question
stringlengths
15
1.64k
answer
stringlengths
1
1.18k
full_solution
stringlengths
0
2.72k
domain
stringclasses
2 values
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.
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...
science
What can Tyrone and Mason trade to each get what they want?
Tyrone can trade his tomatoes for Mason's broccoli.
Tyrone wanted broccoli in his lunch and Mason was hoping for tomatoes. Look at the labeled part of the images. Tyrone has tomatoes. Mason has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want.
science
Which country is highlighted?
Cuba
This country is Cuba. Does Cuba have any territorial disputes? Cuba claims to own Guantanamo Bay Naval Base, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them. The United States controls the area and uses it as a military base and prison. A treaty...
science
Which country is highlighted?
Trinidad and Tobago
This country is Trinidad and Tobago.
science
During this time, thermal energy was transferred from () to ().
the surroundings . . . each bottle
The temperature of each bottle increased, which means that the thermal energy of each bottle increased. So, thermal energy was transferred from the surroundings to each bottle.
science
Which solution has a higher concentration of yellow particles?
Solution B
In Solution A and Solution B, the yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container. Use the concentration formula to find the number of yellow particles per mill...
science
Based on this information, what is this pea plant's genotype for the pea color gene?
Ee
An organism's genotype for a gene is its combination of alleles for that gene. The pea plant has one allele for yellow peas (E) and one allele for green peas (e). So, the plant's genotype for the pea color gene is Ee.
science
Think about the magnetic force between the magnets in each pair. Which of the following statements is true?
The magnitude of the magnetic force is smaller in Pair 1.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them. Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 1 than in Pair 2. So, the magnit...
science
Which of these continents does the prime meridian intersect?
Europe
The prime meridian is the line at 0° longitude. It intersects Europe. It does not intersect Asia or South America.
science
Which better describes the tide pool ecosystems in Tongue Point Marine Life Sanctuary?
It has daily flooding and draining of seawater. It also has water that is rich in nutrients.
A tide pool is a type of ecosystem. Tide pool ecosystems have the following features: daily flooding and draining of seawater, water that is rich in nutrients, and many different types of organisms. So, the tide pool ecosystems in Tongue Point Marine Life Sanctuary have daily flooding and draining of seawater. They als...
science
Which property matches this object?
flexible
Look at the object. Think about each property. A flexible object can be folded or bent without breaking easily. The slippers are flexible. A sticky object can attach or stick to other things. The slippers are not sticky.
science
Will these magnets attract or repel each other?
attract
To predict if these magnets will attract or repel, look at which poles are closest to each other. The north pole of one magnet is closest to the south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other.
science
Which closing is correct for a letter?
Thank you, Estelle
The first closing is correct: Its first word is capitalized, and it ends with a comma.
science
Which is a compound sentence?
An ostrich cannot fly, so it must run away from danger.
The first sentence is the compound sentence. It is made up of two independent clauses joined by the coordinating conjunction so. An ostrich cannot fly, so it must run away from danger.
science
Does this passage describe the weather or the climate?
weather
Read the passage carefully. Las Vegas is in the desert. The sky was clear before the fireworks show on December 31, 1999. The underlined part of the passage tells you about the cloud cover in Las Vegas on December 31, 1999. This passage describes the atmosphere at a certain place and time. So, this passage describes th...
science
What is the capital of West Virginia?
Charleston
Charleston is the capital of West Virginia.
science
What information supports the conclusion that Jon inherited this trait?
Jon's parents have blond hair. They passed down this trait to Jon.
science
Which property do these three objects have in common?
sweet
Look at each object. For each object, decide if it has that property. Potato chips have a salty taste. None of the objects are salty. Sugar has a sweet taste. All three objects are sweet. A scratchy object is rough and itchy against your skin. None of the objects are scratchy. The property that all three objects have i...
science
Which of these states is farthest west?
Montana
To find the answer, look at the compass rose. Look at which way the west arrow is pointing. Montana is farthest west.
science
Which of the following organisms is the primary consumer in this food web?
kelp bass
Primary consumers eat producers. So, in a food web, primary consumers have arrows pointing to them from producers. The kelp bass has an arrow pointing to it from the kelp. The kelp is a producer, so the kelp bass is a primary consumer. The orca has an arrow pointing to it from the sea otter. The sea otter is not a prod...
science
Which closing is correct for a letter?
