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Select the phase of the Moon shown in the model.
[ "first quarter", "new" ]
1
The model below shows the Moon at one position in its orbit around Earth. The white half of the Moon shows the part that is lit up by the Sun.
closed choice
grade5
natural science
earth-science
Astronomy
Identify phases of the Moon
Although the Moon appears to shine, it does not give off light. Instead, we can see the Moon because it is lit up by the Sun. The part of the Moon that is both lit up by the Sun and facing Earth is called the Moon's phase. The Moon orbits, or goes around, Earth. As it does, the Moon's phase changes. The model below sho...
What is the capital of Indiana?
[ "Norfolk", "Columbus", "Topeka", "Indianapolis" ]
3
closed choice
grade5
social science
geography
State capitals
Identify state capitals of the Midwest
Indianapolis is the capital of Indiana.
Based on the arrows, which of the following living things is a decomposer?
[ "kelp", "bat star" ]
1
Below is a food web from an ocean ecosystem. The ecosystem is in Monterey Bay, off the coast of California. A food web is a model that shows how the matter eaten by living things moves through an ecosystem. The arrows show how matter moves through the food web.
closed choice
grade3
natural science
biology
Ecosystems
Interpret food webs
A food web is a model. Models can make things in nature easier to understand. Models can be simpler than the things they represent. A food web is a model that shows where living things in an ecosystem get their food. If a food web showed every living thing in an ecosystem, the food web would be hard to understand. So, ...
Decomposers help break down dead living things into simpler matter, such as nutrients. These nutrients can then help plants and other living things grow. In a food web, there is an arrow pointing from another living thing to a decomposer. There are no arrows pointing from a decomposer to another living thing. The kelp ...
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Which figure of speech is used in this text? Would you please be careful with my new laptop? That thing cost a million dollars!
[ "euphemism", "hyperbole" ]
1
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 hyperbole, an obvious exaggeration that is not meant to be taken literally. A million dollars is an exaggeration, since it is unlikely that a laptop would actually cost a million dollars.
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Which figure of speech is used in this text? Love is an ideal thing, marriage a real thing. —Johann Wolfgang von Goethe
[ "assonance", "antithesis" ]
1
closed choice
grade11
language science
figurative-language
Literary devices
Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses. We are united. We are powerful. We are winners. Antithesis involves contrasting opposing id...
The text uses antithesis, the contrasting of opposing ideas within a parallel grammatical structure. Goethe contrasts love, an ideal thing, with marriage, a real thing.
Select the bird below.
[ "cane toad", "ostrich" ]
1
Birds have feathers, two wings, and a beak. A robin is an example of a bird.
closed choice
grade3
natural science
biology
Classification
Identify mammals, birds, fish, reptiles, and amphibians
Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common. Scientists sort animals into groups based on traits they have in common. This process is called classification.
An ostrich is a bird. It has feathers, two wings, and a beak. The ostrich is the largest bird alive today. Ostriches cannot fly, but they can run very fast. A cane toad is an amphibian. It has moist skin and begins its life in water. Toads do not have teeth! They swallow their food whole.
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Does this passage describe the weather or the climate? It is snowing in Sam's town today.
[ "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
grade3
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. It is snowing in Sam's town today. This passage tells you about the precipitation today in Sam's town. It describes the atmosphere at a certain place and time. So, this passage describes the weather.
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Complete the sentence so that it uses personification. The ancient oak tree () under the weight of its own branches.
[ "cracked", "slouched" ]
1
closed choice
grade10
language science
writing-strategies
Creative techniques
Use personification
Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point. The trees danced in the wind. The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t...
Complete the sentence with the word slouched. It describes the tree as if it were a person with slumping shoulders.
What is the direction of this pull?
[ "toward her hand", "away from her hand" ]
0
A student opens her desk drawer. She uses a force to pull out the drawer.
closed choice
grade4
natural science
physics
Force and motion
Identify directions of forces
A force is a push or a pull that one object applies to another. Every force has a direction. The direction of a push is away from the object that is pushing. The direction of a pull is toward the object that is pulling.
The student pulls open her desk drawer. The direction of the pull is toward her hand.
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Which change best matches the sentence? A glacier scrapes pieces of rock off a mountain and carries them downhill.
[ "landslide", "drought", "erosion" ]
2
closed choice
grade3
natural science
earth-science
Earth events
Classify changes to Earth's surface II
During this time, thermal energy was transferred from () to ().
[ "each refrigerator . . . the surroundings", "the surroundings . . . each refrigerator" ]
1
Two identical refrigerators in a restaurant kitchen lost power. The door of one fridge was slightly open, and the door of the other fridge was closed. This table shows how the temperature of each refrigerator changed over 10minutes.
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 refrigerator increased, which means that the thermal energy of each refrigerator increased. So, thermal energy was transferred from the surroundings to each refrigerator.
