I have a question regarding sound waves. Can someone clear up the following if anything is wrong: Sound waves have parts of high pressure and low pressure. The medium in which the sound is being transmitted vibrate backward and forward, being their maximum displacemente from rest "smax". I get very confused with the terms because I believe there are two parts which need to be analyzed in waves: the movement of the medium and the movement of the wave. So, particles in the air go back and forths, while the wave goes only forth? Damn sorry I think ur like "wow this guy is confusing himself even more." But Im really confused about sound waves. Can anybody give me some quick notes about the movement of sound in air. THANKS A LOT IN ADVANCE.