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Which type of relationship is formed when a cleaner wrasse eats parasites off a moray eel? | [
"commensal",
"mutualistic",
"parasitic"
] | 1 | Read the passage. Then answer the question.
Cleaner wrasse are small fish that live in tropical coral reefs. Wrasse are often visited by larger fish, such as moray eels.
When an eel visits a wrasse, the wrasse cleans the eel by eating parasites attached to the eel's body. If the parasites are not removed, the eel may ... | closed choice | grade7 | natural science | biology | Ecological interactions | Classify symbiotic relationships | When two organisms of different species interact in a way that affects one or both organisms, they form a symbiotic relationship. The word symbiosis comes from a Greek word that means living together. Scientists define types of symbiotic relationships based on how each organism is affected.
This table lists three commo... | When a cleaner wrasse removes parasites from a moray eel, the wrasse gets food that it needs to grow and survive. So, the wrasse benefits from its relationship with the eel.
The eel is stronger and less likely to die after the wrasse removes the parasites. So, the eel also benefits from its relationship with the wrasse... | |
What is the capital of Nevada? | [
"Carson City",
"Helena",
"Reno",
"Las Vegas"
] | 0 | 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 text uses the word nauseous in its traditional sense? | [
"Bella's little brother looked a little nauseous after eating mounds of candy and then going on the dizzying rides at the state fair.",
"Bella's little brother looked a little sick after eating mounds of candy and then going on the nauseous rides at the state fair."
] | 1 | closed choice | grade11 | 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 nauseous in its traditional sense: causing disgust or nausea.
Bella's little brother looked a little sick after eating mounds of candy and then going on the nauseous rides at the state fair.
The second text uses nauseous in its nontraditional sense: feeling disgusted or nauseated.
Bella's little bro... | |
Which bird's beak is also adapted to catch fish? | [
"Asian golden weaver",
"lesser noddy"
] | 1 | Snowy egrets live near wetlands and lakes. A large part of their diet is fish. The shape of the 's beak is adapted to catch fish.
Figure: snowy egret. | 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 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 snowy egret.
The snowy egret has a long, straight beak with a sharp tip. Its beak is adapted to catch fish. The snowy egret can use its beak to grab the slippery body of a fish underwater. It can also catch a fish by stabbing it with its beak.
Now look at each bird. Figure out which bird has ... | |
What is the capital of Washington? | [
"Oklahoma City",
"Richmond",
"Olympia",
"Sacramento"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | |||
Not supported with pagination yet | What does this Works Cited entry indicate about the cited work?
Verducci, Tom. "David Ortiz on Cubs' Kris Bryant and Why Hitting Is Harder than Ever." Sports Illustrated 28 Apr. 2015: n. pag. Web. 10 May 2015. | [
"It doesn't have a date of publication.",
"The author's first name is Tom.",
"The author's first name is David."
] | 1 | closed choice | grade11 | language science | reference-skills | Research skills | Understand a Works Cited entry (MLA 7th edition) | When writing research papers, you will often be asked to follow a particular style guide for your citations. One popular style guide is the Modern Language Association (MLA) Handbook.
Below are the basic formats for some common types of Works Cited entries. Consult the MLA Handbook for a complete list.
Books:
Format | ... | Look closely at the Works Cited entry:
Verducci, Tom. "David Ortiz on Cubs' Kris Bryant and Why Hitting Is Harder than Ever." Sports Illustrated 28 Apr. 2015: n. pag. Web. 10 May 2015.
You can tell that the author's first name is Tom because the author's name appears last name first at the beginning of the entry. | |
Not supported with pagination yet | Which is a complete sentence? | [
"In the early morning, three fishermen climbed into their boats.",
"Will change out of her wet pants and shirt."
] | 0 | 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... | In the early morning, three fishermen climbed into their boats is a complete sentence. The subject is three fishermen, and the verb is climbed. | |
In this experiment, which were part of an experimental group? | [
"the apple slices covered with lemon juice",
"the plain apple slices"
] | 0 | The passage below describes an experiment.
The in Tammy's lunch always turned brown by lunchtime. Tammy's favorite cooking website said that pouring lemon juice on the would keep them from turning brown so quickly.
Tammy cut an apple into eight slices. She poured two tablespoons of lemon juice over four of the slice... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify control and experimental groups | Experiments have variables, or parts that change. You can design an experiment to investigate whether changing a variable between different groups has a specific outcome.
For example, imagine you want to find out whether adding fertilizer to soil affects the height of pea plants. You could investigate this question wit... | In this experiment, Tammy investigated whether lemon juice affects how quickly apple slices turn brown. So, the apple slices covered with lemon juice were part of an experimental group.
