allenai/quartz huggingface dataset:
Background: Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature.

Question: Dana is testing alkanes to see how they boil. She first heats up alkanes with more carbon atoms, and then some with fewer. The alkanes with more carbon atoms have a boiling point, compared to the other, that is
Choices:
lower
higher
Answer: A
Background: The more acidic a solution is, the closer its pH value will be to 0

Question: When a pH number is very low we say the item is:
Choices:
basic
acidic
Answer: B
Background: The harder the batter hits the ball, the greater will be its acceleration.

Question: If you use more force when accelerating a car it will go
Choices:
slower
faster
Answer: B
Background: The more extreme the amount of metamorphism, the more difficult it is to tell what the original rock was.

Question: Evan is picking up rocks on the beach. Some rocks are very basic small ones, and others are large, clumpy stones with different textures. The rocks that are more difficult to identify had amounts of metamorphism that were
Choices:
more extreme
less extreme
Answer: A
Background: The faster the clicks of a Geiger counter occur, the higher the level of radiation.

Question: A Geiger counter is clicking away, and suddenly speeds up quite a lot. The counter is telling people that the level of radiation is
Choices:
lower
higher
Answer: B
Background: In general, fossils in older rocks are less similar to modern organisms.

Question: When we look at DNA records we find that younger organisms are
Choices:
dissimilar
similar
Answer: B
Background: Lower rock layers were laid down earlier, so they are assumed to contain older fossils.

Question: Sean digs in the dirt and finds rocks that are buried very far down. Given how deep they were, Sean can assume that these rocks are
Choices:
younger
older
Answer: B
Background: As the nail grows, more cells are added at the nail bed.

Question: If a nail bed's cells are _____ , the nail is shrinking.
Choices:
decreasing
increasing
Answer: A
Background: If we increase the resistance in a series circuit, by adding more resistors, then the total current decreases.

Question: If Todd adds a resistor to the circuit, then the current will be
Choices:
stronger
weaker.
Answer: B
Background: In electromagnetic waves with higher frequencies, photons have more energy.

Question: If Mona is standing in the sun and it begins to get dimmer, what happens to the amount of energy the photons are emitting?
Choices:
decreases
increases
Answer: A
Background: The gravitational force between two objects decreases as the objects move further apart.

Question: Terry has two balls and pulls them apart from each other. The gravitational force between the balls
Choices:
increases
decreases
Answer: B
Background: Gluons make quarks attract each other more strongly the farther apart the quarks get.

Question: Ian is looking at quarks and sees that they are very, very attracted to each other. Ian knows that the distance between the quarks is currently
Choices:
close
distant
Answer: B
Background: The faster the clicks of a Geiger counter occur, the higher the level of radiation.

Question: Mahana was excited to see the nuclear bomb test and decided to sail closer for a better look. As he approaches the highest levels of radioactivity at the test site would the rate of clicking on his Geiger counter get
Choices:
faster or
slower
Answer: A
Background: With higher frequencies, the microwaves also have more energy.

Question: As waves on the ocean shrink in size and number they have.
Choices:
more energy
less energy
Answer: B
Background: Water becomes more dense when it is colder and when it has more salt.

Question: Given two equal measures of water by volume, which would be heavier
Choices:
ocean water
distilled water?
Answer: A
Background: The closer to pH 14, the more strongly basic the solution.

Question: If Jim brings his solution further from pH 14, what happens to the solution?
Choices:
becomes less basic
becomes more basic
Answer: A
Background: Waves with shorter wavelengths have more energy.

Question: When the ocean has waves far apart they have
Choices:
less energy
more energy
Answer: A
Background: As you increase the number of carbon atoms in a hydrocarbon, the number of isomers quickly increases.

Question: A hydrocarbon that doubles its carbon atoms will cause an _____ in the amount of isomers.
Choices:
decrease
increase
Answer: B
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 faster, an empty cart, or a full cart? The cart that will finish first will have a mass that is
Choices:
lower
higher
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 further away from Sue. From Sue's perspective, Rita will
Choices:
shrink
grow
Answer: A
Background: As the distance between the objects increases, the force of gravitational attraction decreases.

Question: Ron pulled two balls away from each other. The balls now experience _____ gravitational force due to each other.
Choices:
more
less
Answer: B
Background: The full box is harder to move because it has greater mass and therefore greater inertia.

Question: Rita added more food to the box. It is now _____ to move.
Choices:
harder
easier
Answer: A
Background: Most nutrients are washed into ocean water from land. Therefore, water closer to shore tends to have more nutrients.

Question: Will found water from a source 10m from shore. Eric found water from a source 2m from shore. Whose water likely contains the least nutrients?
Choices:
Will's
Eric's
Answer: A
Background: Less massive objects also have less gravity than more massive objects.