Which country is highlighted?
[ "Kiribati", "Nauru", "the Marshall Islands", "Solomon Islands" ]
2
closed choice
grade7
social science
geography
Oceania: geography
Identify and select countries of Oceania
This country is the Marshall Islands. Does the Marshall Islands have any territorial disputes? The Marshall Islands claims to own Wake Island, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them. The United States claimed Wake Island in 1899 and has...
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Which sentence is more formal?
[ "The student council requested that more lockers be installed ASAP to accommodate the incoming freshman class.", "The student council requested that more lockers be installed immediately to accommodate the incoming freshman class." ]
1
closed choice
grade5
language science
writing-strategies
Author's purpose and tone
Which sentence is more formal?
Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing: Type | Examples slang | cool, awesome idioms | knock your socks off conversational language | gonna, kinda, yeah abbreviated language | ASAP, FYI overly simple or imprecise lan...
The first sentence is less formal. You can tell because it uses abbreviated language (ASAP). The second sentence does not use abbreviated language, so it is more formal.
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How long is a tennis racket?
[ "26 yards", "26 inches", "26 feet", "26 miles" ]
1
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 tennis racket is 26 inches. 26 feet, 26 yards, and 26 miles are all too long.
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Which is smoother?
[ "plastic bucket", "burlap sack" ]
0
closed choice
grade2
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.
Smooth is a property. A smooth material is not rough or bumpy. Look at each picture, one at a time. Imagine touching the material shown in each picture. Of the choices, the plastic bucket is smoother. If you touch a plastic bucket like this one, it will not feel rough.
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Select the vertebrate.
[ "snowy owl", "peacock butterfly", "bess beetle", "Caribbean spiny lobster" ]
0
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 bess beetle is an insect. Like other insects, a bess beetle is an invertebrate. It does not have a backbone. It has an exoskeleton. A Caribbean spiny lobster is a crustacean. Like other crustaceans, a Caribbean spiny lobster is an invertebrate. It does not have a backbone. It has an exoskeleton. A snowy owl is a bird...
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Which logical fallacy is used in the text? If the government is allowed to start blocking websites, then soon they'll start banning books, and all we'll have to read is propaganda.
[ "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", "circular reasoning: an argument that supports a claim with the claim itself" ]
0
closed choice
grade12
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 blocking websites will eventually lead to having only propaganda to read. However, this isn't necessarily true. This argument offers only one extreme and unlikely outcome. This illustrates a type of logical fallacy known as the slippery slope fallacy.
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Which object has the most thermal energy?
[ "a 150-gram glass of orange juice at a temperature of 26°C", "a 150-gram glass of orange juice at a temperature of 7°C", "a 150-gram glass of orange juice at a temperature of 6°C" ]
0
The objects are identical except for their temperatures.
closed choice
grade4
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 ...
All three glasses of orange juice have the same mass but different temperatures. Since the 26°C glass of orange juice is the hottest, it has the most thermal energy.
Is the wind through a tree a solid, a liquid, or a gas?
[ "a solid", "a gas", "a liquid" ]
1
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...
Wind through a tree is air that is moving! Air is a gas. The air expands to fill the space around each tree branch.
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Is the following trait inherited or acquired? Anna has naturally red hair.
[ "acquired", "inherited" ]
1
Hint: Some people dye their hair. But this does not change their natural hair color.
closed choice
grade4
natural science
biology
Traits and heredity
Identify inherited and acquired traits
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's lif...
Humans do not choose their natural hair color. Instead, children get their natural hair color from their parents. So, Anna's hair color is an inherited trait.
Which country is highlighted?
[ "New Zealand", "Palau", "the Marshall Islands", "Papua New Guinea" ]
0
closed choice
grade6
social science
geography
Oceania: geography
Identify and select countries of Oceania
This country is New Zealand.
What is the name of the colony shown?
[ "North Carolina", "Rhode Island", "Delaware", "Georgia" ]
3
closed choice
grade8
social science
us-history
Colonial America
Identify the Thirteen Colonies
The colony is Georgia.
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Select the animal.
[ "Hydrangea bushes can grow colorful flowers.", "Sea otters eat animals that live in the ocean." ]
1
closed choice
grade2
natural science
biology
Classification
Identify plants and animals
Plants and animals are living things. Living things are called organisms. Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can. Animals also come in many shapes and sizes. Most animals can move around. A...
A sea otter is an animal. It eats animals that live in the ocean. Sea otters have very thick fur. Their fur keeps them warm in cold water. A hydrangea bush is a plant. It can grow colorful flowers. Hydrangea bushes can have blue, white, purple, or pink flowers.
Which ocean is highlighted?
[ "the Atlantic Ocean", "the Indian Ocean", "the Southern Ocean", "the Pacific Ocean" ]
3
closed choice
grade6
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 Pacific Ocean.