The plain apple slices did not get lemon juice. So, they were not part of an experimental group. | |
Not supported with pagination yet | Which tense does the sentence use?
Dean stirred the sauce on the stove. | [
"past tense",
"future tense",
"present tense"
] | 0 | 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, stirred. The verb ends in -ed and tells you about something that has already happened. | |
Which of these states is farthest east? | [
"Washington",
"Florida",
"New Hampshire",
"Tennessee"
] | 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. New Hampshire is farthest east. | ||
Identify the question that Danny's experiment can best answer. | [
"Can pennies hold more drops of pure water or water mixed with hand soap?",
"Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Danny used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. Danny recorded the number of drops he could add before the wa... | 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 organ gives the body its shape? | [
"skeleton",
"lungs",
"heart"
] | 0 | closed choice | grade3 | natural science | biology | Animals | Human organs and their functions | |||
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Though Mr. Landry loved the old house's charming kitchen, it was in serious need of repair.",
"The old house was in serious need of repair, but Mr. Landry loved its charming kitchen."
] | 0 | closed choice | grade7 | language science | writing-strategies | Pronouns and antecedents | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The first answer choice contains a vague pronoun reference. The pronoun it could refer to the house or the kitchen.
Though Mr. Landry loved the old house's charming kitchen, it was in serious need of repair.
The second answer choice shows a possible correction for the vague pronoun reference. The text has been rewritte... | |
Not supported with pagination yet | Which text uses the word terribly in its traditional sense? | [
"Hassan shivered terribly as he gazed at the snow-clad slope. After calming his nerves, he began his descent.",
"Hassan shivered as he gazed at the terribly steep, snowy slope. After calming his nerves, he began his descent."
] | 0 | closed choice | grade12 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The second text uses terribly in its traditional sense: in a terrible manner.
Hassan shivered terribly as he gazed at the snow-clad slope. After calming his nerves, he began his descent.
The first text uses terribly in its nontraditional sense: extremely; very.
Hassan shivered as he gazed at the terribly steep, snowy s... | |
Is hornblende a mineral? | [
"yes",
"no"
] | 0 | Hornblende has the following properties:
not made by living things
naturally occurring
fixed crystal structure
pure substance
solid | yes or no | grade5 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Hornblende has all the properties of a mineral. So, hornblende is a mineral. | |
Not supported with pagination yet | How long is a guitar? | [
"33 inches",
"33 feet",
"33 miles",
"33 yards"
] | 0 | Select the best estimate. | closed choice | grade8 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of a guitar is 33 inches.
33 feet, 33 yards, and 33 miles are all too long. |
Which of these continents does the prime meridian intersect? | [
"Africa",
"North America",
"Asia"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Africa. It does not intersect North America or Asia. | ||
Not supported with pagination yet | How long is a road from one end of a city to the other? | [
"2 miles",
"2 feet",
"2 yards",
"2 inches"
] | 0 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of a road from one end of a city to the other is 2 miles.
2 inches, 2 feet, and 2 yards are all too short. |
What is the capital of Kentucky? | [
"Little Rock",
"Sacramento",
"Raleigh",
"Frankfort"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | |||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
citizen - coil | [
"clerk",
"churn"
] | 0 | closed choice | grade3 | 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 clerk is between the guide words citizen - coil, it would be found on that page. | |
Not supported with pagination yet | Which tense does the sentence use?
The cook puts beans in the soup. | [
"present tense",
"past tense",
"future tense"
] | 0 | closed choice | grade3 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, puts. The verb ends in -s and tells you about something that is true or happening now. | |
Not supported with pagination yet | Which phrase has a more positive connotation? | [
"having a meal",
"having a feast"
] | 1 | closed choice | grade4 | language science | vocabulary | Shades of meaning | Positive and negative connotation | Connotation is the feeling or idea that goes along with a word or phrase. Some words are close in meaning but have different connotations.
For example, think about the words eager and impatient. They both mean wanting something to happen, but they have different connotations.
Eager has a positive connotation. It is a n... | Having a feast has a more positive connotation. A feast is a large meal that celebrates something. | |
What is the capital of Idaho? | [
"Carson City",
"Nampa",
"Boise",
"Sacramento"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Boise is the capital of Idaho. | |||
Complete the sentence.
The Aleutian Trench formed at a () boundary. | [
"convergent",
"divergent",
"transform"
] | 0 | Read the passage and look at the picture.
The Aleutian Trench extends 2,900 kilometers along the floor of the Pacific Ocean between Alaska and Russia. At this deep-sea trench, the Pacific Plate and the North American Plate are moving toward each other. As the two plates collide, the Pacific Plate subducts, or sinks, be... | closed choice | grade8 | natural science | earth-science | Plate tectonics | Describe tectonic plate boundaries around the world | The outer layer of Earth is broken up into many pieces called tectonic plates, or simply plates. The breaks between plates are called plate boundaries. Plate boundaries are classified by the way the plates are moving relative to each other:
At a divergent boundary, two plates are moving away from each other.
