How does sound travel?
Sound travels through the air in WAVES.
How is sound made?
Sound is made by air molecules vibrating.
When the air molecules vibrate, what else vibrates inside of our ears?
When air molecules inside the ear vibrate, they shake tiny hairs on the insides of the ears.
When are our tiny hairs connected to?
The hairs are connected to nerves under the skin.
How fast does sound travel?
Sound travels at 770 miles per hour.
The sound vibrations _____ and _____ signals from the brain.
The sound vibrations SEND and RECEIVE signals from the brain.
What does the pinna do?
The pinna funnels sound into the ear canal.
What is the pinna made of; muscle, cartilage or skin?
The pinna is made of CARTILAGE!
What makes the eardrum vibrate?
Sound waves make the eardrum vibrate.
What is another name for ear bones?
Ear bones are called OSSICLES!
