allenai/quartz huggingface dataset:
Background: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.

Question: John's town used to have lots of water, back when there were only a few hundred people. However, now that the town holds several thousand people, the water availability is
Choices:
scarce
plentiful
Answer: A
Background: Electrons at lower energy levels, which are closer to the nucleus, have less energy.

Question: Electrons further away from a nucleus have _____ energy levels than close ones.
Choices:
higher
lower
Answer: A
Background: An object with greater mass or greater velocity has more kinetic energy.

Question: Milo threw both a basketball and a baseball through the air. If the basketball has more mass then the baseball, which ball has more kinetic energy?
Choices:
basketball
baseball
Answer: A
Background: If there are more greenhouse gases in the atmosphere, more ultraviolet radiation will be trapped and the Earth will heat up.

Question: If greenhouse gases in the atmosphere were to be doubled, Earth will become
Choices:
cooler
warmer
Answer: B
Background: The temperature of matter increases with the added energy.

Question: If you put a lot of energy into some food the temperature of it will
Choices:
increase
decrease
Answer: A
Background: When your brain senses that your body temperature is increasing, it sends messages to the blood vessels in the skin to increase in diameter.

Question: If Milo has just performed a hard workout and his body temperature increases, what happens to the size of his blood vessels?
Choices:
decrease
increase
Answer: B
Background: A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.

Question: John's company committed to decrease greenhouse gas production worldwide. What likely happens to the global temperature in the future as a result?
Choices:
it will increase
it will decrease
Answer: B
Background: As the Universe expands, galaxies move further and further apart.

Question: A scientist sees that some galaxies are further apart than before, so they know that the universe's expansion is
Choices:
less
more
Answer: B
Background: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.

Question: Ian sees an object with few colliding particles, and he compares it to another object with few colliding particles. Which is true about the objects?
Choices:
the object with many colliding particles has a lower concentration of particles
the object with many colliding particles has a higher concentration of particles
Answer: A
Background: As the amount of water increases, the melting point of rock decreases.

Question: If Mona adds more water to her cauldron of melting rock, what will happen to the melting point of that rock?
Choices:
increase
decrease
Answer: B
Background: A: The more carbon atoms there are, the greater the number of possible arrangements of carbon atoms.

Question: When there are fewer carbon atoms in something there are
Choices:
many options
few options
Answer: B
Background: Warmer molecules vibrate faster than cooler ones.

Question: Eric increased the heat of the molecules. They now vibrate
Choices:
faster
slower
Answer: A
Background: Water density increases as salinity and pressure increase, or as temperature decreases.

Question: If you mixed salt water and regular water which would float?
Choices:
regular water
salt water
Answer: A
Background: In Life Sciences it is important to note that whenever a structure has an increased surface area, there is an increase in the functioning of that structure.

Question: A structure with an increased surface area will _____ in functioning.
Choices:
increase
decrease
Answer: A
Background: The farther you stretch the band, the greater the resistance is.

Question: Jim is playing with a rubber band by stretching and releasing it. Would he feel less resistance stretching the band to
Choices:
40 cm or
30 cm
Answer: B
Background: In transipration, at warmer temperatures water molecules move faster, and the rate of evaporation from stomata is therefore much faster.

Question: John monitors the log to see the temperature of the water, and he notices that as the temperature rises, the evaporation rate is
Choices:
Higher
Lower.
Answer: A
Background: The farther you stretch the band, the greater the resistance is.

Question: Eric relaxes a rubber band. The band's resistance
Choices:
decreases
increases
Answer: A
Background: However, the energy is diluted as an electromagnetic wave travels farther from its source because it spreads out over an ever-larger area.

Question: An electromagnetic wave is traveling. Ned notices that the wave has stayed at its origin. As it travels, it is
Choices:
more diluted
less diluted.
Answer: B
Background: The more acidic a solution is, the closer its pH value will be to 0

Question: If Mona is making lemonade and she decreases the acidity of it by adding more lemons, what happens to its closeness to pH 0?
Choices:
increases
decreases
Answer: B
Background: Anaerobic exercises cause muscles to get bigger and stronger.

Question: When we spend time lifting a lot of weights we become
Choices:
weaker
stronger
Answer: B
Background: With a higher concentration of hydrogen ions, a solution is more acidic but has a lower pH.

Question: If Jim removes hydrogen ions from his solution, what will happen to the level of acidity?
Choices:
it will become less acidic
it will become more acidic
Answer: A
Background: The closer the field lines are drawn together, the stronger the field being described.

Question: The gravitational force between two things that are far apart is
Choices:
weaker
stronger
Answer: A
Background: Objects with greater mass have a stronger force of gravity between them.

