles have the following traits:
They have scaly, waterproof skin.
They make eggs with shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
An American crocodile has the fol... |
Not supported with pagination yet | Select the amphibian. | [
"fire salamander",
"gharial",
"green moray eel",
"whale shark"
] | 0 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Amphibians have moist skin and begin their lives in water. | A green moray eel is a fish. It lives underwater. It has fins, not limbs.
Eels are long and thin. They may have small fins. They look like snakes, but they are fish!
A whale shark is a fish. It lives underwater. It has fins, not limbs.
Whale sharks are the largest fish in the world! Adult whale sharks can weigh over 21... | |
What can Kenji and Tracy trade to each get what they want? | [
"Kenji can trade his tomatoes for Tracy's sandwich.",
"Tracy can trade her broccoli for Kenji's oranges.",
"Kenji can trade his tomatoes for Tracy's broccoli.",
"Tracy can trade her almonds for Kenji's tomatoes."
] | 2 | 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.
Kenji and Tracy open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Kenji wanted br... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Kenji wanted broccoli in his lunch and Tracy was hoping for tomatoes. Look at the labeled part of the images.
Kenji has tomatoes. Tracy 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. | ||
Not supported with pagination yet | Which object has more thermal energy? | [
"a 300-gram rock at a temperature of 120°F",
"a 300-gram rock at a temperature of 175°F"
] | 1 | 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 rocks have the same mass but different temperatures. Since the 175°F rock is hotter than the 120°F rock, it has more thermal energy. |
Which continent is highlighted? | [
"North America",
"Australia",
"Africa",
"Europe"
] | 1 | 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. | ||
Which bird's beak is also adapted to tear through meat? | [
"Cooper's hawk",
"cassowary"
] | 0 | Black vultures are scavengers. They find and eat the bodies of dead animals. The shape of the 's beak is adapted to tear through meat.
Figure: black vulture. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. ... | Look at the picture of the black vulture.
The black vulture has a sharp hooked beak. Its beak is adapted to tear through meat. The sharp hook can help the black vulture cut the meat into pieces it can swallow.
Now look at each bird. Figure out which bird has a similar adaptation.
The Cooper's hawk has a sharp hooked be... | |
Which trait did Ursus spelaeus have? Select the trait you can observe on the fossil. | [
"front and back legs",
"rounded ears",
"brown fur covering most of its body"
] | 0 | This picture shows a fossil of an ancient animal called Ursus spelaeus.
Ursus spelaeus went extinct about 24,000 years ago. Many Ursus spelaeus fossils have been found in caves. | closed choice | grade6 | natural science | earth-science | Fossils | Compare fossils to modern organisms | The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activiti... | ||
Not supported with pagination yet | Which tense does the sentence use?
Myra will play the guitar after dinner. | [
"past tense",
"future tense",
"present tense"
] | 1 | closed choice | grade5 | 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, play. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | Which would stretch the most? | [
"bone",
"wool scarf",
"glass bottle"
] | 1 | 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 wool scarf would stretch the most. If you pull the ends of a wool scarf, it will get longer. | |
Which of the following could Lindsey and Harper'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... | ||
Not supported with pagination yet | Select the animal. | [
"Oak trees can have thick branches.",
"Cherry trees can grow white or pink flowers.",
"Yellow jackets drink nectar and fruit.",
"Daffodils have a green stem."
] | 2 | closed choice | grade3 | 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... | An oak tree is a plant. It can have thick branches.
Acorns grow on oak trees. Acorns are small nuts with a seed inside.
A yellow jacket is an animal. It drinks nectar and eats fruit.
A yellow jacket is an insect. Yellow jackets have two wings.
A cherry tree is a plant. It can grow white or pink flowers.
Many types of c... | |
Not supported with pagination yet | Which tense does the sentence use?
Tony carefully spelled the word aloud. | [
"present tense",
"past tense",
"future 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 past tense. You can tell because it uses a past-tense verb, spelled. The verb ends in -ed and tells you about something that has already happened. | |
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 | 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 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2. | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade7 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in sample A has more mass than each particle in sample B. The particles in sample A also have a higher average speed than the particles in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average ... | |
Not supported with pagination yet | Compare the motion of three bicycles. Which bicycle was moving at the highest speed? | [
"a bicycle that moved 35miles east in 5hours",
"a bicycle that moved 70miles north in 5hours",
"a bicycle that moved 135miles north in 5hours"
] | 2 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects moving f... | Look at the distance each bicycle moved and the time it took to move that distance. The direction each bicycle moved does not affect its speed.
