| A | B |
|---|
| system | A set of items that work together |
| vibration | The rapid movement of matter caused by touch or sound |
| conduction | Transfer of energy through a solid |
| chemical energy | A battery is this kind of energy |
| refraction | When light is bent by a medium |
| transformation | The act of changing |
| convection | Flow of energy through a liquid or gas |
| reflection | The return of an image as in a mirror |
| radiation | The flow of energy through empty space |
| closed or complete | What a circuit must be to work |
| electromagnet | Item made by twisted a charged wire around a nail |
| concave lens | Thinner in the middle thicker on the edges |
| heat energy | Also known as thermal energy |
| electrical energy | The main energy that powers our homes |
| energy | Anything that can change things or do work |
| mechanical energy | The type of energy produced in cars |
| light energy | Energy produced by lamps |
| solar energy | From the sun |
| convex lens | Thicker in the middle and thin on the edges |
| open or incomplete | Circuits that do not work |
| sound waves | The way sound travels |
| transfer | When energy moves from one place to another |
