allenai/quartz huggingface dataset:
Background: More advanced farming practices allowed a single farmer to grow food for many more people.

Question: A farmer, using the newest farming practices, can expect to grow _____ crops.
Choices:
more
less
Answer: A
Background: The faster, longer, and farther the wind blows, the bigger the waves are.

Question: Mona is sitting at the beach watching the waves. If the wind starts blowing faster, what will happen to the size of the waves?
Choices:
increase
decrease
Answer: A
Background: The more curved the surface of a lens is, the more it refracts the light that passes through it.

Question: A pair of lenses on glasses that are curved would refract
Choices:
less light
more light
Answer: B
Background: The more current, the stronger the electromagnet.

Question: John started measuring the current, and notices that as the current got stronger the electromagnet became
Choices:
Weaker
Stronger
Answer: B
Background: Objects with greater mass have a stronger force of gravity.

Question: If Milo removes mass from an object, what will happen to the force of gravity that object generates?
Choices:
decreases
increases
Answer: A
Background: Increasing air temperature decreases atmospheric pressure.

Question: As the pressure in the atmosphere rises, the air temperature gets
Choices:
warmer
cooler or
Answer: B
Background: Faster-moving water has more energy.

Question: If Jim decreased the speed of water flowing out of his bathroom tap, what would happen to the amount of energy being transferred by the water?
Choices:
would increase
would decrease
Answer: B
Background: Richer nations use far more energy resources, especially fossil fuels, than poorer nations do.

Question: Between the United States, the richest nation in the world, and the Democratic Republic of Congo, the poorest nation in the world, which uses more gasoline per capita,
Choices:
the people in the United States
the people in the Democratic Republic of Congo?
Answer: A
Background: The closer the field lines are drawn together, the stronger the field being described.

Question: Will draws some field lines very close to each other. This field is likely
Choices:
strong
weak
Answer: A
Background: More dense water takes up less space than less dense water.

Question: Jeff found some not very dense water. He knows it is not very dense because it takes up _____ space than dense water.
Choices:
more
less
Answer: A
Background: Aerobic exercise increases the size and strength of muscles in the heart and helps all your muscles develop greater endurance.

Question: Someone that works out in the gym all the time will likely have _____ muscles than someone who sits at home all day.
Choices:
larger
smaller
Answer: A
Background: Larger alkenes have lower boiling and melting points.

Question: You are conducting an experiment on alkenes and discover that your larger alkenes have _____ boiling and melting points than the smaller ones.
Choices:
lower
higher
Answer: A
Background: If blood volume in the body decreases, blood pressure decreases.

Question: After a car accident, Carla gained a lot of blood. At the hospital, the doctors tell her that her blood pressure is now
Choices:
increased
decreased
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: After Sarah finishes her walk, she notices that her blood is not really pumping that hard. Sarah can know that since it's a cool day, she's giving off what kind of heat compared to usual?
Choices:
more
less
Answer: B
Background: If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.

Question: When water loses salt the water becomes
Choices:
more dense
less dense
Answer: B
Background: If the gas is cooled, the particles will move more slowly, because they will have less energy.

Question: If Jim decreases the amount of energy inside of a gas, the particles in the gas will move
Choices:
more
less
Answer: B
Background: In an inverse relationship, when one variable increases, the other variable decreases.

Question: If Jim has two variables that are part of an inverse relationship, what will happen to the second variable if he decreases the first variable?
Choices:
it increases
it decreases
Answer: A
Background: Therefore, water nearer shore usually contains more dissolved nutrients than water farther from shore.

Question: Eric analyzes water while deep sea fishing and compares it to bottled water. The bottled has _____ nutrients than the deep sea water.
Choices:
more
less
Answer: B
Background: For a given medium, sound has a slower speed at lower temperatures.

Question: When animals are moving in the heat they are
Choices:
faster
slower
Answer: A
Background: If we increase the resistance in a series circuit, by adding more resistors, then the total current decreases.

Question: Polly was removing resistors from a circuit. Decreasing the resistance in this series circuit will cause the total current to
Choices:
increase
decrease
Answer: B
Background: The larger the animal, the heavier the exoskeleton, making movement more difficult.

Question: An elephant, compared to a puppy, is a larger size, and therefore the weight of the elephant, compared to the puppy, is
Choices:
greater
lesser
Answer: A
Background: The water table is higher when there is a lot of rain and lower when the weather is dry.

Question: An increase in the water table indicates _____ rain.
Choices:
less
more
Answer: B
Background: As the distance between the objects increases, the force of gravitational attraction decreases.

Question: Ron pushed two balls close to each other. The balls now experience _____ gravitational force due to each other.
Choices:
more
less
Answer: A
Background: Compared with a less powerful device, a more powerful device can either do more work in the same time or do the same work in less time.