Notice that each bicycle moved for 5 hours. The bicycle that moved 135 miles moved the farthest distance in that time. So, that bicycle must have moved at the highest speed. | |
Not supported with pagination yet | What is the temperature of an ice cream sandwich? | [
"37°C",
"37°F"
] | 1 | Select the better estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Estimate temperatures | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Temperature can be written with units of degrees Fahrenheit (°F) or Celsius (°C). Use the list below to compare the two units.
212°F | Water boils | 100°C
98.6°F | Body temperature | 37°C
68°F ... | The better estimate for the temperature of an ice cream sandwich is 37°F.
37°C is too hot. |
Not supported with pagination yet | What information supports the conclusion that Farid inherited this trait? | [
"Farid's biological parents have wavy hair.",
"Farid's biological mother has long hair. Farid also has long hair.",
"Farid uses a headband to keep his wavy hair out of his face."
] | 0 | Read the description of a trait.
Farid has wavy hair. | closed choice | grade7 | 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 chemical formula for this molecule. | [
"HF",
"HeF",
"HF2O",
"HF2"
] | 0 | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Match chemical formulas to ball-and-stick models | Every substance around you is made up of atoms. Atoms can link together to form molecules. The links between atoms in a molecule are called chemical bonds. Different molecules are made up of different chemical elements, or types of atoms, bonded together.
Scientists use both ball-and-stick models and chemical formulas ... | H is the symbol for hydrogen. F is the symbol for fluorine. This ball-and-stick model shows a molecule with one hydrogen atom and one fluorine atom.
The chemical formula will contain the symbols H and F. There is one hydrogen atom, so H will not have a subscript. There is one fluorine atom, so F will not have a subscri... | ||
Which solution has a higher concentration of green particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 0 | The diagram below is a model of two solutions. Each green ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per millilit... | |
Not supported with pagination yet | Which figure of speech is used in this text?
Five years have passed;
Five summers, with the length of
Five long winters! And again I hear these waters . . .
—William Wordsworth, "Tintern Abbey" | [
"anaphora",
"euphemism"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure 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.
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 anaphora, the repetition of the same word or words at the beginning of several phrases or clauses.
Wordsworth repeats the word five at the beginning of each line. | |
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 | 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 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... | |
Not supported with pagination yet | What is the volume of a kitchen sink? | [
"30 liters",
"30 milliliters"
] | 0 | Select the better estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose metric units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters.... | The better estimate for the volume of a kitchen sink is 30 liters.
30 milliliters is too little. |
Not supported with pagination yet | Complete the statement. Assume that the water balloon's mass did not change.
The gravitational potential energy stored between the water balloon and Earth () as the water balloon fell toward John. | [
"stayed the same",
"increased",
"decreased"
] | 2 | Read the text about an object in motion.
Christine dropped a water balloon off a balcony. The water balloon fell toward her friend John, who was standing below the balcony. | closed choice | grade7 | natural science | physics | Kinetic and potential energy | Identify changes in gravitational potential energy | Gravitational potential energy is stored between any two objects. So, for every object on or near Earth, there is gravitational potential energy stored between the object and Earth.
The amount of gravitational potential energy stored between an object and Earth depends on the mass of the object. The amount of gravitati... | Think about how the distance between the water balloon and the center of Earth changed.
John was lower than the balcony. As the water balloon fell toward John, the distance between the water balloon and the center of Earth decreased. So, the gravitational potential energy stored between the water balloon and Earth decr... |
Not supported with pagination yet | Based on this information, what is this rose plant's genotype for the flower color gene? | [
"dark yellow flowers",
"ff"
] | 1 | In a group of rose plants, some individuals have light yellow flowers and others have dark yellow flowers. In this group, the gene for the flower color trait has two alleles. The allele F is for light yellow flowers, and the allele f is for dark yellow flowers.
