Waves and Sound

2. a wave where the disturbances through a medium cause it to appear to "not move"
5. the lowest point of a wave when measured from the midline
7. a wave that displaces matter parallel to the direction of wave travel
8. the number of complete cycles every second
11. a point on a standing wave where the wave does not move
13. a wave that displaces a particle perpendicular to the direction of wave motion
15. the maximum displacement from its position of rest. Depends on the energy of the wave, NOT the frequency or wavelength
16. superposition of waves with opposite but equal amplitudes
17. the highest point of a wave when measured from the midline
18. the shortest distance between points where the wave pattern repeats itself
19. the waves must be _____________ in order to have constructive interference
21. the substance or material that the wave travels through

1. the waves must be _______________ in order to have destructive interference
3. a point on a standing wave where the wave has the largest displacement
4. occurs when the wave movement is on the same side and the amplitude is larger than the individual wave (waves "add" together)
6. what a wave does when it bounces off a barrier and goes back in the direction it came only flipped
9. a disturbance that carries energy energy through matter or space
10. the speed a wave travels through a medium
12. two or more waves that overlap and are the algebraic sum of the displacements
14. a wave that requires a medium in order to transfer their energy from one location to another
20. the time needed to repeat one cycle of motion