Which animal's mouth is also adapted to eat plant matter?
[ "cougar", "impala" ]
1
Goats are herbivores, or plant eaters. They eat grass and leaves. The 's mouth is adapted to grind up and eat plant matter. Figure: goat.
closed choice
grade4
natural science
biology
Adaptations
Animal adaptations: beaks, mouths, and necks
An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors. The shape of 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 goat. The goat has long jaws and flat teeth. Its mouth is adapted to eat plant matter. The long jaws can help the goat reach leaves and 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 similar a...
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Suppose Destiny decides to take a trip to Virginia. Which result would be a cost?
[ "Destiny will enjoy her trip to Virginia more than she would have enjoyed a trip to Connecticut.", "Destiny will spend more money. Plane tickets for Destiny to get to Virginia are more expensive than tickets to Connecticut." ]
1
Destiny is deciding whether to take a trip to Virginia or Connecticut. She wants to enjoy her trip. But she is also trying to save money.
closed choice
grade5
social science
economics
Basic economic principles
Costs and benefits
Before you decide to do something, it is often helpful to list costs and benefits. Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need. Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa...
This result is a cost. It involves giving up or spending something that Destiny wants or needs: Destiny will spend more money. Plane tickets for Destiny to get to Virginia are more expensive than tickets to Connecticut.
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Based on this information, what is Rover's phenotype for the fur length trait?
[ "ff", "long fur" ]
1
In a group of dogs, 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. Rover, a dog from this group, has long fur. Rover has two alleles for long fur.
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. Rover's observable version of the fur length trait is long fur. So, Rover's phenotype for the fur length trait is long fur.
Complete the text to describe the diagram. Solute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium.
[ "to the left than to the right", "to the right than to the left" ]
0
The diagram below shows a solution with one solute. Each solute particle is represented by a purple ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles. The diagram shows how the solution can change over time...
closed choice
grade6
natural science
chemistry
Solutions
Diffusion across membranes
In a solution, solute particles move and spread throughout the solvent. The diagram below shows how a solution can change over time. Solute particles move from the area where they are at a higher concentration to the area where they are at a lower concentration. This movement happens through the process of diffusion. A...
Look at the diagram again. It shows you how the solution changed during the process of diffusion. Before the solute particles reached equilibrium, there were 4 solute particles on the left side of the membrane and 6 solute particles on the right side of the membrane. When the solute particles reached equilibrium, there...
Think about the magnetic force between the magnets in each pair. Which of the following statements is true?
[ "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is greater in Pair 2.", "The magnitude of the magnetic force is greater in Pair 1." ]
1
The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material.
closed choice
grade7
natural science
physics
Velocity, acceleration, and forces
Compare magnitudes of magnetic forces
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,...
The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force. Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni...
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How long is a kitchen table?
[ "7 yards", "7 inches", "7 feet", "7 miles" ]
2
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 kitchen table is 7 feet. 7 inches is too short. 7 yards and 7 miles are too long.
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What is the source of the allusion in the sentence below? Red velvet cupcakes were Deb's Achilles's heel when she was trying to eat more healthily.
[ "Greek mythology", "the Bible" ]
0
closed choice
grade10
language science
figurative-language
Literary devices
Recall the source of an allusion
An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words. "I'd better get home before I turn into a pumpkin!" Lila remarked. Here, Lila alludes to the fairy tale "Cinderella," in which C...
The source of the allusion Achilles's heel is Greek mythology. In Greek mythology, Achilles's mother dips him in a river that protects his body wherever it touches. His heel does not get wet, so it is the one part of his body left unprotected. During the Trojan War, an arrow hits Achilles in the heel and kills him. The...
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Which word would you find on a dictionary page with the following guide words? dine - drown
[ "dozen", "design" ]
0
closed choice
grade2
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 dozen is between the guide words dine - drown, it would be found on that page.
Select the chemical formula for this molecule.
[ "BF3", "BFe3", "HB3F", "B2F3" ]
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 ...
B is the symbol for boron. F is the symbol for fluorine. This ball-and-stick model shows a molecule with one boron atom and three fluorine atoms. The chemical formula will contain the symbols B and F. There is one boron atom, so B will not have a subscript. There are three fluorine atoms, so F will have a subscript of ...
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Which greeting is correct for a letter?
[ "Dear Uncle Jim,", "dear Uncle Jim," ]
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 first greeting is correct: Its first word is capitalized, and it ends with a comma. Uncle Jim is capitalized because it is a proper noun.
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According to the passage, which statement is true?
