| A | B |
|---|
| Decibals | Used to measure sound |
| Pitch | The rate and frequency of sound vibrations |
| Rate | Means how fast |
| Frequency | Means how often |
| Volume | The amount of energy in sound |
| Sound Source | Where sound comes from |
| Sound Receiver | Where sound is received |
| Two examples of a Sound Source | Car Alarm. Recess Bell |
| Two examples of Sound Receivers | Ears. Telephone. |
| How many decibals are in a whisper? | 10 decibals |
| How many decibals are in a 3rd grade science class | 50 decibals |
| How many decibals does a jackhammer make | 100 decibals |
| Hearing loss can be caused by... | Long time exposure to over 90 decibals |
