Heat Transfer

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What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

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NGSS.MS-PS1-4

NGSS.MS-PS3-3

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What are the three main types of heat transfer?

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The three main types of heat transfer are conduction, convection, and radiation.

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NGSS.MS-PS3-3

Front

Define conduction.

Back

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

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NGSS.MS-PS3-3

Front

Define convection.

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Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

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NGSS.MS-ESS2-6

NGSS.MS-PS3-4

Front

Define radiation.

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Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, and does not require a medium.

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NGSS.HS-PS4-1

NGSS.HS-PS4-3

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What causes winds?

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Winds are caused by the uneven heating of the Earth's surface by the sun, leading to differences in air pressure.

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NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Front

What is an example of convection in everyday life?

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An example of convection is when warm air rises and cool air moves in to take its place, such as in a room heated by a radiator.

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How does a hair dryer use convection?

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A hair dryer uses convection by blowing warm air over wet hair, causing the moisture to evaporate.

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What happens to warm water in a pot on the stove?

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Warm water rises to the top while cooler water sinks, creating a convection current.

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NGSS.MS-PS1-4

Front

What is an example of radiation?

Back

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