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