Wave Properties
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Wave Properties

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    Wave Properties Wave Properties Presentation Transcript

    • Wave Properties
      Students will be able to
      Explain wave structure
      Contrast transverse and longitudinal waves
      Describe properties of a wave
    • What are Waves?
      Wave
      A disturbance that transfers energy from one place to another
      5
    • What Carries Waves?
      Medium
      The material through which a wave travels
      Examples: Liquids, Air, Solids…
      Mechanical Waves
      Waves that need a medium
      Examples: Water and Sound
      Electromagnetic Waves
      Waves that do not need a medium
      Light
      6
    • Transfer of Energy
      Mechanical waves travel in a medium
      but do not move medium
      6
    • What Causes Waves
      A source of energy causes medium
      to vibrate
      7
    • Types of waves
      Transverse waves (across)
      High point – Crest
      Low point – Trough
      8
    • Types of waves
      Longitudinal Waves
      Move medium in to direction of motion
      Compression = Come together
      Rarefactions = Spread out
      9
    • Representing Waves
      10
    • Three Properties of Waves
      Waves can have different amounts
      of energy
      1. Waves can be tall or short
      Amplitude
      2. Waves can occur often or rarely
      Frequency
      3. Waves can move fast or slow
      Speed
      11
    • Amplitude
      Maximum distance that the particles
      of the medium carrying the wave
      move away from the rest position
      12
    • Wavelength
      The distance between two
      corresponding parts of a wave
      13
    • Frequency
      Number of waves that pass a
      given point in a certain period
      of time
      Hertz
      # of waves / second
      13
    • Speed
      Lightning
      Light
      Sound
      Rumble
      Why?
      Light travels faster so it reaches you first
      Sound travels slower so comes later
      14
    • Speed
      Formula
      Speed = Wavelength x Frequency
      Others can be used
      Frequency = Speed / Wavelength
      Wavelength = Speed / Frequency
      14
    • Math
      15
    • Homework
      Draw and label a transverse and a
      longitudinal wave.