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21 Cards in this Set
- Front
- Back
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Number of waves that pass a point (or of vibrations that occur) every second |
Frequency |
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Distance from a point on a wave to same point on next wave. (commonly defined as distance from crest to crest) |
Wavelength |
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Maximum displacement from equilibrium to crest or trough; relates to strength or intensity, or (for sound) to loudness. |
Amplitude |
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= frequency x wavelength; depends mostly on medium and type of wave; speed |
Velocity |
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Type of wave where vibration of medium is along same direction as wave direction |
Compressional |
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Type of wave where vibration of medium is perpendicular to direction of the wave |
Transverse |
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Unit for measuring wavelength ; abbreviate |
meter; m |
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Unit for measuring period; abbreviate |
second; s |
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Unit for measuring frequency; abbreviate |
Hertz; Hz |
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Unit for measuring sound intensity; abbreviate |
Decibel; db |
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Lowest natural resonating frequency of an object |
Fundamental |
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Tones with with that are multiples of the fundamental |
Overtones |
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A tone with twice that frequency of a lower-pitched one. |
Octave |
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Thin membrane in our ear that vibrates in response to sound waves |
Eardrum |
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Thin membrane in our ear that vibrates in response to sound waves |
Eardrum |
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Range of frequencies of human hearing |
20 Hz to 20,000 Hz |
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Sound frequencies higher than 20,000 Hz |
Ultrasonic |
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The tendency of a substance or object to vibrate at same frequency as another |
Resonance |
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Sound frequencies lower than 20 Hz |
Infrasoncs |
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X |
X |
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Sound that has no pattern of rhythm or tones |
Noise |