Question: An asteroid traveled equal distance between a small massed planet and a large massed planet and got caught by one of their gravitational pulls. Which one is less likely to have caught the asteroid?
Choices:
Small planet
Large planet
Answer: A
Background: Older rocks are at the bottom and younger rocks are at the top.

Question: When we dig up rocks the deeper we get the rocks get
Choices:
older
younger
Answer: A
Background: In an inverse relationship, when one variable increases, the other variable decreases.

Question: As more goats are introduced to an area with grass what will happen to the grass levels?
Choices:
increase
decrease
Answer: B
Background: The more basic a solution is, the closer its pH value will be to 14.

Question: Ian decreases the pH of his water. Its pH value becomes more
Choices:
acidic
basic
Answer: A
Background: Genotypes with greater fitness produce more offspring and pass more copies of their alleles to the next generation.

Question: If a dog is extremely unfit and unhealthy breeders will want it to have
Choices:
more offspring
less offspring
Answer: B
Background: In bigger atoms, valence electrons are farther from the nucleus.

Question: Charles sees an atom through the microscope that is the smallest he's ever seen. The valence electrons in this atom are likely _____ the nucleus
Choices:
far from
close to
Answer: B
Background: The sooner cancer is treated, the greater the chances of a cure.

Question: Don is getting screened for cancer. Because his cancer is caught early, at the first screening, the chance of a cure is
Choices:
greater
lesser
Answer: A
Background: Smaller tributary glaciers, like tributary streams, flow into the main glacier in their own shallower U-shaped valleys.

Question: If Milo is out exploring and he comes across two glaciers, each with their own u-shaped valley, will the smaller or larger glacier have a larger u-shaped valley?
Choices:
larger glacier
smaller glacier
Answer: A
Background: The more acidic a solution is, the closer its pH value will be to 0

Question: Eric drank a glass of juice. The juice tasted sweet. The pH of the drink is likely closest to
Choices:
0
1
Answer: B
Background: Exercising muscles increases their size, and bigger muscles have greater strength.

Question: Geremy went to the gym frequently, while Tim did not. Who likely has larger muscles?
Choices:
Geremy
Tim
Answer: A
Background: The faster the clicks of a Geiger counter occur, the higher the level of radiation.

Question: By moving a Geiger counter from a block of Uranium to a rock that has lower radiation, was the scientist able to hear
Choices:
more clicks
fewer clicks?
Answer: B
Background: For a given medium, sound waves travel more slowly at lower temperatures.

Question: John was watching the sound waves in his electronic monitor when he noticed something. The speed of the sound waves was slower when the temperature was
Choices:
higher
lower
Answer: B
Background: More recently, the death rate has fallen because of the availability of more food and medical advances.

Question: When people forgot how to farm the population
Choices:
decreased
increased
Answer: A
Background: As humidity increases, the water potential gradient across the inside and outside the leaf become more equal, and so the rate of transpiration decreases.

Question: As the air becomes drier, transpiration of a leaf will
Choices:
increase
decrease
Answer: A
Background: The more cylinders a car engine has, the more powerful its engine can be.

Question: Tommy traded in his four-cylinder Pinto for an eight-cylinder Mustang. The Pinto engine was
Choices:
more powerful
less powerful.
Answer: B
Background: Breast cancer is rare in teens. It becomes more common as women get older.

Question: When people get older what happens to their risk of cancer?
Choices:
decreases
increases
Answer: B
Background: Air pressure is less at higher elevations.

Question: Air pressure is lower in the
Choices:
mountains
valleys.
Answer: A
Background: Objects with greater mass have a stronger force of gravity between them.

Question: If Mona is comparing an orange and an apple and she determines that the apple is more massive then the orange, which object has more gravity?
Choices:
orange
apple
Answer: B
Background: If two objects have the same mass, the object with the higher temperature has greater thermal energy.

Question: If you were to cool down steel what would happen to its thermal energy?
Choices:
increase
decrease
Answer: B
Background: The farther the object is stretched or compressed, the greater its elastic potential energy is.

Question: Decker pulls some taffy as far as he can. The elastic potential energy of the candy would
Choices:
increase
decrease
Answer: A
Background: Increasing air temperature decreases atmospheric pressure.

Question: The air gets thinner when it is
Choices:
hot
cold
Answer: A
Background: The closer together the particles are, the greater the amplitude of the wave.

Question: When two crests are closes together in a wave what increases?
Choices:
frequency
amplitude
Answer: B
Background: With fewer trees, the air is drier and droughts are more common.

Question: John was looking at the weather data and making some observations. He saw that with less trees, droughts were
Choices:
Greater
Lesser
Answer: A
Background: For bases we can state the folllowing: The higher the pH of a substance, the more basic it is.

