Waves Vocab

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Across
  1. 1. require a medium in order to transport their energy from one location to another.
  2. 4. the distance a wave travels in a given amount of time
  3. 7. relatively large selective response of an object or a system that vibrates in step or phase, with an externally applied oscillatory force
  4. 8. the number of waves that pass a fixed point in unit time.
  5. 10. the horizontal line in the middle of the wave.
  6. 13. the spreading of waves around obstacles
  7. 14. the reduction of an item's density, the opposite of compression.
  8. 15. the maximum displacement by a point on a wave measured from its equilibrium position.
  9. 19. a wave whose oscillations are perpendicular to the direction of the wave's advance.
  10. 24. the change in the direction of a wave front at the interface between two different media, bouncing the wave front back into the original medium
  11. 26. the apparent difference between the frequency at which sound or light waves leave a source and that at which they reach an observer
  12. 27. a subjective term describing the strength of the ear's perception of a sound.
  13. 28. the spatial period of a periodic wave
Down
  1. 2. the maximum value of upward displacement
  2. 3. the change in direction of a wave passing from one medium to another caused by its change in speed
  3. 5. waves in which the vibration of the medium is parallel to the direction the wave travels and displacement
  4. 6. the time required for one complete cycle of vibration to pass a given point
  5. 9. the unit of distance
  6. 11. a wave with a repeating continuous pattern which determines its wavelength and frequency.
  7. 12. the part of the wave (or Slinky) that is pressed together
  8. 16. (m/s)
  9. 17. The sensation of a frequency
  10. 18. the unit of time
  11. 20. unit for expressing the ratio between two physical quantities, usually amounts of acoustic or electric power, or for measuring the relative loudness of sounds.
  12. 21. a vibration that propagates as an acoustic wave
  13. 22. the attribute that wave oscillations have a definite direction relative to the direction of propagation of the wave
  14. 23. the unit of frequency
  15. 25. the opposite of a crest, so the minimum or lowest point
  16. 29. an electromagnetic wave which travels through the vacuum of outer space