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Sound Energy - Coggle Diagram

- - - - Nerve cells detect vibrations + change them => electrical signals
      - Nerves carry signals to brain
      - Brain interprets electrical signals as sound
    - - Contains 3 small bones which magnifies vibrations + passes them to Inner Ear
    - - Collects sound waves + direct them to eardrum
  - - - Can hear ↑ pitches/frequencies than humans
- - - - Strings vibrate to produce sounds
      - Factors Affecting Pitch
        
        Length
        
        Tension
        
        Thickness
    - - Sound produced by using mouth to blow through it
      - Factors Affecting Pitch
        
        Short air column => High Notes; ↑ Pitch + Frequency
        
        Long air column => Low Notes; ↓ Pitch + Frequency
    - - Most produce low pitched sounds
  - - - ↑/↓ vibrations => ↑/↓ sound respectively
- - - - Music player headphones
      - Noisy machines like air conditioners
      - Loud music
    - - Listening to >85 dB noises for prolonged exposure can result in damage to ears, which can lead to deafness
      - ↓ Work/Study Performance
      - Human Health
        
        High noise lvls can result in
        
        indigestion
        
        heart disease
        
        disruption of sleeping patterns
    - - Traffic
      - Construction sites
    - - Use carpets / curtains to reduce noise by 5 < x < 30 dB
      - Don't stand too close to rock bands; everytime dist. doubled, sound reduced by 6 dB
      - Wear ear muffs to reduce noise by 5 < x < 30 dB
      - Use noise barriers + quiet road surfaces to reduce traffic noise by 0 < x < 5 dB
      - Use double glazed windows to reduce noise by 0 < x < 35 dB
- - - - allow it to find food + 'see' where they are flying
      - Have poor sense of sight but good sense of hearing (1k - 110k Hz)
      - Produces high-frequency sound => reflects off insect + travels back to ears