Across
- 2. The region of a longitudinal wave in which the density and pressure are at a minimum
- 5. A measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave
- 7. The circles that represent the centers of compressions in spherical waves
- 8. An observed change in frequency when there is relative motion between the source of waves and an observer
- 9. A dimensionless unit that describes the ratio of two intensities of sound; the threshold of hearing is commonly used as the reference intensity
- 10. The region of a longitudinal wave in which the density and pressure are at a maximum
- 11. The rate at which energy flows through a unit area perpendicular to the direction of wave motion
- 12. A phenomenon that occurs when the frequency of a force applied to a system matches the natural frequency of vibration of the system, resulting in a large amplitude of vibration
Down
- 1. The lowest frequency of vibration of a standing wave
- 3. The musical quality of a tone resulting from the combination of harmonics present at different intensities
- 4. The periodic variation in the amplitude of a wave that the superposition of two waves of slightly different frequencies
- 6. A series of frequencies that includes the fundamental frequency and integral multiples of the fundamental frequency