1. Heat Transfer NOTES By: Laura LeMay

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

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

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

5. 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)

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

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

8. More examples of radiation Heated driveways/ sidewalks * Heated floors

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

10. Convection * Convection in water * Convection oven

11. * Holiday chimes * Spinning Lamps

12. LOOK AT ALL THREE:

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

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