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Waves By:Alyssa Zhao #530 (Electromagnetic Waves (Wavelength and…

- - - - A wave that travels along a surface separating 2 media
      - More than 1 kind
        
        S waves from earthquakes are surface waves
    - - Crest: highest point of the wave
      - Trough: lowest point of the wave
    - - A wave in which the vibration of the medium is parallel to the direction of the waves
      - P waves from earthquakes are longitudinal waves
  - - - Length of one cycle
    - - Wave Speed= Wavelength x Frequency
        Speed=
      - Mechanical waves travel at a constant speed for any given medium
        (A different medium can have a different constant)
    - - Periodic Motion
        
        Any motion that repeats at regular time intervals
      - Time required for one cycle to be completed
    - - Distance from a crest/trough and the rest position
    - - Number of waves per unit time
      - Often measured in Hertz (Hz)
        1 Hz=1 s^-1