allenai/quartz huggingface dataset:
Background: In exponential growth as the population size increases, the growth rate also increases.

Question: Milo lives in a small city, but the city has recently become more popular with young people. If more young people begin moving the city, what happens to the growth rate of the city?
Choices:
increases
decreases
Answer: A
Background: The larger a telescope's mirror or lens, the better it is at seeing narrowly separated objects as individual objects and the sharper the images look.

Question: When are using a telescope we know that the smaller the mirror is means that there is a
Choices:
greater resolution
lower resolution
Answer: B
Background: Therefore, if the threads on a screw are closer together, you need to apply less force to penetrate the wood or other object.

Question: Will has two screws of the same length. One has 20 threads; the other has 200 threads. The screw with _____ threads likely needs more force to penetrate wood.
Choices:
20
200
Answer: A
Background: The mass of the particles: lighter particles will diffuse faster, because on average they move faster.

Question: If something is very light and it is blown by the wind what happens?
Choices:
diffuses
stays put
Answer: A
Background: The sooner cancer is detected the easier it is to treat.

Question: When we are able to catch illness early we are able to cure it
Choices:
easier
harder
Answer: A
Background: In the troposphere, temperatures decrease as altitude increases.

Question: When Mike went hiking, he saw that the weather got colder when he was on the mountain going
Choices:
higher
lower
Answer: A
Background: As photosynthesis increases, the amount of stored glucose in the guard cells increases.

Question: Leo notices a large amount of stored glucose in his cell. Ray notices zero stored glucose in his cell. Whose cell likely underwent more photosynthesis?
Choices:
Leo
Ray
Answer: A
Background: A stronger base produces more hydroxide ions than a weaker base.

Question: If Milo is mixing chemicals together into a solution and he increases the strength of the base, what happens to the amount of hydroxide ions?
Choices:
increases
decreases
Answer: A
Background: In a parallel circuit, the resistance decreases as more resistors are added in parallel.

Question: Sean is working on a parallel circuit, and he wants the resistance to be low. In order to achieve this, Sean will, with the resistors
Choices:
increase them
decrease them
Answer: A
Background: For example, on a cold day, an endotherm may produce more body heat by increasing its rate of metabolism.

Question: We sweat when it is warm because it allows us to produce
Choices:
more heat
less heat
Answer: B
Background: This means the rate of diffusion is much slower in liquids than in gases, because the particles of a gas are further apart and collide much less.

Question: If a gas' particles were to become much farther apart, the rate of diffusion would go
Choices:
faster
slower
Answer: A
Background: More people need more resources.

Question: When there are a lot of people in one area they need
Choices:
many resources
low resources
Answer: A
Background: For example, on a cold day, an endotherm may produce more body heat by increasing its rate of metabolism.

Question: Terry sees a hot day outside. He is _____ likely to produce body heat on this day.
Choices:
more
less
Answer: B
Background: The lower the pH value is, the greater is the concentration of hydrogen ions and the stronger the acid.

Question: If something has a pH value of 1 it would be
Choices:
acidic
basic
Answer: A
Background: When a gas is squeezed into a smaller volume, the particles have less space to move.

Question: Will pumped 10 grams of gas into a 10 gallon container. Riley pumped 10 grams of gas into a 200 gallon container. In whose container will the gas have more space to move?
Choices:
Will's
Riley's
Answer: B
Background: Therefore, if the threads on a screw are closer together, you need to apply less force to penetrate the wood or other object.

Question: If Mona is putting together a new crib and she wants to have a harder time screwing the pieces together, what should she look for in a screw?
Choices:
closer threads
farther threads
Answer: B
Background: The higher the temperature of the liquid, the faster it will evaporate.

Question: If Jim is heating water in a beaker and he increases the temperature, what will happen to the rate of evaporation?
Choices:
it will decrease
it will increase
Answer: B
Background: Friction is greater when objects have rougher surfaces or are heavier so they press together with greater force.

Question: Karen is studying friction in school. She wonders, of her two twin friends Sara and Samantha, which is causing more friction with the floor. They have on different shoes. Sara is wearing smooth soled tap shoes, while Samantha is wearing much rougher soled work boots. Assuming their weight is the same and all other factors are constant, _____ is creating more friction with the ground.
Choices:
Sara
Samantha
Answer: B
Background: Waves with greater amplitudes or shorter wavelengths have more energy.

Question: What are the energy levels that are in a very tall wave?
Choices:
high
low
Answer: A
Background: Heavier objects press together with greater force, and this causes greater friction between them.

Question: Mike weighs 90 pounds and Tom weighs 200 pounds. Who likely experiences less friction on the Earth?
Choices:
Mike
Tom
Answer: A
Background: When the concentration of reactants is higher, the reaction rate is faster.

Question: Carmen is in class mixing solutions of reactants. The first solution has a very high concentration of reactants, while the second solutions concentration of reactants is lower. The reaction rate will be higher in the
Choices:
first solution
second solution
Answer: A
Background: The higher the frequency is, the more energy a photon has.

Question: Will had a high frequency photon he was examining. He compared it to Tina's low frequency photon. The photon with less energy was
Choices:
Will's
Tina's
Answer: B
Background: What this means is that at higher magnification, we are able to see objects of smaller and smaller size within our field of view.

