Waves and Whatnot

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Across
  1. 5. a type of wave that requires a medium to travel
  2. 6. the number of wave cycles per second
  3. 8. point of lowest density in a longitudinal wave
  4. 11. highest point above equilibrium
  5. 14. a physical environment in which a wave travels through
  6. 15. how high or low a sound is perceived to be
  7. 16. time required to complete one wave cycle
  8. 17. lowest point above equilibrium
Down
  1. 1. a type of wave in which the particles vibrate perpendicular to the direction of the wave
  2. 2. the motion of a disturbance
  3. 3. the distance a wave travels in one cycle
  4. 4. the unit of measurement used for frequency
  5. 7. point of highest density in a longitudinal wave
  6. 9. point on a standing wave with zero displacement
  7. 10. a type of wave in which the particles vibrate parallel to the direction of the wave
  8. 12. the distance from equilibrium to the crest or trough
  9. 13. point on a standing wave with maximum displacement