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CRPhysicsCh12Vocab
CRPhysicsChapter12Vocabulary2016
| Question | Answer |
|---|---|
| the region of a longitudinal wave in which the density and pressure at a maximum | compression |
| the region of a longitudinal wave in which the density and pressure are at a minimum | rarefaction |
| a measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave | pitch |
| an observed change in frequency when there is relative notion between the source of waves and an observer | Doppler Effect |
| the rate at which energy flows through a unit area perpendicular to the direction of wave motion | intensity |
| a dimensionless unit that describes the ratio of two intensities of sound; the threshold of hearing is commonly used as the reference | decibel |
| 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 | resonance |
| the lowest frequency of vibration of a standing wave | fundamental frequency |
| a series of frequencies that includes the fundamental frequency and integral multiples of the fundamental frequency | harmonic series |
| the musical quality of a tone resulting from the combination of harmonics present at different intensities | timbre |
| the periodic variation in the amplitude of a wave that is the superposition of two waves of slightly different frequencies | beat |
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CRMissK
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