Ocean Currents

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Ocean Currents

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Slide Content
  1. Ocean Waves

    Slide 1 - Ocean Waves

  2. Wave Energy

    Slide 2 - Wave Energy

  3. Wave Movement

    Slide 3 - Wave Movement

    • Water molecules move in a circular motion
    • Water energy moves in the direction of the wave
  4. Breakers

    Slide 4 - Breakers

    • When the wave approaches the coastline
    • Wave height increases and wavelength decreases
  5. Refraction

    Slide 5 - Refraction

    • Process by which ocean waves bend toward the coastline as they approach shallow water
  6. Undertow

    Slide 6 - Undertow

    • Water carried onto a beach by breaking waves is pulled back into deeper water by gravity
  7. Rip current

    Slide 7 - Rip current

    • Water from large breakers returns to the ocean through channels that cut through underwater sandbars that are parallel to the beach.
  8. Longshore current

    Slide 8 - Longshore current

    • A current running parallel to the shore caused by waves approaching the beach at an angle
  9. Tsunamis

    Slide 9 - Tsunamis

    • Giant seismic ocean waves.
  10. Tsunamis

    Slide 10 - Tsunamis

  11. Surface Currents

    Slide 12 - Surface Currents

    • Currents that move on or near the surface of the ocean and are driven by winds
  12. Deep Currents

    Slide 14 - Deep Currents

    • Cold dense currents far below the surface
  13. El Nino

    Slide 15 - El Nino

    • Every 3 to 10 years, surface water temperatures along the west coast of South America rise which effecting global weather
  14. La Nina

    Slide 16 - La Nina

  15. Homework

    Slide 17 - Homework