Question: If Mona is looking at objects in her microscope and she decreases the magnification, what happens to her ability to see small objects through it?
Choices:
decreases
increases
Answer: A
Background: The higher the frequency is, the more energy a photon has.

Question: A light with a very short wavelength has
Choices:
high energy
low energy
Answer: A
Background: When particles move more slowly, temperature is lower and an object feels cooler.

Question: If Mona is heating up popcorn in the microwave and the popcorn begins to move slower, what happens to the temperature of the kernels?
Choices:
increase
decrease
Answer: B
Background: As the total resistance increases, the current strength decreases.

Question: Larry needs to reduce the current strength of the electricity running through his plant. He should _____ the total resistance of the electromagnetism.
Choices:
increase
decrease
Answer: A
Background: Convection on early Earth was faster and so plate tectonics was faster.

Question: If Earth's plate tectonics slowed down, Earth's convection would
Choices:
increase
decrease
Answer: B
Background: But, in stars, the bluer the star, the hotter it is, and the redder it is, the older and colder it is.

Question: Dave is looking at stars in the sky, and he sees that while most are redder, that there is a large blue one. Dan knows that the red stars, compared to the blue one, is
Choices:
hotter
colder
Answer: B
Background: As photosynthesis increases, the amount of stored glucose in the guard cells increases.

Question: When plants have a lot of sun they make
Choices:
more glucose
less glucose
Answer: A
Background: In exponential growth as the population size increases, the growth rate also increases.

Question: Smaller dogs have a slower growth rate than big dogs so that means they get:
Choices:
Smaller
Larger
Answer: A
Background: The farther the material is stretched or compressed, the greater the elastic force becomes.

Question: A rubber band, when it is fully stretched, will _____ elastic force.
Choices:
gain
lose
Answer: A
Background: Hard shells fossilize more readily than soft bodied organisms, as they are better at resisting decay, take significantly longer to break down, and have a greater chance of surviving burial under layers of sediment.

Question: If Mona is comparing two organisms and she notices that one has a very hard shell and one has a very soft shell, which one will turn into a fossil less easier?
Choices:
soft shell
hard shell
Answer: A
Background: Older layers are deeper in the Earth, younger layers are closer to the surface.

Question: Johnny was looking at the layers of rock at the bottom of the canyon. He observed that the older layers are
Choices:
Farther
Closer
Answer: A
Background: The Southern Hemisphere has less trash buildup in the oceans because less of the region is continent.

Question: Will moved from Los Angeles to Sydney. In which city's hemisphere is there more ocean trash?
Choices:
Los Angeles
Sydney
Answer: A
Background: The advantage to biofuels is that they burn more cleanly than fossil fuels. As a result, they create less pollution and less carbon dioxide.

Question: Ollie drives a car that uses biofuels. It creates less pollution and therefore,
Choices:
more carbon dioxide.
less carbon dioxide
Answer: B
Background: Older layers are deeper in the Earth, younger layers are closer to the surface.

Question: Rich has a rock from 1000 feet below the crust of the Earth, and he compares it to a rock on his driveway. Which rock is likely older?
Choices:
the 1000 foot rock
the driveway rock
Answer: A
Background: When a gas is squeezed into a smaller volume, the particles have less space to move.

Question: Carlos transferred his gas to a large tube, and he knows that as the particles try to move, there will be movement that is
Choices:
greater
smaller
Answer: A
Background: Lower pH numbers are more acidic and higher numbers are less acidic (also called more alkaline).

Question: After pouring a bottle of acidic lemon juice into a glass of water, should the solution have
Choices:
lower pH
higher pH?
Answer: A
Background: Waves with greater amplitudes or shorter wavelengths have more energy.

Question: If Jimbo notices that the amplitude of a wave has increased, what can he say about the energy contained within that wave?
Choices:
it has increased
it has decreased
Answer: A
Background: Certain respiratory conditions can be made worse in people who live closer to or in large cites.

Question: Shane spent his live in the country and had no respiratory conditions, then moved to the city and had several develop. Shane's conditions are likely due to being
Choices:
far from a city
close to a city
Answer: B
Background: Older layers are deeper in the Earth, younger layers are closer to the surface.

Question: Jean is looking at a rock face that shows the layers of the Earth. Jean notes that the rocks towards the bottom of the exposed cliff have an age that is
Choices:
greater
lesser
Answer: A
Background: Friction causes the molecules on rubbing surfaces to move faster, so they have more energy. This gives them a higher temperature, and they feel warmer.

Question: Eric rubbed a blanket on his arm. His arm gets warmer because the molecules inside get
Choices:
faster
slower
Answer: A
Background: An increase in glaciers lowers sea level and a decrease in glaciers raises sea level.

Question: In a village in Alaska they have watched the glaciers grow larger which changes the sea level and makes it
Choices:
fall
raise.
Answer: A
Background: Even though the Sun is much larger than the Moon, the pull of the Suns gravity is much less because the Sun is much farther away.

Question: Jeff pilots his spaceship closer to the Sun. The ship experiences _____ gravitational force.
Choices:
more
less
Answer: A
Background: The will travel faster and farther if the batter hits it with more force.

