Across
- 4. colors that cannot be made from other colors
- 6. a mirror that curves inward
- 8. the distance between two crests or between two troughs
- 10. the height of a wave
- 11. when light bounces off an object
- 13. opaque substances used to color other materials
- 14. a mirror that curves outward
Down
- 1. a piece of glass or other transparent object that refracts light and produces an image
- 2. the distance that one wave travels in one second
- 3. a form of wave energy
- 5. the bending of light as it passes from one medium into another
- 7. the number of waves that pass a certain point in one second
- 9. a wave that move perpendicular to the way that the matter is moving
- 12. any surface that can reflect light to form an image or picture, of an object