frequency or amplitude
Rarefaction is the part of the sound wave where the air particles are the farthest apart from each other. It's like the "trough" of a transverse wave. The size of this part affects the wavelength and amplitude of the sound produced, which changes the volume and pitch. Note that there's also another part of the wave called "compression". This is like the "peak" of a transverse wave.
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The "pitch" of the sound is determined by its frequency.(It would be much more elegant to call that a "characteristic"or a "property" of the sound, not a "part" of it.)
A wave form consists of a frequency and an amplitude. Sound pitch becomes higher (or more squeaky) with a higher frequency. The volume of sound becomes louder with a higher amplitude.
The amplitude of a sound wave is the same as its volume.
energy
Temprature affects the volume, since most objects expand when they are heated. And density is mass / volume.
Temprature affects the volume, since most objects expand when they are heated. And density is mass / volume.
Temprature affects the volume, since most objects expand when they are heated. And density is mass / volume.
mass and volume.
the strength or volume of the sound wave :)