[ "The Congress of the United States makes laws.", "Congress does not have legislative power." ]
0
The Legislative Branch is described in Article I of the United States Constitution. Read Section 1 of Article I. Then answer the question. All legislative powers herein granted shall be vested in a Congress of the United States, which shall consist of a Senate and House of Representatives. legislative: law-making veste...
closed choice
grade8
social science
civics
Government
The Legislative Branch
Is scoria a mineral or a rock?
[ "rock", "mineral" ]
0
Scoria has the following properties: no fixed crystal structure has many small holes not a pure substance found in nature solid not made by organisms
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 scoria match the properties of a rock. So, scoria is a rock.
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Is there a sentence fragment? In 2004, a team of archaeologists discovered a three-foot-tall skeleton, dubbed the "Hobbit," in Indonesia. Even after ten years, experts still debate whether the skeleton belonged to a modern human.
[ "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...
There is not a sentence fragment. These are complete sentences because they express complete thoughts. In 2004, a team of archaeologists discovered a three-foot-tall skeleton, dubbed the "Hobbit," in Indonesia. Even after ten years, experts still debate whether the skeleton belonged to a modern human.
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Which of the following contains a vague pronoun reference?
[ "Hares are often mistaken for rabbits, even though their legs, feet, and ears are usually bigger.", "Hares are often mistaken for rabbits, even though hares' legs, feet, and ears are usually bigger." ]
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 second answer choice contains a vague pronoun reference. The pronoun their could refer to hares' or rabbits'. The first answer choice shows a possible correction for the vague pronoun reference. Their has been replaced with hares'. Hares are often mistaken for rabbits, even though hares' legs, feet, and ears are us...
What is the capital of Illinois?
[ "Louisville", "Springfield", "Phoenix", "Chicago" ]
1
closed choice
grade3
social science
geography
State capitals
Identify state capitals of the Midwest
Springfield is the capital of Illinois.
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How long is a car?
[ "4 miles", "4 feet", "4 inches", "4 yards" ]
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 a car is 4 yards. 4 inches and 4 feet are too short. 4 miles is too long.
Which property do these three objects have in common?
[ "translucent", "opaque", "fragile" ]
1
Select the best answer.
closed choice
grade3
natural science
physics
Materials
Compare properties of objects
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. Different objects can have properties in common. You can use these properties to put objects into groups.
Look at each object. For each object, decide if it has that property. A translucent object lets light through. But you cannot see clearly through a translucent object. None of the objects are translucent. A fragile object will break into pieces if you drop it. None of the objects are fragile. An opaque object does not ...
What is the capital of Washington?
[ "Spokane", "Seattle", "Jefferson City", "Olympia" ]
3
closed choice
grade5
social science
geography
State capitals
Identify state capitals of the West
Olympia is the capital of Washington.
Which i in column 3?
[ "the library", "the restaurant", "the police department", "the grocery store" ]
3
closed choice
grade3
social science
geography
Geography
Use a letter-number grid
A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map. A row is a line of squares that goes from side to side. Rows are marked with letters. A column is a line of squares that goes up and down. Columns are marked with numbers.
The grocery store is in column 3.
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What is the source of the allusion in the sentence below? Myra thinks Mr. Harper is a Luddite because he doesn't own a cell phone.
[ "British history", "Roman history" ]
0
closed choice
grade9
language science
figurative-language
Literary devices
Recall the source of an allusion
An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words. "I'd better get home before I turn into a pumpkin!" Lila remarked. Here, Lila alludes to the fairy tale "Cinderella," in which C...
The source of the allusion Luddite is British history. In the early nineteenth century, factories were replacing the jobs of craftsmen. Some of these craftsmen banded together to destroy the new machinery; those who did so were called Luddites. The allusion Luddite means a person opposed to new technology.
Does this passage describe the weather or the climate?
[ "climate", "weather" ]
0
Figure: Blue Nile Falls. Blue Nile Falls is in Ethiopia. The winds in this part of Africa usually blow from the southeast. 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. Blue Nile Falls is in Ethiopia. The winds in this part of Africa usually blow from the southeast. The underlined part of the passage tells you about the usual wind patterns at Blue Nile Falls. This passage does not describe what the weather is like on a particular day. So, this passage descr...
Which property do these three objects have in common?
[ "translucent", "opaque", "fragile" ]
1
Select the best answer.
closed choice
grade3
natural science
physics
Materials
Compare properties of objects
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. Different objects can have properties in common. You can use these properties to put objects into groups.
Look at each object. For each object, decide if it has that property. A translucent object lets light through. But you cannot see clearly through a translucent object. None of the objects are translucent. A fragile object will break into pieces if you drop it. None of the objects are fragile. An opaque object does not ...
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Based on this information, what is Pudge's genotype for the body color gene?
[ "Bb", "a gray body" ]
0
In a group of guppies, some individuals have a gray body and others have a golden 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 golden body. Pudge, a guppy from this group, has a gray body. Pudge has one allele for a gray body and one ...