At a trans... | To figure out what type of plate boundary formed the Aleutian Trench, you need to know how the tectonic plates interacted. To find this out, read the passage carefully.
The Aleutian Trench extends 2,900 kilometers along the floor of the Pacific Ocean between Alaska and Russia. At this deep-sea trench, the Pacific Plate... | |
Not supported with pagination yet | How long is a road from one end of a city to the other? | [
"8 centimeters",
"8 kilometers"
] | 1 | Select the better estimate. | closed choice | grade2 | natural science | units-and-measurement | Units and measurement | Choose metric units of distance | 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 a pencil is 16 long. You might be thinking, 16 what? Is the pencil 16 centimeters long? 16 meters? 16 kilometers?
The number 16 on its own does not give you much informa... | The better estimate for the length of a road from one end of a city to the other is 8 kilometers.
8 centimeters is too short. |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Scott went on to calculus after studying trigonometry, but he never fully comprehended calculus.",
"Scott went on to calculus after studying trigonometry, but he never fully comprehended it."
] | 1 | closed choice | grade10 | language science | writing-strategies | Pronouns | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The second answer choice contains a vague pronoun reference. The pronoun it could refer to calculus or trigonometry.
The first answer choice shows a possible correction for the vague pronoun reference. It has been replaced with calculus.
Scott went on to calculus after studying trigonometry, but he never fully comprehe... | |
Which property do these three objects have in common? | [
"slippery",
"stretchy",
"scratchy"
] | 0 | Select the best answer. | closed choice | grade3 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A slippery object is hard to hold onto or stand on. All three objects are slippery.
A stretchy object gets longer when you pull on it. None of the objects are stretchy.
A scratchy object is rough and itchy against your skin. None of the objects are s... | |
Not supported with pagination yet | Complete the sentence.
Dissolving sugar in water is a (). | [
"chemical change",
"physical change"
] | 1 | 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... | Dissolving sugar in water is a physical change. The sugar breaks into pieces that are too small to see. But each piece is still made of sugar. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
few - freight | [
"fortress",
"family"
] | 0 | closed choice | grade8 | 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 fortress is between the guide words few - freight, it would be found on that page. | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"sample A",
"neither; the samples have the same temperature"
] | 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 | What information supports the conclusion that Zack acquired this trait? | [
"Some scars fade more quickly than others.",
"Zack's scar was caused by an accident. He cut his arm when he fell off his bicycle."
] | 1 | Read the description of a trait.
Zack has a scar on his right arm. | closed choice | grade4 | 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 | Would you find the word librarian on a dictionary page with the following guide words?
laid - looked | [
"yes",
"no"
] | 0 | yes or no | 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 librarian is between the guide words laid - looked, it would be found on that page. | |
Not supported with pagination yet | Select the part whose main job is to control which substances enter and leave an animal cell. | [
"mitochondria",
"cell membrane",
"vacuoles"
] | 1 | closed choice | grade4 | natural science | biology | Cells | Identify functions of animal cell parts | The cell membrane controls which substances enter and leave the cell. The cell membrane also protects the cell from the outside environment.
The cytoplasm is made up of a thick liquid that fills the space inside the cell membrane. The cytoplasm supports the other cell parts and holds them in place. Many important chemi... | The cell membrane is a thin layer that wraps around the cytoplasm.
Every cell has a cell membrane. In an animal cell, the cell membrane is the outer layer. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Bryant has a scar on his right leg. | [
"acquired",
"inherited"
] | 0 | Hint: Most scars are caused by accidents during a person's life. | 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... | 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. |
Not supported with pagination yet | Based on this information, what is Lollipop's genotype for the fur texture gene? | [
"ff",
"wavy fur"
] | 0 | In a group of Syrian hamsters, some individuals have straight fur and others have wavy fur. In this group, the gene for the fur texture trait has two alleles. The allele F is for straight fur, and the allele f is for wavy fur.
Lollipop, a Syrian hamster from this group, has wavy fur. Lollipop has two alleles for wavy f... | closed choice | grade7 | 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. Lollipop has two alleles for wavy fur (f). So, Lollipop's genotype for the fur texture gene is ff. |
Not supported with pagination yet | What do these two changes have in common?
water evaporating from a lake
cooking a pancake | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes."
] | 1 | closed choice | grade4 | 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 evaporating from a lake 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.
