The ear canal carries sound waves to the eardrum. The eardrum vibrates, and passes vibrations on to the bones in the middle ear.
Sound reaches your ears as vibrations in the air. The vibrations travel down the ear canal to the eardrum, which then vibrate too. These three small bones make the vibrations bigger and pass them through to the fluid in the inner ear. The cochlea in the inner ear is coiled like a snail shell. As nerve endings in the lining of cochlea detect vibrations in the fluid inside it, they send electrical signals to the brain.
Two ears help us to detect which direction of sounds are coming from.
A spinning dancer stops herself getting dizzy by turning her head quickly and keeping her eyes on a fixed point.
Three curved tubes in inner ear help us to balance. They are filled with fluid and are semicircular canals. They are arranged at right angles to each other (like three sides of a box) so that as you move, the fluid inside them moves too. Nerves in the lining of the tubes detect changes in the fluid and send the information to the brain.
Where Does The Eustachian Tube Go?
What is Earwax
Factoid About Whispers
A jet lifts off the runway. The noise near a jet aircraft just can be as much as 120 decibels.
If you are flying in an aircraft and it changes height quickly, you may go a bit deaf, because the air inside and outside the eardrum is at different pressures. Your ears "pop" when the pressures become equal again.
Loud noise is dangerous. Any noise over about 120 decibels can damage your hearing immediately. If you constantly listen to sounds of 90 decibels or more, they can damage your hearing too.