| A | B |
| Refraction | the bending of light when it travels from one medium to another |
| Angle of Refraction | Angle the light bends in the new direction |
| More Dense Material | causes light to bend toward the normal |
| Less Dense Material | causes light to bend away from normal |
| Absorption | Causes light to change into a new kind of energy |
| Reflection | Causes light to bounce off and travel in a new direction |
| Water | More dense than air |
| Incidence Ray | The ray of light that comes from the source |