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Sound - Coggle Diagram

- - - - ex) whales communicate( low-pitch sound)
  - - - ex) cave
      - ex) summit of mountain
- - - - moves back and forth
        
        talk
        
        vocal cords
        
        hit the traingle
        
        metal vibrates
      - sound waves
        
        travel through air
        
        reach ear
        
        eardrums virbrate