Physics 100
Chapt 9
Temperature & heat
Temperature scales
Fahrenheit
212 F
32 F
- 459 F
room temp 27 C 300 K 80 F
Temperature avg KE
Thermal atomic motion
Heat energy= KE and PE associated with the random thermal motion of atoms
Air solid
Summary
• Heat is energy associated with random motion of atoms & molecules in material
• Temperature tells you the average “thermal” energy (including KE & PE) of atoms & molecules
• At absolute zero (T=0K, or -273C, or -459F) motion of atoms & molecules in material ceases.
Fahrenheit
212 F
32 F
- 459 F
80 F 27C 300 KRoom temp
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