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Tuesday 15 April 2014

Do I hear something?

Why do we hear sounds?
Sound is made from vibrations in the air.

Sound waves are in the air and  our ears can the sounds from a distance if they are really  loud from a distance. When the ear hears the sound, they pass a message to the brain which makes you act. Sound waves cause the eardrums to vibrate.


The brain makes sense of the nerve messages and helps us recognise the sounds. The anvil, hammer and stirrup wobble and move the liquid inside the ear.
Sound waves are collected by the outer ear.

We need ears so that we can get important information. We need our ears to hear so that we can act appropriately in situations.
Ears are important because they help us to listen and learn from the world around us.

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