allenai/quartz huggingface dataset:
Background: The thinner the wire, the more resistance it offers.

Question: A thinner wire will give _____ resistance.
Choices:
more
less
Answer: A
Background: As the Universe expands, galaxies move further and further apart.

Question: When a city contracts the distance across the city
Choices:
decreases
increases
Answer: A
Background: Larger alkenes have lower boiling and melting points.

Question: The smaller the alkene the _____ boiling and melting points.
Choices:
lower
higher
Answer: B
Background: When a person smokes there are chemicals released by the tobacco that enter the lungs. Because the lungs have to work harder to remove the chemicals, the body has to work harder to get the air needed to survive.

Question: If the amount of chemicals inside of Jim's lungs decreases, what will happen to the amount of air his lungs can process?
Choices:
increase
decrease
Answer: A
Background: The more branching there is in isomers, the lower the boiling and melting points are.

Question: If an isomer has more branching than another isomer, it should have a _____ melting point.
Choices:
higher
lower
Answer: B
Background: As more resistors are added in series, the total resistance of the circuit increases.

Question: If Mona is building a circuit and she adds less resistors in series, what happens to the total resistance of the circuit?
Choices:
increases
decreases
Answer: B
Background: As greenhouse gases increase, changes will be more extreme.

Question: If greenhouse gases were greatly increased, we can expect a _____ chance of extreme changes.
Choices:
higher
lower
Answer: A
Background: If the gas is heated, the particles will move faster as they gain more energy.

Question: Dana wants the gas to move freely, with as much energy as possible so the particles can move quickly. Dana will then do this to the gas
Choices:
cool
heat
Answer: B
Background: Solar power is expensive, but as demand increases technology improves and costs decrease.

Question: As less solar panels are made the price of them will
Choices:
go up
go down
Answer: A
Background: Warm water cant hold as much dissolved oxygen as cool water, so an increase in the temperature of water decreases the amount of oxygen it contains.

Question: The _____ waters have the most dissolved oxygen.
Choices:
warmest
coldest
Answer: B
Background: The longer the resistor, the more resistance it has.

Question: If Jim makes his resistor shorter, the resistance is exhibits is
Choices:
smaller
greater
Answer: A
Background: Shorter wavelengths (higher frequencies) correspond to higher energies and thus hotter star temperatures.

Question: Would a star that is significantly hotter than the sun, which is outputting blue light which is higher in frequency that the yellow light of the Sun, be
Choices:
hotter
colder?
Answer: A
Background: As the rocks move deeper into the Earth, temperature and pressure increase.

Question: Ulysses pilots his drill ship deep into the Earth's core, then back up. His ship is subjected to _____ temperature and pressure at the surface.
Choices:
less
more
Answer: A
Background: Because richer nations use more fossil fuels, they also cause more air pollution and global warming than poorer nations do.

Question: A country like the US burns more fossil fuels than a third world country. This means that a third world country causes _____ pollution than a richer country.
Choices:
more
less
Answer: B
Background: The more extreme the amount of metamorphism, the more difficult it is to tell what the original rock was.

Question: Jeff put a rock under extreme metamorphosis. The rock probably _____ its original form.
Choices:
resembles
does not resemble
Answer: B
Background: Fossils found at the lowest layer of rock would be the oldest, as these would have been buried for the longest time, whereas fossils found closer to the surface would be buried more recently and therefore be younger.

Question: Jonathan is digging at a site, trying to uncover old rocks. In order to find the oldest rocks, Jonathan needs to dig
Choices:
deeper
less deep
Answer: A
Background: The closer to the surface an aquifer is, the easier it is to get the water.

Question: If Milo is hunting for water and he finds two water sources, which one will it be easier for him to extract water from?
Choices:
one close to the surface
one far from the surface
Answer: A
Background: The longer the exposure, the more light that the telescope can gather to make the image.

Question: Will was using a flashlight. He used a long exposure and a short exposure. Which exposure likely made the stars seem brighter?
Choices:
short
long
Answer: B
Background: Greater use of oil and other fossil fuels causes more pollution.

Question: When we have less cars on the road the pollution levels
Choices:
decrease
increase
Answer: A
Background: More UV rays increase skin cancer rates.

Question: John was studying skin disease in his research lab. He observed that the more UV rays that contact the skin resulted in skin cancer rates becoming
Choices:
Larger
Smaller
Answer: A
Background: The stronger the winds are blowing, the larger the waves are and the more energy they have.

Question: Waves _____ when winds blow lighter.
Choices:
increase
decrease
Answer: B
Background: An object has greater momentum if it has greater mass, greater velocity, or both.

Question: A smaller boulder will roll down a hill _____ than a larger one.
Choices:
faster
slower
Answer: B
Background: More UV rays increase skin cancer rates.

Question: Eric went out into the sun from his room. The sun has fewer UV rays than the tanning light he was using in his room. His chance of skin cancer likely goes
Choices:
up
down
Answer: B
Background: New farm machines were invented. They increased the amount of food that could be produced. With more food, people were healthier and could live longer.