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. Pudge has one allele for a gray body (B) and one allele for a golden body (b). So, Pudge's genotype for the body color gene is Bb.
Which statement describes the Eastern Siberian Taiga ecosystem?
[ "It has mostly small plants.", "It has soil that is rich in nutrients.", "It has long, cold winters and short, cool summers." ]
2
Figure: East Siberian Taiga. The Eastern Siberian Taiga is a large forest that covers more than a quarter of Russia. It is home to brown bears, wolves, deer, and other organisms.
closed choice
grade6
natural science
biology
Ecosystems
Describe ecosystems
An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment. There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri...
A taiga is a type of ecosystem. Taigas have the following features: long, cold winters and short, cool summers, many evergreen trees, and soil that is poor in nutrients. So, the following statement describes the Eastern Siberian Taiga ecosystem: long, cold winters and short, cool summers, many evergreen trees, and soil...
Which property do these two objects have in common?
[ "sticky", "salty" ]
1
Select the better answer.
closed choice
grade2
natural science
physics
Materials
Compare properties of objects
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Different objects can have the same properties. You can use these properties to put objects into groups.
Look at each object. For each object, decide if it has that property. Potato chips have a salty taste. Both objects are salty. A sticky object can stick to other things. Neither of the objects are sticky. The property that both objects have in common is salty.
Which property do these three objects have in common?
[ "soft", "flexible", "slippery" ]
2
Select the best answer.
closed choice
grade4
natural science
physics
Materials
Compare properties of objects
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects...
Look at each object. For each object, decide if it has that property. A slippery object is hard to hold onto or stand on. All three objects are slippery. A flexible object can be folded or bent without breaking easily. The wet ice cube is not flexible. A soft object changes shape when pressed or squeezed. The butter is...
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Compare the motion of two mountain bikers. Which mountain biker was moving at a lower speed?
[ "a mountain biker who moved 190miles in 10hours", "a mountain biker who moved 100miles in 10hours" ]
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 mountain biker moved and the time it took to move that distance. One mountain biker moved 100 miles in 10 hours. The other mountain biker moved 190 miles in 10 hours. Notice that each mountain biker spent the same amount of time moving. The mountain biker who moved 100 miles moved a shorter di...
Think about the magnetic force between the magnets in each pair. Which of the following statements is true?
[ "The magnitude of the magnetic force is greater in Pair 2.", "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is greater in Pair 1." ]
0
The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material.
closed choice
grade8
natural science
physics
Velocity, acceleration, and forces
Compare magnitudes of magnetic forces
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,...
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater. There is a smaller distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1.
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Would you find the word other on a dictionary page with the following guide words? occur - oil
[ "yes", "no" ]
1
yes or no
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 other is not between the guide words occur - oil, it would not be found on that page.
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Select the vertebrate.
[ "white-spotted octopus", "locust", "whiptail lizard", "peacock butterfly" ]
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 whiptail lizard is a reptile. Like other reptiles, a whiptail lizard is a vertebrate. It has a backbone. Like other octopuses, a white-spotted octopus is an invertebrate. It does not have a backbone. It has a soft body. A peacock butterfly is an insect. Like other insects, a peacock butterfly is an invertebrate. It d...
Which property matches this object?
[ "translucent", "colorful" ]
1
Select the better answer.
closed choice
grade3
natural science
physics
Materials
Identify properties of an object
An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Look at the object. Think about each property. A translucent object lets light through. But you cannot see clearly through a translucent object. The crayons are not translucent. A colorful object has one or more bright colors. The crayons are colorful.
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Select the elementary substance.
[ "methane (CH4)", "water (H2O)", "zinc (Zn)" ]
2
closed choice
grade5
natural science
chemistry
Atoms and molecules
Identify elementary substances and compounds using chemical formulas
Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds. Every chemical element is represented by its own symbol. For s...
Look at the chemical formula for each substance, and count the number of symbols in the formula. Then, decide if the substance is an elementary substance. The chemical formula for water contains two symbols: H for hydrogen and O for oxygen. So, water is made of two chemical elements bonded together. Substances that are...
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What information supports the conclusion that Jada inherited this trait?
[ "Jada has green eyes like her biological mother.", "Jada's neighbor has green eyes.", "Jada and her biological father wear sunglasses when they go outside." ]
0
Read the description of a trait. Jada has green eyes.
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....
What is the capital of Ohio?
[ "Charleston", "Columbus", "Lincoln", "Fargo" ]
1
closed choice
grade4
social science
geography
State capitals
Identify state capitals of the Midwest
Columbus is the capital of Ohio.
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Which is a compound sentence?
[ "Bella was stung by a bee, so her finger is slightly swollen.", "Mr. Estrada's afternoon lecture was about art and culture in Germany before World War II." ]
0
closed choice
grade6
language science
grammar
Sentences, fragments, and run-ons
Is the sentence simple, compound, or complex?
