| A | B |
|---|
| sound | energy in the form of vibrations causing this sensation |
| vibration | to move back and forth rapidly |
| pitch | the highness or lowness of sound |
| volume | the loudness or softness of sound |
| echo | reflected sound |
| communication | to share information, ideas, or feelings with another person by talking, writing, etc. |
| vocal cords | special flaps of muscle that vibrate when you talk |
| larynx | the upper part of the windpipe, where the vocal cords are; voice box |
| eardrum | a membrane inside the ear that vibrates as sound strikes it |
| deaf | not able to hear |
