4. Hearing

IDevice Icon HEARING




4.1. Our hearing.

There are two parts:

  • We can see the outer parts. These are our two ears.

  • The inner ears are inside our head. They are very delicate.

We can hear different sounds and we can tell where the sounds come from.




4.2. How can we hear sounds.


  • As we know, sound vibrates. The vibrations go into our outer ears. They go along the ear canal.



  • The vibrations reach the ear drum. It vibrates.

  • The movement of the eardrum reaches the small bones. Then it goes to the cochlea.

  • The cochlea collects the information. It sends it to the brain.

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Andrés Egea - Yolanda Marcos 2008