A clause is a group of words that contains both a subject and a predicate. An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence. the oranges on our tree are ripe The clause can stand alone. It is independent. aft...
The second sentence is the compound sentence. It is made up of two independent clauses joined by the coordinating conjunction so. Bella was stung by a bee, so her finger is slightly swollen.
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What is the volume of a soda bottle cap?
[ "12 liters", "12 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 a soda bottle cap is 12 milliliters. 12 liters is too much.
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Which word would you find on a dictionary page with the following guide words? cove - cylinder
[ "credit", "cattle" ]
0
closed choice
grade5
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let...
Put the words in alphabetical order. Since credit is between the guide words cove - cylinder, it would be found on that page.
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Which object has less thermal energy?
[ "a bowl of oatmeal at a temperature of 35°C", "a bowl of oatmeal at a temperature of 40°C" ]
0
The objects are identical except for their temperatures.
closed choice
grade3
natural science
physics
Heat and thermal energy
How is temperature related to thermal energy?
All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy. Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both ...
The two bowls of oatmeal have the same mass but different temperatures. Since the 35°C bowl of oatmeal is colder than the 40°C bowl of oatmeal, it has less thermal energy.
Which of these states is farthest east?
[ "Louisiana", "North Dakota", "North Carolina", "Arizona" ]
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 Carolina is farthest east.
Which continent is highlighted?
[ "Antarctica", "South America", "Asia", "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 South America.
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Which sentence is more formal?
[ "Kline Electronics has a reputation for responding real quick to customer concerns and questions.", "Kline Electronics has a reputation for responding quickly to all customer concerns and questions." ]
1
closed choice
grade6
language science
writing-strategies
Author's purpose and tone
Which sentence is more formal?
Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing: Type | Examples slang | cool, awesome idioms | knock your socks off conversational language | gonna, kinda, yeah abbreviated language | ASAP, FYI overly simple or imprecise lan...
The second sentence is less formal. You can tell because it uses conversational language (real quick). The first sentence uses formal language in place of the conversational language, so it is more formal overall.
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Is the following trait inherited or acquired? Jen has a scar on her left knee.
[ "acquired", "inherited" ]
0
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.
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Using only these supplies, which question can Edmond investigate with an experiment?
[ "Do cloth towels dry faster if they are hung in the laundry room or in the backyard?", "Does a small cloth towel or a large cloth towel dry faster when hung in the backyard?", "When hung in the laundry room, do black cloth towels or white cloth towels dry more quickly?" ]
0
After Edmond cleans up a spill, he hangs a wet cloth towel in the laundry room. Two hours later, he notices that the towel has partially dried. He wonders what factors affect how cloth dries. So, he decides to design an experiment. He has the following supplies available: two identical white cloth towels water a clothe...
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...
Which month is the wettest on average in Christchurch?
[ "April", "December", "May" ]
2
Use the graph to answer the question below.
closed choice
grade3
natural science
earth-science
Weather and climate
Use climate data to make predictions
Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data. A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average.
To describe the average precipitation trends in Christchurch, look at the graph. Choice "Apr" is incorrect. Choice "May" is incorrect. Choice "Dec" is incorrect. May has an average monthly precipitation of about 70 millimeters. This is higher than in any other month. So, May is the wettest month on average.
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Which logical fallacy is used in the text? Hazel has no school spirit—she never comes to any of our football games.
[ "red herring: the use of a completely unrelated topic or idea", "false dichotomy: an argument that presents only two choices when more options exist" ]
1
closed choice
grade6
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 Hazel doesn't have school spirit, because she doesn't go to football games. However, there may be a number of reasons why Hazel doesn't go to football games. This illustrates a type of logical fallacy known as a false dichotomy.
Which of the following was a dependent variable in this experiment?
[ "the distance the footballs traveled", "the air pressure in the footballs" ]
0
The passage below describes an experiment. Read the passage and think about the variables that are described. Kamal noticed that some of the footballs his team used during practice were not fully inflated. He wondered whether fully inflated footballs would travel farther than footballs with a lower air pressure. To fi...
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...
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What information supports the conclusion that Colleen acquired this trait?
[ "Colleen is in the Air Force. She flies a plane almost every day.", "Colleen can fly a plane on cloudy days and at night.", "A pilot taught Colleen how to fly a plane." ]
2
Read the description of a trait. Colleen knows how to fly a plane.
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....
What is the capital of New Hampshire?
[ "Montgomery", "Concord", "Manchester", "Jackson" ]
1
closed choice
grade4
social science
geography
State capitals
Identify state capitals of the Northeast
Concord is the capital of New Hampshire.
What is the capital of Pennsylvania?