Question: Sue measured water to be a pH of 7, and she measured bleach at a pH of 11. Which substance is more basic?
Choices:
water
bleach
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 increased the rope segments on his pully; this means he will need to use _____ force on it.
Choices:
more
less
Answer: B
Background: The voice becomes deeper as the larynx in the throat grows larger.

Question: If your larynx were to grow, your voice would become _____ deep.
Choices:
more
less
Answer: A
Background: Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.

Question: If Mary is cleaning her pool and she increases the pH value of the water, what happens to the acidity of the water?
Choices:
increases
decreases
Answer: B
Background: The closer to the surface an aquifer is, the easier it is to get the water.

Question: An aquifer deep down will provide _____ access to its water than one near the surface.
Choices:
easier
harder
Answer: B
Background: For a given medium such as air, sound has a slower speed at lower temperatures.

Question: Mike wants his voice to travel slowly, so he will speak in a room that is
Choices:
colder
warmer
Answer: A
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: If Jim has a container of hydrogen gas that is 50 liters in volume and he moves the gas to a container that is 40 liters in volume, what happens to the density of the gas?
Choices:
increases
decreases
Answer: A
Background: Larger alkenes have lower boiling and melting points, so they are liquids or waxy solids at room temperature.

Question: The largest alkenes should have the _____ boiling and melting points.
Choices:
lowest
highest
Answer: A
Background: Thicker resistors offer less resistance than thinner resistors.

Question: The thinner a resistor equals _____ resistance.
Choices:
less
more
Answer: B
Background: As more resistors are added in series, the total resistance of the circuit increases.

Question: Causing a series to lose resistors will result in a/an _____ in the total resistance of the circuit.
Choices:
increase
decrease
Answer: B
Background: More particles inside the container means more collisions, and more collisions mean a higher pressure.

Question: Sara is in a container representing an object. Her container has 30 balls flying around, representing particles. Tyler is in another container, and his contains 5 balls. Which person's container likely would be under the least pressure?
Choices:
Sara's
Tyler's
Answer: B
Background: When we add resistors in parallel to each other the total resistance decreases and the current increases.

Question: Eric adds resistors in parallel to a circuit. The total current
Choices:
increases
decreases
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: The population of coyotes has risen in Michigan, this raise in opportunistic predators has made the cat population
Choices:
raise
lower.
Answer: B
Background: A thinner wire is more difficult for electrons to move through than a thicker wire.

Question: If you use a thin piece of wire then electrons move
Choices:
easier
harder
Answer: B
Background: The surface is heated by the Sun and some of that heat radiates back into the air. This makes the temperature higher near the surface than at higher altitudes.

Question: Devon's cat, Fluffy, is looking for a nice warm spot to lay out in the sun. Because of how the sun heats the earth, and how some heat radiates into the air, the cat laying high up in a tree branch, rather than on the ground, would keep the cat
Choices:
cooler
warmer
Answer: A
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: A
Background: In an inverse relationship, when one variable increases, the other variable decreases.

Question: As goats are removed from an area with grass what will happen to the grass levels?
Choices:
increase
decrease
Answer: A
Background: If the gas is heated, the particles will move faster as they gain more energy.

Question: Tina cools some oxygen gas. The oxygen particles will move
Choices:
faster
slower
Answer: B
Background: The bigger the waves are and the more sediment they carry, the more erosion they cause.

Question: Karly is studying two rivers and how they are affecting the rock around them. If the 2nd river she looks at is half as big as the first river she is studying, then Karly would expect to see _____ erosion caused by the 2nd river.
Choices:
more
less
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 Milo increases the number of crests of his wave, what happens to the frequency of his wave?
Choices:
increases
decreases
Answer: A
Background: The higher the pH value is, the stronger the base.

Question: If Jim decreases the pH value of his swimming pool, the base becomes
Choices:
stronger
weaker
Answer: B
Background: A stronger acid produces a greater concentration of ions than a weaker acid.

Question: John was looking at the substances and noticed something. The stronger that the acid was, the concentration of Ions became
Choices:
Larger
Smaller
Answer: A
Background: Longer length resistors will offer more resistance than shorter resistors.

Question: If you have a wire that is long it will have
Choices:
low resistance
high resistance
Answer: B
Background: The further objects are away from each other, the smaller the gravitational force.

Question: Planets coming closer means there will be _____ gravitational force between them.
Choices:
more
less
Answer: A
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 black moths produce more adult offspring than white ones. The white moth's traits will likely become _____ common over time.
Choices:
less
more
Answer: A
Background: More people also means more clearing of land for agriculture and development.