Question: When you use a 2 horsepower drill instead of a 1 horsepower drill it is
Choices:
more powerful
less powerful
Answer: A
Background: The larger the animal, the heavier the exoskeleton, making movement more difficult.

Question: Ease of mobility _____ when the animal is increased in size.
Choices:
increase
decrease
Answer: B
Background: It would be hard to get a big chunk of chocolate to dissolve in your milk or hot water. Maybe you could make hot chocolate from some smaller pieces like chocolate chips, but it is much easier to add a powder to your milk. This is because the smaller the pieces are, the more surface area they have.

Question: Will small pieces have more or less surface area than one large piece?
Choices:
less
more
Answer: B
Background: So the higher an object is above a surface, the more potential energy it has.

Question: The ball began to drop slowly above the table. The lower it drops above the table, the potential energy will
Choices:
decrease
increase.
Answer: A
Background: In Life Sciences it is important to note that whenever a structure has an increased surface area, there is an increase in the functioning of that structure.

Question: If Mona is building a structure and she wants to make it more functional, what would increasing the surface area of that structure do?
Choices:
increase functioning
decrease functioning
Answer: A
Background: Because these isotopes decay more slowly, they can be used to date much older specimens.

Question: Ron is trying to figure out how old some isotopes are. The isotopes are decaying very slowly, so they are likely specimens that are
Choices:
older
younger
Answer: A
Background: Water flowing over a steeper slope moves faster and causes more erosion.

Question: Mona is a scientist studying erosion at a university. She is observing a river. If she starts taking erosion measurements at the mouth of the river and moves up to the head of the river, what will she find happens as the slope gets less steep?
Choices:
erosion decreases
erosion increases
Answer: A
Background: Increasing the number of resistors in a series circuit increases the overall resistance of the circuit.

Question: Mike was wiring up a new circuit to test it out. He observed that the more resistors he removed from the circuit. the overall resistance level
Choices:
Increased
Decreased
Answer: B
Background: Increased resource use generally means more waste; electronic waste from developed nations is a growing problem in the developing world.

Question: More waste being noted indicates _____ use of resources.
Choices:
more
less
Answer: A
Background: Exhaling, or breathing out, decreases the size of the chest, which increases air pressure inside the lungs.

Question: When people breathe in their chest becomes
Choices:
larger
smaller
Answer: A
Background: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.

Question: Mike is watching how particles of reactants function, and sees that they are crowded very close. Considering that the concentration of them is very high, the chance of them colliding together is
Choices:
high
low
Answer: A
Background: Therefore, increasing the surface area of solid reactants increases the reaction rate.

Question: Katie is looking at solid reactants, and is wondering how they will react. The reaction rate is decreased in surface areas which are
Choices:
larger
smaller
Answer: B
Background: The closer to pH 14, the more strongly basic the solution.

Question: Evan was drinking water with pH 7. He also had bleach in his house of pH 12. Which liquid is less basic?
Choices:
water
bleach
Answer: A
Background: Gravity is a pull which all matter exerts on all other matter, the more mass, the stronger the pull.

Question: John was watching objects fall from the sky in the simulator. He observed that items with less mass will be pulled by gravity at a rate that is
Choices:
Stronger
Weaker
Answer: B
Background: Natural selection is the process by which living things with beneficial traits produce more offspring, so their traits become more common over time.

Question: Milo breeds cats for a living. If he wants his cats to reduce a specific trait, what should he do to the amount of offspring each cat produces?
Choices:
decrease
increase
Answer: A
Background: If the gas is heated, the particles will move faster as they gain more energy.

Question: Bob cools down some gas at the plant. When he does this, the gas particles move slower and
Choices:
gain energy
lose energy.
Answer: B
Background: For example, more people on the Earth means more people contributing to global warming and pollution.

Question: Angel traveled to New York, and experienced _____ pollution.
Choices:
more
less
Answer: A
Background: More recently, the death rate has fallen because of the availability of more food and medical advances.

Question: If Mona lives in a country with poor access to food and another country begins reducing food supplies of her country, what happens to the death rate in Mona's country?
Choices:
increases
decreases
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: If Mary is building a rocket and she wants it to fly as high as possible, what should she do to the mass of the rocket?
Choices:
increase it
decrease it
Answer: B
Background: Compared with a less powerful device, a more powerful device can either do more work in the same time or do the same work in less time.

Question: Robin has an old computer that runs slowly, and Bryan has a powerful new computer. When working on the same task, the computer that will finish the task first is
Choices:
Robin's
Bryan's
Answer: B
Background: The higher up a food chain that humans eat, the greater the levels of toxic metals they take in.

Question: Sarah ate a piece of shark meat for dinner, Sarah's levels of toxic metals have
Choices:
decreased.
increased or
Answer: B
Background: The higher the temperature, the more energy the particles have and the faster they will move and diffuse.

