Rocket draws a twisty tunnel map.
"Where does sound go after the ear canal?" he asks.
Raven asks, "What do you notice on the map?"
Nova hints, "Follow the shake."
Sound goes into the outer ear.
It travels down the ear canal to the eardrum.
The eardrum vibrates.
It passes the shake to three tiny bones.
The bones pass the shake deeper inside.
Deep inside is a part shaped like a snail shell.
It is called the cochlea.
The cochlea turns the shake into messages.
A nerve carries the messages to your brain.
Your brain says, "That is a bell!"
Your inner ear has another job.
Parts in there help you balance.
They help you stay steady when you move.
| Sentence | True or false? |
|---|---|
| The eardrum vibrates when sound comes in. | ? |
| The cochlea is shaped like a snail shell. | ? |
| Ears have nothing to do with balance. | ? |
| A nerve carries messages to your brain. | ? |
Here are new sight words.
Look at each word. Say it. Spell it.
Much: M-U-C-H.
Line: L-I-N-E.
Means: M-E-A-N-S.
You followed sound all the way in!
Tomorrow you will learn how to protect your ears.