Physics Vocab

3. When waves add together to get a larger amplitude
5. Waves are not physical objects so they can occupy the same space at the same time.
7. A wave where the direction the wave travels is perpendicular to the vibration.
8. Builds up wave energy, a constructive interference with an object's natural vibrating frequency.
11. When waves cancel parts of other waves to make a smaller amplitude.
13. The number of waves that pass every second.
15. The process of moving back and forth regularly.
16. A wave that needs a medium to propagate.
17. When a wave travels.
20. The distance from a crest to the next crest (or a trough to the next trough)

1. A wave that does not need a medium in order to propagate.
2. Tells us the displacement of the crest (or trough) from the wave's equilibrium position.
4. The bottom-most part of the wave.
6. Where the wave passes through equilibrium.
9. How high or low something sounds. Analyzing the frequency of the sound wave gives the pitch.
10. The amount of time that passes with each wave.
12. Something a wave would need to travel through.
14. A wave where the direction the wave travels is in the same direction as the vibration.
18. The change in wave frequency during the relative motion between a wave source and its observer.
19. The top-most part of the wave or the peak of the wave.
20. Disturbance that transfers energy.