| A | B |
|---|
| shorter object | higher pitch, vibrates faster |
| longer object | lower pitch, vibrates slower |
| decibel | measure of sound level |
| echo locaton | bats and dolphins use it |
| vibrations | cause sound |
| hammer, anvil, stirrup | bones of the ear |
| tighter guitar strings | higher pitch than loose strings |
| balance | ears help with this sense |
| blowing a trumpet harder | makes a louder sound |
| sound travels faster in this | water |
| ear drum | vibrations of the air strike this |
| ear defenders or ear plugs | protect us from loud sounds |
| a sound gets quieter | as you get further from it's source |