Question: A city will grow smaller when the number of people who are there
Choices:
grows
shrinks
Answer: B
Background: The more energy the particles in matter have, the faster and more strongly they vibrate.

Question: Compared to a block of ice , would the water molecules in a kettle of boiling water move
Choices:
faster?
slower
Answer: A
Background: Higher frequency waves have greater energy.

Question: If Jim changes his radio transmitter to a higher frequency, the energy produced is
Choices:
greater
smaller
Answer: A
Background: The bigger the waves are and the more sediment they carry, the more erosion they cause.

Question: When there are a lot of waves things are eroded
Choices:
faster
slower
Answer: A
Background: Solar power is expensive, but as demand increases technology improves and costs decrease.

Question: Years from now, solar power will be _____ than it is today.
Choices:
more expensive
less expensive
Answer: B
Background: The farther apart you move your hands, the stronger the force of the rubber band pulling your hands together.

Question: As you pull on a string the harder that you pull it the _____ the force.
Choices:
greater
weaker
Answer: A
Background: The closer objects are to each other, the stronger the gravitational force between them.

Question: When a star is moving away from a planet, the star will be pulled into it if the gravitational force is
Choices:
weaker
stronger
Answer: A
Background: Smoking reduces the amount of oxygen available for diffusion at the lungs, so less oxygen gets absorbed and blood is oxygenated to a lesser degree.

Question: Suppose that Mary smokes cigarettes for 20 years. If you measured the oxygen levels in her blood before she started smoking and compared them to oxygen levels later in her life, what would you find?
Choices:
less oxygen in her blood later in life
more oxygen in her blood later in life
Answer: A
Background: Water near shore generally has more dissolved nutrients than water farther from shore.

Question: Chris is studying Lake Michigan. He takes soil samples from the Lake in two places. The first sample he takes from right near the shore. The second sample is taken from the middle of the lake. The _____ sample will have greater dissolved nutrients in it.
Choices:
first
second
Answer: A
Background: Older age, male gender, and a family history of cardiovascular disease all increase the risk of developing cardiovascular diseases and cant be controlled.

Question: Rich is 60 years old and Tony is 30 years old. _____ has a greater risk of developing cardiovascular disease.
Choices:
Rich
Tony
Answer: A
Background: Light-skinned people get sunburned more quickly than people with darker skin.

Question: Two people are standing out in the sunlight; one with dark skin, one with light skin. The person with dark skin will be burned
Choices:
more
less
Answer: B
Background: The longer the resistor, the more resistance it has.

Question: It Jim makes his resistor longer, the resistance is exhibits is
Choices:
smaller
greater
Answer: B
Background: Electrons at lower energy levels, which are closer to the nucleus, have less energy.

Question: Sally has an electron. Sue has an electron that is farther from the nucleus. Whose electron has lower energy?
Choices:
Sally
Sue
Answer: A
Background: The warmer a climate is, the more types of vegetation it will have and the greater the rate of biological weathering.

Question: If Mona is exploring different continents and she notices that Africa is cooler then North America, which continent will have more types of vegetation?
Choices:
North America
Africa
Answer: A
Background: Solar power is expensive, but as demand increases technology improves and costs decrease.

Question: If demand for solar power were to fall, the power would become _____ expensive.
Choices:
less
more
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 reduced 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 considered to be at a
Choices:
larger age
smaller age
Answer: B
Background: Nations that have more industry produce more hazardous waste.

Question: If America has a bigger industrial sector then China, which country will produce more hazardous waste?
Choices:
America
China
Answer: A
Background: Larger telescopes can collect more light.

Question: To view the most stars, use a larger telescope because it can collect
Choices:
more or
less light.
Answer: A
Background: If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.

Question: Peter removed salt to his juice one morning. The mixture became _____ dense.
Choices:
more
less
Answer: B
Background: The upper rock layers are much younger.

Question: Tom was digging in his backyard one day, after two inches he picked up an oval shaped rock. Tom kept digging and after twelve inches he picked up a square shaped rock, which rock was younger?
Choices:
The Oval Shaped Rock
The Square Shaped Rock
Answer: A
Background: Exercising muscles increases their size, and bigger muscles have greater strength.

Question: Dwayne Johnson is weaker than Kevin Hart because he exercises less and therefore his muscles have grown
Choices:
larger or
smaller.
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: If Jim decreases 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: A
Background: The more basic a solution is, the closer its pH value will be to 14.

Question: When a number on the pH scale is very low it is said to be
Choices:
acidic
basic
Answer: A
Background: Objects with greater mass have a stronger force of gravity.

Question: Greta lost weight after eating food. Her force of gravity
Choices:
increased
decreased
Answer: B
Background: The greater the objects mass, the greater the force of gravitational attraction.