[ "Trenton", "Philadelphia", "Harrisburg", "Albany" ]
2
closed choice
grade4
social science
geography
State capitals
Identify state capitals of the Northeast
Harrisburg is the capital of Pennsylvania.
Which solution has a higher concentration of green particles?
[ "Solution B", "neither; their concentrations are the same", "Solution A" ]
0
The diagram below is a model of two solutions. Each green ball represents one particle of solute.
closed choice
grade8
natural science
chemistry
Solutions
Compare concentrations of solutions
A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution...
In Solution A and Solution B, the green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container. Use the concentration formula to find the number of green particles per millilit...
Identify the question that Farid'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. Farid 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. Farid recorded the number of drops he could add before the wa...
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...
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Which figure of speech is used in this text? Jeremiah and Kari have trouble working on projects together. Although Kari is very sociable and friendly, she's not exactly a team player.
[ "paradox", "euphemism" ]
1
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. Not exactly a team player is an indirect way of saying that someone doesn't work well with others.
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Would you find the word pink on a dictionary page with the following guide words? parrot - property
[ "yes", "no" ]
0
yes or no
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 pink is between the guide words parrot - property, it would be found on that page.
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Does the sentence use a simile or a metaphor? Mrs. Leonard is kind, and her heart is gold.
[ "metaphor", "simile" ]
0
closed choice
grade5
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...
Mrs. Leonard is kind, and her heart is gold. The words heart and gold are compared without the word like or as. So, the sentence uses a metaphor.
Think about the magnetic force between the magnets in each pair. Which of the following statements is true?
[ "The magnitude of the magnetic force is greater in Pair 2.", "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is greater in Pair 1." ]
0
The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material.
closed choice
grade7
natural science
physics
Velocity, acceleration, and forces
Compare magnitudes of magnetic forces
Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,...
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater. There is a smaller distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1.
Which solution has a higher concentration of green particles?
[ "Solution A", "Solution B", "neither; their concentrations are the same" ]
1
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...
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Which figure of speech is used in this text? The soul is born old but grows young. That is the comedy of life. And the body is born young and grows old. That is life's tragedy. —Oscar Wilde, A Woman of No Importance
[ "chiasmus", "apostrophe" ]
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 third sentence reverses the order of the words old and young relative to the first sentence.
Does this passage describe the weather or the climate?
[ "weather", "climate" ]
0
Figure: Tambor Beach, Costa Rica. Tambor Beach is located in Costa Rica, a country in Central America. A temperature of 84°F was measured at Tambor Beach on Friday. 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
grade3
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. Tambor Beach is located in Costa Rica, a country in Central America. A temperature of 84°F was measured at Tambor Beach on Friday. The underlined part of the passage tells you about the temperature at Tambor Beach on Friday. This passage describes the atmosphere at a certain place and time. ...
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Based on this information, what is this plant's phenotype for the fruit texture trait?
[ "bumpy fruit", "smooth fruit" ]
0
In a group of cucumber plants, some individuals have bumpy fruit and others have smooth fruit. In this group, the gene for the fruit texture trait has two alleles. The allele for smooth fruit (f) is recessive to the allele for bumpy fruit (F). A certain cucumber plant from this group has the homozygous genotype FF for ...
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 cucumber plant's genotype for the fruit texture gene is FF. The cucumber plant's genotype of FF has only F allelles. The F allele is for bumpy fruit. So, the cucumber plant's phenotype for the fruit texture trait must be bumpy fruit. To check this answer, consider whether the cucumber plant's alleles are dominant o...
Will these magnets attract or repel each other?
[ "repel", "attract" ]
0
Two magnets are placed as shown.
closed choice
grade5
natural science
physics
Magnets
Identify magnets that attract or repel
Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces. Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (...
To predict if these magnets will attract or repel, look at which poles are closest to each other. The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other.
Is eclogite a mineral?
[ "no", "yes" ]
0
Eclogite has the following properties: solid naturally occurring not made by organisms not a pure substance no fixed crystal structure
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...
Eclogite does not have all the properties of a mineral. So, eclogite is not a mineral.
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Which tense does the sentence use? Scientists will measure the rainfall in Livingston.
[ "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, measure. The verb tells you about something that is going to happen.
Which of the following could Lamar's test show?
[ "whether the filter was clogged", "the amount of bacteria in the water before it was filtered", "whether an inexpensive filter would become clogged more often" ]
0
People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques...
closed choice
grade8
natural science
science-and-engineering-practices
Engineering practices
Evaluate tests of engineering-design solutions
People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured. Imagine an engineer needs to design a...
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What does the verbal irony in this text suggest? According to Mr. Joyce's kids, his snoring is as quiet as a jackhammer.
[ "The snoring is loud.", "The snoring is subtle." ]
0
closed choice
grade8
language science
figurative-language
Literary devices
Interpret figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking dow...