Question: Sue weighs 50kg while Tom weighs 100kg, who has more gravity?
Choices:
Sue
Tom
Answer: B
Background: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.

Question: There are many more people on the Earth today than there were hundreds of years ago. Because of this, there is
Choices:
more water
less water.
Answer: B
Background: The trade-off when the threads are closer together, is that more turns of the screw or bolt are needed to do the job because the distance over which the input force must be applied is greater.

Question: Compared to a lag bolt with a very fine thread, would a drywall screw of the same length with a coarse thread require
Choices:
fewer turns to drive into a hole>
more turns to drive into a hole
Answer: A
Background: Decreasing air temperature increases atmospheric pressure.

Question: John turned down the thermostat in his room. As the temperature of the room got lower, would the air pressure in the room
Choices:
decrease?
increase
Answer: B
Background: The glaciers on Earth are getting smaller and smaller as Earths temperature rises.

Question: If Earth's average temperature were to plummet, Earth's glaciers should
Choices:
decrease
increase
Answer: B
Background: The sooner cancer is treated, the greater the chances of a cure.

Question: Tina had her cancer discovered late. Her chances of a cure are likely _____ than if she had found it sooner.
Choices:
higher
lower
Answer: B
Background: Countries with more industry produce more hazardous wastes than those with little industry.

Question: Theresa lives in a first world country. Eric lives in a third world country. Whose country likely produces more hazardous waste?
Choices:
Eric's
Theresa's
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: Carter travels to the mountain and looks through a telescope. There is very little interference from the atmosphere, so Carter knows that above the telescope, there is _____ air compared to sea level.
Choices:
less
more
Answer: A
Background: The hotter a resistor becomes the more resistance it has.

Question: If a piece of wire it gets very hot it will have
Choices:
more resistance
less resistance
Answer: A
Background: With less ozone in the stratosphere, more UV rays reach the ground.

Question: If Milo lives in a country that stops producing pollution which causes the ozone layer to increase, what happens to the amount of UV rays that can reach the ground?
Choices:
increase
decrease
Answer: B
Background: To reduce friction, oil is added to the engine.

Question: Dana wants things to stay put easily with the help of a lot of friction, so she uses oil in amounts that are
Choices:
greater
smaller
Answer: B
Background: Air in the troposphere is warmer closer to Earths surface.

Question: When you are driving up a mountain you will notice the temperature
Choices:
decreases
increases
Answer: A
Background: The planets further from the Sun will have bigger orbits, and therefore take longer to revolve around the Sun.

Question: Compared to Mercury, which is the closest planet to the Sun, would Neptune, which is the furthest planet from the Sun have a
Choices:
larger orbit
smaller orbit?
Answer: A
Background: Waves with shorter wavelengths have more energy.

Question: Dean is trying to get a wavelength that has more energy, so Dean will have his wavelength produce waves that are
Choices:
shorter
longer
Answer: A
Background: Lighter, more streamlined vehicles need less energy.

Question: Does it take more or less energy to power a bulky vehicle?
Choices:
more
less
Answer: A
Background: If the gas is cooled, the particles will move more slowly, because they will have less energy.

Question: As gas in the plant is cooling down, Gabe notices that the particles are moving more
Choices:
slowly
faster.
Answer: A
Background: The closer together the particles in a longitudinal wave are, the greater the amplitude.

Question: If Mona creates a longitudinal wave and decreases the distance of the particles in the wave, what happens to the amplitude of that wave?
Choices:
increases
decreases
Answer: B
Background: The closer the field lines are drawn together, the stronger the field being described.

Question: Compared to a field represented by lines spaced every two inches on a sheet of paper, if another field were drawn at the same scale with lines spaced every inch, the second field would be
Choices:
described as stronger
described as weaker?
Answer: A
Background: By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.

Question: What happens when you lighten a rocket?
Choices:
goes higher
falls down
Answer: A
Background: The more curved the surface of a lens is, the more it refracts the light that passes through it.

Question: Katie wants to get light to turn to rainbow colors by using a lens to filter the light through. In order to get the most colors, Katie will use a lens that is
Choices:
flat
curved
Answer: B
Background: The planets further from the Sun will have bigger orbits, and therefore take longer to revolve around the Sun.

Question: Compared to Neptune, which is the furthest planet to the Sun, would Mercury, which is the closest planet from the Sun have a
Choices:
larger orbit
smaller orbit?
Answer: B
Background: An object with greater mass or greater velocity has more kinetic energy.

Question: An object with little kinetic energy is probably
Choices:
small
large
Answer: A
Background: An increase in predators, the emergence of a new disease, or the loss of habitat are just three possible problems that will decrease a population.

