Wave Properties
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Wave Properties

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Wave Properties Presentation Transcript

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