A certain rose plant from this group has dark yellow flowe... | 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 genotype for a gene is its combination of alleles for that gene. The rose plant has two alleles for dark yellow flowers (f). So, the plant's genotype for the flower color gene is ff. |
What is the capital of Nevada? | [
"Las Vegas",
"Reno",
"Sacramento",
"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 | Which object has more thermal energy? | [
"a 7-kilogram block of steel at a temperature of 160°F",
"a 7-kilogram block of steel at a temperature of 235°F"
] | 1 | 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 blocks of steel have the same mass but different temperatures. Since the 235°F block is hotter than the 160°F block, it has more thermal energy. |
Not supported with pagination yet | Is teaching school 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 teaching school is a good or a service, ask these questions:
Is teaching school something you can touch? No.
Is teaching school a job you might pay someone else to do? Yes.
So, teaching school is a service. | |
Which months have average temperatures below 50°F? | [
"November through April",
"January through April",
"May through October"
] | 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 Denver, look at the graph.
Choice "Apr" is incorrect.
Choice "May" is incorrect.
Choice "Oct" is incorrect.
Choice "Nov" is incorrect.
Choice "Jan" is incorrect.
The average temperatures in November, December, January, February, March, and April are all below 50°F. So, Nove... | |
Which animal is also adapted for climbing trees? | [
"okapi",
"lar gibbon"
] | 1 | s live in rain forests on the island of Sumatra in Asia. They climb trees to find food and shelter. The orangutan's hands and feet are adapted for climbing trees.
Figure: Sumatran orangutan. | 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 Sumatran orangutan.
The Sumatran orangutan has long fingers and toes. It is adapted for climbing trees. The Sumatran orangutan uses its long fingers and toes to hold on to branches while climbing.
Now look at each animal. Figure out which animal has a similar adaptation.
The lar gibbon has lo... | |
Not supported with pagination yet | Compare the motion of two runners. Which runner was moving at a lower speed? | [
"a runner who moved 35miles in 5hours",
"a runner who moved 25miles in 5hours"
] | 1 | closed choice | grade2 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects movi... | Look at the distance each runner moved and the time it took to move that distance.
One runner moved 25 miles in 5 hours.
The other runner moved 35 miles in 5 hours.
Notice that each runner spent the same amount of time moving. The runner who moved 25 miles moved a shorter distance in that time. So, that runner must hav... | |
Which of these states is farthest south? | [
"Oregon",
"New York",
"Wisconsin",
"New Mexico"
] | 3 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the south arrow is pointing. New Mexico is farthest south. | ||
During this time, thermal energy was transferred from () to (). | [
"each vial . . . the surroundings",
"the surroundings . . . each vial"
] | 1 | Scientists in a laboratory were working with insulin, a protein often used to treat diabetes. They left two identical vials of insulin in different places. This table shows how the temperature of each vial changed over 15minutes. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each vial increased, which means that the thermal energy of each vial increased. So, thermal energy was transferred from the surroundings to each vial. | |
Not supported with pagination yet | What do these two changes have in common?
water boiling on a stove
a puddle freezing into ice on a cold night | [
"Both are caused by cooling.",
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by heating."
] | 1 | closed choice | grade3 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
Water boiling on the stove is a change of state. So, it is a physical change. The liquid changes into a gas, but a different type of matter is not formed.
A puddle freezing into ice on a cold night is a change of state. So, it is a physical change. Liquid water freezes and becomes solid... | |
Identify the question that Mackenzie's experiment can best answer. | [
"Are eggs more likely to float in fresh water or salty water?",
"Does the amount of water in a glass affect whether eggs sink or float in the water?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Mackenzie poured four ounces of water into each of six glasses. Mackenzie dissolved one tablespoon of salt in each of three glasses, and did not add salt to the other three. Then, Mackenzie placed an egg in one glass an... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Which logical fallacy is used in the text?
The school requires us to be on time. If you can't even obey this rule, then what's to stop you from doing something worse, like stealing? | [
"slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences",
"appeal to nature: the assumption that natural things are always good",
"bandwagon fallacy: the assumption that the popular choice is automatically correct"
] | 0 | closed choice | grade10 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that being late to school will lead to becoming a thief. However, this argument wrongly suggests that the inability to follow a rule about being on time to school will necessarily lead to the breaking of other rules. This illustrates a type of logical fallacy known as the slippery slope fallacy. | |
What is this aquatic mite's scientific name? | [
"Litarachna degiustii",
"Litarachna lopezae"
] | 1 | Scientists discovered this species of aquatic mite off the coast of Puerto Rico in 2014. The scientists named the mite after the singer Jennifer Lopez because they enjoyed listening to her music while writing about their discovery. | 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 Jennifer Lopez.
