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Sound Waves
Next Generation: MS.PS4.1

Sound Waves

Author: Nathan Lampson

This lesson will introduce sound waves, and describe how the amplitude and frequency can change the pitch.

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Sound is produced by a wave that is an oscillation of the pressure within solid, liquid or gas.

Humans can detect sound with their eardrum.  When a person hears a sound, they detect differences in the pressure of air particles.


As the frequency of a sound wave increases it's pitch increases.  The amplitude (y value) determines the intensity of the sound.  The greater the amplitude, the more intense the sound.



There is no sound in the vacuum of space because there is no medium that can be oscillated in order to carry a sound wave.

Sound Waves