Question: What happens to the size of a population if the number of predators for that population is decreased?
Choices:
gets bigger
gets smaller
Answer: A
Background: When we add resistors in parallel to each other the total resistance decreases and the current increases.

Question: Dean turns the current up a lot, expecting that the resistance will
Choices:
shrink
grow
Answer: A
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 higher the pressure, the collisions were
Choices:
Higher
Lower
Answer: A
Background: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.

Question: A sound wave that has less frequency will have _____ energy.
Choices:
more
less
Answer: B
Background: The water table is higher when there is a lot of rain and lower when the weather is dry.

Question: When you look at a lake before the rain the water levels are
Choices:
lower
higher
Answer: A
Background: When there are more sunspots the Sun is more active and there are more solar storms and more of the Sun's energy reaches the Earth.

Question: If Bob notices an increase in the amount of solar storms, it would mean there are _____ sunspots.
Choices:
more
less
Answer: A
Background: We also saw that adding resistors to a series circuit increases the total resistance of the circuit, causing the current to decrease.

Question: Mike wants his circuits to be able to have a lower resistance, so that the current increases. In order to do this, he will consider his resistors and
Choices:
increase them
decrease them
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: Which planet does the sun have the most gravity effect on?
Choices:
Mars
Mercury
Answer: B
Background: Developing nations will also increase demands on natural resources as they build more factories.

Question: Rupert is evaluating the impact of factories on the natural resources of developing nations. If Nation X added 100 new factories, it will _____ demands on their natural resources.
Choices:
decrease
increase
Answer: B
Background: The more carbon atoms a hydrocarbon has, the greater the number of isomers.

Question: A hydrocarbon with more carbon atoms will have _____ isomers.
Choices:
fewer
many
Answer: B
Background: As greenhouse gases increase, changes will be more extreme.

Question: Reid notices no change in the weather and temperature from 100 years ago. This likely was caused by _____ greenhouse gas levels.
Choices:
increased
decreased
Answer: B
Background: Older rocks are at the bottom and younger rocks are at the top.

Question: When we dig up rocks the shallower we stay the rocks get
Choices:
older
younger
Answer: B
Background: Natural selection is the process by which living things with beneficial traits produce more offspring, so their traits become more common over time.

Question: Ray analyzed the color of moths for a project. He notices that white moths produce more adult offspring than black ones. The white moth's traits will likely become _____ common over time.
Choices:
less
more
Answer: B
Background: With fewer trees, the air is drier and droughts are more common.

Question: Terry cuts the trees down in the forest. The air is now _____ dry.
Choices:
more
less
Answer: A
Background: Electrons at lower energy levels, which are closer to the nucleus, have less energy.

Question: Mona is measuring electrons and their energy levels for a school science project. Some electrons are closer to the nucleus compared to others. Do closer electrons or electrons that are further away have greater energy?
Choices:
closer
further away
Answer: B
Background: At higher temperatures, particles of reactants have more energy, so they move faster. They are more likely to bump into one another and to collide with greater force.

Question: When something gets very hot does it move
Choices:
slower
faster
Answer: B
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 2 feet apart, what happens to the gravitational pull between the objects?
Choices:
decreases
increases
Answer: B
Background: In the thermosphere, temperatures increase as altitude increases.

Question: If a person should descend from the thermosphere to the ground, would the air temperature
Choices:
increase or
decrease?
Answer: B
Background: The higher the pH value is, the stronger the base.

Question: John was looking at some chemicals in the chemistry lab. He saw that the higher the ph value was, the base became
Choices:
Larger
Smaller
Answer: A
Background: The thinner the wire, the more resistance it offers.

Question: Barry is connecting new wires to his speakers. His new wires are thicker than the old ones, therefore, he should expect that the electrical current will display _____ resistance than his older, thinner ones.
Choices:
more
less
Answer: B
Background: The planets further from the Sun will have bigger orbits, and therefore take longer to revolve around the Sun.

Question: Louis notices that Neptune is farther from the sun than Mercury. Which planet will take a shorter time to rotate around the sun?
Choices:
Mercury
Neptune
Answer: A
Background: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.

Question: DJ has a solution that he adds particles to. The solution is now a _____ concentration.
Choices:
higher
lower
Answer: A
Background: Water becomes more dense when it is colder and when it has more salt.

Question: What happens to water when it absorbs salt?
Choices:
lower density
Higher Density
Answer: B
Background: To reduce friction, oil is added to the engine.

Question: If Milo's engine is running hot, how will draining the oil affect friction?
Choices:
increase
reduce
Answer: A
Background: The faster, longer, and farther the wind blows, the bigger the waves are.

Question: At the beach, Sean noticed that the wind was picking up, and got out of the water to avoid the waves that were
Choices:
bigger
smaller
Answer: A
Background: Exercising muscles increases their size, and bigger muscles have greater strength.

