project

2. repeats as a function of both time and position and can be described by its amplitude
5. unit for expressing the ratio between two physical quantities
9. the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave
11. the point on the medium that exhibits the maximum amount of positive or upward displacement from the rest position
12. the effect produced by a moving source of waves
14. a vibration that propagates as an acoustic wave
17. is a type of energy made by vibration
19. the change in direction of a wave passing from one medium to another caused by its change in speed
20. decrease in volume of any object or substance resulting from applied stress

1. electromagnetic radiations in which the direction and magnitude of the vibrating electric field are related in a specified way wavespeed is the speed at which a wave travels
3. abrupt change in the direction of propagation of a wave that strikes the boundary between different mediums
4. equals the number of cycles per second
6. The sensation of a frequency is commonly referred to as the pitch of a sound
7. the reduction of an item's density, the opposite of compression
8. when one object vibrating at the same natural frequency of a second object forces that second object into vibration motion
10. the SI unit of length or distance
13. attribute of a sound that determines the magnitude of the auditory sensation
15. electromagnetic radiation that can be detected by the human eye
16. the Standard International ( SI ) unit of time
18. the time required for one complete cycle of vibration to pass a given point