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People get wavelength and period mixed up all the time. The period of a sound wave is the time it takes for an air molecule to oscillate back and forth one time. The wavelength of a sound wave is the distance between two compressed regions of air.
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Loudness of sound is measured in decibels (dB). This is actually a measure of intensity, which relates to how much energy the pressure wave has. Decibels are a relative measurement. They relate the intensity of a pressure wave to a normal or standard pressure.
Sound level can be measured with a device called a decibel meter. It samples and measures sound, giving a readout.
Echolocating animals identify an object by comparing the relative intensity of the sound waves returning to each ear to figure out the angle at which the sound waves were reflected. This gives information about the direction, size and shape of the object.
8 lis 2023 · Hertz is the unit used to measure frequency of sound waves. One hertz equals one cycle (vibration, or sound wave) per second. Intensity of a sound is a measure of the power of its waves.
Relate amplitude of a wave to loudness and energy of a sound wave; Describe the decibel scale for measuring sound intensity; Solve problems involving the intensity of a sound wave; Describe how humans produce and hear sounds
As an example, for water waves, v w is the speed of a surface wave; for sound, v w is the speed of sound; and for visible light, v w is the speed of light. The amplitude X is completely independent of the speed of propagation v w and depends only on the amount of energy in the wave.