The word lopezae refers to Jennifer Lopez. So, this aquatic mite's scientific name is Litarachna lopezae. | |
Is the following statement about our solar system true or false?
The volume of Earth is more than ten times the volume of Mercury. | [
"true",
"false"
] | 0 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To determine if this statement is true, calculate the value of ten times the volume of Mercury.
Then compare the result to the volume of Earth. The volume of Earth is 1.08 x 10^12 km^3, which is greater than 6.08 x 10^11 km^3. So, the volume of Earth is more than ten times the volume of Mercury. | |
Which country is highlighted? | [
"Saint Vincent and the Grenadines",
"Grenada",
"Saint Lucia",
"Barbados"
] | 0 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Vincent and the Grenadines. | |||
Not supported with pagination yet | What kind of sentence is this?
She has a huge collection of marbles. | [
"declarative",
"interrogative"
] | 0 | closed choice | grade4 | 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. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence tells about something, and it ends with a period. It is a declarative sentence. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
When I learned the details of Sophia's Faustian bargain, I was in disbelief. | [
"literature",
"Roman mythology"
] | 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 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 | Which correctly shows the title of a movie? | [
"The Red Balloon",
"the Red Balloon"
] | 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 correct title is The Red Balloon. | |
Select the organism in the same species as the garden hyacinth. | [
"Camellia sasanqua",
"Sarracenia purpurea",
"Hyacinthus orientalis"
] | 2 | This organism is a garden hyacinth. Its scientific name is Hyacinthus orientalis. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A garden hyacinth's scientific name is Hyacinthus orientalis.
Sarracenia purpurea does not have the same scientific name as a garden hyacinth. So, Hyacinthus orientalis and Sarracenia purpurea are not in the same species.
Hyacinthus orientalis has the same scientific name as a garden hyacinth. So, these organisms are i... | |
What is the capital of Washington? | [
"Santa Fe",
"Olympia",
"Helena",
"Seattle"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Olympia is the capital of Washington. | |||
Not supported with pagination yet | Based on this information, what is Rollo's phenotype for the whisker type trait? | [
"straight whiskers",
"curved whiskers"
] | 0 | In a group of Syrian hamsters, some individuals have straight whiskers and others have curved whiskers. In this group, the gene for the whisker type trait has two alleles. The allele for straight whiskers (H) is dominant over the allele for curved whiskers (h).
Rollo is a Syrian hamster from this group. Rollo has the h... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | 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 ... | You need to determine Rollo's phenotype for the whisker type trait. First, consider the alleles in Rollo's genotype for the whisker type gene. Then, decide whether these alleles are dominant or recessive.
The allele for straight whiskers (H) is dominant over the allele for curved whiskers (h). This means H is a dominan... |
Not supported with pagination yet | What information supports the conclusion that Tucker acquired this trait? | [
"Tucker's friend taught him how to fly a kite.",
"Tucker's neighbor taught him how to repair a kite.",
"Tucker likes to fly a kite with his younger brother."
] | 0 | Read the description of a trait.
Tucker knows how to fly a kite. | closed choice | grade7 | 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.... | |
Which of the following could Kendall's test show? | [
"whether producing more insulin would help the bacteria grow faster",
"whether different types of bacteria would need different nutrients to produce insulin",
"whether she added enough nutrients to help the bacteria produce 20% more insulin"
] | 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... | ||
Not supported with pagination yet | Select the one animal that has all of the mammal traits listed above. | [
"Peregrine falcons are the fastest animals in the world! They use their wings to fly quickly and hunt prey. Peregrine falcons also have a beak and feathers. They hatch from eggs with speckled or spotted shells.",
"Western gorillas have black, gray, or brown fur. Adult males are sometimes called silverbacks becaus... | 1 | Mammals are a group of animals with similar traits. The following traits can be used to identify mammals:
They feed their offspring milk.
They have fur or hair. Observe the animals and read the descriptions. | closed choice | grade5 | natural science | biology | Classification | Use evidence to classify mammals, birds, fish, reptiles, and amphibians | Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, sc... | To decide if an animal is part of a group, look at the traits of the group.
Mammals have the following traits:
They feed their offspring milk.
