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waves, ((sound waves)), solar system - Coggle Diagram

- - - - Pressure waves transfer energy from place to place.
      - Sound with a frequency of more than 20,000 Hz is called ultrasound.
      - It is too high pitched for humans to hear, but other animals (such as
      - dogs, cats and bats) can hear ultrasound.
      - Ultrasound has many applications in medicine, including ultrasound
      - scans to check on the health of unborn babies.
      - Ultrasound can also be used for physiotherapy.
      - Ultrasound can be used to clean jewellery.
- - - - earth
        
        mars
        
        jupiter
        
        saturn
        
        uranus
        
        neptune
- - - - Where two waves meet, they affect each other. This is
      - called superposition.
      - Adding
      - If two waves meet each other in step, they add together and
      - reinforce each other. They produce a much higher wave, a
      - wave with a greater amplitude.
      - Cancelling
      - If two waves meet each other out of step, they cancel out.