Thermal Energy and Energy Transfer Review

What is insulation?

• A material used to prevent heat loss or gain

• A type of electrical conductor

• A method of sound amplification

• A process of chemical reaction

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According to the particle kinetic molecular theory of matter, what do particles of matter do?

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What happens to the average molecular kinetic energy when something gets colder?

• The average molecular kinetic energy decreases.

• The average molecular kinetic energy increases.

• The average molecular kinetic energy remains the same.

• The average molecular kinetic energy fluctuates randomly.

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What happens to molecules when heat is added?

• They move faster and spread apart.

• They stop moving completely.

• They become smaller and denser.

• They change into different elements.

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What does velocity refer to?

• Velocity refers to the rate at which an object changes its position. It is a vector quantity, which means it has both magnitude and direction.

• Velocity refers to the amount of space an object occupies.

• Velocity refers to the force applied to an object to move it.

• Velocity refers to the time taken for an object to stop moving.

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What happens to molecules in hot water as the velocity decreases?

• The molecules move closer together.

• The molecules move further apart.

• The molecules start to vibrate more.

• The molecules remain stationary.

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What does a rise in air temperature mean for the average velocity of air molecules?

• The average velocity of air molecules increases.

• The average velocity of air molecules decreases.

• The average velocity of air molecules remains the same.

• The average velocity of air molecules becomes zero.

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Which type of surfaces absorb light and heat better, dark-color or light-color?

• Dark-color surfaces

• Light-color surfaces

What is radiation in terms of heat transfer?

• The transfer of heat through electromagnetic waves.

• The transfer of heat through direct contact.

• The transfer of heat through a fluid medium.

• The transfer of heat through conduction.

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What materials are considered conductors?

• Metals

• Plastics

• Wood

• Rubber