Question: An increase in food will likely lead to _____ lifespans.
Choices:
shorter
longer
Answer: B
Background: The farther the sound waves travel away from the source, the more spread out their energy becomes.

Question: If Milo is listening to the radio and he moves closer to the radio in the room, what happens to the sound waves entering his ear?
Choices:
they spread out less
they spread out more
Answer: A
Background: The more the baby suckles, the more prolactin is released, which causes more milk to be produced.

Question: Jill was watching her baby as she was breastfeeding it. She noticed that the less that the baby suckled, the amount of prolactin released became
Choices:
Greater
Lesser
Answer: B
Background: A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.

Question: If greenhouse gas were to be halved, the global temperature would
Choices:
increase
decrease
Answer: B
Background: Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere.

Question: John noted something very interesting on his trip to the mountain. When there is less air above a telescope, the interference is
Choices:
More
Less
Answer: B
Background: Solar power is expensive, but as demand increases technology improves and costs decrease.

Question: Ryan noticed that a unpopular solar panel is _____ expensive than it was.
Choices:
more
less
Answer: A
Background: Water flowing over a steeper slope moves faster and causes more erosion.

Question: Liv is playing with an adjustable water slide. When she makes the angle steeper, water will slide down
Choices:
slower
faster
Answer: B
Background: The further objects are away from each other, the smaller the gravitational force.

Question: Planets moving apart means there will be _____ gravitational force between them.
Choices:
more
less
Answer: B
Background: If you are standing on the shore and a ship is going out to sea, the ship gets smaller as it moves further away from you.

Question: Rita walks closer to Sue. From Sue's perspective, Rita will
Choices:
shrink
grow
Answer: B
Background: Temperature increases with depth inside the Earth, so melting of rocks is more likely to occur at greater depths.

Question: James is boring deep into the Earth. His shuttle is more likely to burn up at _____ depths.
Choices:
shallow
deep
Answer: B
Background: Shorter wavelengths (higher frequencies) correspond to higher energies and thus hotter star temperatures.

Question: If Milo decreases the frequency on his shortwave radio, it does what to the amount of energy the radio is producing?
Choices:
increases
decreases
Answer: B
Background: Longer wires have more resistance than shorter wires.

Question: As cables get shorter they need to get thinner because short cables have
Choices:
less resistance
more resistance
Answer: A
Background: In Life Sciences it is important to note that whenever a structure has an increased surface area, there is an increase in the functioning of that structure.

Question: A cell in a dog's large intestine grew in surface area, which allowed the cell to take in more nutrients. This means that the cell's increased surface area allowed its functioning to
Choices:
increase
decrease.
Answer: A
Background: The more branching there is in isomers, the lower the boiling and melting points are.

Question: If an isomer has less branching than another isomer, it should have a _____ melting point.
Choices:
higher
lower
Answer: A
Background: The more acidic a solution is, the closer its pH value will be to 0

Question: Eric drank a glass of juice. The juice tasted sour. The pH of the drink is likely close to
Choices:
0
14
Answer: A
Background: The darker the urine, the less water it contains.

Question: Mona urinated yesterday morning and the urine was very light. When she urinated today the urine was very dark. Which urination contained more water?
Choices:
yesterday morning
today
Answer: A
Background: The surface is heated by the Sun and some of that heat radiates back into the air. This makes the temperature higher near the surface than at higher altitudes.

Question: Jeff goes to Death Valley and launches his personal spacecraft into orbit. As he rises in altitude, the temperature he feels
Choices:
drops
rises
Answer: A
Background: Countries with more industry produce more hazardous wastes than those with little industry.

Question: It is likely that China produces less hazardous waste than Canada because it has
Choices:
less industries.
more or
Answer: A
Background: More recently, the death rate has fallen because of the availability of more food and medical advances.

Question: Ian's town had fewer deaths this year since the food supply changed, which means that this year the food amounts were
Choices:
increased
decreased
Answer: A
Background: Smoking reduces the amount of oxygen available for diffusion at the lungs, so less oxygen gets absorbed and blood is oxygenated to a lesser degree.

Question: Will is smoking a cigarette. This causes _____ oxygen to be available for diffusion in his lungs, so less oxygen will be absorbed into his blood.
Choices:
more
less
Answer: B
Background: The more field lines that are drawn, the stronger the field.

Question: John was looking at pictures of the field. He could see that the fewer lines there were, the field would be
Choices:
Stronger
Weaker
Answer: B
Background: The more basic a solution is, the closer its pH value will be to 14.

Question: Tanya was measuring pH values and recorded a value of 13 for Solution #1. She also recorded a value of 8 for Solution #2. Which solution is less basic?
Choices:
Solution #2
Solution #1
Answer: A
Background: Areas near the equator are warmer than areas near the poles because they receive more direct sunlight.

Question: Eric is researching near the Equator. Rob is researching near the North Pole. The coldest area is
Choices:
Eric's
Reid's
Answer: B
Background: The Moon has a greater effect on the tides because, although it is much smaller than the Sun, it is much closer.

