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Sound - Coggle Diagram

- - - - a lot of energy
        ex) jackhammer, car horms, siren
    - - less energy / travel not so far
        ex) mouse squeaking sound, ticking watch/clock, whisper
- - - - heat or light
- - - - vibrates slowly (string)
- - - - how whales communicate in ocean (low pitched soun)
    - - bounces off and comes back
        ex) bats hunt, echos in the mountains