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OCEAN CURRENTS AND CLIMATE

OCEAN CURRENTS AND CLIMATE. Ocean current - p ermanent or semi-permanent horizontal movement of surface water (the top 100m). Caused by: prevailing winds size and shape of ocean body they develop in (Gulf Stream) temperature and density of water coriolis force.

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OCEAN CURRENTS AND CLIMATE

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  1. OCEAN CURRENTS AND CLIMATE Ocean current - permanent or semi-permanent horizontal movement of surface water (the top 100m). • Caused by: • prevailing winds • size and shape of ocean body they develop in (Gulf Stream) • temperature and density of water • coriolis force Complete questions # 27, 28, 29 and 30 on page 69.

  2. Major World Ocean Currents

  3. Affect of cold ocean currents: • Cools the summer temperature. • Reduces precipitation - cooler air holds less moisture. • Affect of warm ocean currents: • Warms the winter temperature. • Increases precipitation - warmer air holds more moisture.

  4. Practical Examples – How is each location affected by ocean currents? • Cool summer temperatures • Surprising little precipitation despite being a coastal area

  5. Warm moist air brings high precipitation

  6. Explain why Cape Town, South Africa might have similar fog conditions as St. John’s NF? Warm and cold currents meet – the warm air rises above and condenses into fog.

  7. Australia has a fair amount of desert. Which coast would you expect it to be on, east or west? West – colder ocean current – colder air – less precipitation.

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