Question: If Mona adds some mass to the object she is creating for her school project, what happens to the gravitational attraction of that object?
Choices:
increase
decrease
Answer: A
Background: Exhaling, or breathing out, decreases the size of the chest, which increases air pressure inside the lungs.

Question: If Mary is running and race and begins to breathe hard, what happens to the air pressure in her lungs as she constricts her chest?
Choices:
increases
decreases
Answer: A
Background: As humidity increases, the water potential gradient across the inside and outside the leaf become more equal, and so the rate of transpiration decreases.

Question: Milo operates a greenhouse for profit. One day he turns down the humidity controls. What will happen to the rate of transpiration of the plants in the greenhouse?
Choices:
increase
decrease
Answer: A
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: Dan is watching the ship leave the dock. While the ship is near him, it is massive. However, as the ship floats away, it begins to look
Choices:
bigger
smaller
Answer: B
Background: We also saw that adding resistors to a series circuit increases the total resistance of the circuit, causing the current to decrease.

Question: Jim loves to build circuits. One day he builds a circuit that has less resistors then any other circuit he has built. Since the circuit has less resistors the amount of current in the circuit is
Choices:
reduced
increased
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: Will has a pully with 5 rope segments. Alan's pully has an equal size rope with 7 segments. Which person needs less force to do the same job?
Choices:
Will
Alan
Answer: B
Background: The smaller a population is, the more allele frequencies may drift.

Question: If Milo is part of a larger population then Jerry is, which person's population will experience greater drifting of allele frequencies?
Choices:
Milo
Jerry
Answer: B
Background: Light-skinned people get sunburned more quickly than people with darker skin.

Question: A person that is white will get _____ than an African American person at the beach.
Choices:
less sunburned
more sunburned
Answer: B
Background: Nations that have more industry produce more hazardous waste.

Question: The United States manufactured many more products last year than Belize did. This results in _____ producing a higher amount of hazardous waste.
Choices:
Belize
the United States
Answer: B
Background: Higher-frequency waves have more energy.

Question: Andy is noticing that all of the waves in the area are higher-frequency waves. Andy can then deduce that these waves have energy that is
Choices:
more
less
Answer: A
Background: As you increase the number of carbon atoms in a hydrocarbon, the number of isomers quickly increases.

Question: Jeffrey increases the number of carbon atoms to a natural gas hydrocarbon in a lab. The isomers
Choices:
increase
decrease
Answer: A
Background: When two skateboarders push against each other, it causes them to move apart. The harder they push together, the farther apart they move.

Question: When you use more force to move a car it will
Choices:
move less
move further
Answer: B
Background: Exhaling, or breathing out, decreases the size of the chest, which increases air pressure inside the lungs.

Question: When people breathe out their chest becomes
Choices:
larger
smaller
Answer: B
Background: The more field lines that are drawn, the stronger the field.

Question: Dana draws many field lines on the chart. The field she is representing is likely
Choices:
strong
weak
Answer: A
Background: Muscles that are exercised are bigger and stronger than muscles that are not exercised.

Question: If a muscle is not exercised, it will become
Choices:
bigger
smaller
Answer: B
Background: Increasing the number of resistors in a series circuit increases the overall resistance of the circuit.

Question: If Jim removes resistors from the circuit he is building for his school science project, what will happen to the overall resistance of the circuit?
Choices:
it will increase
it will decrease
Answer: B
Background: The more curved the surface of a lens is, the more it refracts the light that passes through it.

Question: In a science class, the professor demonstrates refraction to the class. First, the professor shows a curved lens from a binocular, and then a flat pane of glass, demonstrating that
Choices:
the curved lens refracts more light
the flat pane refracts more light.
Answer: A
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: Will launches a rocket off the ground. As the speed of the gas that comes from the boosters increases, the rocket's height reached
Choices:
decreases
increases
Answer: B
Background: As more resistors are added in series, the total resistance of the circuit increases.

Question: If Ed adds a resistor to the circuit, the resistance will be
Choices:
greater
lower.
Answer: A
Background: More pollutants mean poorer air quality.

Question: You would find worse air near a
Choices:
factory
wooded area.
Answer: A
Background: Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.

Question: Kate makes a machine that is very unproductive, and it gets work done slowly, because it uses force in amounts that are
Choices:
lesser
greater
Answer: A
Background: As you increase the number of carbon atoms in a hydrocarbon, the number of isomers quickly increases.

Question: Jeffrey decreases the number of carbon atoms to a natural gas hydrocarbon in a lab. The isomers
Choices:
increase
decrease
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: Ron watches a wave for 10 seconds and notices 10 crests. He watches another wave for 10 seconds and sees 5 crests. Which wave has a greater frequency?
Choices:
10 crests
5 crests
Answer: A
Background: Nations that have more industry produce more hazardous waste.