Question: Something that travels slower has more or less force
Choices:
more
less
Answer: B
Background: The sooner cancer is detected the easier it is to treat.

Question: When we are able to catch illness late we are able to cure it
Choices:
easier
harder
Answer: B
Background: Heavier objects also have more friction because they press together with greater force.

Question: Tina lost weight over the year. Her amount of friction with the ground
Choices:
decreases
increases
Answer: A
Background: As photosynthesis increases, the amount of stored glucose in the guard cells increases.

Question: Leo notices a large amount of stored glucose in his cell. Ray notices zero stored glucose in his cell. Whose cell likely underwent less photosynthesis?
Choices:
Leo
Ray
Answer: B
Background: The higher the temperature of the liquid, the faster it will evaporate.

Question: A puddle in the Sahara desert where the thermometer read 106 F was the same size as a puddle in Montana where the thermometer read 44 F. The puddle in Montana will evaporate _____ than the puddle in the Sahara desert.
Choices:
more slowly
more quickly
Answer: A
Background: Therefore, an object with more mass has greater thermal energy than an object with less mass, even if their individual atoms are moving at the same speed.

Question: A bear and a fox are trying to get a piece of meat to stay frozen the longest by insulating the meat by using the heat from their bodies. Because of how thermal energy is spread, the animal who will keep the meat frozen longer is the
Choices:
bear
fox
Answer: B
Background: As more protons are added to the nucleus, the electromagnetic force of repulsion between them gets stronger, while the strong nuclear force of attraction between them gets weaker.

Question: If a nucleus has few protons, it will also have a _____ nuclear force of attraction.
Choices:
weaker
strong
Answer: B
Background: The greater the wasted output energy, the less efficient the system.

Question: If Jim increases the amount of energy that his HVAC system wastes, what happens to the efficiency of the system?
Choices:
increases
decreases
Answer: B
Background: The advantage to biofuels is that they burn more cleanly than fossil fuels. As a result, they create less pollution and less carbon dioxide.

Question: Dean switched to using biofuel for his business because their clean burning creates _____ pollution and carbon dioxide.
Choices:
more
less
Answer: B
Background: The sooner cancer is detected the easier it is to treat.

Question: Carl has testing done to see if he has cancer, and it is caught in the very late stages. The difficulty in treating the cancer will therefore be
Choices:
easier
harder
Answer: B
Background: The faster or larger a moving object is, the greater is the fluid friction resisting its motion.

Question: Alan is riding a bike. As he goes slower, the fluid friction resisting his motion
Choices:
increases
decreases
Answer: B
Background: The more focused the Suns rays are, the more energy an area receives and the warmer it is.

Question: If Mona is standing in the shade of a tree and she moves out into the sun, what happens to the amount of sunlight her body receives?
Choices:
increases
decreases
Answer: A
Background: This causes the delivery of less oxygen to the cells, and this stimulates the heart rate via adrenalin, so that pulse rate increases in an effort to deliver enough oxygen to cells.

Question: John was viewing a patient's vital signs at the hospital. He could see clearly that the less oxygen to the cells, the pulse rate would become
Choices:
Higher
Lower
Answer: A
Background: The mass of the particles: lighter particles will diffuse faster, because on average they move faster.

Question: In diffusion, the lighter particles move
Choices:
faster
slower
Answer: A
Background: This is because the lower blood volume in the vessels exerts less pressure on the vessel walls.

Question: john was taking the patients blood pressure and other vital signs. He saw that the higher the blood volume, the pressure was
Choices:
Greater
Less
Answer: A
Background: The carbon taxes encourage people to use less fossil fuel, which reduces carbon dioxide emissions.

Question: Jan wants to damage the Earth, so she starts driving to work instead of biking. Because Jan is using more fossil fuels, she is contributing carbon dioxide emissions in amounts that are
Choices:
greater
smaller
Answer: A
Background: The higher the frequency is, the more energy a photon has.

Question: Will had a high frequency photon he was examining. He compared it to Tina's low frequency photon. The photon with more energy was
Choices:
Will's
Tina's
Answer: A
Background: The lower the pH value is, the greater is the concentration of hydrogen ions and the stronger the acid.

Question: A chemist compared two substances in the lab. Which substance will have a lower concentration of hydrogen ions?
Choices:
the substance with the higher pH
the substance with the lower pH
Answer: A
Background: The deeper you go, the darker the water gets.

Question: Mary loves to dive in the ocean. What will happen to the water if she swims up to the shallow portion?
Choices:
darker
lighter
Answer: B
Background: Friction causes the molecules on rubbing surfaces to move faster, so they have more energy. This gives them a higher temperature, and they feel warmer.

Question: Two hands are rubbing together fast, two other hands rub slowly, so the slower hands will make heat in amounts that are
Choices:
larger
smaller
Answer: B
Background: Anything that is moving has kinetic energy, and the faster it is moving, the more kinetic energy it has.

Question: John watched the particles interacting in the laboratory. He observed that the faster an object is moving, means that the kinetic energy is
Choices:
Higher
Lower
Answer: A
Background: Less energy is also needed to remove electrons from larger atoms in the same group of the periodic table.

