| A | B |
|---|
| 3 parts of our ear | outer ear, middle ear, inner ear |
| outer ear | what you see outside of your head |
| a tube in the middle ears opens when | your ears pop in an elevator or airplane |
| decibels | measure sound pressure |
| sounds over 85 decibels | could harm your hearing |
| pluck | how you move a guitar string or a rubber band |
| vibrate | move back and forth really fast |
| vibrations | produce sound |
| vocal cords | vibrate in your throat when you speak |
| fast vibrations | produce high plitch sounds |
| slow vibrations | make low pitch sounds |
