Ear and Hear
Ear and Hear SOUND WAVES TRAVEL THROUGH THE AIR and are picked up by your ears. Your ear flap funnels sounds through a tube called the ear canal. The sound reaches the eardrum. It vibrates the eardrum. As the eardrum vibrates, it rattles three little bones called ossicles. They knock against the 'cochlea' deep inside the ear. The cochlea is filled with fluid, and as it is knocked, waves run through the fluid. The waves waggle the hairs attached to nerves. The waggling of the hairs tells your brain about the sound. Inside the ear The flap of the skin on the side of your head is only the entrance to the real ear. Inside are all the complex mechanisms of the middle ear, designed to pick up the faintest vibrations in the air and amplify them enough for the hearing nerve to respond to. Why have you got two ears? You have two ears so that you can tell which direction a sound is coming from, You Can pinpoint sound because a Sound to the left of you is slightly lou...