Question: If Jim stop exercising his muscles, would the strength of them
Choices:
increase
decrease
Answer: B
Background: The older a person is, the greater their chance of developing a cardiovascular disease.

Question: Derek's dad was now at a greater risk of getting a cardiovascular disease, even though nothing about his lifestyle or diet changed. The thing that did change is that his dad is now a
Choices:
larger age
smaller age
Answer: A
Background: We also saw that adding resistors to a series circuit increases the total resistance of the circuit, causing the current to decrease.

Question: When you put your finger over the tip of a hose the rate of flow
Choices:
increases
decreases.
Answer: B
Background: Rougher surfaces have more friction between them than smoother surfaces.

Question: If a surface were to be scratched up, it should encounter _____ friction.
Choices:
more
less
Answer: A
Background: The more field lines that are drawn, the stronger the field.

Question: Dana draws a few field lines on the chart. The field she is representing is likely
Choices:
strong
weak
Answer: B
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: When everyone in a country can afford a car do they use more or less energy?
Choices:
more
less
Answer: A
Background: The more carbon atoms a hydrocarbon has, the greater the number of isomers.

Question: If Jim is comparing hydrocarbons and he finds one that has less carbon atoms, the number of isomers that hydrocarbon contains is
Choices:
greater
smaller
Answer: B
Background: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.

Question: Mike is watching how particles of reactants function, and sees that they are very far apart. Considering that the concentration of them is very low, the chance of them colliding together is
Choices:
high
low
Answer: B
Background: The more carbon atoms a hydrocarbon has, the greater the number of isomers.

Question: Compared to a hydrocarbon with 10 carbon atoms, would a hydrocarbon with a single carbon atom have
Choices:
a greater number of isomers
fewer isomers?
Answer: B
Background: As animals grow their bones get longer and bigger, they grow more hair, and are able to take care of themselves by getting food, shelter, and water.

Question: Mona is a puppy. As she grows older and her bones get bigger, what happens to her ability to take care of herself?
Choices:
increases
decreases
Answer: A
Background: So the higher an object is above a surface, the more potential energy it has.

Question: Will drops a ball from 100 feet at the same time that Tony drops a ball from 50 feet. Whose ball has more potential energy?
Choices:
Will's
Tony's
Answer: A
Background: More recently, the death rate has fallen because of the availability of more food and medical advances.

Question: In modern times, there is better medicine. This means there is a _____ death rate.
Choices:
lower
higher
Answer: A
Background: At higher temperatures, particles of reactants have more energy, so they move faster.

Question: The reason that the sun has so much energy is because of it has a
Choices:
high temperature
low temperature
Answer: A
Background: Objects with greater mass have a stronger force of gravity.

Question: If Milo adds mass to an object, what will happen to the force of gravity that object generates?
Choices:
decreases
increases
Answer: B
Background: Wave frequency can be measured by counting the number of crests or compressions that pass the point in 1 second or other time period. The higher the number is, the greater is the frequency of the wave.

Question: If there are less crests coming through, there will be _____ wave frequency.
Choices:
more
less
Answer: B
Background: Objects with greater mass have greater inertia.

Question: Compared to a marble, would the planet Earth have
Choices:
greater inertia
less inertia?
Answer: A
Background: Higher-frequency waves have more energy.

Question: If Mona is generating microwaves while defrosting her meat and she increases the frequency of them, what happens to the amount of energy she is generating?
Choices:
increases
decreases
Answer: A
Background: Anaerobic exercises cause muscles to get bigger and stronger.

Question: Drake goes to the gym every day and works out. The more time that Drake spends exercising, his muscles will be
Choices:
smaller
bigger
Answer: B
Background: Because all electromagnetic waves travel at the same speed through space, a wave with a shorter wavelength must have a higher frequency, and vice versa.

Question: A wave with a shorter wavelength will have a _____ frequency
Choices:
longer
shorter
Answer: A
Background: The pupil automatically gets bigger or smaller to let more or less light in as needed.

Question: Will's pupils grew smaller as the day grew brighter. This happens to let _____ light in.
Choices:
less
more
Answer: A
Background: Lighter, more streamlined vehicles need less energy.

Question: Joe drives a hybrid while Jim drives a large truck. Who uses less energy when driving?
Choices:
Joe
Jim
Answer: A
Background: Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.

Question: Milo was playing around with water by changing the pH level. If he lowered the pH what would happen to the acidity of the solution?
Choices:
it would decrease
it would increase
Answer: B
Background: In the larger container we will still have the same number of gas particles, but now they are filling a much larger space.

