As a sound wave travels it compresses the air particles around it together in order for it to travel because a wave cannot travel if the matter it uses isn't connected.
There are four types of seismic waves, the P-wave, S-wave and the Love and Rayleigh waves. Of these four types, the P-wave is a longitudinal / compression wave.
Wavelength depends on the frequency, or pitch of the wave. Sound travels at about 1125 ft/second at sea level. Divide speed by frequency to get wavelength.
Yes they are, quoting from Richard Muller Physics professor at UC Berkley, "waves in sound don't come from up and down motion, but from compression and dilation. When these compressions reach your...