Cooking a pancake is a chemical change. Pancakes are made from pancake batter. A cooked pancake is a different type of matter tha... | |
Select the mammal below. | [
"human",
"pelican"
] | 0 | Mammals have hair or fur and feed their young milk. A kangaroo is an example of a mammal. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A pelican is a bird. It has feathers, two wings, and a beak.
A human is a mammal. It has hair and feeds its young milk. | |
Which property do these three objects have in common? | [
"hard",
"sweet",
"opaque"
] | 0 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
An opaque object does not let light through. The trombone and the wooden ruler are opaque, but the glass flask is not.
Sugar has a sweet taste. The trombone is not sweet.
A hard object does not change shape when pressed or squeezed. All three objects... | |
Not supported with pagination yet | Based on this information, what is Audrey's genotype for the Thomsen disease gene? | [
"having Thomsen disease",
"MM"
] | 1 | This passage describes the Thomsen disease trait in humans:
In a group of humans, some individuals have Thomsen disease and others do not. In this group, the gene for the Thomsen disease trait has two alleles. The allele M is for having Thomsen disease, and the allele m is for not having Thomsen disease.
Audrey, a hum... | 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 genotype for a gene is its combination of alleles for that gene. Audrey has two alleles for having Thomsen disease (M). So, Audrey's genotype for the Thomsen disease gene is MM. |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: New Zealand.
Dry air has a lower level of humidity than moist air. The air around these volcanoes is usually dry and cold throughout the 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 | grade5 | 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.
Dry air has a lower level of humidity than moist air. The air around these volcanoes is usually dry and cold throughout the year.
The underlined part of the passage tells you about the usual pattern of humidity around the volcanoes. This passage does not describe what the weather is like on ... | |
Not supported with pagination yet | Compare the motion of two bats. Which bat was moving at a lower speed? | [
"a bat that moved 95kilometers in 5hours",
"a bat that moved 115kilometers in 5hours"
] | 0 | 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 kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects... | Look at the distance each bat moved and the time it took to move that distance.
One bat moved 95 kilometers in 5 hours.
The other bat moved 115 kilometers in 5 hours.
Notice that each bat spent the same amount of time moving. The bat that moved 95 kilometers moved a shorter distance in that time. So, that bat must have... | |
Which ocean is highlighted? | [
"the Indian Ocean",
"the Arctic Ocean",
"the Atlantic Ocean",
"the Southern Ocean"
] | 1 | closed choice | grade7 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Arctic Ocean. | ||
Not supported with pagination yet | Complete the sentence so that it uses personification.
"You might think you'll always be young," Mrs. Blake counseled, "but time ()". | [
"affects everyone",
"creeps up on you"
] | 1 | closed choice | grade9 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the phrase creeps up on you. It describes time as if it were a sneaky person. | |
What is the capital of Illinois? | [
"Springfield",
"Chicago",
"Sacramento",
"Newport"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Springfield is the capital of Illinois. | |||
Not supported with pagination yet | Which text uses the word literally in its traditional sense? | [
"The curry that the chef prepared was so spicy that Matt's mouth was literally on fire by the time he finished his meal.",
"The curry that the chef prepared was so spicy that Matt literally had to drink three glasses of milk to ease the pain."
] | 1 | closed choice | grade12 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The first text uses literally in its traditional sense: in a factual, non-exaggerated way.
The curry that the chef prepared was so spicy that Matt literally had to drink three glasses of milk to ease the pain.
The second text uses literally in its nontraditional sense: nearly or in effect (often exaggerated). Matt's mo... | |
Not supported with pagination yet | Based on this information, what is Peck's genotype for the body feather color gene? | [
"bb",
"blue body feathers"
] | 0 | In a group of budgerigar parakeets, some individuals have green body feathers and others have blue body feathers. In this group, the gene for the body feather color trait has two alleles. The allele B is for green body feathers, and the allele b is for blue body feathers.
Peck, a budgerigar parakeet from this group, ha... | closed choice | grade7 | 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. Peck has two alleles for blue body feathers (b). So, Peck's genotype for the body feather color gene is bb. |
Not supported with pagination yet | What do these two changes have in common?
mixing sand and gravel
cracking open a peanut | [
"Both are chemical changes.",
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes."
] | 3 | 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.
Mixing sand and gravel is a physical change. Together, the sand and gravel make a mixture. But making this mixture does not form a different type of matter.
Cracking open a peanut is a physical change. The peanut shell breaks and the peanut falls out. Both are still made of the same typ... | |
Not supported with pagination yet | What is the volume of a coffee pot? | [
"2 milliliters",
"2 liters"
] | 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 a coffee pot is 2 liters.
