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Heat Transfer NOTES By: Laura LeMay

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

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Page 1: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

Heat Transfer NOTESBy: Laura LeMay

Page 2: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

Thermal Energy

•TOTAL energy of motion in molecules of

a substance

(therm=heat)

Page 3: 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

Page 4: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

HEAT Energy Transfers…

•from hotter object to

COLDER objectHeathot cold

Page 5: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

3 types of heat Transfer1) 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)

Page 6: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

Type Definition Examples:

Radiation •infrared (not visible)

•felt as heat

Conduction •transfer of heat by touch

Convection transfer of heat by movement of fluid (liquid/gas)

Page 9: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

Conduction=touch• Examples:

* Hot sand on feet

* Touching hot light bulb• * Touching metal on hot seatbelt

* Stove to pan handle

* Melting ice in hand

Page 11: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

* Holiday chimes

* Spinning Lamps

Page 12: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

LOOK AT ALL THREE:

Page 13: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

Heat Transfer in the Troposphere

radiation

conduction

* convection

* CONVECTION is the most dominant heat transfer in the troposphere

Page 14: Heat Transfer NOTES By: Laura LeMay. Thermal Energy TOTAL energy of motion in molecules of a substance (therm=heat)

Temp Conversions• Pop test

• 1) 4 C --------------------- ______ F

• 2) 7 C ---------------------- ______ F

• 3) 14 F -------------------- ______ C

• 4) 0 C --------------------- ______ F

• 5) 21 F ------------------- ______ C