Heat Transfer: Conduction, Convection, Radiation

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What is Conduction?

Conduction is the direct heat transfer from one substance to another. conDuCtion= Direct Contact

What is Convection?

Convection is the direct heat transfer from a fluid. A fluid is either a liquid OR air

What is Radiation?

Transfer of heat energy through empty space. Often infrared WAVES

Matter

anything that has mass and takes up space

A pot sitting on a hot burner.

conduction

Ice melting in your hand.

conduction

Picking up a hot cup of coffee

conduction

Touching a metal spoon that is sitting in a pot of boiling water

conduction

Using a heating blanket to get warm

conduction

cooling a glass in an ice bucket

conduction

holding the handle of a pan

conduction

hot soup burning your tongue

conduction

Macaroni rising and falling in a pot of boiling water

convection

Putting your wet shoes on a floor vent to dry them faster

convection

air conditioner cooling a room

convection

boiling water

convection

cooking rice in water

convection

hot air balloon rising

convection

warm water on the surface of a lake and cold water at the bottom of the lake

convection

The law of conservation of energy states that _________ cannot be created or destroyed, it can only be transformed

energy

Temperature

measure of how hot or cold something is

A person placing their cold hands over a warm fire

radiation

A person placing their hand over a hot burner

radiation

Lying out in the sun to get a tan

radiation

Sun's light warming the Earth

radiation

The Sun.

radiation

a pan above the stove burner

radiation

feeling warm when you sit in sunlight

radiation

barbeque meat with charcoal (there's 2 types)

radiation for heat to reach the meat, conduction to cook it inside

heat (molecule movement) always moves from ______ to _______ (cooler to warmer OR warmer to cooler)

warmer to cooler--molecules always want to get cooler


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