2 milliliters is too little. |
What is the capital of Maine? | [
"Lexington",
"Louisville",
"Portland",
"Augusta"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | |||
Not supported with pagination yet | Which closing is correct for a letter? | [
"yours truly,\nBecky",
"Yours truly,\nBecky"
] | 1 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Select the vertebrate. | [
"saturn butterfly",
"metallic tarantula",
"sunfish",
"weaver ant"
] | 2 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade5 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A saturn butterfly is an insect. Like other insects, a saturn butterfly is an invertebrate. It does not have a backbone. It has an exoskeleton.
A weaver ant is an insect. Like other insects, a weaver ant is an invertebrate. It does not have a backbone. It has an exoskeleton.
A sunfish is a fish. Like other fish, a sunf... |
What is the capital of Wyoming? | [
"Cheyenne",
"Boise",
"Pierre",
"Baton Rouge"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Cheyenne is the capital of Wyoming. | |||
Complete the sentence.
The Mid-Atlantic Ridge formed at a () boundary. | [
"divergent",
"transform",
"convergent"
] | 0 | Read the passage and look at the picture.
The Mid-Atlantic Ridge is a massive mountain chain that runs along the floor of the Atlantic Ocean. On this map, the ridge is shown by the light blue area between Africa and South America. The dark blue areas on either side of the ridge show deeper regions of the ocean.
The Mid... | closed choice | grade8 | natural science | earth-science | Plate tectonics | Describe tectonic plate boundaries around the world | The outer layer of Earth is broken up into many pieces called tectonic plates, or simply plates. The breaks between plates are called plate boundaries. Plate boundaries are classified by the way the plates are moving relative to each other:
At a transform boundary, two plates are sliding past each other.
At a convergen... | To figure out what type of plate boundary formed the Mid-Atlantic Ridge, you need to know how the tectonic plates interacted. To find this out, read the passage carefully.
The Mid-Atlantic Ridge is a massive mountain chain that runs along the floor of the Atlantic Ocean. On this map, the ridge is shown by the light blu... | |
Not supported with pagination yet | What information supports the conclusion that Jordan acquired this trait? | [
"Some scars fade more quickly than others.",
"Jordan's scar was caused by an accident. He cut his arm when he fell off his bicycle."
] | 1 | Read the description of a trait.
Jordan has a scar on his right arm. | closed choice | grade3 | natural science | biology | 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 | Which sentence uses a simile? | [
"The wave was a towering wall rising from the sea.",
"The wave rose from the sea like a towering wall."
] | 1 | closed choice | grade4 | language science | figurative-language | Literary devices | Identify similes and metaphors | Similes and metaphors are figures of speech that compare two things that are not actually alike.
A simile compares two things by saying that one is like the other. Similes often use the words like and as.
My sister runs like a cheetah.
The sister's running and a cheetah's running are compared using the word like.
A che... | This sentence uses a simile:
The wave rose from the sea like a towering wall.
The words wave and wall are compared using the word like.
This sentence uses a metaphor:
The wave was a towering wall rising from the sea.
The words wave and wall are compared without the word like or as. | |
What is the capital of Nebraska? | [
"Santa Fe",
"Lincoln",
"Omaha",
"Bismarck"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Lincoln is the capital of Nebraska. | |||
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The north pole of one magnet is closest to the south pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Sharon insisted that her dog wasn't fat; she said that he was merely well-fed. | [
"euphemism",
"hyperbole"
] | 0 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Well-fed is an indirect way of saying overweight. | |
Not supported with pagination yet | How long does it take for an airplane to cross the Atlantic Ocean? | [
"5 minutes",
"5 hours"
] | 1 | 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 for an airplane to cross the Atlantic Ocean is 5 hours.
5 minutes is too fast. |
Not supported with pagination yet | Does this passage describe the weather or the climate?
Where Oliver lives, the wind often blows in from the nearby hills. | [
"climate",
"weather"
] | 0 | 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.
Where Oliver lives, the wind often blows in from the nearby hills.
This passage tells you about the usual wind pattern where Oliver lives. It does not describe what the weather is like on a particular day. So, this passage describes the climate. |
Not supported with pagination yet | Which text structure does the text use? | [
"descriptive",
"sequential"
] | 0 | Read the text.
A tropical rain forest is a particular type of forest. It's a tall, thick jungle located in a hot region with plenty of rain. Rain forests are home to many different life forms. Indeed, as many as thirty million different kinds of plants and animals live in rain forests. Among these are the plants that p... | closed choice | grade4 | language science | writing-strategies | Text structure | Identify text structures | Writers can organize their ideas in different ways. These ways of organizing writing are called text structures. When you can tell how a text is organized, it's easier to understand how the writer's ideas go together. You can also use these text structures to organize your own writing.
| Text structure | Where you mig... | The text uses a descriptive structure to show facts about rain forests. In the text, certain words and phrases help to organize ideas in a descriptive structure. Notice the words indeed and also and the phrase among these. |
Not supported with pagination yet | How long does it take to cook a turkey in the oven? | [
"5 hours",
"5 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 cook a turkey in the oven is 5 hours.