Question: Tina goes to the cold baths. Her temperature decreases, so the particles in her body will move
Choices:
slower
faster
Answer: A
Background: Air in the troposphere is warmer closer to Earths surface.

Question: Micah is leaving the atmosphere, leaving in a rocket from the Earth's surface.As he's passing through the troposphere, the air is going to get
Choices:
warmer
colder
Answer: B
Background: Energy levels farther from the nucleus of an atom have more orbitals.

Question: When measuring atoms the further from the nucleus you get you have
Choices:
less orbitals
more orbitals
Answer: B
Background: The more curved the surface of a lens is, the more it refracts light.

Question: If a lens loses its curvature, it will refract _____ light.
Choices:
more
less
Answer: B
Background: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.

Question: If Jim wants to raise the pH of his solution he should do what to the concentration of hydrogen ions inside of it?
Choices:
decrease
increase
Answer: A
Background: The more mass a moving object has or the faster its moving, the greater its momentum.

Question: A heavy boulder begins rolling down a hill and a beach ball rolls down alongside it. Which object will have less momentum as it rolls?
Choices:
boulder
beach ball
Answer: B
Background: This means that as wavelengths get shorter, more waves move past a particular spot in the same amount of time.

Question: Wavelengths that are shorter will be
Choices:
faster
slower
Answer: A
Background: In an inverse relationship, when one variable increases, the other variable decreases.

Question: Dan wants lunch, and Dan has some money. In order to get a lunch, Dan's money will
Choices:
increase
decrease
Answer: B
Background: When there are more sunspots the Sun is more active and there are more solar storms and more of the Sun's energy reaches the Earth.

Question: When astronomers noticed a doubling of Sun spot activity, did they predict that the Earth's temperature would
Choices:
increase
decrease?
Answer: A
Background: The more cylinders a car engine has, the more powerful its engine can be.

Question: Mona is designing a car in a factory. If she decides to add more cylinders to the car's engine, what happens to the power that engine can output?
Choices:
increased
decreased
Answer: A
Background: Warming up exercises increases the blood flow to the muscles and increases the heart rate.

Question: When April went for a run, she noticed that her heart was beating
Choices:
faster
slower
Answer: A
Background: Different types of rocks weather at different rates. More resistant types of rocks will remain longer.

Question: When Dan went to the beach, he found rocks that had been eroded. Some rocks were hardly weathered though, so those must have a resistance that is
Choices:
higher
lower
Answer: A
Background: As the population increases, the food supply, or the supply of another necessary resource, may decrease.

Question: If the population of India were to decrease, their people should expect to have _____ food available.
Choices:
more
less
Answer: A
Background: Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature.

Question: If Milo adds more carbon atoms to his alkane while working in his science lab, what happens to the melting point of that alkane?
Choices:
increases
decreases
Answer: A
Background: Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.

Question: Air pressure inside the lungs will _____ when one exhales out deeply.
Choices:
increase
decrease
Answer: A
Background: A: As the car approaches the radar gun, the reflected microwaves get bunched up in front of the car. Therefore, the waves the receiver detects have a higher frequency than they would if they were being reflected from a stationary object. The faster the car is moving, the greater the increase in the frequency of the waves.

Question: Tina is speeding on the highway, and a cop is sat on the road with a radar gun to see who to pull over. The cop's gun begins to detect a low frequency, with waves reflected being bunched up. The car was going
Choices:
faster
slower
Answer: B
Background: At higher elevations, there is less air to press on a given area.

Question: When we get to the bottom of a mountain the air is
Choices:
more dense
less dense
Answer: A
Background: The more curved the surface of a lens is, the more it refracts light.

Question: Jeff built a lens with the lowest refraction possible. The lens is likely _____ curved.
Choices:
very
not
Answer: B
Background: Objects with greater mass have a stronger force of gravity between them.

Question: A planet that is larger has
Choices:
less gravity
more gravity
Answer: B
Background: If we have two materials with the same volume, the material with a higher mass will be more dense.

Question: Tanya has a substance with mass 10kg. Logan has a substance with mass 5kg. If both substances are the same size, who has the less dense substance.
Choices:
Tanya
Logan
Answer: B
Background: Light-skinned people get sunburned more quickly than people with darker skin.

Question: If Milo has dark skin and Jerry has light skin, which person will sunburn more easily?
Choices:
Milo
Jerry
Answer: B
Background: More recently, the death rate has fallen because of the availability of more food and medical advances.

Question: If Mona lives in a country with poor access to food and another country begins providing extra food to her country, what happens to the death rate in Mona's country?
Choices:
increases
decreases
Answer: B
Background: When particles move more quickly, temperature is higher and an object feels warmer.

Question: When we move around very little we feel
Choices:
warmer
colder
Answer: B
Background: As the liquid particles lose energy, their movement slows down even more. As their movements become slower and slower, the attractive forces between become stronger.