Question: Eric adds gas to a 20ml container and Rita adds gas to a 10ml container. Which container holds less gas particles?
Choices:
Rita
Eric
Answer: A
Background: As more resistors are added in parallel, the total current strength increases.

Question: If Milo is making a circuit and he adds more resistors to it, will the strength of the current
Choices:
increase
decrease
Answer: A
Background: The more rope segments on a pully that are helping to do the lifting work, the less force that is needed for the job.

Question: Would it require less strength for a construction worker to move a heavy load of bricks with a pulley that used
Choices:
1 rope segment?
10 rope segments
Answer: B
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 decreases the temperature in her lab, what will happen to the amount of chemical weathering she experiences?
Choices:
increase
decrease
Answer: B
Background: As animals grow their bones get longer and bigger, they grow more hair, and are able to take care of themselves by getting food, shelter, and water.

Question: A kitten and her mother were lying on the floor. Because the kitten was younger and had undergone less growth, as compared to her mother she would have
Choices:
more hair
less hair).
Answer: B
Background: On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body.

Question: Eric went outside in the summer. He is _____ likely to give off heat than if it was winter.
Choices:
more
less
Answer: A
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: When you have air pressures change a lot what happens to the wind?
Choices:
decreases
increases
Answer: B
Background: Electromagnetic waves with shorter wavelengths have higher frequencies and more energy.

Question: Molly was viewing electromagnetic waves and noticed a wave with a wavelength of 20nm and another with 10nm. Which likely has more energy?
Choices:
the 20nm wave
the 10nm wave
Answer: B
Background: A fluid exerts pressure in all directions, but the pressure is greater at greater depth.

Question: Milo loves to dive deep into the ocean. Does he experience more pressure diving at 10 meters or at 100 meters?
Choices:
10 meters
100 meters
Answer: B
Background: Electromagnetic waves with shorter wavelengths have higher frequencies and more energy.

Question: If Mona is manipulating the wavelengths of her microwave, what happens when she makes the wavelengths longer?
Choices:
energy decreases
energy increases
Answer: A
Background: The more efficient a device is, the greater the percentage of usable energy it produces.

Question: A very efficient pair of solar panels will produce
Choices:
little energy
a lot of energy
Answer: B
Background: In general, fossils in older rocks are less similar to modern organisms.

Question: Jimmy found a fossil on the beach. He compared it to a fossil in the museum that was much older. Which fossil resembles modern organisms the least?
Choices:
beach fossil
museum fossil
Answer: B
Background: The rocket goes upwards because the hot gases shoot downwards out of the nozzle. The faster the gases go downwards, the faster the rocket goes upwards.

Question: Boris was tasked with developing a hypersonic rocket. He built two prototypes that were identical except that they have different gas velocities out of the nozzle. Which rocket was likely the fastest?
Choices:
the rocket with highest gas velocity
the rocket with lowest gas velocity
Answer: A
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 half the energy of Star A, so _____ was seen to have the higher temperature.
Choices:
Star A
Star B
Answer: A
Background: The thinner the wire, the more resistance it offers.

Question: Which wire likely has the lowest amount of resistance?
Choices:
a bridge suspension cable
a paper clip
Answer: A
Background: The higher up a food chain that humans eat, the greater the levels of toxic metals they take in.

Question: Sarah ate a salad for dinner, Sarah's levels of toxic metals have
Choices:
decreased.
increased or
Answer: A
Background: A: The more carbon atoms there are, the greater the number of possible arrangements of carbon atoms.

Question: When we have a few blocks we can make
Choices:
many arrangements
few arrangements
Answer: B
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 more energy on a daily basis?
Choices:
Mike
Mosha
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 more folds in the membrane, what happens to the total surface area of that membrane?
Choices:
increases
decreases
Answer: A
Background: As the nail grows, more cells are added at the nail bed.

Question: Gina has longer fingernails than John. Who has less cells on their nails?
Choices:
John
Gina
Answer: A
Background: In refraction of light, the greater the change in speed, the more light bends.

Question: When light travels slower, the light refracting bends
Choices:
more
less.
Answer: B
Background: As the rocks move deeper into the Earth, temperature and pressure increase.

Question: If Milo is exploring underground and he goes deeper into the Earth, does he feel more or less pressure?
Choices:
more
less
Answer: A
Background: Higher-frequency waves have more energy.

Question: Andy is noticing that all of the waves in the area are lower-frequency waves. Andy can then deduce that these waves have energy that is
Choices:
more
less
Answer: B
Background: During inhalation, because the chest volume is larger, the air pressure inside the lungs is lower than the air pressure outside.

Question: A person takes a deep breath and wants to know if the air outside their lungs is stronger than the air outside. The air outside the body, compared to the air in their chest, when they have a large chest, will be
Choices:
higher
lower
Answer: A
Background: Countries with more industry produce more hazardous wastes than those with little industry.

