| A | B |
|---|
| Ability to do work | Energy |
| Action that results when a force causes an object to move in the direction of the force | Work |
| Energy of motion | Kinetic Energy |
| Store energy an object has because of shape or position. | Potential Energy |
| A system that does not exchange energy with the environment around it. | Closed System |
| Total energy of motion and position | Mechanical Energy |
| Total energy of the particles that make up an object. | Thermal Energy |
| The energy stored in the bonds between atoms in a compound | Chemical Energy |
| Energy produced by an object's vibrations | Sound Energy |
| Energy produced by the vibrations of electrically charged particles. It can travel through a vacuum. | Light Energy |
| The energy associated with the changes in the nucleus of an atom | Nuclear Energy |
| The energy of moving electrons | Electrical Energy |
| Change from one form of energy into another | Energy Conversions |
| The force that opposes motion between two surfaces that are touching | Friction |
| Says that energy can be neither created nor destroyed | Law of Conservation of Energy |
| Device that makes work easier by changing the size and/or direction of a force | Machine |
| Working well, with little waste | Efficient |
| Energy used to fulfill the purpose | Useful energy |
| Energy that is wasted in a conversion | Non-useful energy |
| Always results from energy conversions due to friction | Thermal Energy |
| Unit of Energy | Joule |
