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Hearing is one of the five senses. The ears are used for hearing (listening to) sounds.

It is harder to hear a sound made farther away. It is also harder to hear a sound when other sounds are louder.

Sounds pass into the ear. They make the eardrum vibrate. That makes tiny bones in the ear move. The bones move a small tube shaped like a snail shell, called the cochlea. Inside the cochlea is a fluid, which moves tiny hairs that send signals to the brain.