Conduction Convection Radiation

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What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. Heat moves from the hotter object to the cooler one.

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NGSS.MS-PS3-3

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What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). Warm fluid rises while cooler fluid sinks, creating a circulation pattern.

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NGSS.MS-ESS2-6

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What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium and can occur in a vacuum.

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NGSS.MS-PS4-1

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Front

How does conduction occur in solids?

Back

In solids, conduction occurs as vibrating particles collide with neighboring particles, transferring energy.

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What is an example of conduction?

Back

An example of conduction is a metal spoon getting hot when placed in a pot of boiling water.

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NGSS.MS-PS3-3

Front

What is an example of convection?

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An example of convection is warm air rising above a heater, causing cooler air to move in and create a circulation.

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What is an example of radiation?

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An example of radiation is feeling the warmth of the sun on your skin, even when standing in the shade.

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NGSS.MS-PS4-2

Front

What happens to air when it is heated?

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When air is heated, it expands, becomes less dense, and rises.

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NGSS.MS-PS1-4

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What happens to air when it cools?

Back

When air cools, it contracts, becomes denser, and sinks.

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NGSS.MS-ESS2-5

NGSS.MS-PS1-4

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Front

Can conduction occur in a vacuum?

Back

No, conduction cannot occur in a vacuum because there are no particles to transfer heat.