Thank you, Oliver
The first closing is correct: Its first word is capitalized, and it ends with a comma.
science
Will these magnets attract or repel each other?
attract
To predict if these magnets will attract or repel, look at which poles are closest to each other. The south pole of one magnet is closest to the north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other.
science
Which pencil has a higher temperature?
the pencil with more thermal energy
The two pencils are made of the same material and have the same mass. So, the pencil with more thermal energy has a higher temperature.
science
Suppose Hector decides to go on the balloon race. Which result would be a cost?
Hector will give up the chance to go on the roller coaster. He would have had more fun on that ride.
This result is a cost. It involves giving up or spending something that Hector wants or needs: Hector will give up the chance to go on the roller coaster. He would have had more fun on that ride.
science
Which text uses the word peruse in its traditional sense?
Greg perused a catalog from his wife's favorite clothing store, searching for the perfect birthday gift.
The first text uses peruse in its traditional sense: to examine in detail. Greg perused a catalog from his wife's favorite clothing store, searching for the perfect birthday gift. The second text uses peruse in its nontraditional sense: to look through in a casual manner. Greg perused a clothing catalog as he waited fo...
science
What do these two changes have in common? an iceberg melting slowly dry ice sublimating and becoming a gas
Both are caused by heating.
Step 1: Think about each change. An iceberg melting is a change of state. So, it is a physical change. An iceberg is made of frozen water. As it melts, the water changes from a solid to a liquid. But a different type of matter is not formed. Dry ice is solid carbon dioxide. When dry ice gets warm, it changes state and ...
science
Which of the following contains a vague pronoun reference?
As David was walking with his friend Bob, he tripped on the uneven sidewalk.
The first answer choice contains a vague pronoun reference. The pronoun he could refer to David or Bob. The second answer choice shows a possible correction for the vague pronoun reference. He has been replaced with Bob. As David was walking with his friend Bob, Bob tripped on the uneven sidewalk.
science
What is the mass of an eraser?
33 grams
The better estimate for the mass of an eraser is 33 grams. 33 kilograms is too heavy.
science
What can Bryan and Manuel trade to each get what they want?
Bryan can trade his tomatoes for Manuel's broccoli.
Bryan wanted broccoli in his lunch and Manuel was hoping for tomatoes. Look at the labeled part of the images. Bryan has tomatoes. Manuel has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want.
science
Select the liquid.
water in a bathtub
science
What information supports the conclusion that Polly acquired this trait?
Polly learned how to build a fire at summer camp.
science
Which air temperature was measured within the outlined area shown?
32°C
Look at the colors shown within the outlined area. Then, use the legend to determine which air temperatures those colors represent. The legend tells you that this air mass contained air with temperatures between 25°C and 35°C. 32°C is within this range. 4°C and 12°C are outside of this range.
science
What is the capital of Alaska?
Juneau
Juneau is the capital of Alaska.
science
What is the Japanese tree frog's scientific name?
Hyla japonica
This organism's scientific name refers to Japan. The word japonica refers to Japan. So, the Japanese tree frog's scientific name is Hyla japonica.
science
Using only these supplies, which question can Monica investigate with an experiment?
Does a cell phone charge more quickly when it is turned on or when it is turned off?
science
What is the capital of South Dakota?
Pierre
Pierre is the capital of South Dakota.
science
What can Aisha and Hayley trade to each get what they want?
Aisha can trade her tomatoes for Hayley's broccoli.
Aisha wanted broccoli in her lunch and Hayley was hoping for tomatoes. Look at the labeled part of the images. Aisha has tomatoes. Hayley has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want.
science
During this time, thermal energy was transferred from () to ().
each aquarium . . . the surroundings
The temperature of each aquarium decreased, which means that the thermal energy of each aquarium decreased. So, thermal energy was transferred from each aquarium to the surroundings.
science
Select the elementary substance.
palladium (Pd)
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 silicon dioxide contains two symbols: Si for silicon and O for oxygen. So, silicon dioxide is made of two chemical elements bonded together....
science
Based on this information, what is this Cepaea snail's phenotype for the shell banding trait?
a banded shell
An organism's phenotype for a trait is its observable version of that trait. The Cepaea snail's observable version of the shell banding trait is a banded shell. So, the snail's phenotype for the shell banding trait is a banded shell.
science
Complete the sentence. A penny tarnishing is a ().
chemical change
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 penny changes into a different type of matter. This matter makes the penny dull.
science
Will these magnets attract or repel each other?
repel
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.
science
Based on this information, what is this plant's phenotype for the flower form trait?
double flowers
The rose plant's genotype for the flower form gene is FF. The rose plant's genotype of FF has only F allelles. The F allele is for double flowers. So, the rose plant's phenotype for the flower form trait must be double flowers. To check this answer, consider whether the rose plant's alleles are dominant or recessive. T...
science
Select the organism in the same genus as the peregrine falcon.
