Periodic Motion

3. unit for period
7. the pattern of disturbance caused by the movement of energy traveling through a medium
8. the spreading of waves around obstacles
10. system amplifies sound waves whose frequency matches one of its own natural frequencies of vibration
11. the maximiun displacement of a particle of the medium from the rest
13. the time it takes for an object to complete one cycle
15. The number of cycles in one second
17. the shortest distance between two points
18. the point on the medium that exhibits the maximum amount of negative displacement from the rest position
19. One repetition of the motion

1. The displacement of the particles of the medium is parallel to the direction of the wave
2. a wave that is not capable of transmitting its energy
4. The displacement of the particles of the medium is perpendicular to the direction of the wave
5. a longitudinal wave propagated by the elastic compression of the medium
6. the change in direction of a wave passing from one medium to another caused by its change in speed.
9. measure sound intensity
12. unit for frequency
14. the horizontal line in the middle of the wave.
16. the point on the medium that exhibits the maximum amount of positive displacement from the rest position
17. A disturbance that propagates through a material medium or space