Question: What will happen to the effect on ocean tides if the Moon were to move closer to the Earth?
Choices:
greater effect
smaller effect
Answer: A
Background: The gravitational force between two objects decreases as the objects move further apart.

Question: Would an astronaut feel a lesser gravitational pull from the Earth when he is standing
Choices:
on the floor of his house
on the surface of Mars?
Answer: B
Background: The more tightly packed the particles inside the material are, the more dense we say they are.

Question: Eric has a soccer ball and kicks it into a rock of roughly the same size. The rock doesn't move and the ball bounces away. The ball is _____ dense than the rock.
Choices:
less
more
Answer: A
Background: With higher frequencies, the microwaves also have more energy.

Question: Tim adjusted his microwave so that it was at a higher frequency. This resulted in the waves inside the microwave to have
Choices:
less energy
more energy.
Answer: B
Background: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.

Question: Something with a lot of hydrogen ions would have what pH value?
Choices:
high
low
Answer: B
Background: The more similar the DNA molecules of different species are, the closer the relationship is likely to be.

Question: Two species with dissimilar DNA should have a _____ relationship.
Choices:
close
distant
Answer: B
Background: The darker the urine, the less water it contains.

Question: Katie had to pee, and when she did, she noticed that her urine was quite light. The lightness in the urine means Katie should drink water in amounts that are
Choices:
smaller
larger
Answer: A
Background: The older a person is, the greater their chance of developing a cardiovascular disease.

Question: An young person has a _____ risk of developing a cardiovascular disease than a elderly person.
Choices:
higher
lower
Answer: B
Background: If the gas is heated, the particles will move faster as they gain more energy.

Question: If John heats a gas in his bunsen burner, what would happen to the gas particles?
Choices:
they would move faster
they would move slower
Answer: A
Background: Objects that are closer together have a stronger force of gravity between them.

Question: As two asteroids drift closer together, does the gravitational force they exert on each other
Choices:
increase
decrease?
Answer: A
Background: The upper rock layers are much younger.

Question: The rocks that are deep inside a volcano are
Choices:
young
old
Answer: B
Background: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.

Question: Will sees a wave with a frequency of 60hz and a wave with a frequency of 10hz. Which wave has less energy?
Choices:
the 60hz wave
the 10hz wave
Answer: B
Background: Bases have pH values above 7. The higher the pH value, the more strongly basic the substance.

Question: If Mona is filling her pool with chemicals to change the pH level of the water and she increases the pH, what happens to the baseness of the water?
Choices:
increase
decrease
Answer: A
Background: Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.

Question: If you are deflating a balloon with water it will get
Choices:
smaller
larger
Answer: A
Background: Richer nations use far more energy resources, especially fossil fuels, than poorer nations do.

Question: Suzie is studying different countries and the amount of energy sources they use. She finds that South Africa is poorer than the United States. Therefore, _____ uses less energy sources.
Choices:
South Africa
the United States
Answer: A
Background: Higher frequency waves have greater energy.

Question: Wendy decreases the frequency of her radio's sound waves. These waves now have _____ energy.
Choices:
more
less
Answer: B
Background: Because these isotopes decay more slowly, they can be used to date much older specimens.

Question: Fred has an isotope that decays slowly. What is likely true about it?
Choices:
it can be used to date older specimens
it can't be used to date old specimens
Answer: A
Background: Countries with more industry produce more hazardous wastes than those with little industry.

Question: If your country has a lot of industry it likely has _____ hazardous waste.
Choices:
a lot of
not so much
Answer: A
Background: If blood volume in the body decreases, blood pressure decreases.

Question: After a car accident, Carla loses a lot of blood. At the hospital, the doctors tell her that her blood pressure is now
Choices:
increased
decreased
Answer: B
Background: The stronger the winds are blowing, the larger the waves are and the more energy they have.

Question: Waves can be made by wind, on a windy day would we expect to have
Choices:
larger waves
smaller waves
Answer: A
Background: The forest habitat of elephants has also decreased in size due to humans moving in, so the numbers of the elephants have decreased.

Question: To have less elephants, we should _____ forests near them.
Choices:
increase
decrease
Answer: B
Background: When two skateboarders push against each other, it causes them to move apart. The harder they push together, the farther apart they move.

Question: Will and Tony are skateboarding and push against each other with force. As the force with they push with decreases, the distance they travel away from each other
Choices:
decreases
increases
Answer: A
Background: A thinner wire is more difficult for electrons to move through than a thicker wire.

Question: If Mona is spinning some wire at her job and she makes the wire thinner, what happens to the ease at which electrons can pass through that wire?
Choices:
easier
harder
Answer: B
Background: Greater use of oil and other fossil fuels causes more pollution.

Question: Mike is looking at two cars to buy. The first car, a Toyota, uses twice as much oil and fossil fuels to run, compared to the Kia he is looking at. If Mike wants to buy the car that causes more pollution, he should buy the
Choices:
Toyota
Kia
Answer: A
Background: Size restriction: The final body size is limited because as the body size increases, the surface area to volume ratio decreases.

