The oscillating variations in sound pressure (called the WAVEFORM of the sound) PROPAGATE in the form of a SOUND WAVE. See: ACOUSTIC IMPEDANCE, COMPRESSION, LAW OF SUPERPOSITION, PARTICLE VELOCITY, ...

It is a relative quantity in that it is the ratio between the actual SOUND PRESSURE and a fixed reference pressure. This reference pressure is usually that of the THRESHOLD OF HEARING which has been ...

Sound waves can reflect off surfaces ... runs from the middle ear to the back of the nose and makes sure that the pressure is the same on both sides of the eardrum. When your ears pop the eardrum ...

Sound is basically pressure waves that are moving through some medium. So the sound that we usually hear is going through the air. And it's transmitted as what are called "longitudinal waves." ...

And when that shock wave, traveling at the speed of sound, sweeps past you on the surface, you hear and feel the release of the pressure that the shock wave has built up as a great BOOM-BOOM.