Heat Transfer - conduction, convection, radiation

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What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one through molecular collisions.

Tags

NGSS.MS-PS3-3

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What is convection?

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

Tags

NGSS.MS-ESS2-6

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What is radiation?

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Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through empty space.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Front

Example of conduction in everyday life?

Back

An example of conduction is when a metal spoon gets hot after being placed in a hot cup of coffee.

Tags

NGSS.MS-PS3-3

Front

Example of convection in everyday life?

Back

An example of convection is warm air rising from a heater and cooler air moving in to take its place, creating a circulation of air.

Tags

NGSS.MS-ESS2-6

Front

Example of radiation in everyday life?

Back

An example of radiation is feeling the warmth of the sun on your skin or the heat from a fireplace without direct contact.

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What is the primary mechanism of heat transfer in liquids?

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Convection is the primary mechanism of heat transfer in liquids.

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What happens to air when it is heated?

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When air is heated, it becomes less dense and rises, while cooler, denser air moves in to replace it.

Tags

NGSS.MS-ESS2-5

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What is thermal insulation?

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Thermal insulation is a material or method used to reduce the transfer of heat between objects, helping to maintain temperature.

Tags

NGSS.MS-PS3-3

Front

How does a thermos keep drinks hot or cold?

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A thermos uses insulation to minimize heat transfer by conduction, convection, and radiation, keeping drinks at their desired temperature.

Tags

NGSS.MS-PS3-3