Waves

2. The maximum displacement of a wave from its undisturbed (equilibrium) position
4. A surface that does not allow any light to pass through it
5. A reflected sound wave
7. A process of energy transfer through oscillations, without matter being transferred with it
8. (Hz) The unit of frequency
10. Waves with oscillations that are parallel to the direction of travel/energy transfer
12. The changing of speed, and consequently the direction, of a wave as it changes medium
13. A surface that allows all or most of the light to pass through it
14. The distance from a point on one wave to the same point on the adjacent wave (i.e., peak to peak or trough to trough)

1. The number of waves passing a given point in a second. It is the inverse of the wave's time period
2. When a wave is not reflected, or does not pass through a surface
3. The time it takes for one complete wave to pass a given point. It is the inverse of frequency
6. The bouncing back of a wave at a boundary
9. The velocity at which energy is transferred through the medium. It is equal to the product of the wave's wavelength and frequency
11. Waves with oscillations that are perpendicular to the direction of travel/energy transfer