Question: If your body size were to increase, your surface area to volume ratio would
Choices:
decrease
increase
Answer: A
Background: Older rocks are at the bottom and younger rocks are at the top.

Question: A person is digging up rocks, and wants to get the oldest ones. The person will dig
Choices:
deeper
shallower
Answer: A
Background: Warmer molecules vibrate faster than cooler ones.

Question: As molecules start moving slower they get
Choices:
warmer
colder
Answer: B
Background: A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.

Question: If Mona's country normally emits not a lot of greenhouse gas, but one day decides to raise the amount they emit, what will happen to the global temperature?
Choices:
increase
decrease
Answer: A
Background: The more basic a solution is, the closer its pH value will be to 14.

Question: If Jim decreases how basic his solution is, it means the solution proximity to pH 14 is
Choices:
decreased
increased
Answer: A
Background: Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.

Question: For radio transmissions, longer wavelength waves have
Choices:
higher or
lower frequencies.
Answer: B
Background: Objects with greater mass have greater inertia.

Question: Jerry weighs 200 pounds. Polly weighs 120 pounds. Who has less inertia?
Choices:
Jerry
Polly
Answer: B
Background: Warm air is less dense than cool air, so it rises higher in the troposphere.

Question: Cold air is able to fill less space than warm air because it is
Choices:
more dense
less dense
Answer: A
Background: For a given medium such as air, sound has a slower speed at lower temperatures.

Question: Would a microphone designed to listen for avalanches detect the sound of falling snow later on a
Choices:
warm day
colder day?
Answer: B
Background: Higher-frequency waves have more energy.

Question: If Mona is generating microwaves while defrosting her meat and she decreases the frequency of them, what happens to the amount of energy she is generating?
Choices:
increases
decreases
Answer: B
Background: Breast cancer is rare in teens. It becomes more common as women get older.

Question: What happens to Susie's chance of contracting breast cancer as she gets older?
Choices:
increases
decreases
Answer: A
Background: In Life Sciences it is important to note that whenever a structure has an increased surface area, there is an increase in the functioning of that structure.

Question: What will happen to the functionality of a structure if decreases the surface area of it?
Choices:
functionality increases
functionality decreases
Answer: B
Background: The upper rock layers are much younger.

Question: The archaeologist was digging and saw that the youngest rocks were in layers that were
Choices:
shallower
deeper
Answer: A
Background: People in the richer nations of the world use far more energy, especially energy from fossil fuels, than people in the poorer nations do.

Question: Mike lives in the USA while Mosha lives in Nigeria, which likely uses less energy on a daily basis?
Choices:
Mike
Mosha
Answer: B
Background: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.

Question: A wave with less energy than another will have a _____-frequency.
Choices:
lower
higher
Answer: A
Background: The folds present in the membrane increase the surface area allowing more ribosomes to be present on the ER, thereby allowing greater protein production.

Question: If Mona is creating a membrane to filter out some dirty water and she creates fewer folds in the membrane, what happens to the total surface area of that membrane?
Choices:
increases
decreases
Answer: B
Background: The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.

Question: When you go into a cave, the rocks at shallower levels are _____ than the rocks on the surface.
Choices:
younger
older
Answer: A
Background: For bases we can state the folllowing: The higher the pH of a substance, the more basic it is.

Question: If Milo is adjusting the pH of his pool and decreases it, what happens to how basic the solution in the pool is?
Choices:
increases
decreases
Answer: B
Background: Objects that are closer together have a stronger force of gravity between them.

Question: What would happen to the force of gravity between two soccer balls if Jim moved them farther apart?
Choices:
it would increase
it would decrease
Answer: B
Background: Lower temperature and higher salinity yield the densest water.

Question: If Mona is freezing a glass of water and the temperature of the water begins to decrease, what happens to the density of that water?
Choices:
increases
decreases
Answer: A
Background: The bigger the waves are and the more sediment they carry, the more erosion they cause.

Question: A part of the beach is smooth, and another part is very rough. The waves on the smooth part of the beach are probably
Choices:
larger
smaller
Answer: A
Background: The more branching there is in isomers, the lower the boiling and melting points are.

Question: If Jim is trying to lower the melting point of an isomer, what should he do to the number of branching points of the isomer?
Choices:
decrease them
increase them
Answer: B
Background: Higher frequency waves have greater energy.

Question: Waves that come in very slowly to the shores have
Choices:
more energy
less energy
Answer: B
Background: We need to reduce our electricity consumption in order to reduce pollution.

Question: Will increased his house energy consumption. He has _____ his personal levels of pollution.
Choices:
increased
decreased
Answer: A
Background: More pollutants mean poorer air quality.

Question: After the pile of tires at the landfill caught on fire, the smoke released into the air made the air quality
Choices:
better?
worse
Answer: B
Background: As more resistors are added in series, the total resistance of the circuit increases.