They have fur or hair.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A peregrine falcon has the following trai... |
What is the capital of Washington? | [
"Juneau",
"Seattle",
"Olympia",
"Spokane"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | |||
Not supported with pagination yet | Using only these supplies, which question can Mabel investigate with an experiment? | [
"If squash seeds and tomato seeds are planted with compost, which type of plant grows larger?",
"Do squash plants grow larger if the seeds are planted in small pots or in large pots?",
"Do squash plants grow larger if the seeds are planted with compost or without compost?"
] | 2 | Mabel has a small vegetable garden, which includes a compost pile of food scraps. She notices that some of the squash plants growing next to the compost pile grow differently than squash plants that are farther away. She wonders what factors affect how her squash plants grow. So, she decides to design an experiment. Sh... | closed choice | grade7 | 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 | Based on this information, what is this fly's phenotype for the eye color trait? | [
"brown eyes",
"red eyes"
] | 0 | In a group of fruit flies, some individuals have red eyes and others have brown eyes. In this group, the gene for the eye color trait has two alleles. The allele for red eyes (E) is dominant over the allele for brown eyes (e).
A certain fruit fly from this group has the homozygous genotype ee for the eye color gene. | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | 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 ... | The fruit fly's genotype for the eye color gene is ee. The fruit fly's genotype of ee has only e alleles. The e allele is for brown eyes. So, the fruit fly's phenotype for the eye color trait must be brown eyes.
To check this answer, consider whether the fruit fly's alleles are dominant or recessive. The allele for red... |
Not supported with pagination yet | What is the volume of an eyedropper? | [
"4 liters",
"4 milliliters"
] | 1 | Select the better estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose metric units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters.... | The better estimate for the volume of an eyedropper is 4 milliliters.
4 liters is too much. |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Sahara Desert.
The Sahara Desert covers a large part of northern Africa. In 1984, the Sahara received less than one inch of rain over the entire year!
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.
The Sahara Desert covers a large part of northern Africa. In 1984, the Sahara received less than one inch of rain over the entire year!
The underlined part of the passage tells you about the amount of precipitation that fell in the Sahara Desert in 1984. This passage describes the atmosphere... | |
What is the capital of Louisiana? | [
"Albany",
"Baton Rouge",
"New Orleans",
"Tallahassee"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Baton Rouge is the capital of Louisiana. | |||
Not supported with pagination yet | How long does it take to wash your hands? | [
"2 minutes",
"2 seconds"
] | 0 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose units of time | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the... | The better estimate for how long it takes to wash your hands is 2 minutes.
2 seconds is too fast. |
What is the capital of New Mexico? | [
"Olympia",
"Santa Fe",
"Provo",
"Albuquerque"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Santa Fe is the capital of New Mexico. | |||
Select the bird below. | [
"tiger shark",
"poison dart frog",
"blue-footed booby",
"Mojave rattlesnake"
] | 2 | Birds have feathers, two wings, and a beak.
Birds are warm-blooded. Warm-blooded animals can control their body temperature.
A brown pelican is an example of a bird. | closed choice | grade4 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals. | A tiger shark is a fish. It lives underwater. It has fins, not limbs.
Tiger sharks are nocturnal. This means that they are active mostly at night.
A blue-footed booby is a bird. It has feathers, two wings, and a beak.
Blue-footed boobies live on tropical islands in the Pacific Ocean.
A poison dart frog is an amphibian.... | |
What is the expected ratio of offspring with bush growth to offspring with climbing growth? Choose the most likely ratio. | [
"2:2",
"0:4",
"4:0",
"3:1",
"1:3"
] | 0 | This passage describes the growth pattern trait in rose plants:
Climbing growth and bush growth are different growth patterns in rose plants. Rose plants with climbing growth have long, bendable stems that act like vines. These plants may grow upward to cover fences or walls. Rose plants with bush growth stay near the ... | 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 bush growth or climbing growth, consider whether each phenotype is the dominant or recessive allele's version of the growth pattern trait. The question tells you that the g allele, which is for bush growth, is recessive to the G allele, which is... | |
Which of these states is farthest east? | [
"New Mexico",
"Washington",
"North Dakota",
"Wyoming"
] | 2 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. North Dakota is farthest east. | ||
Not supported with pagination yet | Which of the following is a trait of a living thing? | [
"how much sunshine the living thing gets",
"how much water is in the living thing's habitat",
"the way the living thing looks"
] | 2 | closed choice | grade2 | natural science | biology | Traits | Introduction to adaptations | A trait is the way a living thing looks or acts. A habitat is the place where a living thing grows or lives.
