| A | B |
|---|
| energy | the ability to make things move or change |
| mechanical energy | the energy of moving objects |
| thermal energy | the energy of moving particles |
| heat | thermal energy moving from one object to another |
| electrical energy | the energy of moving electric charges |
| light energy | energy that you can see |
| sound energy | energy that you can hear |
| electrical circuit | the path that an electric current takes |
| closed circuit | a complete path for the flow of electricity |
| load | any device that uses electricity |
| open circuit | an incomplete path for the flow of electricity |
| medium | a material through which light travels |
| reflection | the bouncing of light off a surface |
| transmitted | when light passes through an object |
| refraction | the bending of light as it passes from one material to another |
| lens | a curved piece of glass that refracts light |
| prism | a clear, see through object that separates white light into the spectrum |
| spectrum | all the colors that make up white light |
| absorption | when a material takes in light energy and changes it into heat |