Falco tinnunculus
A peregrine falcon's scientific name is Falco peregrinus. The first word of its scientific name is Falco. Falco tinnunculus is in the genus Falco. The first word of its scientific name is Falco. So, Falco tinnunculus and Falco peregrinus are in the same genus. Phoebastria nigripes is in the genus Phoebastria. The first...
science
What is the capital of Missouri?
Jefferson City
Jefferson City is the capital of Missouri.
science
Which tense does the sentence use? Judith will sweep the sidewalk in front of her store.
future tense
The sentence is in future tense. You can tell because it uses will before the main verb, sweep. The verb tells you about something that is going to happen.
science
In this food chain, the Arctic bell-heather is a producer. Why?
It makes its own food.
In this food chain, the Arctic bell-heather is a producer because it makes its own food. The Arctic bell-heather uses carbon dioxide, water, and sunlight to make its own food.
science
How long does it take to knit a scarf?
8 hours
The better estimate for how long it takes to knit a scarf is 8 hours. 8 minutes is too fast.
science
What information supports the conclusion that Tyler acquired this trait?
Tyler's scar was caused by an accident. He cut his leg when he fell off his skateboard.
science
Complete the statement. Aluminum is ().
an elementary substance
Use the model to determine whether aluminum is an elementary substance or a compound. Step 1: Interpret the model. In the space-filling model shown above, all of the balls are the same color: . The legend shows that gray represents the chemical element with the atomic symbol Al. So, the model shows you that aluminum is...
science
Which logical fallacy is used in the text? The thing that makes Hassan stand out as a remarkable cellist is that he's a marvelous musician who plays the cello splendidly.
circular reasoning: an argument that supports a claim with the claim itself
The text argues that Hassan is a remarkable cellist because he plays the cello well. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning.
science
What is the name of the colony shown?
Pennsylvania
The colony is Pennsylvania.
science
Identify the question that Abdul's experiment can best answer.
Do steel nails take fewer days to rust in water compared to vinegar?
science
What kind of sentence is this? Please take the garbage out.
imperative
The sentence makes a request, so it is an imperative sentence. Here, it ends with a period.
science
What do these two changes have in common? mixing sand and gravel using a large magnet to remove pieces of iron from a junkyard
Both are only physical changes.
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. Using a large magnet to remove pieces of iron from a junkyard is a physical change. Both the iron and the magnet are still made of...
science
What is the mass of an apple?
85 grams
The better estimate for the mass of an apple is 85 grams. 85 kilograms is too heavy.
science
What is the source of the allusion in the sentence below? Rudy persisted despite his friends' attempts to tell him that this was a Gordian knot.
ancient legend
The source of the allusion Gordian knot is ancient legend. According to legend, Alexander the Great used his sword to slash an intricate knot by which a chariot was tied to a pole in the city of Gordium. The allusion Gordian knot means a highly complex problem.
science
What does the verbal irony in this text suggest? While waiting for her search results, Ling exclaimed, "My Internet connection is as speedy as a snail!"
The Internet connection was very slow.
The text uses verbal irony, which involves saying one thing but implying something very different. As speedy as a snail suggests that the Internet connection was very slow. A snail is not speedy, and neither was Ling's Internet connection.
science
Based on this information, what is Clue's phenotype for the fur texture trait?
rough fur
Clue's genotype for the fur texture gene is FF. Clue's genotype of FF has only F allelles. The F allele is for rough fur. So, Clue's phenotype for the fur texture trait must be rough fur. To check this answer, consider whether Clue's alleles are dominant or recessive. The allele for rough fur (F) is dominant over the a...
science
Which is this organism's common name?
frilled lizard
Chlamydosaurus kingii is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name. Chlamydosaurus kingii is the organism's scientific name. So, you know that frilled lizard is the common name.
science
Based on this information, what is Mabel's phenotype for the leg color trait?
