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Sound
| Term | Definition |
|---|---|
| pitch | a measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave |
| loudness | the extent to which a sound can be heard |
| decibel | the most common unit used to measure loudness (symbol dB) |
| sound wave | a longitudinal wave that is caused by vibrations and that travels through a material medium |
| Doppler effect | an observed change in the frequency of a wave when the source or observer is moving |
| echo | a reflected sound wave used by animals such as bats |
| echolocation | the process of using reflected sound waves to find objects; of electromagnetic radiation |
| sonar | sound navigation and ranging, a system that uses acoustic signals and returned echoes to determine the location of objects or to communicate |
| interference | he combination of two or more waves that results in a single wave |
| resonance | a phenomenon that occurs when two objects naturally vibrate at the same frequency; the sound produced by one object causes the other object to vibrate |
| sound wave | a longitudinal wave that is caused by vibrations and that travels through a material medium |
| Hertz | a unit of frequency equal to one cycle per second |
| ultrasound | sound waves with frequencies greater than 20,000 hertz (Hz), the upper limit of typical hearing levels in humans, often used for medical purposes |
| interference | the combination of two or more waves that results in a single wave |
Created by:
kdominick
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