Definitions
What is the pinna?
The part of your outer ear that you see in the mirror and is a funnel collecting sound.
Pinna and ear canal
The outer ear is made up of the pinna and the ear canal
What do we hear?
Vibrations, not sound.
Who invented the telephone?
Alexander Graham Bell
List three things you can do to care for your ears?
2. Cover our ears from loud noises.
3. Have a doctor remove the earwax build up.
4. Don't listen to loud music.
5. Don't stand close to loud noises.
What is vibration?
The movement of an object back and forth
What makes up the middle ear?
The middle ear is made up of the eardrum, hammer, anvil and the stirrup
Explain the cups and string experiment
There vibrations of our voice vibrate the cup which vibrates the string which vibrates the other cup allowing up to hear the other person.
What are some loud jobs that you should wear earplugs for?
Airport workers, construction workers, printers.
What is the ear canal?
The ear canal is a tunnel that is joined to the part of the ear you can see.
What makes up the inner ear?
The inner ear is made up of the cochlea and the auditory nerve.
Why is it hard to hear someone when they are whispering?
There vibrations are so low it is hard to hear.
Where was the inventor of the telephone born?
He was born in Scotland.
What part of the ear controls balance?
The semi-circular canals control our balance/
What is the eardrum?
The eardrum is a thin covering at the end of the ear canal.
Name the three tiny bones in the inner ear
The three tiny bones are the hammer, anvil and the stirrup.
Explain why when you spin, you get dizzy.
The fluid in the semi-circular canals (which control balance) will keep moving which moved the hairs, which sent the message to the brain that the body was still moving.
When was the telephone invented?
It was invented in March 1876.
What is the cochlea?
The cochlea is a shell shaped part of the inner ear that is filled with fluid and lined with tiny hairs.
What sends messages from the ear to the brain?
The auditory nerve sends messages from the ear to the brain.
How can we hear someone better?
We can angle our pinnas.
When was Alexander Graham Bell born?
He was born on March 3rd, 1847.