Sound Formation In The Human Ears

Sound surrounds us all the time. You may awaken in the morning to the sound of an alarm clock or Dad snoring. During the day you may hear the cacophony of auto traffic or the hustle and bustle of city life. But all sounds have one thing in common. They are formed by the movement or vibration of an object. The sounds we hear every day are formed by the vibration or movement of air. Basically what happens is sound makes tiny particles in the air, called molecules , bump into each other. The molecules bump into each other compressing and then expanding to cause the wave to move like a falling column of dominos. This vibration of molecules is passed from molecule to molecule until it reaches our ears where we then 'hear' the vibrating air.