Physical Science Module 9 Crossword Puzzle

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Across
  1. 5. any motion that repeats at regular time intervals
  2. 6. an indication of how high or low a sound is, which is primarily determined by the frequency of the sound wave
  3. 9. Sound travels fastest in this medium
  4. 12. threshold of human hearing
  5. 13. unit for measuring intensity
  6. 16. A wave in which the medium vibrates at right angles to the direction the wave travels
  7. 19. vibrate back and forth
  8. 22. the rate at which a wave’s energy flows through a given area
  9. 24. the highest point on a wave
  10. 25. below the range of human hearing
  11. 27. the time it takes to complete a full cycle
  12. 29. Prolonged exposure to loud sounds can destroy the cells in this part of the ear
  13. 31. stretched out sections of longitudinal waves
  14. 32. a wave that travels along the surface of a medium
  15. 33. the distance between two adjacent crests or two adjacent troughs
Down
  1. 1. the height of a wave from midpoint to crest or midpoint to trough
  2. 2. the lowest point on a wave
  3. 3. the number of complete cycles (crest to crest or trough to trough) in a given time
  4. 4. a wave in which the vibration of the medium is parallel to the direction the wave travels
  5. 7. Greek letter λ
  6. 8. Traveling Faster than the Speed of Sound
  7. 10. compressed sections of longitudinal waves
  8. 11. wavelength x frequency
  9. 14. SI unit for frequency
  10. 15. a disturbance in matter that transfers energy through the matter (a medium)
  11. 17. a thunder-like sound produced as a result of an object traveling at or above Mach 1
  12. 18. can be a solid, liquid, or gas
  13. 20. sound navigation and ranging
  14. 21. beyond the range of human hearing
  15. 23. unit for supersonic speed
  16. 26. ringing in the ears
  17. 28. A change in sound frequency caused by the motion of the sound source, motion of the listener, or both
  18. 30. Unit for measuring temperature