An adaptation is a trait that helps a living thing stay alive in its habitat. | ||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
gate - goggles | [
"genuine",
"griddle"
] | 0 | closed choice | grade6 | 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 genuine is between the guide words gate - goggles, it would be found on that page. | |
Look at the models of molecules below. Select the elementary substance. | [
"fluorine",
"cyclopropane",
"carbon tetrachloride"
] | 0 | closed choice | grade6 | natural science | chemistry | Atoms and molecules | Identify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | |||
Not supported with pagination yet | Which correctly shows the title of a movie? | [
"\"All the King's Men\"",
"***All the King's Men***"
] | 1 | closed choice | grade5 | language science | punctuation | Formatting | Formatting titles | The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead.
A Midsummer Night's Dream
The title of a poem, song, article, or short story should be in quotation marks.
"You Are My Sunshine" | A movie should be in italics.
The correct title is **All the King's Men**. | |
Which of the following organisms is the producer in this food web? | [
"bat star",
"sea cucumber",
"black rockfish",
"phytoplankton"
] | 3 | 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... | Producers do not eat other organisms. So, in a food web, producers do not have arrows pointing to them from other organisms.
The kelp does not have any arrows pointing to it. So, the kelp is a producer.
The black rockfish has an arrow pointing to it, so it is not a producer.
The phytoplankton does not have any arrows p... | |
Which of these states is farthest west? | [
"Tennessee",
"Minnesota",
"New Jersey",
"Washington"
] | 3 | 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 west arrow is pointing. Washington is farthest west. | ||
Not supported with pagination yet | Which figure of speech is used in this text?
Study without thought is vain; thought without study is dangerous.
—Confucius, Analects | [
"chiasmus",
"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 chiasmus, an expression in which the second half parallels the first but reverses the order of words.
The second half of the sentence reverses the order of the words study and thought relative to the first half. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
couch - cupboard | [
"crane",
"chilly"
] | 0 | closed choice | grade6 | 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 crane is between the guide words couch - cupboard, it would be found on that page. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Bert has a scar on his left knee. | [
"inherited",
"acquired"
] | 1 | Hint: Most scars are caused by accidents during a person's life. | closed choice | grade3 | natural science | biology | 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... | Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait. |
Which two months have the same average temperature in Portland? | [
"September and October",
"July and August",
"April and May"
] | 1 | 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 Portland, look at the graph.
Choice "Apr" is incorrect.
Choice "May" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Sep" is incorrect.
Choice "Oct" is incorrect.
Out of all the answer choices, only July and August have the same average temperatu... | |
Not supported with pagination yet | Select the one animal that has all of the fish traits listed above. | [
"Salmon lay eggs with no shells at the bottom of freshwater streams. Salmon use their powerful fins to swim. They can even jump up small waterfalls!",
"Red salamanders do not have lungs! They can breathe through their moist, smooth skin. Adult red salamanders live near rivers or ponds. They lay eggs with no shell... | 0 | Fish are a group of animals with similar traits. The following traits can be used to identify fish:
They have fins, not limbs.
They make eggs with no shells. Observe the animals and read the descriptions. | closed choice | grade5 | natural science | biology | Classification | Use evidence to classify mammals, birds, fish, reptiles, and amphibians | Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, sc... | To decide if an animal is part of a group, look at the traits of the group.
Fish have the following traits:
They have fins, not limbs.
They make eggs with no shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A salmon has the following traits:
It has... |
Which of these states is farthest north? | [
"Missouri",
"Massachusetts",
"Maine",
"Florida"
] | 2 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Maine is farthest north. | ||
Not supported with pagination yet | Which is a run-on sentence? | [
"The fertilizer will help the plants grow.",
"Dad has a beard it is black and bushy."
] | 1 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence, a fragment, or a run-on? | A sentence is a group of words that forms a complete thought. It has both a subject and a verb.
My friends walk along the path.
A sentence fragment is a group of words that does not express a complete thought. It is usually missing a subject or a verb.
Knows the answer.
This is a sentence fragment. It is missing a subj... | Dad has a beard it is black and bushy is a run-on sentence. It has two sentences that are joined without end punctuation: Dad has a beard and It is black and bushy. |
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.