Download - Global Currents and Winds
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Global Currents and Winds
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Ocean Currents Influenced by:•Weather/Wind• Positions of the continents• Rotation of the Earth• Sun, Salinity, Density
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Surface Current
•Streams of ocean water moving at the surface•Can stretch for hundreds of miles•Controlled by winds, Coriolis Effect and land masses
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Deep Currents • Controlled by temperature and density of water• More when cold and higher salinity (amount of salt in the water)• Flow deep, under the surface currents
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Global Winds •Caused by uneven heating of the Earth by the Sun•Wind patterns cause friction against the water which pushes it
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Continental Deflection
• Currents can change direction when they meet the continents
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Upwelling •Land masses force deeper current upward
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Coriolis Effect • Earth’s rotation causes winds and currents to move in curved paths instead of straight lines
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Currents and Climate •Warm currents
create warmer climates in coastal areas
•Cold currents create cooler climates in coastal areas
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Currents and Climate
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What areas may be warmer due to ocean currents?
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What areas may be cooler due to ocean currents?
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Gulf Stream •Warm surface current in Atlantic Ocean•Flows from Florida area to Northern Europe
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Jet Stream •High altitude winds that can steer weather systems•Do not follow regular paths around the Earth
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