Question: John was building a circuit in the electrical room when he noticed something. The more resistors he added, the level of resistance would
Choices:
Decrease
Increase
Answer: B
Background: The stratosphere contains the ozone layer, the temperatures increase as altitude increases.

Question: Dean is going into space, and passes through the stratosphere. He looks at the temperature around him as he does, and he sees that as he heads into space, the temperature
Choices:
increases
decreases
Answer: A
Background: The closer objects are, the stronger the gravitational pull between them.

Question: If Milo is holding two oranges 5 feet apart and he moves them so they are 10 feet apart, what happens to the gravitational pull between the objects?
Choices:
decreases
increases
Answer: A
Background: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.

Question: As we release the air from a balloon the number of reactions in the balloon
Choices:
increase
decrease
Answer: B
Background: The more acidic a solution is, the closer its pH value will be to 0

Question: Compared to a solution of acidic vinegar, would basic lye have a pH value
Choices:
closer to 0
farther away from 0?
Answer: B
Background: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.

Question: Don notices that the patient's heart is expelling less blood with each stroke. The patient's heart has to beat _____ often to maintain consistent blood flow.
Choices:
more
less
Answer: A
Background: A: The more carbon atoms there are, the greater the number of possible arrangements of carbon atoms.

Question: An increase of carbon atoms will result in _____ possible arrangements.
Choices:
less
more
Answer: B
Background: The more similar the DNA molecules of different species are, the closer the relationship is likely to be.

Question: When we look at monkeys and humans they have a lot of matching DNA meaning they are.
Choices:
similar
very different
Answer: A
Background: The warmer a climate is, the more types of vegetation it will have and the greater the rate of biological weathering.

Question: Plants grow more poorly in the tundra because it is
Choices:
colder
warmer
Answer: A
Background: Longer wires have more resistance than shorter wires.

Question: Chris ran a wire 3 foot long. Ron ran a wire 10 foot long. If all else was the same, the wire that Chris ran had
Choices:
more resistance
less resistance.
Answer: B
Background: As the population increases, the food supply, or the supply of another necessary resource, may decrease.

Question: A wolf pack recently added twenty pups to the pack. The greater number of wolves in the pack means that the availability of food will be
Choices:
greater
lesser
Answer: B
Background: Larger alkenes have lower boiling and melting points.

Question: You are conducting an experiment on alkenes and discover that your smaller alkenes have _____ boiling and melting points than the larger ones.
Choices:
lower
higher
Answer: B
Background: Electrons at lower energy levels, which are closer to the nucleus, have less energy.

Question: An electron with a low energy level will have energy that is
Choices:
lower
higher
Answer: A
Background: Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.

Question: Carrying things instead of using a truck does what to physical labor
Choices:
Increases it
Decreases it
Answer: A
Background: The bigger the waves are and the more sediment they carry, the more erosion they cause.

Question: When there are few waves things are eroded
Choices:
faster
slower
Answer: B
Background: Older age, male gender, and a family history of cardiovascular disease all increase the risk of developing cardiovascular diseases and cant be controlled.

Question: Clark is 55. Morgan is 25. A scientist is researching which of these two men is more likely to develop cardiovascular disease. If their ages is the only piece of info that the scientist has, then he would say _____ is less at risk for cardiovascular disease.
Choices:
Clark
Morgan
Answer: B
Background: Warmer molecules vibrate faster than cooler ones.

Question: Lisa is heating soup on the stove. The molecules will begin to vibrate _____ as the soup heats up.
Choices:
slower
faster
Answer: B
Background: More particles inside the container means more collisions, and more collisions mean a higher pressure.

Question: John was watching the particles as they interacted with each other. He found that the lower the pressure, the collisions were
Choices:
Higher
Lower
Answer: B
Background: Less massive objects also have less gravity than more massive objects.

Question: Mary was comparing the size of two objects. If she examined an orange and compared it with a watermelon, which would generate more gravity?
Choices:
orange
watermelon
Answer: B
Background: Lighter, more streamlined vehicles need less energy.

Question: If Jon adds more weight to his car, he will need to use _____ energy.
Choices:
less
more
Answer: B
Background: Larger telescopes can collect more light.

Question: Ian wants to be able to see the least light coming from the stars at night, so the telescope that he will use will be
Choices:
larger
smaller
Answer: B
Background: To reduce friction, oil is added to the engine.

Question: When two pieces of metal are rubbing together and sandpaper is added between them the friction
Choices:
decreases
increases
Answer: B
Background: Bigger stars produce more energy, so their surfaces are hotter.

Question: Annette took temperature readings of two different stars far off in the Milky Way galaxy. Star B produced twice the energy of Star A, so _____ was seen to have the higher temperature.
Choices:
Star A
Star B
Answer: B
Background: The forest habitat of elephants has also decreased in size due to humans moving in, so the numbers of the elephants have decreased.

Question: If a herd of elephants is living happily in a forest and a group of humans then decides to move in, what happens to the elephants?
Choices:
they decrease in number
they increase in number
Answer: A
Background: The density of the atmosphere decreases with an increase in the height above sea level (altitude).

