Physics Sound Crossword Version C

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Across
  1. 3. a disturbance of matter that is transmitted from its source outward by longitudinal waves
  2. 6. a unit used to describe sound intensity levels
  3. 8. a constructive interference of sound created by an object moving faster than sound
  4. 10. the frequency of the amplitude fluctuations of a wave
  5. 11. to drive a system at its natural frequency
  6. 12. the phenomenon of driving a system with a frequency equal to the system's natural frequency
  7. 15. the power per unit area carried by a sound wave
  8. 16. the amount that matter is disrupted during a sound wave, as measured by the difference in height between the crests and troughs of the sound wave.
  9. 18. a phenomenon produced by the superposition of two waves with slightly different frequencies but the same amplitude
  10. 19. the reduction in amplitude over time as the energy of an oscillation dissipates
Down
  1. 1. the level of sound relative to a fixed standard related to human hearing
  2. 2. the perception of sound intensity
  3. 4. all resonant frequencies higher than the fundamental
  4. 5. the perception of sound
  5. 7. an alteration in the observed frequency of a sound due to relative motion between the source and the observer
  6. 9. the term used to refer to the fundamental and its overtones
  7. 12. a low-pressure region in a sound wave
  8. 13. the frequency at which a system would oscillate if there were no driving and no damping forces
  9. 14. the lowest-frequency resonance
  10. 17. the perception of the frequency of a sound