Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

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Presentation transcript:

Heat Transfer NOTES By: Laura LeMay

Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

Temperature Average amount of energy in motion * Measured with a thermometer

HEAT Energy Transfers… from hotter object to COLDER object Heat hotcold

3 types of heat Transfer 1) Radiation: infrared (not visible) and felt as heat 2) Conduction: transfer of heat by touch 3) Convection: transfer of heat by movement of fluid (liquid/gas)

TypeDefinitionExamples: Radiation infrared (not visible) felt as heat Conduction transfer of heat by touch Convection transfer of heat by movement of fluid (liquid/gas)

Radiation (infrared) Examples: *Feel warmth on face from sun= solar radiation * Warmth of a fire * Heat off car engine

More examples of radiation Heated driveways/ sidewalks * Heated floors

Conduction=touch Examples: * Hot sand on feet * Touching hot light bulb * Touching metal on hot seatbelt * Stove to pan handle * Melting ice in hand

Convection * Convection in water * Convection oven

* Holiday chimes * Spinning Lamps

LOOK AT ALL THREE:

Heat Transfer in the Troposphere radiation conduction * convection * CONVECTION is the most dominant heat transfer in the troposphere

Temp Conversions Pop test 1) 4 C ______ F 2) 7 C ______ F 3) 14 F ______ C 4) 0 C ______ F 5) 21 F ______ C

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