Waves, Sound, and Light

3. A wave is the number of times the pattern repeats in a given time
5. When a wave changes direction and it starts to speed up while moving from one medium to another
8. Lens that are thicker in the middle but the edges are thin
9. A piece of glass material cut with precise angles and plane faces
11. Is the passage of a wave through a medium
14. The distance between one point on a wave to the same point on the next wave is the wavelength
15. When a material doesn't let light through
16. A lens that is thicker in the edges than in the middle
17. Type of wave where the particles in a medium to move parallel to the direction that the wave travels
18. Transfers energy by a wave

1. The lowest point of a wave
2. Is the bouncing of a wave off a surface
4. The change of direction by a wave when an object is moving by the edge of the object
6. Type of wave that travels only through matter
7. When a wave is the maximum distance that the wave moves from it's rest position
10. Objects that are see-through
11. An object that appears blurry
12. A material in which a wave travels
13. Type of mirror with a flat surface that produces an erect visual image of a real object where front and back are reversed
17. A transparent object with at least one curved side that causes light to change direction