Question: What would happen to the atmosphere as Jim climbed lower down a mountain?
Choices:
it would become less dense
it would become more dense
Answer: B
Background: Objects with greater mass have greater inertia.

Question: Jerry weighs 200 pounds. Polly weighs 120 pounds. Who has more inertia?
Choices:
Jerry
Polly
Answer: A
Background: An object has greater momentum if it has greater mass, greater velocity, or both.

Question: Marie is rolling cards down a hill. She wants to know which cart will get to the bottom of the hill slower, an empty cart, or a full cart? The cart that will finish first will have a mass that is
Choices:
lower
higher
Answer: A
Background: The size of the eroded particles depends on the velocity of the water. Eventually, the water deposits the materials. As water slows, larger particles are deposited. As the water slows even more, smaller particles are deposited.

Question: Mike wants to see how fast water can run while still depositing small particles. In order to get the smallest particles deposited, Mike will need the water to be running
Choices:
quickly
slowly
Answer: B
Background: The hotter a main sequence star is, the brighter it is.

Question: Mona is an astronomer who looks at stars for a living. If she is observing how hot certain stars are and she notices that one is cooler then the others, what does that say about the brightness of that star?
Choices:
it's dimmer
it's brighter
Answer: A
Background: With fewer trees, the air is drier and droughts are more common.

Question: The logging company in your town is proposing they clear cut several thousand acres of trees. If they do so, the chances of droughts in your area will
Choices:
decrease
increase
Answer: B
Background: Air in the troposphere is warmer closer to Earths surface.

Question: When you are driving down a mountain you will notice the temperature
Choices:
decreases
increases
Answer: B
Background: The water table is higher when there is a lot of rain and lower when the weather is dry.

Question: If Mona lives in a country that gets a lot of rain and it does not rain one day, what does that do to the water table?
Choices:
increases
decreases
Answer: B
Background: If we have two materials with the same volume, the material with a higher mass will be more dense.

Question: Jake pours syrup into one cup, then pours water into another, both in equal amounts. Jack can know that the syrup is the more dense of the fluids because it has
Choices:
more mass
less mass
Answer: A
Background: With a higher concentration of hydrogen ions, a solution is more acidic but has a lower pH.

Question: If Milo decreases the concentration of hydrogen ions in his swimming pool, what happens to the acidity of his pool?
Choices:
increases
decreases
Answer: B
Background: The longer the resistor, the more resistance it has.

Question: A resistor with much resistance indicates it is
Choices:
long
short
Answer: A
Background: Bacteria with a mutation the helps resist antibiotics increase in numbers, so the mutation becomes more common.

Question: If Milo is growing a certain type of bacteria that can resist antibiotics and he increases the amount of bacteria he is growing, would mutations in the bacteria
Choices:
increase
decrease
Answer: A
Background: If blood volume in the body decreases, blood pressure decreases.

Question: Rick lost a lot of blood after cutting himself. His blood pressure rapidly
Choices:
increases
decreases
Answer: B
Background: The greater the objects mass, the greater the force of gravitational attraction.

Question: John dropped a bowling ball and a tennis ball from the roof. Which ball would have the least gravitational pull?
Choices:
bowling ball or
tennis ball.
Answer: B
Background: The more an elastic object is stretched or compressed, the greater its elastic potential energy is.

Question: When we crumple a rubber band it has
Choices:
high potential energy
low potential energy
Answer: A
Background: As the rocks move deeper into the Earth, temperature and pressure increase.

Question: If Milo is exploring underground and he goes closer to surface of the Earth, does he feel more or less pressure?
Choices:
more
less
Answer: B
Background: The elastic force increases the more the material is stretched or compressed.

Question: If a product is unstretched, elastic force will
Choices:
increase
decrease
Answer: B
Background: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.

Question: If Milo gets excited and his heart starts pumping more blood with each stroke, what happens to his heart rate?
Choices:
increases
decreases
Answer: B
Background: The stratosphere contains the ozone layer, the temperatures increase as altitude increases.

Question: Tina flew higher and higher into the stratosphere. The temperature of her ship
Choices:
increases
decreases
Answer: A
Background: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.

Question: As more people are removed from Earth, they will find _____ water scarcity.
Choices:
increasing
decreasing
Answer: B
Background: The forest habitat of elephants has also decreased in size due to humans moving in, so the numbers of the elephants have decreased.

Question: To have more elephants, we should _____ forests near them.
Choices:
increase
decrease
Answer: A
Background: Increasing air temperature decreases atmospheric pressure.

Question: If the air temperature falls during a heat wave, what is likely happening to the atmospheric pressure?
Choices:
It will increase
It will decrease
Answer: A
Background: Objects with greater mass have greater inertia.

Question: If Jimbo eats a lot of food and causes his mass to increase, what happens to his inertia?
Choices:
increases
decreases
Answer: A
Background: With higher levels of dissolved carbon dioxide in ocean water, the water becomes more acidic.

