| A | B |
| conduction | The transfer of energy through matter |
| fluid | Any material that flows |
| convection | The transfer of energy through the bulk movement of matter |
| radiation | The transfer of energy in the form of waves |
| insulator | Restricts the movement of heat through objects |
| radiator | A device designed to heat the air by conduction |
| solar energy | Energy from the sun |
| solar collector | Devices that absorb radiant energy from the sun |
| heat engine | Devices that convert thermal energy into mechanical energy. |
| combustion | Rapid burning |
| internal combustion engine | Burns fuel inside the engine. |
| external combustion engine | Burns fuel outside the engine. |
| heat mover | Device that removes thermal energy from one location to another. |
| ocean thermal energy conversion | Process converting ocean water temperature into mechanical energy. |