Waves, Sound, and Light

1. A transparent object with at least one curved side that causes light to change direction.
2. A material that allows most of the light that strikes it to pass through, but through which objects appear blurry.
3. A material that allows almost all of the light striking it to pass through, and through which objects can be seen clearly.
8. The change in direction of a wave as it changes speed while moving from one medium to another.
9. A wave that travels only through matter.
10. A material in which a wave travels.
12. A wave in which the disturbance is perpendicular to the direction the wave travels.
14. A material through which light does not pass.
16. The passage of a wave through a medium.
17. The distance between one point on a wave to the same point on the next wave.

1. Causes the particles in a medium to move parallel to the direction that the wave travels.
4. The bouncing of a wave off a surface.
5. Color you see depends on the color the light reflects on.
6. A wave that is the number of times the pattern repeats in a given time.
7. A lens that is thicker in the middle than at the edges.
11. The change in direction of a wave when it travels by the edge of an object or through an opening.
13. A wave is the maximum distance that the wave moves from its rest position.
15. The transfer of energy by a wave to the medium through which it travels.