Question: Quent reduces the energy of a liquid. He notices that the particles in the liquid
Choices:
slow down
speed up
Answer: A
Background: Temperature affects the rate at which photosynthesis, cellular respiration and decomposition take place. The rate of reaction increases with increasing temperature and decreases at lower temperatures.

Question: john was watching the rate of reactions going on in some plants. he noticed that the rate increased when the temperatures
Choices:
increased
decreased
Answer: A
Background: The stronger the winds are blowing, the larger the waves are and the more energy they have.

Question: Evan surfs the waves on a day when it is windy, and then he goes back the next day when there is no wind. Which waves likely had less energy?
Choices:
windy
no wind
Answer: B
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 light skin. Her skin likely absorbs _____ vitamin D than a dark-skinned person.
Choices:
more
less
Answer: A
Background: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.

Question: If Mona is filling a balloon with helium and she adds more gas to it, what happens to the likelihood that the helium particles will collide with each other?
Choices:
more likely
less likely
Answer: A
Background: Countries with more industry produce more hazardous wastes than those with little industry.

Question: It is likely that China produces more hazardous waste than Canada because it has
Choices:
less industries.
more or
Answer: B
Background: Areas near the equator are warmer than areas near the poles because they receive more direct sunlight.

Question: Sandra wants to go on vacation, and would like to go somewhere warm. Sandra will likely choose a place
Choices:
near the equator
near the poles
Answer: A
Background: The closer the charged objects are, the stronger the electrostatic force.

Question: When two batteries are placed further apart, John can tell that the electrostatic force is
Choices:
more
less
Answer: B
Background: For a given medium, sound waves travel more slowly at lower temperatures.

Question: If Milo is listening to the radio in his room and the room gets hotter, what happens to the speed of the sound waves generated by the radio?
Choices:
increase
decrease
Answer: A
Background: For a given medium such as air, sound has a slower speed at lower temperatures.

Question: If Mary is blowing an air horn underwater and she raises the temperature of the water, what will happen to the speed of the sound waves generated by the air horn?
Choices:
increase
decrease
Answer: A
Background: Faster-moving water has more energy.

Question: If Jim increased the speed of water flowing out of his bathroom tap, what would happen to the amount of energy being transferred by the water?
Choices:
would increase
would decrease
Answer: A
Background: As the amount of water increases, the melting point of rock decreases.

Question: Richard dropped two identical rocks, one into a puddle, and the other into a swimming pool. After dropping both rocks, the rock dropped into the puddle had
Choices:
a higher melting point than the other rock
a lower melting point than the other rock
Answer: A
Background: The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.

Question: Bryan was tasked with categorizing various fossils that the archeology team dug up. He knew they found some in rock layers near the surface and others in layers much farther below the ground. Which should he categorize as the younger ones?
Choices:
near surface fossils
farther down fossils
Answer: A
Background: Objects that are closer together have a stronger force of gravity between them.

Question: Ferb and Honey are walking towards each other. What is true about the force of gravity between them as the distance between them decreases?
Choices:
it increases
it decreases
Answer: A
Background: Lighter, more streamlined vehicles need less energy.

Question: Jim is designing a new car and playing around with different materials. If he were to decrease the weight of the vehicle, what would happen to the fuel efficiency of that vehicle? It would
Choices:
increase
decrease
Answer: A
Background: For a given medium, sound waves travel more slowly at lower temperatures.

Question: Eric moved to Alaska from Arizona. The lower temperatures overall mean that sound travels
Choices:
faster
slower
Answer: B
Background: The stratosphere contains the ozone layer, the temperatures increase as altitude increases.

Question: If Mona is flying her plane in the stratosphere on a journey and she moves higher up into the stratosphere, what happens to the temperatures her plane experiences?
Choices:
they increase
they decrease
Answer: A
Background: Light-skinned people get sunburned more quickly than people with darker skin.

Question: A person that is African American will get _____ than a white person at the beach.
Choices:
less sunburned
more sunburned
Answer: A
Background: Water near shore generally has more dissolved nutrients than water farther from shore.

Question: Eric is swimming near shore. Tina is 100 meters out in the water. The water near _____ has fewer nutrients.
Choices:
Eric
Tina
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: Asa is running in a race and his body temperature decreases. His skin's blood vessels _____ in diameter.
Choices:
increase
decrease
Answer: B
Background: With fewer trees, the air is drier and droughts are more common.

Question: If Mona is a logger and she begins cutting down a forest full of trees, how will that affect the likelihood of a drought occurring?
Choices:
decrease
increase
Answer: B
Background: As the Universe expands, galaxies move further and further apart.

