Sound and Light Vocabulary
The study of sound
Unit on the scale for sound intensity, abbreviated dB.
Change in pitch or frequency that occurs when the source of a sound wave is moving relative to an observer.
Process in which objects are located by emitting sounds and interpreting sound waves that are reflected back
A wave created by vibrating electric charges; can travel through a vacuum or through matter and can have a variety of frequencies and wavelengths.
Amount of energy a sound wave carries which can be measured in decibels, dB
Describes how humans perceive sound intensity
How high or low a sound appears to be, which is related to the frequency of sound waves.
Ability of an object to vibrate by absorbing energy at its natural frequency
System that uses the reflection of sound waves to find objects that are underwater
Sound waves with frequencies above 20,000 hertz.
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