Question: If Mona is trying to remove electrons from atoms will she have to use less energy on a large or a small atom?
Choices:
large atom
small atom
Answer: A
Background: Even though the Sun is much larger than the Moon, the pull of the Suns gravity is much less because the Sun is much farther away.

Question: If the Sun were closer to the Earth than the Moon, which body's gravity would have more influence on Earth?
Choices:
Moon
Sun
Answer: B
Background: Waves with greater amplitudes or shorter wavelengths have more energy.

Question: john was testing the meter and noticed that waves with lower amplitudes or longer wavelengths have an energy level that is
Choices:
More
Less
Answer: B
Background: If the current passing through the circuit breaker increases, the electromagnet becomes stronger.

Question: An electromagnet becoming stronger indicates _____ current passing through a circuit breaker.
Choices:
more
less
Answer: A
Background: This is because the lower blood volume in the vessels exerts less pressure on the vessel walls.

Question: If Mona's body experiences less volume of blood in her blood vessels, what is happening to the pressure in her vessel walls?
Choices:
increasing
decreasing
Answer: B
Background: The more focused the Suns rays are, the more energy an area receives and the warmer it is.

Question: When the sun is shining down unobstructed, compared to on a cloudy day, the heat levels are
Choices:
higher
lower
Answer: A
Background: Drier climates generally have less water for people to use.

Question: Jimbo notices over time that his climate has become drier. This means the amount of water available to him is probably
Choices:
increasing
decreasing
Answer: B
Background: This causes the delivery of less oxygen to the cells, and this stimulates the heart rate via adrenalin, so that pulse rate increases in an effort to deliver enough oxygen to cells.

Question: Sandra was scared and her adrenal glands secreted less adrenaline after her fight or flight response, which caused her heart rate to
Choices:
decrease?
increase
Answer: A
Background: What this means is that at higher magnification, we are able to see objects of smaller and smaller size within our field of view.

Question: Mick wants to see some very small ants clearly. Mick will choose a magnifying glass that has a magnification that is
Choices:
lower
higher
Answer: B
Background: Surface Area of Reactants When a solid substance is involved in a chemical reaction, only the matter at the surface of the solid is exposed to other reactants. If a solid has more surface area, more of it is exposed and able to react.

Question: Ares has a rock of with a surface area of 10 meters squared and a rock with a surface area of 1 meter squared. The _____ rock likely has more area affected by a chemical reaction
Choices:
10m
1m
Answer: A
Background: Certain respiratory conditions can be made worse in people who live closer to or in large cites.

Question: When people live in less polluted areas they will have
Choices:
more disease
less disease.
Answer: B
Background: In a Mercator projection, because Greenland is closer to the pole, the continents shape and size are greatly increased.

Question: The way that Mercator makes a map the countries closest to the poles appear
Choices:
larger
smaller
Answer: A
Background: The greater the wasted output energy, the less efficient the system.

Question: Terry's system wastes 50% of its energy, while Rick's system wastes 75%. The less efficient system is
Choices:
Terry's
Rick's
Answer: B
Background: The sooner cancer is detected the easier it is to treat.

Question: Carl has testing done to see if he has cancer, and it is caught in the very early stages. The difficulty in treating the cancer will therefore be
Choices:
easier
harder
Answer: A
Background: Increasing the number of resistors connected in parallel decreases the overall resistance of the circuit.

Question: If Milo is creating a circuit and he decreases the amount of parallel resistors he uses to make it, would the overall resistance of the circuit
Choices:
increase
decrease
Answer: A
Background: Pressure: Pressure increases with depth, but increased pressure raises the melting temperature, so melting of rock is less likely to occur at higher pressures.

Question: Will scuba-dived shallower and decreases into the trench. The water pressure around him
Choices:
increases
decreases
Answer: B
Background: Electrons at higher energy levels, which are farther from the nucleus, have more energy.

Question: Joan is examining an electron 100nm from the nucleus and an electron 50nm from the nucleus. Which has less energy?
Choices:
the 50nm electron
the 100nm electron
Answer: A
Background: The greater the net force acting on the object, the greater its acceleration will be, but the mass of the object also affects its acceleration.

Question: Milton approaches a red soccer ball and kicks it as hard as he can, then he approaches a blue soccer ball and it kicks it very softly. Which soccer ball will experience greater acceleration?
Choices:
blue soccer ball
red soccer ball
Answer: B
Background: The sooner cancer is detected the easier it is to treat.

Question: John went to the doctor one day and was told they caught his cancer really early. What does this mean about the ease with which the cancer is treated?
Choices:
harder to treat
easier to treat
Answer: B
Background: This is because the gravitational force of attraction between the Earth and Sun is stronger when the Earth is closer to the Sun.

Question: The Earth's gravitation for is stronger when _____ the sun.
Choices:
closer to
further from
Answer: A
Background: Using less nonrenewable resources means that they will last longer.

Question: If we double our use of nonrenewable resources, we will end up having _____ of them.
Choices:
less
more
Answer: A
Background: The higher the frequency of an electromagnetic wave, the greater its energy.

