ear

Question 1

how is sound interpreted by the ear?

Answer 1

1. sound waves are picked up by the ear lobe and send them to the ear cannel.
2. the sound waves travel aong the ear canal to ear drum.
3. the vibrations travel through the ossicles.
4. liquid inside the cochlea vibrate and the auditory nerve detects these vibrations and turns them into an electrical signal
5. this signal is transmitted by to the brain.

Question 2

define auditory canal?

Answer 2

the passageway from the outer ear to the eardrum.

Question 3

define eardrum?

Answer 3

the membrane of the middle ear, which vibrates in responce to sound waves.

Question 4

define cochlea?

Answer 4

a spiral shaped shell in the ear that changes sound into nerve messages and send them to the brain.

Question 5

how long can you listen to 85db sound until it cause hearing damage?

Answer 5

8 hours+

Question 6

at what level do you have to listen to siund for it to cause immediate damage?

Answer 6

180db