Unit 7 Test Review

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What is Conduction?

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Conduction is the transfer of heat through direct contact between materials. For example, when a metal spoon is placed in a hot pot, heat transfers from the pot to the spoon.

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What is Convection?

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Convection is the transfer of heat through the movement of fluids (liquids or gases). For example, boiling water circulates as hot water rises and cooler water sinks.

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What is Radiation?

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Radiation is the transfer of heat in the form of electromagnetic waves. For example, the warmth felt from sunlight is due to radiation.

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How does heat transfer from an area of high temperature to an area of low temperature?

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Heat naturally flows from areas of high temperature to areas of low temperature until thermal equilibrium is reached.

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What is an example of Conduction in everyday life?

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An example of conduction is when a steak is heated by touching a hot pan.

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What is an example of Convection in everyday life?

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An example of convection is how wind transfers heat, as warm air rises and cool air moves in to replace it.

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What is an example of Radiation in everyday life?

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An example of radiation is feeling the warmth of the sun on your skin on a cold day.

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What happens to the temperature of a substance when it absorbs heat?

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When a substance absorbs heat, its temperature generally increases.

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What happens to the temperature of a substance when it loses heat?

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When a substance loses heat, its temperature generally decreases.

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What is thermal equilibrium?

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Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature and no heat flows between them.