| A | B |
|---|
| Vibrations cause | sound |
| To make sound | something has to be moving |
| sound waves travel | in all directions |
| sound waves start | with a vibration |
| Why do you see lightning before you hear thunder | because sound travels slower than light |
| Sound can be absorbed by | soft materials |
| Sound can be | reflected (or bounced back) |
| When sound is reflected off of something and comes back to your ear it is called | echo |
| the highness or lowness of a sound is its | pitch |
| the loudness or softness of a sound is its | volume |
| As the vibrations of an object increase in strength the sound gets | louder |
| The hammer, anvil, and stirrups are | three bones in your ear that vibrate. |
| The slower the vibrations, | the lower the pitch |
| The faster the vibrations, | the higher the pitch |
| The part of your ear that we seeis your | outer ear |
