What does this sound like?
We hear sounds all day long! There are sounds we enjoy, like music or people talking to us. There are also sounds we don't like, for example car horns or a dog barking. Sound actually travels in waves. Our ears and brain work together for us to hear them. The part of the ear that we see is the outer ear. This is where the sound waves are collected. We hear them when they go through the ear canal and hit our eardrum. When sound waves hit our eardrum, it vibrates and moves three little bones, the hammer, the anvil and the stirrup. These little bones bump against each other and help sound move along and enter the cochlea. This is a small, curled tube which looks like a snail shell. Inside the cochlea is liquid and nerves. These nerves are really small, but very important. As the stirrup moves, it makes waves in the liquid of the cochlea. These cause the nerves to move as well. When this happens, the nerves create signals that the brain understands and we can hear!

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