Question: Will lives in England and Tony lives in Ethiopia. Whose country likely produces less hazardous waste?
Choices:
Tony
Will
Answer: A
Background: An increase in predators, the emergence of a new disease, or the loss of habitat are just three possible problems that will decrease a population.

Question: If there are very few wolves the deer population will
Choices:
increase
decrease
Answer: A
Background: When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.

Question: Rich works out every day. Paul does not work out at all. Whose heart expels less blood per contraction, resulting in lower BPM?
Choices:
Rich
Paul
Answer: B
Background: In the thermosphere, temperatures increase as altitude increases.

Question: If a person should ascend into the thermosphere from the ground, would the air temperature
Choices:
increase or
decrease?
Answer: A
Background: The elastic force increases the more the material is stretched or compressed.

Question: John was looking at the materials being manipulated. He saw that the more it was compressed the force
Choices:
Increased
Decreased
Answer: B
Background: Bases have pH values above 7. The higher the pH value, the more strongly basic the substance.

Question: Christy is in lab measuring the pH values of some substances. The first substance she measures has a pH value of 9. The second substance has a pH value of 8. Compared to the first, the second substance can be said to be _____ basic.
Choices:
less.
more
Answer: A
Background: Pigments in the skin act like a filter that can prevent the skin from making vitamin D. As a result, people with darker skin need more time in the sun than people with lighter skin to make the same amount of vitamin D.

Question: Two friends are headed to the beach, Mike and John. Mike is white, and John is black. Both want to make the same amount of vitamin D through sun exposure. The person who will take longer to make the amount of vitamin D is
Choices:
Mike
John
Answer: B
Background: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.

Question: Would a diesel powered submarine release more pollution if it were running on
Choices:
its diesel engine
its battery backup power?
Answer: A
Background: Compared with a less powerful device, a more powerful device can either do more work in the same time or do the same work in less time.

Question: When you use a 1 horsepower drill instead of a 2 horsepower drill it is
Choices:
more powerful
less powerful
Answer: B
Background: The upper rock layers are much younger.

Question: Sarah is looking at layers of rock on a cliff face. She can see that the rock at the very top of the cliff are
Choices:
older
younger
Answer: B
Background: Bigger waves have more energy.

Question: Bigger waves have _____ energy than smaller ones.
Choices:
more
less
Answer: A
Background: The more charged the objects are, the stronger the electrostatic force between them.

Question: If an object loses its charge, it will _____ electrostatic force.
Choices:
lose
gain
Answer: A
Background: If blood volume in the body decreases, blood pressure decreases.

Question: When there is less fluid in a tube the pressure in the tube
Choices:
increases
decreases
Answer: B
Background: The closer to pH 14, the more strongly basic the solution.

Question: Evan was drinking water with pH 7. He also had bleach in his house of pH 12. Which liquid is more basic?
Choices:
water
bleach
Answer: B
Background: Bigger waves have more energy.

Question: Small waves have _____ energy than bigger ones.
Choices:
more
less
Answer: B
Background: A thinner wire is more difficult for electrons to move through than a thicker wire.

Question: Eric has a 4in diameter cable. Rita has a 1in diameter cable. Electrons would likely move slower through
Choices:
Eric's cable
Rita's cable
Answer: B
Background: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.

Question: A sound wave that has more frequency will have _____ energy.
Choices:
more
less
Answer: A
Background: The temperature of matter increases with the added energy.

Question: If Mona increases the temperature of her stove while cooking a roast, what happens to the amount of energy being used?
Choices:
increases
decreases
Answer: B
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 first?
Choices:
bar
chips
Answer: B
Background: The more rope segments on a pully that are helping to do the lifting work, the less force that is needed for the job.

Question: Bob decreased the rope segments on his pully; this means he will need to use _____ force on it.
Choices:
more
less
Answer: A
Background: Greater use of oil and other fossil fuels causes more pollution.

Question: When we add more cars to the road the pollution levels
Choices:
decrease
increase
Answer: B
Background: The temperature of matter increases with the added energy.

Question: If Mona is heating up a pan on the stove to cook dinner with and she increases the amount of energy coming out of the stove, what will happen to the pan on the stove?
Choices:
gets hotter
gets cooler
Answer: A
Background: Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature.

Question: John was playing with alkanes in his lab. If he decreased the amount of carbon atoms in an alkane, what would happen to the boiling point of that alkane?
Choices:
decrease?
increase
Answer: A
Background: Because richer nations use more fossil fuels, they also cause more air pollution and global warming than poorer nations do.

