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Oceanography:Waves. Leone Vorster. What A re They?. Waves are actually energy. Energy, not water, moves across the ocean's surface Tsunamis result when underwater earthquakes and volcanic eruptions disrupt the water's surface A wave's size and shape reveals its origins

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Oceanography waves

Oceanography:Waves

Leone Vorster


What a re they
What Are They?

  • Waves are actually energy. Energy, not water, moves across the ocean's surface

  • Tsunamis result when underwater earthquakes and volcanic eruptions disrupt the water's surface

  • A wave's size and shape reveals its origins

  • No two waves are identical, but they all share common traits



Traits of ocean waves
Traits of Ocean Waves

  • Crest: The highest part of the wave above the still-water line.

  • Trough: The lowest part of the wave below the still-water line

  • Wave Height:The vertical distance between the crest and the trough. 

  • Wavelength: The horizontal distance between each crest or each trough.   


Traits of ocean waves1
Traits of Ocean Waves

  • Still-Water Line:The level of the ocean if it were flat without any waves.

  • Wave Period:The time it takes for two successive waves to pass a particular point.

  • Wave Frequency:The number of waves that pass a particular point in a given time period.

  • Amplitude:The amplitude is equal to one-half the wave height or the distance from either the crest or the trough to the still-water line.



  • Wave size
    Wave Size

    • Beaufort Wind Force Scale

    • The size of a wave depends on:

      • The distance the wind blows (over open water) which is known as the "fetch”

      • The length of time the wind blows

      • The speed of the wind.

    • The greater these three, the larger the wave.


    3 most dangerous waves
    3 Most Dangerous Waves

    • Cyclops (remote south coast Western Australia)


    3 most dangerous waves1
    3 Most Dangerous Waves

    • Teahupoo (Tahiti)


    3 most dangerous waves2
    3 Most Dangerous Waves

    • Shipsterns(Tasmania, Australia)


    Extra wave information
    Extra Wave Information

    • Wave Simulator

    • Enchanted Learning – Tsunami

    • Powerful Ocean Waves Video

    • Ocean Waves – Sustainable Energy


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