Question: When you have a lot of factories in an area the level of trash will
Choices:
increase
decrease
Answer: A
Background: Areas near the equator are warmer than areas near the poles because they receive more direct sunlight.

Question: Places that are near the middle of earth are generally
Choices:
colder
warmer
Answer: B
Background: The darker the urine, the less water it contains.

Question: A doctor took two urine samples from Kyle, one on Tuesday and one on Wednesday. The Tuesday sample was a darker color than the Wednesday sample, which means that there was more water in
Choices:
the Tuesday sample
the Wednesday sample.
Answer: B
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: Lizzie visited a village where no predator wiped people out. The population got
Choices:
larger
smaller
Answer: A
Background: On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body.

Question: When it gets cold out what happens to our blood flow?
Choices:
decreases
increases
Answer: A
Background: Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.

Question: Low frequency bass notes have what length wavelengths
Choices:
long
short
Answer: A
Background: Solar power is expensive, but as demand increases technology improves and costs decrease.

Question: Ryan noticed that a popular solar panel is _____ expensive than it was.
Choices:
more
less
Answer: B
Background: The development of better missiles fostered better rocket technologies.

Question: Ollie is a rocket scientist and was testing missiles. Better missiles likely result in _____ rockets.
Choices:
worse
better
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: David is getting ready to fly into space on a rocket. As the rocket shoots upwards, part of the mass attaches, allowing the rocket to go
Choices:
higher
lower
Answer: B
Background: The surface is heated by the Sun and some of that heat radiates back into the air. This makes the temperature higher near the surface than at higher altitudes.

Question: If Jim climbs to the bottom of a mountain and takes the temperature after taking the temperature at the top of the mountain, which area will he get a higher reading at?
Choices:
top of the mountain
bottom of the mountain
Answer: B
Background: Better farming techniques and machines increased the food supply and the distribution of food.

Question: Jeff noticed the food supply changed over time in his city. The destruction of farming machines likely caused the food supply to
Choices:
decrease
increase
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: A rocket should be able to fly higher if its mass were
Choices:
higher
lower
Answer: B
Background: As the distance between the objects increases the magnetic force of attraction decreases.

Question: Lisa is hitting a tennis ball against the wall. As the tennis ball bounces towards the wall and away from her, the magnetic force of attraction between the wall and the ball
Choices:
increases
decreases.
Answer: A
Background: As the Universe expands, galaxies move further and further apart.

Question: When a city expands the distance across the city
Choices:
decreases
increases
Answer: B
Background: The more extreme the amount of metamorphism, the more difficult it is to tell what the original rock was.

Question: If pressure has exerted more force on a rock and increased it's metamorphism, would it be
Choices:
easier to determine what the original rock was
harder to determine what the original rock was?
Answer: B
Background: When your brain senses that your body temperature is increasing, it sends messages to the blood vessels in the skin to increase in diameter.

Question: Derek felt cold as he stood in the shade, and since his body was cooling down, he knew that his blood vessels in his skin were
Choices:
expanding
contracting
Answer: B
Background: With higher frequencies, the microwaves also have more energy.

Question: Tim adjusted his microwave so that it was at a lower frequency. This resulted in the waves inside the microwave to have
Choices:
less energy
more energy.
Answer: A
Background: Electrons at lower energy levels, which are closer to the nucleus, have less energy.

Question: Sally has an electron. Sue has an electron that is closer to the nucleus. Whose electron has lower energy?
Choices:
Sally
Sue
Answer: B
Background: The farther you stretch the band, the greater the resistance is.

Question: Jim is playing with a rubber band by stretching and releasing it. Would he feel more resistance stretching the band to
Choices:
40 cm or
30 cm
Answer: A
Background: The more tightly packed the particles inside the material are, the more dense we say they are.

Question: If Mona is unpacking coffee into a tin and she continues to remove more coffee, what happens to the density of the coffee inside the tin?
Choices:
increases
decreases
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 less difficult to identify had amounts of metamorphism that were
Choices:
more extreme
less extreme
Answer: B
Background: The more an elastic object is stretched or compressed, the greater its elastic potential energy is.

Question: An object with little elastic potential energy _____ be easily stretched.
Choices:
will
won't
Answer: A
Background: The harder the batter hits the ball, the greater will be its acceleration.

Question: If you use less force when accelerating a car it will go
Choices:
slower
faster
Answer: A
Background: Light-skinned people get sunburned more quickly than people with darker skin.

