Test

1. the material through which a wave travels
4. The degree of refraction from one medium to another expressed as a ratio. The higher the ratio, the greater the bending of waves between media.
10. the light ray that bounces off a surface
12. filtering light waves to cause all passing through to vibrate in only one direction
13. the angle of incidence is equal to the angle of reflection
14. a device built to observe distant objects by making them appear closer
15. incoming light ray

2. a wave interaction that occurs when two or more waves overlap
3. the bending of waves around a barrier or through an opening
5. an instrument that can disperse a beam of light into a spectrum of its component wavelengths.
6. the change in direction of a propagating wave (light or sound) when passing from one medium to another
7. an imaginary line along the waves surface with every point along this line in phase
8. the bouncing back of a wave when it hits a surface
9. a line at right angles to a surface
11. device that produces magnified images of structures that are too small to see with the unaided eye