Sound intensity or acoustic intensity(I) is defined as the sound power Pacper unit area A. The usual context is the noise measurement of sound intensity in the air at a listener's location.

height is the intensity, the distance covered by a wave divided by the time it takes is the speed. (ie. short waves = low intensity, fat waves = slow waves)

When talking about sound, the intensity of the sound is calculated the sound pressure multiplied by the velocity. It doesn't use amplitude in its calculation.

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Engage in physical activity to sustain or improve health and fitness; take exercise.