| A | B |
|---|
| vibrate | to move back and forth quickly |
| sound wave | the movement of air molecules around a vibrating object |
| light | a wave that can travel in a vacuum |
| photons | bundles of energy of which light is made |
| visible spectrum | the light waves that we can see |
| prism | a piece of glass or plastic that will separate white light into the colors of the visible spectrum |
| Reflection | the bouncing back of a light wave |
| plane mirror | a flat mirror |
| concave mirror | mirror with reflecting surface curved inward |
| convex mirror | mirror with reflecting surface curved owtward |
| refraction | the bending of a light wave |
| lens | a curved piece of glass that will bend light waves |
| concave lens | an lens that is thin in the middle and thick at the edges |
| convex lens | a lens that is thick in the middle and thin at the edges |