Question: A dark-skinned person will sunburn _____ than a pale person.
Choices:
slower
faster
Answer: A
Background: Gravity is a pull which all matter exerts on all other matter, the more mass, the stronger the pull.

Question: During a game of tug-o-war, two teams are pulling a rope, the team that will pull the least has people who weigh
Choices:
more
less
Answer: B
Background: The closer together the particles in a longitudinal wave are, the greater the amplitude.

Question: Causing particles in a longitudinal wave to come together causes the amplitude to
Choices:
decrease
increase
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: Jan lives in a great country and she is rich. Compared to another person in a poorer country, Jan will use an amount of energy that is
Choices:
greater
lesser
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: Polly was out in the sun. She has dark skin. Her skin likely absorbs _____ vitamin D than a light-skinned person.
Choices:
more
less
Answer: B
Background: Breast cancer is rare in teens but becomes more common as females get older.

Question: Jay's risk of breast cancer is 10% at age 25. What will happen to her risk of breast cancer at age 50?
Choices:
it will decrease
it will increase
Answer: B
Background: The warmer a climate is, the more types of vegetation it will have and the greater the rate of biological weathering.

Question: Ann and Bob were both farmers. Ann lived in a colder climate while Bob lived in a warmer climate. When they compared notes they found that the number of crops they could successfully grow was different. Who's farm would be able to grow more types of crops?
Choices:
Bob
Ann
Answer: A
Background: Genotypes with greater fitness produce more offspring and pass more copies of their alleles to the next generation.

Question: A genotype with good fitness will likely produce _____ offspring than a more fit one.
Choices:
more
less
Answer: A
Background: In a series circuit, the resistance increases as more resistors are added in series.

Question: Eric adds more resistors to the series circuit. The resistance
Choices:
increases
decreases
Answer: A
Background: The closer the charged objects are, the stronger the electrostatic force.

Question: Will was pulling some magnets apart. When is the electrostatic force the lowest?
Choices:
when the magnets are close
when the magnets are far
Answer: B
Background: The stratosphere contains the ozone layer, the temperatures increase as altitude increases.

Question: When in the stratosphere, Dean can tell that the temperature is getting cooler as the altitude he is at
Choices:
increases
decreases
Answer: B
Background: A given volume of a denser substance is heavier than the same volume of a less dense substance.

Question: Henry noticed that his piece of cake was heavier than his piece of butter. The cake was _____ dense.
Choices:
more
less
Answer: A
Background: In transipration, at warmer temperatures water molecules move faster, and the rate of evaporation from stomata is therefore much faster.

Question: Donna wants to have her water molecules move faster through transpiration, so she will make the temperature
Choices:
cooler
warmer
Answer: B
Background: The Earth travels faster in its elliptical orbit when it is closer to the Sun than when it is farther away.

Question: John was watching the planets rotate around the sun. He noticed that was the distance between the sun and earth is higher, the speed of Earth is
Choices:
Higher
Lower
Answer: B
Background: Bigger stars produce more energy, so their surfaces are hotter.

Question: Would a big star be
Choices:
hotter
colder
Answer: A
Background: Warm air is less dense than cool air, so it rises higher in the troposphere.

Question: If Jim raises the temperature of the air inside his balloon, will his balloon rise higher into the air or sink towards the ground?
Choices:
rise higher
sink lower
Answer: A
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: As waves get larger the frequency of them
Choices:
increases
decreases
Answer: B
Background: Thicker resistors offer less resistance than thinner resistors.

Question: Tony is laying cable that is 1 inch in diameter, while Rita lays cable that is 0.1 inches in diameter. Who's cable offers more resistance?
Choices:
Tony
Rita
Answer: B
Background: Bacteria with a mutation the helps resist antibiotics increase in numbers, so the mutation becomes more common.

Question: If there are fewer bacteria with the right mutation, will the occurrence of the mutation become
Choices:
more
less
Answer: B
Background: The voice becomes deeper as the larynx in the throat grows larger.

Question: Adam had a moderate voice as a child, but as his larynx grew larger with age, his voice got
Choices:
higher
deeper
Answer: B
Background: Therefore, water nearer shore usually contains more dissolved nutrients than water farther from shore.

Question: John was looking at the ocean water and made a great observation. The water nearer the shores had an amount of nutrients that was
Choices:
Greater
Lesser
Answer: A
Background: A stronger acid produces a greater concentration of ions than a weaker acid.

Question: If an acid is weak, it's concentration of ions will be
Choices:
increased
decreased.
Answer: B
Background: At higher temperatures, particles of reactants have more energy, so they move faster.

Question: If Milo is experimenting in his lab and he increases the temperature in the room, what happens to the energy of the particles in that room?
Choices:
it increases
it decreases
Answer: A
Background: For a given medium, sound has a slower speed at lower temperatures.