Question: If Mona is studying the galaxy and she notices that the universe is expanding less then it used to, what does that mean is happening to the galaxies in the universe?
Choices:
moving closer together
moving further apart
Answer: A
Background: In the mesosphere, temperature decreases as altitude increases.

Question: Sinking lower in the mesosphere, we encounter _____ temperatures.
Choices:
higher
lower
Answer: A
Background: Thicker wires offer less resistance.

Question: Jill had two wires in her lab, one was twice the thickness of the other and she measured the resistance of each. She saw that the _____ one showed less resistance.
Choices:
thicker
thinner
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: Karen is feeling very warm, and starts to sweat. Her blood flow is increased, likely because the day is
Choices:
hot
cold
Answer: A
Background: The development of better missiles fostered better rocket technologies.

Question: Milo's country spends low energy developing better missiles. This means their rocket technologies have
Choices:
increased
decreased
Answer: B
Background: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.

Question: DJ has a solution that he removes particles from. The solution is now a _____ concentration.
Choices:
higher
lower
Answer: B
Background: Larger telescopes can collect more light and see finer details than smaller telescopes.

Question: One reason scientists sometimes use smaller telescopes for bright objects is because they collect
Choices:
more light
less light
Answer: B
Background: This means that as wavelengths get shorter, more waves move past a particular spot in the same amount of time.

Question: Sue watches waves of different colored light travel past her with a spectrometer. The shorter wavelengths cause _____ waves to travel past her than the longer wavelengths.
Choices:
more
fewer
Answer: A
Background: Exercising muscles increases their size, and bigger muscles have greater strength.

Question: Brad wants to go to the gym less regularly, so that his muscles will get smaller. Another aspect of having smaller muscles means that Brad will likely be
Choices:
stronger
weaker
Answer: B
Background: In refraction of light, the greater the change in speed, the more light bends.

Question: John was looking at a refractive index and observing the light. The less speed the light had, it would bend
Choices:
More
Less
Answer: B
Background: If there are more greenhouse gases in the atmosphere, more ultraviolet radiation will be trapped and the Earth will heat up.

Question: Billionaire Joey McMoneystuffs added 3 new jets to his already large fleet of personal aircraft. One day, he decided not to have them race each other, burning no fuel and adding no greenhouse gases to the atmosphere. The Earth's heat index will
Choices:
increase
decrease
Answer: B
Background: If the gas is cooled, the particles will move more slowly, because they will have less energy.

Question: If Jim increases the amount of energy inside of a gas, the particles in the gas will move
Choices:
more
less
Answer: A
Background: The closer to pH 14, the more strongly basic the solution.

Question: John was working on a chemistry project. He found that the closer to ph 14 the substance was, the substance's basicness became
Choices:
Less
Greater
Answer: B
Background: In the thermosphere, temperatures increase as altitude increases.

Question: Going higher into the thermosphere will result in finding _____ temperatures.
Choices:
higher
lower
Answer: A
Background: In erosion, a slower moving stream will only carry smaller particles.

Question: If a stream begins moving slower, what will happen to the size of the particles it carries?
Choices:
get bigger
get smaller
Answer: B
Background: Thicker wires offer less resistance.

Question: A small wire can carry current a long ways because it has _____ resistance
Choices:
less
more
Answer: B
Background: Because richer nations use more fossil fuels, they also cause more air pollution and global warming than poorer nations do.

Question: Chris is studying two countries. He finds that China has twice as many factories putting out fossil fuels into the air than the United States. Based on this information, the factories in _____ are causing more air pollution.
Choices:
United States
China
Answer: B
Background: The thinner the wire, the more resistance it offers.

Question: Shane wants to get the most resistance out of his wire for his computer, so he gets a wire that is
Choices:
thicker
thinner
Answer: B
Background: At higher temperatures, particles of reactants have more energy, so they move faster. They are more likely to bump into one another and to collide with greater force.

Question: If Mona is comparing two different reactants to use for starting her fire and she realizes that one reactant has a higher temperature then the other, what does that tell her about the amount of energy it contains?
Choices:
higher
lower
Answer: A
Background: As the distance between the objects increases, the force of gravitational attraction decreases.

Question: If a car and a truck drive closer to each other, what happens to the gravitational attraction between the two vehicles?
Choices:
increases
decreases
Answer: A
Background: Increasing the number of resistors in a series circuit increases the overall resistance of the circuit.

Question: Greta has 15 resistors in series on her circuit, while Evan has 2 similar resistors in series on his circuit. Whose circuit has the greatest resistance?
Choices:
Greta
Evan
Answer: A
Background: The farther the sound waves travel away from the source, the more spread out their energy becomes.

Question: As you monitor sound waves closer to a speaker they become
Choices:
louder
quieter
Answer: A
Background: Bigger atoms have more electrons.