5 seconds is too fast. |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magni... | |
Not supported with pagination yet | Select the mixture. | [
"pretzel",
"silver"
] | 0 | closed choice | grade2 | natural science | physics | Mixtures | Identify mixtures | A pure substance is made of only one type of matter.
A mixture is made of two or more types of matter mixed together. | ||
Is a kimono a solid, a liquid, or a gas? | [
"a solid",
"a gas",
"a liquid"
] | 0 | closed choice | grade4 | natural science | physics | States of matter | Identify and sort solids, liquids, and gases | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | A kimono is a solid. You can fold a kimono. But it will still have a size and shape of its own. | ||
Why are puffins sometimes called clowns of the sea? | [
"Puffins have colorful faces.",
"Puffins make funny faces."
] | 0 | Read the passage about puffins.
Puffins are small, colorful birds that live mostly at sea. They are sometimes called clowns of the sea because of how they look. They have bright, colorful faces with large orange beaks.
Puffins use their wings to fly fast. They also use their wings to swim through the water and dive for... | closed choice | grade2 | language science | reading-comprehension | Independent reading comprehension | Read and understand informational passages | Look at the passage. It tells you why puffins are called clowns of the sea.
Puffins are small, colorful birds that live mostly at sea. They are sometimes called clowns of the sea because of how they look. They have bright, colorful faces with large orange beaks. | ||
Not supported with pagination yet | What information supports the conclusion that Michelle inherited this trait? | [
"Michelle and her biological father wear sunglasses when they go outside.",
"Michelle's neighbor has green eyes.",
"Michelle has green eyes like her biological mother."
] | 2 | Read the description of a trait.
Michelle has green eyes. | closed choice | grade8 | 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.... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 2.",
"The magnetic force is weaker in Pair 1.",
"The strength of the magnetic force is the same in both pairs."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 2 are farther apart than the magnets in Pair 1. So, the magnetic force is weaker in Pair 2 than in Pair 1. | |
Not supported with pagination yet | How long is the Panama Canal? | [
"50 feet",
"50 inches",
"50 yards",
"50 miles"
] | 3 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of the Panama Canal is 50 miles.
50 inches, 50 feet, and 50 yards are all too short. |
Not supported with pagination yet | According to Newton's third law, what other force must be happening? | [
"The suitcase is pulling on Jamal.",
"The suitcase is pushing on Jamal."
] | 0 | 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:
Jamal 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... | Jamal is pulling on the suitcase. So, Newton's third law tells you that the suitcase is pulling on Jamal. |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. | |
Not supported with pagination yet | Select the animal. | [
"Chili peppers have green leaves.",
"Apple trees can grow fruit.",
"Brown pelicans eat fish.",
"Cedar trees have small leaves."
] | 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... | A chili pepper is a plant. It has many green leaves.
Chili peppers give food a spicy flavor.
A cedar tree is a plant. It has small leaves.
Cedar trees grow in many parts of the world. Many cedar trees grow on mountains.
A brown pelican is an animal. It eats fish.
A brown pelican is a bird. Brown pelicans live near wate... | |
Is andesite a mineral? | [
"no",
"yes"
] | 0 | Andesite has the following properties:
not made by organisms
not a pure substance
found in nature
no fixed crystal structure
solid | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Andesite does not have all the properties of a mineral. So, andesite is not a mineral. | |
Not supported with pagination yet | What kind of sentence is this?
How many articles did Clarence write before his publisher offered him a book contract? | [
"declarative",
"exclamatory",
"interrogative"
] | 2 | closed choice | grade7 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement, and it always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An interrogative sentence is a question, and it always ends with a question mark.
Do you have any plans for the upcoming... | The sentence asks something, and it ends with a question mark. It is an interrogative sentence. | |
Not supported with pagination yet | Is this a sentence fragment?
Based on one theory, Mimas, one of Saturn's many moons, may have been created within that planet's icy rings. | [
"yes",
"no"
] | 1 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify sentence fragments | A sentence is a group of words that expresses a complete thought.
The band I'm in has been rehearsing daily because we have a concert in two weeks.
A sentence fragment is a group of words that does not express a complete thought.
Rehearsing daily because we have a concert in two weeks.
This fragment is missing a subjec... | This is not a sentence fragment. It is a complete sentence because it expresses a complete thought.