yellow legs
Mabel's genotype for the leg color gene is ll. Mabel's genotype of ll has only l alleles. The l allele is for yellow legs. So, Mabel's phenotype for the leg color trait must be yellow legs. To check this answer, consider whether Mabel's alleles are dominant or recessive. The allele for white legs (L) is dominant over t...
science
Which property do these three objects have in common?
stretchy
Look at each object. For each object, decide if it has that property. Yellow is a color. This color is yellow. None of the objects are yellow. A stretchy object gets longer when you pull on it. All three objects are stretchy. A fragile object will break into pieces if you drop it. The wool hat and the balloon are not f...
science
Look at the models of molecules below. Select the elementary substance.
hydrogen
science
Select the fish.
tiger shark
An Amazon tree boa is a reptile. It has scaly, waterproof skin. Tree boas eat small mammals, birds, lizards, and frogs. Tree boas only need to eat once every few months! A cassowary is a bird. It has feathers, two wings, and a beak. Cassowaries have wings, but they cannot fly! They can run very fast. A horned frog is a...
science
Based on the arrows, which of the following living things is a decomposer?
sea cucumber
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 phyto...
science
Select the organism in the same species as the mountain zebra.
Equus zebra
A mountain zebra's scientific name is Equus zebra. Camelus dromedarius does not have the same scientific name as a mountain zebra. So, Equus zebra and Camelus dromedarius are not in the same species. Equus zebra has the same scientific name as a mountain zebra. So, these organisms are in the same species. Cervus canade...
science
Identify the question that Bob's experiment can best answer.
Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?
science
Select the organism in the same species as the American kestrel.
Falco sparverius
An American kestrel's scientific name is Falco sparverius. Falco sparverius has the same scientific name as an American kestrel. So, these organisms are in the same species. Ardea goliath does not have the same scientific name as an American kestrel. So, Falco sparverius and Ardea goliath are not in the same species. P...
science
Based on this information, what is Frankie's phenotype for the fur length trait?
long fur
Frankie's genotype for the fur length gene is ff. Frankie's genotype of ff has only f alleles. The f allele is for long fur. So, Frankie's phenotype for the fur length trait must be long fur. To check this answer, consider whether Frankie's alleles are dominant or recessive. The allele for short fur (F) is dominant ove...
science
What is the capital of Louisiana?
Baton Rouge
Baton Rouge is the capital of Louisiana.
science
Which term matches the picture?
monocot
A monocot is a flowering plant that has seeds with one cotyledon. Its flower parts occur in multiples of three, and its leaves have parallel veins.
science
Which type of sentence is this? An avid reader, Mike attends weekly book club meetings, and he finishes several novels every month.
compound
The sentence is compound. It is made up of two independent clauses joined by the coordinating conjunction and. An avid reader, Mike attends weekly book club meetings, and he finishes several novels every month.
science
Select the one substance that is not a mineral.
A nutshell is not a pure substance. It is formed in nature.
Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals. Halite is a mineral. Gypsum is a mineral. A nutshell is not a pure substance. But all minerals are pure substances. So, a nutshell is not a mineral.
science
Is the following trait inherited or acquired? Mona is good at knitting socks.
acquired
People are not born knowing how to knit. Instead, many people learn how to knit. Knitting well takes practice. So, knitting well is an acquired trait.
science
What evidence of a volcanic eruption does this picture show?
A red liquid is coming out of the ground.
science
What information supports the conclusion that Hugo inherited this trait?
Hugo's biological parents have wavy hair.
science
What is the source of the allusion in the sentence below? Ted says that he would not be the person he is today were it not for his childhood, which he describes as Dickensian.
literature
The source of the allusion Dickensian is literature. The works of British author Charles Dickens often featured characters struggling to survive in settings such as debtors' prisons and orphanages. The allusion Dickensian means harsh or poverty-stricken.
science
Which continent is highlighted?
South America
This continent is South America.
science
Is a juice box a good or a service?
a good
To decide whether a juice box is a good or a service, ask these questions: Is a juice box something you can touch? Yes. Is a juice box a job you might pay someone else to do? No. So, a juice box is a good.
science
Complete the sentence. A piece of apple turning brown is a ().
chemical change
A piece of apple turning brown is a chemical change. The apple reacts with oxygen in the air and turns into a different type of matter. If you scrape off the brown layer of the apple, the inside is still white. The inside hasn't touched the air. So the chemical change didn't happen to that part of the apple.
science
What is the expected ratio of offspring with black fur to offspring with brown fur? Choose the most likely ratio.