Question: Mona is comparing the size of two atoms in her science lab. If she notices that one atom is larger then the other, what does that tell her about the number of electrons it has?
Choices:
more
less
Answer: A
Background: However, the melanocytes of people with darker skin produce more melanin.

Question: Eric has dark skin and Rita has light skin. Who produces more melanin?
Choices:
Eric
Rita
Answer: A
Background: Different types of rocks weather at different rates. More resistant types of rocks will remain longer.

Question: RJ diamond is more resistant to weathering while Tony has some sandstone which is less resistant to weathering. Whose rock will likely last longer?
Choices:
RJ's
Tony's
Answer: A
Background: A stronger acid produces a greater concentration of ions than a weaker acid.

Question: Milo is measuring acidity levels in his drink fridge. If his sprite is less acidic then his coke, which item has the greater concentration of ions?
Choices:
coke
sprite
Answer: A
Background: Better farming techniques and machines increased the food supply and the distribution of food.

Question: As farming techniques are discovered, there are _____ people that starve and go hungry.
Choices:
more
less
Answer: B
Background: The farther apart you move your hands, the stronger the force of the rubber band pulling your hands together.

Question: Dan wanted to flick Carlos hard with a rubber band. To flick him the hardest, Dan needs to move his hands
Choices:
closer
further away
Answer: B
Background: The farther apart you move your hands, the stronger the force of the rubber band pulling your hands together.

Question: Alan has a rubber band on his hands. He pushes his hands together and the rubber bands force
Choices:
increases
decreases
Answer: B
Background: The longer the resistor, the more resistance it has.

Question: Chris needs a resistor for a science experiment he is conducting in class. He needs it to have the greatest resistance possible. If the second resistor is twice as long as the first one, then the _____ will have the greater resistance.
Choices:
first one
second one
Answer: B
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: When someone gets smaller what happens to their body functions?
Choices:
increases
decreases
Answer: B
Background: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.

Question: If someone has a larger than average physical heart then it will beat _____ in order to pump blood.
Choices:
more
less
Answer: B
Background: A sunscreen with a higher SPF value protects the skin longer.

Question: Matt started a job where he will be outside a lot longer. In order to protect his skin during this longer period of sun exposure, he should use a
Choices:
higher SPF sunscreen
lower SPF sunscreen.
Answer: A
Background: The higher the temperature, the more energy the particles have and the faster they will move and diffuse.

Question: By filling a kettle with water and placing it in a freezer turned to low, will the motion of the water molecules in the kettle
Choices:
increase in speed
decrease in speed.
Answer: B
Background: For example, more people on the Earth means more people contributing to global warming and pollution.

Question: When there are more people driving cars the rate of global warming
Choices:
increases
decreases
Answer: A
Background: Bigger waves have more energy.

Question: Milo is surfing at the beach on his day off. He notices that the waves are getting bigger and bigger. What is happening to the energy those waves are producing?
Choices:
decrease
increase
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 weaker that the acid was, the concentration of Ions became
Choices:
Larger
Smaller
Answer: B
Background: If there are more greenhouse gases in the atmosphere, more ultraviolet radiation will be trapped and the Earth will heat up.

Question: Billionaire Joey McMoneystuffs added 3 new jets to his already large fleet of personal aircraft. One day, he decided to have them race each other, burning excess fuel and adding greenhouse gases to the atmosphere. When the resulting ultraviolet radiation becomes trapped, the Earth's heat index will
Choices:
increase
decrease
Answer: A
Background: As greenhouse gases increase, changes will be more extreme.

Question: If the people in Mary's country start to create less greenhouse gases, what will happen to the possibility that changes may occur?
Choices:
increase
decrease
Answer: B
Background: More advanced farming practices allowed a single farmer to grow food for many more people.

Question: Farmer Bill got a new machine to sift his wheat. This machine allows him to grow _____ food.
Choices:
more
less
Answer: A
Background: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.

Question: A low-frequency wave will have _____ energy than a high-frequency wave.
Choices:
more
less
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 faster, so he will speak in a room that is
Choices:
colder
warmer
Answer: B
Background: The thinner the wire, the more resistance it offers.

Question: A thicker wire will give _____ resistance.
Choices:
more
less
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 farther from the shores had an amount of nutrients that was
Choices:
Greater
Lesser
Answer: B
Background: In refraction of light, the greater the change in speed, the more light bends.

Question: When light slows down it is more likely to
Choices:
stay straight
bend
Answer: A
Background: As the water is pumped out, the water table slowly falls, requiring wells to be dug deeper, which takes more money and energy.

Question: Dilbert had a well that he used since he was a child that dried up. This likely occurred because the water table
Choices:
rose
dropped
Answer: B
Background: As the distance between the objects increases the magnetic force of attraction decreases.

Question: If two magnetic objects move apart, they will cause the magnetic force of attraction to
Choices:
increase
decrease
Answer: B
Background: The trade-off when the threads are closer together, is that more turns of the screw or bolt are needed to do the job because the distance over which the input force must be applied is greater.