Based on one theory, Mimas, one of Saturn's many moons, may have been created within that planet's icy rings. | |
Which is the main persuasive appeal used in this ad? | [
"pathos (emotion)",
"ethos (character)",
"logos (reason)"
] | 2 | closed choice | grade7 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to logos, or reason. It argues that purchasing paper from Cheaper Paper Depot is a smarter financial decision. | ||
Not supported with pagination yet | Which closing is correct for a letter? | [
"Many thanks,\nAriana",
"many thanks,\nAriana"
] | 0 | closed choice | grade4 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | What is the mass of a full bag of groceries? | [
"2 grams",
"2 kilograms"
] | 1 | Select the better estimate. | closed choice | grade5 | 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 a full bag of groceries is 2 kilograms.
2 grams is too light. |
What is the name of the colony shown? | [
"Pennsylvania",
"Indiana",
"Virginia",
"Delaware"
] | 0 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Pennsylvania. | |||
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"\"This morning, the newspaper said that Maria Montgomery won the mayoral election in Springtown,\" Adam remarked to his sister.",
"\"This morning, it said that Maria Montgomery won the mayoral election in Springtown,\" Adam remarked to his sister."
] | 1 | closed choice | grade11 | language science | writing-strategies | Pronouns | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The first answer choice contains a vague pronoun reference. The pronoun it is used without its antecedent.
The second answer choice shows a possible correction for the vague pronoun reference. It has been replaced with the newspaper.
"This morning, the newspaper said that Maria Montgomery won the mayoral election in Sp... | |
Not supported with pagination yet | Based on this information, what is Salsa's genotype for the fur length gene? | [
"short fur",
"Ff"
] | 1 | In a group of cats, 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 F is for short fur, and the allele f is for long fur.
Salsa, a cat from this group, has short fur. Salsa has one allele for short fur and one allele for long fur. | 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. Salsa has one allele for short fur (F) and one allele for long fur (f). So, Salsa's genotype for the fur length gene is Ff. |
Complete the statement.
Diamond is (). | [
"an elementary substance",
"a compound"
] | 0 | The model below represents diamond. Diamond is commonly used to make jewelry but is also used in tools that can cut or polish any material. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether diamond is an elementary substance or a compound.
Step 1: Interpret the model.
In the ball-and-stick model shown above, all of the balls are the same color:
. The legend shows that dark gray represents the chemical element with the atomic symbol C. C is the atomic symbol for the chemi... | |
Not supported with pagination yet | Compare the motion of three geese. Which goose was moving at the highest speed? | [
"a goose that moved 280kilometers west in 5hours",
"a goose that moved 350kilometers east in 5hours",
"a goose that moved 375kilometers 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 kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each goose moved and the time it took to move that distance. The direction each goose moved does not affect its speed.
Notice that each goose moved for 5 hours. The goose that moved 375 kilometers moved the farthest distance in that time. So, that goose must have moved at the highest speed. | |
Not supported with pagination yet | Select the animal that has a backbone. | [
"redback spider",
"flounder"
] | 1 | Hint: Mammals, birds, fish, reptiles, and amphibians all have backbones. | closed choice | grade2 | natural science | biology | Classification | Identify animals with and without backbones | Some animals have a backbone. The backbone is made of many bones in an animal's back. An animal's backbone helps connect the different parts of its body. In the drawings below, each animal's backbone is colored orange.
Other animals do not have a backbone. In fact, these animals don't have any bones! Some animals witho... | A flounder is a fish. Like other fish, a flounder has a backbone.
Like other spiders, a redback spider does not have a backbone. It has a hard outer cover. |
Select the organism in the same genus as the maroon clownfish. | [
"Premnas biaculeatus",
"Procambarus clarkii",
"Amphiprion melanopus"
] | 0 | This organism is a maroon clownfish. Its scientific name is Premnas biaculeatus. | closed choice | grade7 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A maroon clownfish's scientific name is Premnas biaculeatus. The first word of its scientific name is Premnas.
Procambarus clarkii is in the genus Procambarus. The first word of its scientific name is Procambarus. So, Procambarus clarkii and Premnas biaculeatus are not in the same genus.
This organism and the maroon cl... | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"neither; the samples have the same temperature",
"sample A"
] | 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... | Each particle in sample B has more mass than each particle in sample A. The particles in sample B also have a higher average speed than the particles in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average ... | |
What type of rock is slate? | [
"igneous",
"sedimentary",
"metamorphic"
] | 2 | This is a piece of slate. Slate usually forms from a sedimentary rock called shale. Slate can form when shale is changed by high temperature and pressure.
Slate is usually dark-colored. The word blackboard comes from the color of slate. Decades ago, blackboards were made of black slate. | closed choice | grade7 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together, or compacted, to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when ... | Slate is a metamorphic rock. Like other metamorphic rocks, it forms when a rock is changed by high temperature and pressure.