Question: Mona lives in a nation that uses a lot of fossil fuels. What would happen to her countries levels of air pollution if they were to decrease their usage?
Choices:
increase
decrease
Answer: B
Background: With less ozone in the stratosphere, more UV rays reach the ground.

Question: As ozone is added to the stratosphere, we can expect to have _____ UV rays on the ground.
Choices:
more
less
Answer: B
Background: By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.

Question: A rocket would only be able to fly low if its mass were
Choices:
higher
lower
Answer: A
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 no pressure from the hurricane, as the winds got _____.
Choices:
stronger
weaker
Answer: B
Background: The more the baby suckles, the more prolactin is released, which causes more milk to be produced.

Question: As Carla's baby drank breast milk less vigorously, the milk that was made was
Choices:
more
less
Answer: B
Background: Increasing the number of resistors in a series circuit increases the overall resistance of the circuit.

Question: If Milo is building a new circuit and he decreases the number of resistors in a series on that circuit, what happens to the overall resistance of the circuit?
Choices:
increases
decreases
Answer: B
Background: The more the baby suckles, the more prolactin is released, which causes more milk to be produced.

Question: Will is one year old and breastfeeds from his mother. He suckles less and less. The mother produces _____ milk in response.
Choices:
more
less
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 less windy day would we expect to have
Choices:
larger waves
smaller waves
Answer: B
Background: As blood glucose levels decrease, less insulin is produced.

Question: If Milo stops eating for awhile and his blood glucose decreases, what happens to the amount of insulin he is producing?
Choices:
increases
decreases
Answer: B
Background: If the gas is heated, the particles will move faster as they gain more energy.

Question: Jim is performing experiments in his lab. If he applies more heat to gas inside of a beaker, what happens to the gas particles?
Choices:
move faster
move slower
Answer: A
Background: The more rope segments on a pully that are helping to do the lifting work, the less force that is needed for the job.

Question: If Jim increases the number of segments on a rope he is using as a pully, the amount of force that he needs to apply when lifting something with the rope
Choices:
increases
decreases
Answer: B
Background: The planets further from the Sun will have bigger orbits, and therefore take longer to revolve around the Sun.

Question: Louis notices that Neptune is farther from the sun than Mercury. Which planet will take longer to rotate around the sun?
Choices:
Mercury
Neptune
Answer: B
Background: As you increase the number of carbon atoms in a hydrocarbon, the number of isomers quickly increases.

Question: Dean wants to get a larger number of isomers to observe, so in order to do so quickly, he takes the number of carbon atoms in a hydrocarbon, and makes them
Choices:
decrease
increase
Answer: B
Background: A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.

Question: Polly gets her planet to increase greenhouse gas levels. The global temperature as a result likely
Choices:
increases
decreases
Answer: A
Background: We need to reduce our electricity consumption in order to reduce pollution.

Question: A rapid decrease in electricity consumption could mean _____ pollution.
Choices:
less
more
Answer: A
Background: Less photosynthesis means that plants and phytoplankton produce less food.

Question: Ollie moved a tomato plant to an area that receives less sunlight. The tomato plant will now produce _____ food.
Choices:
more
less
Answer: B
Background: Aerobic exercise increases the size and strength of muscles in the heart and helps all your muscles develop greater endurance.

Question: Sasha exercises her muscles with weights daily, while Tanya does not exercise ever. Who likely has weaker muscles?
Choices:
Sasha
Tanya
Answer: B
Background: In refraction of light, the greater the change in speed, the more light bends.

Question: Ron was playing with a flashlight. He moved it back and forth slowly, and then quickly. Which motion likely caused more light to bend?
Choices:
the slow motion
the quick motion
Answer: B
Background: The louder the sounds are, the less exposure is needed to cause hearing loss.

Question: Jim works as a stage manager for a rock band and is up close to their speakers at each concert, while Todd attends the concerts and watches from dozens of rows back. Who will experience hearing loss more quickly?
Choices:
Jim
Todd
Answer: A
Background: The more efficient a device is, the greater the percentage of usable energy it produces.

Question: When a device become more efficient, its production of usable energy will go
Choices:
up
down
Answer: A
Background: When particles move more quickly, temperature is higher and an object feels warmer.

Question: When we move around a lot do we feel
Choices:
warmer
colder
Answer: A
Background: The more current, the stronger the electromagnet.

Question: Milo is playing with his electromagnet and he decides to decrease the current supplied to it. What will happen to the strength of the electromagnet?
Choices:
increase
decrease
Answer: B
Background: Because all electromagnetic waves travel at the same speed through space, a wave with a shorter wavelength must have a higher frequency, and vice versa.

Question: If Jim is projecting electromagnetic waves out into space and he increases the size of the wavelength being transmitted, what happens to the frequency of that wavelength?
Choices:
decreases
increases
Answer: A
Background: We need to reduce our electricity consumption in order to reduce pollution.