Question: Theresa created an electromagnetic wave with frequency 10000 megahertz. Eric created a frequency of 20000 megahertz. Whose frequency has less energy?
Choices:
Theresa
Eric
Answer: A
Background: The lower the pH value is, the greater is the concentration of hydrogen ions and the stronger the acid.

Question: If Mona is adding chemicals to her swimming pool and she lowers the pH value of the water, what happens to the acidity of the water in the pool?
Choices:
increase
decrease
Answer: B
Background: With better food and less chance of disease, the death rate fell.

Question: When no one can eat what happens to the number of people that die?
Choices:
increases
decreases
Answer: A
Background: Therefore, if the threads on a screw are closer together, you need to apply less force to penetrate the wood or other object.

Question: Jack wants to screw a board to the wall, and would like to use minimal force, so the screws that Jack uses have threads that are
Choices:
spaced out
closer
Answer: B
Background: The higher the temperature of the liquid, the faster it will evaporate.

Question: As water boils in a kitchen it evaporates
Choices:
less
more
Answer: B
Background: Pressure: Pressure increases with depth, but increased pressure raises the melting temperature, so melting of rock is less likely to occur at higher pressures.

Question: Derek is diving into the ocean. The pressure at the surface will be light, and the pressure the shallower he goes will be
Choices:
stronger
weaker
Answer: B
Background: As photosynthesis increases, the amount of stored glucose in the guard cells increases.

Question: Plants engage in less photosynthesis when there is less sunlight. Because of this, there is _____ produced.
Choices:
less glucose
more glucose
Answer: A
Background: But, in stars, the bluer the star, the hotter it is, and the redder it is, the older and colder it is.

Question: Dave is looking at stars in the sky, and he sees that while most are redder, that there is a large blue one. Dan knows that the blue star, compared to the red ones, is
Choices:
hotter
colder
Answer: A
Background: Older layers are deeper in the Earth, younger layers are closer to the surface.

Question: The deeper that we dig under ground to find fossils the _____ they will be
Choices:
newer
older
Answer: B
Background: As blood volume in the body increases, blood pressure increases.

Question: If an elephant has less blood in its body then a wren, which animal has higher blood pressure?
Choices:
wren
elephant
Answer: A
Background: The farther the material is stretched or compressed, the greater the elastic force becomes.

Question: John was playing with the rubber band in the science lab when he noticed something. The more the band was stretched, the elastic force became
Choices:
Higher
Lower
Answer: A
Background: This is because the gravitational force of attraction between the Earth and Sun is stronger when the Earth is closer to the Sun.

Question: If the Earth's orbit moves farther away from the Sun, what happens to the gravitational force between the two planets?
Choices:
it increases
it decreases
Answer: B
Background: Older layers are deeper in the Earth, younger layers are closer to the surface.

Question: If Jim delves deep into the Earth and takes a sample then compares it to a sample he took close to the surface, which sample will be older?
Choices:
deep sample
shallow sample
Answer: A
Background: As blood volume in the body increases, blood pressure increases.

Question: When Katie was in the hospital with low blood pressure, she understood that the volume of her blood was
Choices:
high
low
Answer: B
Background: Increasing the diameter of the blood vessels increases the amount of blood and heat that moves near the skins surface.

Question: If Milo notices that his skin is becoming cold, what is happening to the diameter of his blood vessels?
Choices:
increasing
decreasing
Answer: B
Background: Convection on early Earth was faster and so plate tectonics was faster.

Question: Slowing plate tectonics indicates convection is
Choices:
increasing
decreasing
Answer: B
Background: The will travel faster and farther if the batter hits it with more force.

Question: Jim hits baseball number one with a small amount of force and baseball number two with a large amount of force. Which object will travel a shorter distance?
Choices:
baseball one
baseball two
Answer: A
Background: Friction is greater when objects have rougher surfaces or are heavier so they press together with greater force.

Question: Keith is showering, and is washing himself using a bar of soap, and then again with a loofah. Keith's skin will get better exfoliation, due to the greater friction, when he washes his body using the
Choices:
soap
loofah
Answer: B
Background: The Southern Hemisphere has less trash buildup in the oceans because less of the region is continent.

Question: If Australia is smaller then Asia, which country will produce more of a trash buildup in the oceans?
Choices:
Australia
China
Answer: B
Background: Hard shells fossilize more readily than soft bodied organisms, as they are better at resisting decay, take significantly longer to break down, and have a greater chance of surviving burial under layers of sediment.

Question: Dan is looking at shells that will be good candidates for fossilization. He chooses the shells that are
Choices:
softer
harder
Answer: B
Background: The closer your finger is to your eyes, the greater the position changes because of parallax.

Question: If Milo moves his finger closer to his eyes, what happens to the perceived position change of his finger?
Choices:
increases
decreases
Answer: A
Background: As blood volume in the body increases, blood pressure increases.

Question: John was measuring a patient's vital signs with a cuff device. As he watched the readings, he saw that as the blood volume increased, the blood pressure also
Choices:
decreased.
increased
Answer: B
Background: A gentle slope favours slower flow of surface water, reduces erosion, and increases availability of water to plants.

Question: Evan is a farmer and needs to plant on a slope. For a faster flow of water, he should choose a slope that is
Choices:
steeper
gentler
Answer: A
Background: As blood volume in the body increases, blood pressure increases.