Heat and pressure can change the type and arrangement of minerals in a rock. This change forms a new rock with different properties. Slate can form when sedimentary rocks such as shale are change... | |
Which bird's beak is also adapted to tear through meat? | [
"bufflehead",
"turkey vulture"
] | 1 | s are scavengers. They find and eat the bodies of dead animals. The shape of the 's beak is adapted to tear through meat.
Figure: California condor. | 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 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 California condor.
The California condor has a sharp hooked beak. Its beak is adapted to tear through meat. The sharp hook can help the California condor cut the meat into pieces it can swallow.
Now look at each bird. Figure out which bird has a similar adaptation.
The turkey vulture has a sh... | |
Is pumice a mineral or a rock? | [
"rock",
"mineral"
] | 0 | Pumice has the following properties:
has many small holes
solid
not made by living things
found in nature
no fixed crystal structure
not a pure substance | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | The properties of pumice match the properties of a rock. So, pumice is a rock. | |
Not supported with pagination yet | Which announcement is more formal? | [
"The Belmont Law Firm is so happy to tell you . . .",
"The Belmont Law Firm is pleased to announce . . ."
] | 1 | closed choice | grade9 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The second announcement is more formal. It uses more elevated language (pleased to announce). The other announcement sounds more conversational (so happy). | |
What can happen when an egg is fertilized? | [
"It can make pollen.",
"It can grow into a mature fern."
] | 1 | This diagram shows the life cycle of a fern. | closed choice | grade7 | natural science | biology | Plant reproduction | Moss and fern life cycles | Fern plants reproduce using both asexual reproduction and sexual reproduction.
Mature ferns have flat leaves called fronds. Ferns have structures that look like small dots on the underside of their fronds. These structures are called spore cases. The mature ferns use asexual reproduction to make spores. When the spore ... | A fertilized egg can grow into a mature fern.
Ferns do not produce pollen. Instead, heart-shaped plants produce sperm. | |
Select the fish below. | [
"bald eagle",
"piranha"
] | 1 | Fish live underwater. They have fins, not limbs. A tiger shark is an example of a fish. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A bald eagle is a bird. It has feathers, two wings, and a beak.
A piranha is a fish. It lives underwater. It has fins, not limbs. | |
Which is this organism's common name? | [
"snowy owl",
"Bubo scandiacus"
] | 0 | This organism is a snowy owl. It is also called Bubo scandiacus. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Bubo scandiacus is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Bubo scandiacus is the organism's scientific name. So, you know that snowy owl is the common name. | |
What is the capital of Minnesota? | [
"Saint Paul",
"Columbus",
"Manchester",
"Minneapolis"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Saint Paul is the capital of Minnesota. | |||
Not supported with pagination yet | What information supports the conclusion that Nate acquired this trait? | [
"Nate learned biology by reading, observing, and experimenting.",
"Nate is most interested in human biology."
] | 0 | Read the description of a trait.
Nate knows a lot about biology. | 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... | |
Look at the picture. Which word best describes how this pretzel tastes? | [
"juicy",
"salty",
"fruity"
] | 1 | closed choice | grade2 | language science | writing-strategies | Descriptive details | Choose the sensory details that match the picture | When you write, you can use sensory details. These sense words help your reader understand what something looks, sounds, tastes, smells, or feels like.
Sensory Category | Description
Sight | These are words like bright, clean, and purple. A reader can imagine looking at these details.
Sound | These are words like hissi... | Look at the picture.
The word salty describes how this pretzel tastes.
Fruity and juicy can also describe how something tastes. But they do not describe this pretzel. | ||
Which solution has a higher concentration of purple particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 0 | 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 these states is farthest north? | [
"New Mexico",
"Georgia",
"Nevada",
"Louisiana"
] | 2 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Nevada is farthest north. | ||
Not supported with pagination yet | Which sentence uses a simile? | [
"The tired boy was as slow as a turtle.",
"The tired boy was a slow turtle."
] | 0 | closed choice | grade4 | language science | figurative-language | Literary devices | Identify similes and metaphors | Similes and metaphors are figures of speech that compare two things that are not actually alike.
A simile compares two things by saying that one is like the other. Similes often use the words like and as.
My sister runs like a cheetah.
The sister's running and a cheetah's running are compared using the word like.
A che... | This sentence uses a simile:
The tired boy was as slow as a turtle.
The words boy and turtle are compared using the word as.
This sentence uses a metaphor:
The tired boy was a slow turtle.
The words boy and turtle are compared without the word like or as. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
plunge - proper | [
"pitcher",
"pottery"
] | 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 pottery is between the guide words plunge - proper, it would be found on that page. |
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.