Question: If there were less dissolved carbon dioxide in ocean water, the ocean's rate of acidity would
Choices:
increase
decrease
Answer: B
Background: Differences in air pressure over the surface of the Earth result in wind. The greater the differences in air pressures, the stronger the wind.

Question: Linda felt the pressure of the hurricane, as the winds got _____.
Choices:
stronger
weaker
Answer: A
Background: Lighter, more streamlined vehicles need less energy.

Question: Joe drives a hybrid while Jim drives a large truck. Who uses more energy when driving?
Choices:
Joe
Jim
Answer: B
Background: As the Universe expands, galaxies move further and further apart.

Question: The decreasing distances between galaxies indicates the Universe is
Choices:
expanding
contracting
Answer: B
Background: The pupil automatically gets bigger or smaller to let more or less light in as needed.

Question: Dana was walking outside on a sunny day, and then went into a dark theater. Dana's pupil will now likely be _____ compared to when she was outside
Choices:
smaller
larger
Answer: B
Background: Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.

Question: Shirley wants to make sure that her frequencies are high, so she will have her wavelengths for the electromagnetic waves be
Choices:
shorter
longer
Answer: A
Background: If two objects have the same mass, the object with the higher temperature has greater thermal energy.

Question: If you were to heat up steel what would happen to its thermal energy?
Choices:
increase
decrease
Answer: A
Background: Objects with greater mass have greater inertia.

Question: Compared to the Sun, would the planet Earth have
Choices:
greater inertia
less inertia?
Answer: B
Background: Solar power is expensive, but as demand increases technology improves and costs decrease.

Question: Mona lives in a city that doesn't know much about solar power. As the citizens become less aware of solar and the benefits it offers, the demand for solar power falls. What happens to the cost of the technology as the demand decreases?
Choices:
increase
decrease
Answer: A
Background: The more efficient a device is, the greater the percentage of usable energy it produces.

Question: Theresa made a device that uses 25% of usable energy. Ryan made a device that uses 10% of usable energy. _____ made a device that is more efficient.
Choices:
Theresa
Ryan
Answer: A
Background: Areas near the equator are warmer than areas near the poles because they receive more direct sunlight.

Question: Eric is researching near the Equator. Rob is researching near the North Pole. The warmest area is
Choices:
Eric's
Reid's
Answer: A
Background: As the amount of water increases, the melting point of rock decreases.

Question: If Mona removes more water from her cauldron of melting rock, what will happen to the melting point of that rock?
Choices:
increase
decrease
Answer: A
Background: The closer objects are, the stronger the gravitational pull between them.

Question: Two suns closing in on each other will have _____ gravitational pull between them.
Choices:
increasing
decreasing
Answer: A
Background: In transipration, at warmer temperatures water molecules move faster, and the rate of evaporation from stomata is therefore much faster.

Question: Eric is observing the transpiration process. The water from the plants goes into the atmosphere _____ in higher temperatures.
Choices:
faster
slower
Answer: A
Background: Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.

Question: You can find tables that show the pH value of different fruits and vegetables. The fruits such as oranges are very acidic so they have a pH value that is
Choices:
higher
lower
Answer: B
Background: As the population increases, the food supply, or the supply of another necessary resource, may decrease.

Question: Jennifer noticed there were fewer and fewer bunny rabbits in the forest behind her house eating the berries that she used to make her summer pies. As the population of the bunnies decreases will the berries be
Choices:
Fewer?
More?
Answer: B
Background: The closer together the particles are, the greater the amplitude of the wave.

Question: If the particles move apart, the amplitude of the wave should
Choices:
increase
decrease
Answer: B
Background: The higher the pH value is, the stronger the base.

Question: If Jim increases the pH value of his swimming pool, the base becomes
Choices:
stronger
weaker
Answer: A
Background: Water also gets colder as you go deeper.

Question: As a diver goes into shallow water, the water gets
Choices:
warmer
colder.
Answer: A
Background: As greenhouse gases increase, changes will be more extreme.

Question: When we have a lot of greenhouse gases in the air what happens to the temperature?
Choices:
increases
stays the same
Answer: A
Background: Chemical weathering increases as: Temperature increases: Chemical reactions proceed more rapidly at higher temperatures.

Question: If Mona is performing a science experiment involving chemicals and she increases the temperature in her lab, what will happen to the amount of chemical weathering she experiences?
Choices:
increase
decrease
Answer: A
Background: The surface is heated by the Sun and some of that heat radiates back into the air. This makes the temperature higher near the surface than at higher altitudes.

Question: Paul started at the base of a mountain and climbed to its peak. The sky was clear and the sun was beating down on him all day. However, he noticed there was a clear temperature difference between the surface's temperature and the temperature at the top of the mountain peak. Where would he feel more heat?
Choices:
Surface
Mountain Peak
Answer: A
Background: Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.

Question: For radio transmissions, shorter wavelength waves have
Choices:
higher or
lower frequencies.
Answer: A
Background: A wave caused by a disturbance with more energy has greater amplitude.

