| A | B |
| energy | ability to do work |
| kinetic energy | energy of motion |
| potential energy | stored energy |
| radiation | heat transfer through electromagnetic waves |
| solar energy | energy from the sun |
| transformation | changing form |
| Law of Conservation of Energy | Energy cannot be created or destroyed |
| thermal energy | heat energy |
| conduction | energy transfer by direct contact |
| mechanical energy | energy related to motion |
| conductor | substance that can transfer energy easily |
| insulator | substance that does not transfer energy easily |
| heat | energy of molecular motion |
| convection | energy transferred through the movement of a fluid |
| fossil fuel | fuel stored from living things |