Question: If Jim is screwing in two bolts and the first one has threads that are close together while the second one has threads that are far apart, which one must he apply less force to?
Choices:
first bolt
second bolt
Answer: B
Background: As the Universe expands, galaxies move further and further apart.

Question: A scientist sees that some galaxies are closer together than before, so they know that the universe's expansion is
Choices:
less
more
Answer: A
Background: More UV rays increase skin cancer rates.

Question: Eric went out into the sun from his room. The sun has more UV rays than the light in his room. His chance of skin cancer likely goes
Choices:
up
down
Answer: A
Background: As the amount of water increases, the melting point of rock decreases.

Question: Rocks that have a lot of water in them have a
Choices:
high melting point
low melting point
Answer: B
Background: The more mass a moving object has or the faster its moving, the greater its momentum.

Question: Mona loves to see how far she can slide things. If a basketball has more mass then a baseball and Mona decides to slide both items, which will have less momentum?
Choices:
baseball
basketball
Answer: A
Background: The more energy the particles in matter have, the faster and more strongly they vibrate.

Question: Don wants to make sure that his particles will move slower, so he will make sure the energy they have is
Choices:
more
less
Answer: B
Background: Less photosynthesis means that plants and phytoplankton produce less food.

Question: If Mona owns a greenhouse and she decides to open r the top up to increase sunlight, what happens to her plant's ability to make food?
Choices:
increases
decreases
Answer: A
Background: Bigger stars produce more energy, so their surfaces are hotter.

Question: Compared to the Sun, which is an average sized star, would VY Canis Majoris, the largest known star, produce
Choices:
more energy
less energy?
Answer: A
Background: The folds present in the membrane increase the surface area allowing more ribosomes to be present on the ER, thereby allowing greater protein production.

Question: An increase in protein production indicates _____ ribosomes on the ER.
Choices:
more
less
Answer: A
Background: Water near shore generally has more dissolved nutrients than water farther from shore.

Question: If water is close to a source of nutrients it will have
Choices:
few nutrients
more nutrients
Answer: B
Background: The longer the exposure, the more light that the telescope can gather to make the image.

Question: If Mona is an astronomer and she is looking through a telescope, what happens to the amount of light gathered by the telescope if she shortens the exposure?
Choices:
increases
decreases
Answer: B
Background: The stronger the winds are blowing, the larger the waves are and the more energy they have.

Question: Waves _____ when winds blow harder.
Choices:
increase
decrease
Answer: A
Background: Objects with greater mass have a stronger force of gravity.

Question: If Mona is comparing an apple and an orange and she determines that the apple has more mass then the orange, which one has a weaker force of gravity?
Choices:
apple
orange
Answer: B
Background: Areas near the equator are warmer than areas near the poles because they receive more direct sunlight.

Question: Sandra wants to go on vacation, and would like to go somewhere cold. Sandra will likely choose a place
Choices:
near the equator
near the poles
Answer: B
Background: The trade-off when the threads are closer together, is that more turns of the screw or bolt are needed to do the job because the distance over which the input force must be applied is greater.

Question: Harry was installing a TV mount. He drills into the wall with a screw that has 30 threads. If he used a screw of the same size with 20 threads, it would take _____ turns to put it in.
Choices:
fewer
more
Answer: A
Background: Less photosynthesis means that plants and phytoplankton produce less food.

Question: Jean has two plants, one with leaves, and one that has had the leaves stripped from it. The plant with leaves will produce food in amounts that are
Choices:
smaller
larger
Answer: B
Background: The planets further from the Sun will have bigger orbits, and therefore take longer to revolve around the Sun.

Question: If Jupiter has a bigger orbit then Mercury, which planet will take longer to revolve around the Sun?
Choices:
Jupiter
Mercury
Answer: A
Background: The smaller a population is, the more allele frequencies may drift.

Question: A family that is very small, compared to one that is enormous, will have allele differences that are
Choices:
smaller
greater
Answer: A
Background: The water table is higher when there is a lot of rain and lower when the weather is dry.

Question: John was watching the effects of weather on the groundwater in his area. He observed that as the amount of rain increased, the level of the water table was
Choices:
Higher
Lower
Answer: A
Background: For bases we can state the folllowing: The higher the pH of a substance, the more basic it is.

Question: If Milo is adjusting the pH of his pool and increases it, what happens to how basic the solution in the pool is?
Choices:
increases
decreases
Answer: A
Background: Water density increases as salinity and pressure increase, or as temperature decreases.

Question: By pouring a pound of salt into a bucket of fresh water, could you cause the density of the water to
Choices:
increase
decrease?
Answer: A
Background: When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.