Question: Chin Lu watched the tsunami get stronger, and cause a _____ wave.
Choices:
huge
tiny
Answer: A
Background: Areas near the equator are warmer than areas near the poles because they receive more direct sunlight.

Question: Mona loves to travel the world. She has been to nearly every country. If she notices that some countries appear to be warmer then others, what can she determine about their proximity to the equator?
Choices:
farther away
closer
Answer: B
Background: Bigger stars produce more energy, so their surfaces are hotter.

Question: Jan is comparing stars, specifically a large star and the smaller Sun. Given the size of each, Jan can tell that the Sun puts out heat that is
Choices:
lesser
greater
Answer: B
Background: A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.

Question: John's company committed to increase greenhouse gas production worldwide. What likely happens to the global temperature in the future as a result?
Choices:
it will increase
it will decrease
Answer: A
Background: The greater the objects mass, the greater the force of gravitational attraction.

Question: John dropped a bowling ball and a tennis ball from the roof. Which ball would have the greatest gravitational pull?
Choices:
bowling ball or
tennis ball.
Answer: A
Background: The more carbon atoms a hydrocarbon has, the greater the number of isomers.

Question: Eric has a hydrocarbon with 20 carbon atoms. Rita has a hydrocarbon with 35 carbon atoms. Whose hydrocarbon has fewer isomers?
Choices:
Eric
Rita
Answer: A
Background: Smaller sediments are dropped as the slope becomes less steep.

Question: Dan is watching sand fall down a small hill. The pieces of sand will be very
Choices:
large
small
Answer: B
Background: In electromagnetic waves with higher frequencies, photons have more energy.

Question: Don is looking at electromagnetic waves, and sees that the one's he observing have lower frequencies. Don is able to know then that the photons have energy that is
Choices:
higher
lower
Answer: B
Background: The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.

Question: Bryan was tasked with categorizing various fossils that the archeology team dug up. He knew they found some in rock layers near the surface and others in layers much farther below the ground. Which should he categorize as the older ones?
Choices:
near surface fossils
farther down fossils
Answer: B
Background: The more charged the objects are, the stronger the electrostatic force between them.

Question: If Jim increases the strength of the charge between two of his objects, what will happen to the electrostatic force between them?
Choices:
it will increase in strength
it will decrease in strength
Answer: A
Background: A fluid exerts pressure in all directions, but the pressure is greater at greater depth.

Question: Jorge and Rian were diving in the ocean. If Jorge dove 20 feet and Rian dove 10 feet, who experiences more pressure?
Choices:
Jorge
Rian
Answer: A
Background: It would be hard to get a big chunk of chocolate to dissolve in your milk or hot water. Maybe you could make hot chocolate from some smaller pieces like chocolate chips, but it is much easier to add a powder to your milk. This is because the smaller the pieces are, the more surface area they have.

Question: Mary melts a 1 pound chocolate bar and 1 pound of chocolate chips in two pots. Which melts last?
Choices:
bar
chips
Answer: A
Background: So the higher an object is above a surface, the more potential energy it has.

Question: The ball began to raise slowly above the table. The higher it rises above the table, the potential energy will
Choices:
decrease
increase.
Answer: B
Background: The sooner cancer is treated, the greater the chances of a cure.

Question: Don is getting screened for cancer. Because his cancer is caught late, after it had metastasized, the chance of a cure is
Choices:
greater
lesser
Answer: B
Background: A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.

Question: If greenhouse gas were to be doubled, the global temperature would
Choices:
increase
decrease
Answer: A
Background: The further objects are away from each other, the smaller the gravitational force.

Question: If Jim is playing with two objects and he moves them further away from each other, what will happen to the gravitational force between the two objects?
Choices:
increase
decrease
Answer: B
Background: The more current, the stronger the electromagnet.

Question: Dan was excited to try out an electromagnet but was later disappointed when it wasn't very effective. He knew however that if he changed the current he could make it stronger. How should he adjust the current?
Choices:
decrease it
increase it
Answer: B
Background: But the more computing power that goes into the model and the care with which the scientists construct the model can increase the chances that a model will be accurate.

Question: When we use weak technology to measure something it becomes
Choices:
more accurate
less accurate
Answer: B
Background: Bigger stars produce more energy, so their surfaces are hotter.

Question: Milo is trying to cool his room with a space heater. If he turns down the thermostat to a cooler setting, which is happening to the energy the heater is producing?
Choices:
increasing
decreasing
Answer: B
Background: Longer wires have more resistance than shorter wires.

Question: A longer wire will have _____ resistance than a shorter one.
Choices:
more
less
Answer: A
Background: As the nail grows, more cells are added at the nail bed.

Question: Milo has been cutting his nails out for a very long time. As his nails get shorter, what happens to the amount of cells added to them?
Choices:
increase
decrease
Answer: B
Background: Smoking reduces the amount of oxygen available for diffusion at the lungs, so less oxygen gets absorbed and blood is oxygenated to a lesser degree.

Question: Jim is a smoker. If he suddenly quits smoking cigarettes the amount of oxygen available in his lungs
Choices:
increases
decreases
Answer: A