Unit 3 Heat Transfer Study Guide

Front

Why did the waters mix and turn green in #1 but not in #2?

Back

Cold blue water molecules move less than hot yellow water molecules.

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Front

What evidence supports the claim that potential energy is converted to kinetic energy in a trampoline system?

Back

The potential energy of the stretched springs is transformed to the kinetic energy of the person thrown upward.

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Front

What is thermal energy?

Back

It is the total potential and kinetic energy of the molecules that make up a substance, also called internal energy.

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Front

Thermal energy

Back

It is the total potential and kinetic energy of the molecules that make up a substance, also called internal energy.

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Front

Which roller coaster design will produce the most kinetic energy and why?

Back

This roller coaster because it has the greatest amount of potential energy due to the height of the roller coaster.

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Front

Predict the kinetic energy of a 20 kg ball rolling at a velocity of 10 m/s compared to a 10 kg ball moving at the same velocity.

Back

It will be 400 units that of the 10 kg ball moving at the same velocity.

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Front

Term for energy stored in an object

Back

potential energy

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Front

Does the correct sequence of energy transformations in this diagram support Maria’s claim?

Back

Yes, because chemical energy in food is being transformed into mechanical energy of motion, thermal energy, and sound energy.

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Front

Predict the outcome of a heat transfer experiment with dark soil, light soil, and water under a heating lamp for 10 minutes.

Back

The dark soil will heat up the fastest as the heat transfers from the lamp to the surface of the soil via radiation and then the soil will absorb the heat through convection.

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Front

Is Victor's statement correct? Why or why not?

Back

No, the electrical energy is transformed to light energy and heat energy.

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