| A | B |
| absorption | transfer of energy by a wave to the medium through which it travels |
| electromagnetic radiation | energy carried through space or matter by electromagnetic waves |
| image | figure, picture or representation of an object |
| light | electromagnetic radiation you can see |
| opaque | describes a material through which light does not pass |
| translucent | describes a material that allows most of the light that strikes it to pass through, forming a blurry image |
| reflection | bouncing of a wave off a surface |
| transmission | passage of light through an object |
| transparent | describes a material that allows almost all the light that strikes it to pass through, forming a clear image |