Given the fact that:  The pupil automatically gets bigger or smaller to let more or less light in as needed.  Answer the question:   When it is night time the pupils in our eyes are more or less open than normal?
more
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Given the fact that:  If the gas is heated, the particles will move faster as they gain more energy.  Answer the question:   If John cools a gas in his bunsen burner, what would happen to the gas particles they would move faster or they would move slower?
they would move slower
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Given the fact that:  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.  Answer the 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 cooler or warmer?
cooler
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Given the fact that:  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.  Answer the question:   Mary melts a 1 pound chocolate bar and 1 pound of chocolate chips in two pots. Which melts first bar or chips?

chips
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