The text uses verbal irony, which involves saying one thing but implying something very different. As quiet as a jackhammer suggests that the snoring is loud. A jackhammer is not quiet, and neither is Mr. Joyce's snoring.
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Which tense does the sentence use? Mr. Atkinson will deliver the envelope to Trent.
[ "future tense", "past tense", "present tense" ]
0
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, deliver. The verb tells you about something that is going to happen.
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What is the volume of a can of soda pop?
[ "320 liters", "320 milliliters" ]
1
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 can of soda pop is 320 milliliters. 320 liters is too much.
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Which figure of speech is used in this text? Norma's phone slipped out of her pocket, landing in the toilet with a plop.
[ "verbal irony", "onomatopoeia" ]
1
closed choice
grade9
language science
figurative-language
Literary devices
Classify figures of speech: review
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Alliteration is the repetition of sounds at the beginning of nearby words. What a lucky little lady you are! An allusion is a brief reference to something or someone well known, often from his...
The text uses onomatopoeia, a word that expresses a sound. Plop represents the sound of the phone landing in the toilet.
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Which tense does the sentence use? The passengers will give Warren their tickets.
[ "present tense", "future tense", "past tense" ]
1
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 future tense. You can tell because it uses will before the main verb, give. The verb tells you about something that is going to happen.
Which continent is highlighted?
[ "Europe", "Asia", "Australia", "South America" ]
0
closed choice
grade8
social science
geography
Physical Geography
Oceans and continents
A continent is one of the major land masses on the earth. Most people say there are seven continents.
This continent is Europe.
What is the expected ratio of offspring with white spots to offspring with solid coloring? Choose the most likely ratio.
[ "4:0", "3:1", "1:3", "2:2", "0:4" ]
4
In a group of cows, some individuals have solid coloring and others have white spots. In this group, the gene for the coat pattern trait has two alleles. The allele for white spots (a) is recessive to the allele for solid coloring (A). This Punnett square shows a cross between two cows.
closed choice
grade8
natural science
biology
Genes to traits
Use Punnett squares to calculate ratios of offspring types
Offspring phenotypes: dominant or recessive? How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a...
To determine how many boxes in the Punnett square represent offspring with white spots or solid coloring, consider whether each phenotype is the dominant or recessive allele's version of the coat pattern trait. The question tells you that the a allele, which is for white spots, is recessive to the A allele, which is fo...
Which country is highlighted?
[ "Saint Vincent and the Grenadines", "Grenada", "the Dominican Republic", "Trinidad and Tobago" ]
1
closed choice
grade7
social science
geography
The Americas: geography
Identify and select countries of the Caribbean
This country is Grenada.
Select the reptile below.
[ "dwarf crocodile", "gorilla" ]
0
Reptiles have scaly, waterproof skin. Most reptiles live on land. A Galapagos giant tortoise is an example of a reptile.
closed choice
grade2
natural science
biology
Classification
Identify mammals, birds, fish, reptiles, and amphibians
Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common. Scientists sort animals into groups based on traits they have in common. This process is called classification.
A dwarf crocodile is a reptile. It has scaly, waterproof skin. A gorilla is a mammal. It has fur and feeds its young milk.
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What kind of sentence is this? In the game today, Molly hit a home run with bases loaded!
[ "declarative", "exclamatory", "interrogative" ]
1
closed choice
grade10
language science
punctuation
Sentences, fragments, and run-ons
Is the sentence declarative, interrogative, imperative, or exclamatory?
There are four kinds of sentences. A declarative sentence is a statement and always ends with a period. The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure. An imperative sentence makes a request or a demand and usually ends with a period. If a demand shows strong feeling, it can ...
The sentence is a statement that shows strong feeling and ends with an exclamation point. It is an exclamatory sentence.
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What do these two changes have in common? rust forming on a bike frame a penny tarnishing
[ "Both are chemical changes.", "Both are only physical changes.", "Both are caused by heating.", "Both are caused by cooling." ]
0
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. Rust forming on a bike frame is a chemical change. The metal on the bike changes into rust. Metal and rust are different types of matter. Metal turning less shiny over time is called tarnishing. A penny tarnishing is a chemical change. When air touches the penny, the surface of the penn...
What is the capital of Massachusetts?
[ "Albany", "Annapolis", "Cambridge", "Boston" ]
3
closed choice
grade4
social science
geography
State capitals
Identify state capitals of the Northeast
Boston is the capital of Massachusetts.
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What do these two changes have in common? mixing sand and gravel crushing a mineral into powder
[ "Both are chemical changes.", "Both are only physical changes.", "Both are caused by cooling.", "Both are caused by heating." ]
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. 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. Crushing a mineral into powder is a physical change. The mineral breaks into tiny pieces. But it is still made of the same type of...