Question: Sean is trying to see how fast the water molecules are moving in a container of water. He observes that the molecules are moving very slowly, so the temperature must be
Choices:
cool
warm
Answer: A
Background: The more mass a moving object has or the faster its moving, the greater its momentum.

Question: A heavy boulder begins rolling down a hill and a beach ball rolls down alongside it. Which object will have more momentum as it rolls?
Choices:
boulder
beach ball
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 close to each other are
Choices:
weaker
stronger
Answer: B
Background: This is also called diffusion, and the process is much faster in gases than in liquids, because the particles in gases are further apart.

Question: Will induces diffusion in a gas and a liquid. The liquid likely diffuses much
Choices:
faster
slower
Answer: B
Background: Higher frequency waves have greater energy.

Question: If Jim changes his radio transmitter to a lower frequency, the energy produced is
Choices:
greater
smaller
Answer: B
Background: With higher levels of dissolved carbon dioxide in ocean water, the water becomes more acidic.

Question: If high levels of carbon dioxide are absorbed by the oceans, would shellfish that can be easily killed by acidic water be
Choices:
more likely to die
less likely to die?
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 approach the dock. While the ship is near him, it is massive. However, as the ship comes closer, it begins to look
Choices:
bigger
smaller
Answer: A
Background: Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.

Question: Rich breathed out. When he breathes _____ his chest seems larger.
Choices:
in
out
Answer: B
Background: To reduce friction, oil is added to the engine.

Question: Jeff should add _____ to his engine to reduce the friction in its processes.
Choices:
oil
gas
Answer: A
Background: People in the richer nations of the world use far more energy, especially energy from fossil fuels, than people in the poorer nations do.

Question: Will was farming in a poor country when he noticed he his energy consumption was high. Despite this, his consumption of energy is likely much _____ than that of a rich country.
Choices:
lesser
greater
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: Milo's risk of developing cardiovascular disease are greater when he is
Choices:
older
younger
Answer: A
Background: The faster, longer, and farther the wind blows, the bigger the waves are.

Question: Mona is sitting at the beach watching the waves. If the wind starts blowing slower, what will happen to the size of the waves?
Choices:
increase
decrease
Answer: B
Background: The particles in matter are always moving. The more energy they have, the faster they move.

Question: If there are two containers of particles, the one that has the most energy will move
Choices:
slower.
faster
Answer: B
Background: The voice becomes deeper as the larynx in the throat grows larger.

Question: Eric underwent surgery to increase the size of his larynx. His voice is now
Choices:
higher
deeper
Answer: B
Background: With a higher concentration of hydrogen ions, a solution is more acidic but has a lower pH.

Question: If you found something with very few hydrogen ions it would be
Choices:
basic
acidic
Answer: A
Background: If the gas is cooled, the particles will move more slowly, because they will have less energy.

Question: As gas in the plant is cooling down, Gabe notices that the particles are moving more
Choices:
slowly
faster.
Answer: B
Background: The closer the charged objects are, the stronger the electrostatic force.

Question: Robby noticed a weak electrostatic force between two charged objects. He wanted to increase the strength of this force. So how should he position them?
Choices:
Closer together
Farther apart
Answer: A
Background: A: The more carbon atoms there are, the greater the number of possible arrangements of carbon atoms.

Question: When we have a lot of blocks we can make
Choices:
many arrangements
few arrangements
Answer: A
Background: A wave caused by a disturbance with more energy has greater amplitude.

Question: Kelly drops a 5kg weight and a 10kg weight in two similarly sized buckets. If this creates a wave, the wave with less amplitude was caused by the
Choices:
5kg
10kg
Answer: A
Background: This means that as wavelengths get shorter, more waves move past a particular spot in the same amount of time.

Question: Sue watches waves of different colored light travel past her with a spectrometer. The longer wavelengths cause _____ waves to travel past her than the longer wavelengths.
Choices:
more
fewer
Answer: B
Background: The larger the animal, the heavier the exoskeleton, making movement more difficult.

Question: A puppy, compared to a elephant, is a smaller size, and therefore the weight of the puppy, compared to the elephant, is
Choices:
greater
lesser
Answer: B
Background: The particles in matter are always moving. The more energy they have, the faster they move.

Question: When a child has a lot of energy they will move around
Choices:
slower
faster
Answer: B
Background: The more curved the surface of a lens is, the more it refracts light.

Question: Compared to a large flat sheet of glass, would the curved lenses of a pair of binoculars refract
Choices:
less light?
more light
Answer: B
Background: Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere.

Question: If Jim moves his telescope to a location with less air above it, what will happen to the amount of interference from the atmosphere?
Choices:
increase
decrease
Answer: B
Background: Solar power is expensive, but as demand increases technology improves and costs decrease.

Question: In the past, solar power was _____ than it is today.
Choices:
more expensive
less expensive
Answer: A