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A LITTLE SOMETHING WORTH KNOWING

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ScienceOne small ahaPhysics concept

Most materials become slightly larger when heated through this process.

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ScienceOne small aha
Your new ahaThermal Expansion

Thermal Expansion: Tendency of matter to change size with temperature. Source: Thermal expansion ↗

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  1. 18Circulating fluid carries heat in this process, as warm air rises above a radiator.RECALL
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    Convection carries heat through circulating fluid or gas, sending warm air rising above a radiator.

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  2. 19Heat travels through a metal spoon left in hot soup by this process.RECALL
    Conduction

    Conduction passes heat directly between touching materials, heating a metal spoon left in hot soup.

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  3. 20A campfire warms you from a distance through heat carried by electromagnetic waves.RECALL
    Thermal Radiation

    Thermal radiation carries heat as electromagnetic waves, letting a campfire warm you without direct contact.

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