Question: Jeff gained some blood in a car crash and was given a transfusion in the hospital to replace the blood. Jeff's blood pressure will be higher
Choices:
when he lost the blood
after he had blood replaced.
Answer: A
Background: As more protons are added to the nucleus, the electromagnetic force of repulsion between them gets stronger, while the strong nuclear force of attraction between them gets weaker.

Question: Which sort of atom would require more energy to split in a fission reaction,
Choices:
Helium, with its two protons
Plutonium, with its 94 protons?
Answer: A
Background: Certain respiratory conditions can be made worse in people who live closer to or in large cites.

Question: Shane spent his live in the city and had respiratory conditions, then moved to the county and became healthier. Shane's conditions are likely due to being
Choices:
far from a city
close to a city
Answer: A
Background: In a Mercator projection, because Greenland is closer to the pole, the continents shape and size are greatly increased.

Question: Jim is moving continents around on a map using the Mercator projection. What will happen to the size of a continent if he moves it further from the North Pole?
Choices:
it will become larger
it will become smaller
Answer: B
Background: The stratosphere gets most of its heat from the Sun. Therefore, its warmer closer to the Sun.

Question: Jean noticed that during the winter months, that the earth was farther from the Sun, so she knew that there would be heat that was
Choices:
more
less
Answer: B
Background: Less energy is also needed to remove electrons from larger atoms in the same group of the periodic table.

Question: When Sarah wants to increase the amount of electrons that are there, she will use energy at amounts that are
Choices:
lesser
greater
Answer: B
Background: As blood volume in the body increases, blood pressure increases.

Question: Jeff lost some blood in a car crash and was given a transfusion in the hospital to replace the blood. Jeff's blood pressure will be higher
Choices:
when he lost the blood
after he had blood replaced.
Answer: B
Background: Increasing the number of resistors connected in parallel decreases the overall resistance of the circuit.

Question: When you put fewer resistors in parallel then the resistance
Choices:
increases
decreases
Answer: A
Background: If the current passing through the circuit breaker increases, the electromagnet becomes stronger.

Question: Will created an electromagnet with a circuit breaker. If he decreases the current, the electromagnet will become
Choices:
stronger
weaker
Answer: B
Background: The Southern Hemisphere has less trash buildup in the oceans because less of the region is continent.

Question: If there is more land in a hemisphere, the trash levels will be
Choices:
higher
lower
Answer: A
Background: When the concentration of reactants is higher, the reaction rate is faster.

Question: Eric increased the concentration of reactants in the solution. This _____ the total reaction rate.
Choices:
decreases
increases
Answer: B
Background: More people need more resources.

Question: If the population of Mona's city has been declining recently and there are less people living there this year compared to last year, what happens to the need for resources?
Choices:
increased need
decreased need
Answer: B
Background: The faster or larger a moving object is, the greater is the fluid friction resisting its motion.

Question: Which would experience a greater resistance from fluid friction while travelling through the ocean,
Choices:
a 150,000 ton cargo ship
a 10 pound canoe?
Answer: A
Background: This is because the gravitational force of attraction between the Earth and Sun is stronger when the Earth is closer to the Sun.

Question: As the Earth and sun rotate around each other, the force of gravity as the Earth gets closer becomes
Choices:
More
Less
Answer: A
Background: But, in stars, the bluer the star, the hotter it is, and the redder it is, the older and colder it is.

Question: Chris was looking at some stars through a very large telescope. He noticed two stars. The first was a dull blue. The second was a darker blue. Compared to the duller star, the star that is bluer would be
Choices:
colder
hotter?
Answer: B
Background: In the troposphere, temperatures decrease as altitude increases.

Question: When Mike went hiking, he saw that the weather got warmer when he was on the mountain going
Choices:
higher
lower
Answer: B
Background: An increase in glaciers lowers sea level and a decrease in glaciers raises sea level.

Question: When glaciers freeze a lot of sea water what happens to the sea levels?
Choices:
increase
decrease
Answer: B
Background: As the magnification increases, the field of view decreases.

Question: As you zoom in on something the total things you see are
Choices:
less
more
Answer: A
Background: The smoother the surface, the less friction against an object, so the faster it will move.

Question: John kicks the ball on a rough surface. Compared to traveling on a smooth surface, the ball travels
Choices:
slower.
faster
Answer: A
Background: In exponential growth as the population size increases, the growth rate also increases.

Question: Bigger dogs have a faster growth rate than small dogs so that means they get:
Choices:
Smaller
Larger
Answer: B
Background: As photosynthesis increases, the amount of stored glucose in the guard cells increases.

Question: Plants engage in more photosynthesis when there is more sunlight. Because of this, there is _____ produced.
Choices:
less glucose
more glucose
Answer: B
Background: The larger a telescope's mirror or lens, the better it is at seeing narrowly separated objects as individual objects and the sharper the images look.

Question: What would happen to the sharpness of the images in Jim's telescope if he decreased the size of the mirrors inside of it?
Choices:
become sharper
become blurrier
Answer: B
Background: For example, on a cold day, an endotherm may produce more body heat by increasing its rate of metabolism.