Question: Suppose Jim was decided to use more electricity in his day to day activities. What would happen to his pollution output?
Choices:
reduced
increased
Answer: B
Background: The size of an ocean wave depends on how fast, over how great a distance, and how long the wind blows. The greater each of these factors is, the bigger a wave will be.

Question: Phil surfed small 1.5 foot waves on the beach. _____ wind speeds likely contributed to such small waves
Choices:
high
low
Answer: B
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 apples are barely acidic so they have a pH value that is
Choices:
higher
lower
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: When nobody in a country can afford a car do they use more or less energy?
Choices:
more
less
Answer: B
Background: In bigger atoms, valence electrons are farther from the nucleus.

Question: If valence electrons are far from an atom's nucleus, the atom is likely
Choices:
bigger
smaller
Answer: A
Background: An increase in predators, the emergence of a new disease, or the loss of habitat are just three possible problems that will decrease a population.

Question: What happens to the size of a population if the number of predators for that population is increased?
Choices:
gets bigger
gets smaller
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: The elephants were moved to a reservation where they could thrive, since their habitat in the wild had expanded too far. The elephant numbers were now
Choices:
larger
smaller
Answer: A
Background: The pupil automatically gets bigger or smaller to let more or less light in as needed.

Question: Sandra is walking down a sunny street and then suddenly goes into a dark building. Sarah's pupils will do this in response to the new low light
Choices:
shrink
grow
Answer: B
Background: The greater the objects mass, the greater the force of attraction; in addition, the greater the distance between objects, the smaller the force of attraction.

Question: Dave dropped a feather and a ball out of a window. The ball landed first because it had mass that, compared to the feather, was
Choices:
greater
lesser
Answer: A
Background: More people also means more clearing of land for agriculture and development.

Question: If Mona wants to clear her farm land at a faster rate, what would adding people do to that rate?
Choices:
increase it
decrease it
Answer: A
Background: Breast cancer is rare in teens. It becomes more common as women get older.

Question: Dana goes with her mother to get screened for breast cancer. The person who is less likely to have it has an age that is
Choices:
higher
lower
Answer: B
Background: Muscles that are exercised are bigger and stronger than muscles that are not exercised.

Question: Jimbo liked to work out a lot, while James never worked out. Which person would have stronger muscles?
Choices:
Jimbo
James
Answer: A
Background: More water allows more chemical reactions.

Question: When we add more water to something there will be
Choices:
fewer reactions
more reactions
Answer: B
Background: As you increase the number of carbon atoms in a hydrocarbon, the number of isomers quickly increases.

Question: A doubling of carbon atoms in a hydrocarbon will cause _____ isomers.
Choices:
more
less
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: If Mona is building a structure and she wants to make it more functional, what would decreasing the surface area of that structure do?
Choices:
increase functioning
decrease functioning
Answer: B
Background: Therefore, water nearer shore usually contains more dissolved nutrients than water farther from shore.

Question: Water near shore will have _____ dissolved nutrients than water further away shore.
Choices:
more
less
Answer: A
Background: The smaller a population is, the more allele frequencies may drift.

Question: Would you expect to see greater allele shift in a population of roses grown in a greenhouse if the greenhouse had
Choices:
20 rose plants
2,000 rose plants?
Answer: A
Background: In erosion, a slower moving stream will only carry smaller particles.

Question: If the speed of a stream decreases, the size of the particles carried in that stream
Choices:
increase
decrease
Answer: B
Background: Larger telescopes can collect more light.

Question: Ian wants to be able to see the most light coming from the stars at night, so the telescope that he will use will be
Choices:
larger
smaller
Answer: A
Background: For bases we can state the folllowing: The higher the pH of a substance, the more basic it is.

Question: If a substance is tested and has low a pH of 1 we could say that the substance is
Choices:
acidic
basic
Answer: A
Background: The more mass a moving object has or the faster its moving, the greater its momentum.

Question: Between a marble and a cannon ball, both travelling at the same speed, the object with the greater momentum would be
Choices:
the cannon ball
the marble?
Answer: A
Background: The higher the crests of a wave are, the greater the amplitude.

Question: The waves in the ocean are tall meaning they have a _____ amplitude.
Choices:
high
low
Answer: A
Background: Bacteria with a mutation the helps resist antibiotics increase in numbers, so the mutation becomes more common.

Question: If there are more bacteria with the right mutation, will the occurrence of the mutation become
Choices:
more
less
Answer: A
Background: The more branching there is in isomers, the lower the boiling and melting points are.

Question: Eric added branching isomers to one solution, and left the other solution alone. The isomer solution now has a _____ boiling point.
Choices:
lower
higher
Answer: A