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Across 2. a wave is a component frequency of the signal that is an integer multiple of the fundamental frequency 4. time required for one wave to pass 9. The bending or spreading of a wave as it passes an obstruction. 11. a technique for determining the distance to an object under water 16. f time lambda 17. When two waves tend to do opposite things to medium, the total effect builds up. This is know as destructive interference. 18. a material through which a wave travels 19. a wave that appears to stay in one place and does not seem to move through the 20. an area of a longitudinal wave where the particles of the medium are close together 22. the response of a standing wave to another wave of the same frequency, with dramatic 24. the maximum height of a wave 26. When two or more waves share the same space at the same time These waves both act independently on the medium 28. the lowest point of a transverse wave 30. the highest point of a transverse wave 32. the rate at which a wave’s energy flows through a given unit of area 33. The bending of a wave as it passes the boundary between two media.

Down 1. a physical response to the intensity of sound, modified by physical factors 3. a wave that travels along a surface separating two media 5. a change in sound frequency caused by motion of the sound source, motion of the 6. When two waves tend to do same thing to medium, the total effect builds up. This is know as constructive interference. 7. a wave that causes the medium to vibrate at right angles to the direction in which 8. a longitudinal wave consisting of compressions and rarefactions , which travels through 10. the distance between a point on a wave and the same point on the next wave 12. Bouncing back of a wave as it strikes a boundary 13. a wave in which the vibration of the medium is parallel to the direction the wave 14. a disturbance in matter that carries energy from one place to another 15. any motion that repeats at regular time intervals 21. an area of a longitudinal wave where the particles of the medium are spread out 23. the number of complete waves that pass per second 24. a point of maximum displacement midway between two nodes in a standing wave 25. a unit that compares the intensities of different sounds 27. the frequency of a sound as a listener perceives it 29. unit used to measure frequency of a wave 31. a point on a standing wave with no displacement from rest