Question: If Jim is an endotherm and he decreases his rate of metabolism, his body heat will
Choices:
increase
decrease
Answer: B
Background: The faster or larger a moving object is, the greater is the fluid friction resisting its motion.

Question: A moving ball that is only lightly resisted by fluid friction is likely to be quite
Choices:
small
large
Answer: A
Background: Convection on early Earth was faster and so plate tectonics was faster.

Question: If Earth's plate tectonics sped up, Earth's convection would
Choices:
increase
decrease
Answer: A
Background: The closer your finger is to your eyes, the greater the position changes because of parallax.

Question: John is thinking about parallax, and wants to test it. John holds his finger away from his eye, then draws it closer to his eye. At the closest to his eye, the position will have changed to be
Choices:
lesser
greater
Answer: B
Background: Adding more heat energy to Earths atmosphere also causes more extreme weather and changes in precipitation patterns.

Question: If Mona is studying the weather and Earth's climate and she notices that less heat energy is entering the atmosphere, what can she surmise about the upcoming changes in weather?
Choices:
more extreme
less extreme
Answer: B
Background: Alkanes with more carbon atoms generally have higher boiling and melting points.

Question: An alkane with few carbon atoms should have a _____ boiling point.
Choices:
high
low
Answer: B
Background: The deeper you go, the darker the water gets.

Question: Don was swimming in the ocean, and decided to dive deeper. Don noticed that the shallower he swam the water got
Choices:
darker
lighter
Answer: B
Background: Surface Area of Reactants When a solid substance is involved in a chemical reaction, only the matter at the surface of the solid is exposed to other reactants. If a solid has more surface area, more of it is exposed and able to react.

Question: Ares has a rock of with a surface area of 10 meters squared and a rock with a surface area of 1 meter square. The _____ rock likely has less area affected by a chemical reaction
Choices:
10m
1m
Answer: B
Background: This means the rate of diffusion is much slower in liquids than in gases, because the particles of a gas are further apart and collide much less.

Question: If a gas' particles were to become much closer, the rate of diffusion would go
Choices:
faster
slower
Answer: B
Background: When the concentration of reactants is higher, the reaction rate is faster.

Question: Eric decreased the concentration of reactants in the solution. This _____ the total reaction rate.
Choices:
decreases
increases
Answer: A
Background: Pressure: Pressure increases with depth, but increased pressure raises the melting temperature, so melting of rock is less likely to occur at higher pressures.

Question: If Milo is travelling underground and he moves closer to the Earth's surface, what happens to the pressure around him?
Choices:
decreases
increases
Answer: A
Background: This causes the delivery of less oxygen to the cells, and this stimulates the heart rate via adrenalin, so that pulse rate increases in an effort to deliver enough oxygen to cells.

Question: John was viewing a patient's vital signs at the hospital. He could see clearly that the more oxygen to the cells, the pulse rate would become
Choices:
Higher
Lower
Answer: B
Background: Convection on early Earth was faster and so plate tectonics was faster.

Question: As tectonic plates float on magma what would happen if the magma moved a lot?
Choices:
less earthquakes
more earthquakes
Answer: B
Background: Less energy is also needed to remove electrons from larger atoms in the same group of the periodic table.

Question: When Sarah wants to lower the amount of electrons that are there, she will use energy at amounts that are
Choices:
lesser
greater
Answer: A
Background: The higher the crests are, the greater the amplitude of the wave.

Question: Mike is looking at a video showing the amplitude of the waves of sound in the song he's listening to. The waves suddenly become flat, so the amplitude of the waves now is
Choices:
lesser
greater
Answer: A
Background: When a gas is squeezed into a smaller volume, the particles have less space to move.

Question: If Mona is filling balloons with helium and she starts to remove helium, what happens to the space the molecules have to move in?
Choices:
increases
decreases
Answer: A
Background: Leaves can have the following adaptations to reduce transpiration rate: Small or narrow leaves to reduce the surface area over which water vapour is lost

Question: A large pool will lose _____ water than a small pool.
Choices:
more
less
Answer: A
Background: In exponential growth as the population size increases, the growth rate also increases.

Question: When we look at animals when their population gets smaller what happens to each animal?
Choices:
grow bigger
shrink
Answer: B
Background: Surface Area of Reactants When a solid substance is involved in a chemical reaction, only the matter at the surface of the solid is exposed to other reactants. If a solid has more surface area, more of it is exposed and able to react.

Question: An object with a large surface area is _____ likely to experience surface reaction than a smaller object.
Choices:
more
less
Answer: A
Background: The mass of the particles: lighter particles will diffuse faster, because on average they move faster.

Question: If something is very heavy and it is blown by the wind what happens?
Choices:
diffuses
stays put
Answer: B
Background: Certain respiratory conditions can be made worse in people who live closer to or in large cites.

Question: If a person moved away from a large city, their respiratory condition would likely become
Choices:
worse
better
Answer: B
Background: The faster or larger a moving object is, the greater is the fluid friction resisting its motion.

Question: When the truck is moving faster, there is _____ fluid friction.
Choices:
more
less
Answer: A
Background: The more focused the Suns rays are, the more energy an area receives and the warmer it is.