4:0
To determine how many boxes in the Punnett square represent offspring with black fur or brown fur, consider whether each phenotype is the dominant or recessive allele's version of the fur color trait. The question tells you that the F allele, which is for black fur, is dominant over the f allele, which is for brown fur...
science
Which text uses the word ironic in its traditional sense?
Last winter, Turner took a vacation to Florida to escape Boston's cold, snowy weather. In an ironic twist, a rare snowstorm happened to hit Florida that week.
The first text uses ironic in its traditional sense: contrary to what was intended, often in an amusing way. It's ironic because Turner tried to get away from the snow but found himself in a snowstorm regardless. Last winter, Turner took a vacation to Florida to escape Boston's cold, snowy weather. In an ironic twist, ...
science
Is the following statement about our solar system true or false? The volume of Uranus is less than ten times the volume of Neptune.
true
To determine if this statement is true, calculate the value of ten times the volume of Neptune. Then compare the result to the volume of Uranus. The volume of Uranus is 6.83 x 10^13 km^3, which is less than 6.25 x 10^14 km^3. So, the volume of Uranus is less than ten times the volume of Neptune.
science
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.
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.
science
What do these two changes have in common? plants making food from sunlight, air, and water rust forming on a metal gate
Both are chemical changes.
Step 1: Think about each change. Plants making food is a chemical change. Plants use energy from sunlight to change air and water into food. The food is sugar. Sugar is a different type of matter than air or water. Rust forming on a metal gate is a chemical change. As the gate rusts, the metal turns into a different ty...
science
Complete the statement. During this chemical reaction, the solution becomes ().
colder
To determine whether the solution becomes warmer or colder, look for the text that describes the movement of thermal energy during the reaction.Pickling is used to prevent foods such as meat and vegetables from spoiling too soon. Food that has been pickled may remain edible for more than a year! One type of pickling in...
science
Which is a run-on sentence?
The park is a beautiful place, everyone goes there.
The park is a beautiful place, everyone goes there is a run-on sentence. It has two sentences that are joined by just a comma: The park is a beautiful place and Everyone goes there.
science
How long is a parking space?
20 feet
The best estimate for the length of a parking space is 20 feet. 20 inches is too short. 20 yards and 20 miles are too long.
science
Which word would you find on a dictionary page with the following guide words? pleasant - push
protect
Put the words in alphabetical order. Since protect is between the guide words pleasant - push, it would be found on that page.
science
Which country is highlighted?
Solomon Islands
This country is Solomon Islands.
science
Select the amphibian below.
great crested newt
An emu is a bird. It has feathers, two wings, and a beak. Emus cannot fly, but they can run very fast. They run to avoid predators. A Madagascar day gecko is a reptile. It has scaly, waterproof skin. Many geckos have special pads on their toes. The pads help them climb up plants and rocks. A piranha is a fish. It lives...
science
Which logical fallacy is used in the text? Denise said there's no way Scotland's Loch Ness Monster is real, but she's not even Scottish, so there's no way she could really know.
ad hominem: an attack against the person making the argument, rather than the argument itself
The text argues that Denise's claim that the Loch Ness Monster isn't real is not valid because she's not Scottish. This is a personal attack on Denise's background that isn't relevant to whether her claim is valid. This illustrates a type of logical fallacy known as ad hominem.
science
Identify the question that Kirk's experiment can best answer.
Do muffins made with white flour have larger volumes than muffins made with whole wheat flour?
science
Which correctly shows the title of a short story?
"The Story of a Mother"
Capitalize the first word, the last word, and every important word in between. The words of and a are not important, so they should not be capitalized. The correct title is "The Story of a Mother."
science
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.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them. Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud...
science
Which of these states is farthest north?
Missouri
To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Missouri is farthest north.
science
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
Look at the diagram again. It shows you how the solution changed during the process of diffusion. Before the solute particles reached equilibrium, there was 1 solute particle on the left side of the membrane and 5 solute particles on the right side of the membrane. When the solute particles reached equilibrium, there w...
science
Which correctly shows the title of a book?
Sarah, Plain and Tall
Capitalize the first word, the last word, and every important word in between. The word and is not important, so it should not be capitalized. The correct title is Sarah, Plain and Tall.
science