| Definition of Internal Energy | |
| Movie | |
| Definition of Thermal Energy | |
| Movie | |
| Thermal Energy Transfer 1 - Thermal Contact | |
| Movie | |
|
Thermal Energy Transfer 2 - Thermal Equilibrium
(note: She should be saying "thermal energy" instead of "heat") | |
| Movie | |
|
Thermal Energy Transfer 3
(note: She should be saying "thermal energy" instead of "heat") | |
| Movie | |
| Ice Melting in Air | |
| Movie | |
| Water: Liquid and Solid Models | |
| Picture | |
| Water: Expansion and Contraction Graph | |
| Picture | |
