Conduction, Convection, and Radiation

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Presentation transcript:

Conduction, Convection, and Radiation Heat Transfer Conduction, Convection, and Radiation

Heat Transfer Heat transfer is the movement of heat energy from a warmer item to a cooler item. Remember, heat moves in predictable ways, from a high to a low.

Three Heat Transfer Situations Conduction Convection Radiation

Radiation The transfer of Heat energy through the air or empty space. Heat you can feel without touching it Examples: Sun Fire Light bulb

Radiation How does heat energy get from the Sun to the Earth? There are no particles between the Sun and the Earth so it MUST travel by radiation RADIATION ?

Radiation Diagram

Conduction Conduction is heat transfer through solids. Heat goes from one Object to another Object Examples: -Touching the bottom of an iron -Washing your hands in hot water -Touching a plate after you take it out the microwave

Conduction examples

Convection -Is the movement of heat energy through the air or in liquids -Hot energy wants to rise -Cold energy wants to sink Convection is the primary way that heat moves through gases and liquids.

Heat movement mass so it will rise Cold so it will sink

Hot energy Rise and Cold Sink

Convection and Earth Science Connection