Question: When Dave screams outside he notices that the sound travels at different speeds in different temperatures. The sound travels faster when it is
Choices:
cold.
hot
Answer: B
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 less energy?
Choices:
closer
further away
Answer: A
Background: The farther apart you move your hands, the stronger the force of the rubber band pulling your hands together.

Question: The pulling force of a rubber band will _____ when you move your hands apart.
Choices:
increase
decrease
Answer: A
Background: The older a person is, the greater their chance of developing a cardiovascular disease.

Question: When someone gets older what happens to their heart
Choices:
stronger
weaker
Answer: B
Background: The closer objects are to each other, the stronger the gravitational force between them.

Question: If we bring two small magnets next to each other they will have _____ force than two large magnets.
Choices:
more
less
Answer: B
Background: Faster-moving water has more energy.

Question: When a car is going fast it has
Choices:
low energy
high energy
Answer: B
Background: Greater use of oil and other fossil fuels causes more pollution.

Question: Mike is looking at two cars to buy. The first car, a Toyota, uses twice as much oil and fossil fuels to run, compared to the Kia he is looking at. If Mike wants to buy the car that causes less pollution, he should buy the
Choices:
Toyota
Kia
Answer: B
Background: Temperature increases with depth inside the Earth, so melting of rocks is more likely to occur at greater depths.

Question: Mona is excavating a deep tunnel as part of an exploratory committee. As she travels upwards back from the Earth, what can she expect will happen to the temperature?
Choices:
increase
decrease
Answer: B
Background: Longer wires have more resistance than shorter wires.

Question: If a wire were to be doubled in length, it would have _____ resistance than the original length wire.
Choices:
more
less
Answer: A
Background: In electromagnetic waves with higher frequencies, photons have more energy.

Question: If Jim decreases the frequency of the radio waves on his shortwave radio, will the radio use
Choices:
less energy?
more or
Answer: A
Background: The hotter a resistor becomes the more resistance it has.

Question: If Milo decreases the heat he applies to a resistor, what happens to the resistance?
Choices:
increases
decreases
Answer: B
Background: The temperature of matter increases with the added energy.

Question: Jeff removes energy from his water. The water becomes more
Choices:
cold
hot
Answer: A
Background: The hotter a resistor becomes the more resistance it has.

Question: If Milo increases the heat he applies to a resistor, what happens to the resistance?
Choices:
increases
decreases
Answer: A
Background: Larger telescopes can collect more light.

Question: Alan saw Venus through his old telescope. He then looked through his bigger, better telescope. Venus likely appears brighter through the
Choices:
smaller telescope
bigger telescope
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 more gas particles?
Choices:
Rita
Eric
Answer: B
Background: Waves with shorter wavelengths have more energy.

Question: Dean is trying to get a wavelength that has less energy, so Dean will have his wavelength produce waves that are
Choices:
shorter
longer
Answer: B
Background: The hotter a main sequence star is, the brighter it is.

Question: A main sequence star that is very bright is not among the _____ stars
Choices:
hottest
coolest
Answer: B
Background: The higher the pH value is, the stronger the base.

Question: If we find something with a high pH value that is likely to be
Choices:
acidic
basic
Answer: B
Background: In a series circuit, the resistance increases as more resistors are added in series.

Question: Derek subtracts several resistors from his project within his series circuit, so therefore, within the series circuit, the resistance will have
Choices:
increased
decreased
Answer: B
Background: Gluons make quarks attract each other more strongly the farther apart the quarks get.

Question: Tim has a quark and pulls it farther away from Rob, who also has a quark. What happens to the attraction force between the quarks?
Choices:
it increases
it decreases
Answer: A
Background: The Moon has a greater effect on the tides because, although it is much smaller than the Sun, it is much closer.

Question: Tina had a large rock on the beach. Rich had a large rock 10 miles inland. The person with the rock that has less effect on the tides is
Choices:
Rich
Tina
Answer: A
Background: Larger alkenes have lower boiling and melting points.

Question: A smaller alkenes will melt _____ than a smaller one.
Choices:
sooner
later
Answer: B
Background: As the distance between the objects increases the magnetic force of attraction decreases.

Question: If Mona is holding a toy truck and a toy car a certain distance away from each other and she then moves the two objects closer together, which happens to the magnetic force of attraction between the two objects?
Choices:
increases
decreases
Answer: A
Background: In Life Sciences it is important to note that whenever a structure has an increased surface area, there is an increase in the functioning of that structure.

Question: What will happen to the functionality of a structure if Jim increases the surface area of it?
Choices:
functionality increases
functionality decreases
Answer: A