Light enters the eye and forms images. Then the eye changes these images into signals that tell the brain what you are seeing. We use the sense of sight to tell the differences between size, shape, and color, among others. We see everything in our environment. The ears give us our sense of hearing.
Vibrations enter our ears and are changed into signals that are sent to the brain.
The brain translates the vibrations we hear and interprets sounds. We have two ears in order to hear exactly where a sound is coming from. The nose gives us our sense of smell. When we inhale, detectors in our nose smell the odors. The nose detects 1,000 different smells and it is also used to take in air for the lungs that helps us breath.