| A | B |
| Energy | The ability to do work. |
| Joule | Unit of energy equal to one newton moving one meter |
| Kinetic | in motion |
| Potential | at rest but still having capability to do work |
| calorie | unit of heat energy that will raise one gram of water one degree Celsius |
| Work | the product of force and distance |
| Chemical energy | energy in the bonds between atoms |
| Nuclear energy | energy in the atom itself |
| Electrical energy | energy of the electron |
| Gravitational energy | energy due to position, usually measured as height |
| Elastic energy | energy in a resilient material |
| Kinema | Greek word for motion |
| Temperature | the average kinetic energy of the particles in a substance |
| Absolute zero | temperature at which all particles have lost their kinetic energy |
| Rotational kinetic energy | energy of a spinning object |
| Translational kinetic energy | energy of a body moving along a path or trajectory |
| Entropy | unusable energy that contributes to disorder in the system |
| Thermodynamics | the study of energy flow through a system |
| First Law of Thermodynamics | Energy cannot be created or destroyed. It can change forms. |
| Second Law of Thermodynamics | No energy transformation is 100% efficient. |