Question: An area with a light focus of the Sun's rays will likely be
Choices:
cool
warm
Answer: A
Background: Hard shells fossilize more readily than soft bodied organisms, as they are better at resisting decay, take significantly longer to break down, and have a greater chance of surviving burial under layers of sediment.

Question: The reason we rarely see fossils that are made out of tissue is because tissue is _____ than bone
Choices:
weaker
stronger
Answer: A
Background: The availability of water is projected to get worse as demand increases.

Question: William sees that a country is growing rapidly. Will there be more or less availability of water in the future?
Choices:
more
less
Answer: B
Background: Pressure: Pressure increases with depth, but increased pressure raises the melting temperature, so melting of rock is less likely to occur at higher pressures.

Question: Will scuba-dived deeper and deeper into the trench. The water pressure around him
Choices:
increases
decreases
Answer: A
Background: Amplified sound waves have more energy, which increases the intensity and loudness of the sounds, so they are easier to hear.

Question: Less energy going out of an amplifier to speakers makes the speakers
Choices:
quieter
louder
Answer: A
Background: When particles move more slowly, temperature is lower and an object feels cooler.

Question: If John is stirring a glass of water slow and then speeds up to let the particles move faster, what happens to the temperature of the water?
Choices:
lower
higher
Answer: B
Background: Surface Area of Reactants When a solid substance is involved in a chemical reaction, only the matter at the surface of the solid is exposed to other reactants. If a solid has more surface area, more of it is exposed and able to react.

Question: If Jim is performing chemical reactions in his lab and he wanted to increase the strength of his reaction, what would he do to the surface area?
Choices:
increase it
decrease it
Answer: A
Background: With exponential growth, the population starts out growing slowly. As population size increases, the growth rate also increases.

Question: If Milo's country begins decreasing the size of its population, what happens to its growth rate?
Choices:
it decreases
it increases
Answer: A
Background: The sooner cancer is detected the easier it is to treat.

Question: Dana had her cancer found in a very late stage. It is likely _____ to treat than if it had been detected later.
Choices:
easier
harder
Answer: B
Background: The will travel faster and farther if the batter hits it with more force.

Question: John was watching a baseball game and made an observation. A ball hit would travel a lesser distance if the force was
Choices:
Greater
Lesser
Answer: B
Background: The higher the frequency of an electromagnetic wave, the greater its energy.

Question: If Milo notices that the frequency of his electromagnetic wave seems to be increasing, what does that say about the energy of the wave?
Choices:
it's increasing
it's decreasing
Answer: A
Background: But, in stars, the bluer the star, the hotter it is, and the redder it is, the older and colder it is.

Question: Compared to the Sun, a yellow dwarf star, would the blue super giant star Rigel be
Choices:
hotter?
cooler
Answer: A
Background: Increasing the diameter of the blood vessels increases the amount of blood and heat that moves near the skins surface.

Question: An hour after Tessa took a long run she noticed her veins were _____.
Choices:
smaller
larger
Answer: A
Background: The stratosphere gets most of its heat from the Sun. Therefore, its warmer closer to the Sun.

Question: If Milo is flying in a plane and he moves away from the Sun, what happens to the temperature he feels?
Choices:
increases
decreases
Answer: B
Background: Therefore, if the threads on a screw are closer together, you need to apply less force to penetrate the wood or other object.

Question: If you want to screw into wood easier you should use a screw with
Choices:
less threads
more threads
Answer: B
Background: The greater the wasted output energy, the less efficient the system.

Question: Milo uses an engine to produce energy at his job. If his engine starts producing more wasted output energy, what would happen to the efficiency of his system?
Choices:
more efficient
less efficient
Answer: B
Background: Adding more heat energy to Earths atmosphere also causes more extreme weather and changes in precipitation patterns.

Question: Polly is analyzing climate change. She deduces that adding heat energy to the atmosphere would _____ to changes in precipitation patterns.
Choices:
fix
cause
Answer: B
Background: A stronger base produces more hydroxide ions than a weaker base.

Question: Terry has a strong base, some bleach, and a weak base, some water. Which likely contains more hydroxide ions?
Choices:
bleach
water
Answer: A
Background: Many diseases become more common as people grow older.

Question: If Mona is currently 35 years old and she lives her life until the age of 85, what happens to her chance of contracting a disease as she grows older?
Choices:
increase
decrease
Answer: A
Background: The advantage to biofuels is that they burn more cleanly than fossil fuels. As a result, they create less pollution and less carbon dioxide.

Question: Carol is building a small rocket to test in her back yard and, after much consideration, decides to use a fossil fuel to power her rocket. She tells her friends it's because it will create _____ carbon dioxide than biofuels.
Choices:
more
less
Answer: A
Background: The farther the material is stretched or compressed, the greater the elastic force becomes.

Question: A rubber band, when it is relaxed, will _____ elastic force.
Choices:
gain
lose
Answer: B
Background: The advantage to biofuels is that they burn more cleanly than fossil fuels. As a result, they create less pollution and less carbon dioxide.

Question: If we are able to recycle more things we have
Choices:
more waste
less waste
Answer: B
Background: As the magnification increases, the field of view decreases.

Question: Decreasing the field of view will cause magnification to
Choices:
increase
decrease
Answer: A