Ocean Currents Chapter 16.1.

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Presentation transcript:

Ocean Currents Chapter 16.1

Ocean Currents Masses of ocean water that flow from one place to another.

Currents Two types of ocean currents: Surface currents Deep currents

Surface Currents Currents that ONLY move horizontally in the UPPER part of the Oceans surface Develop from friction between the ocean and the wind that blows across the surface.

Color your surface current map using the Key on your Surface Current Map! BLUE = Cold Current RED = Warm Current

Global Winds Create Currents Draw and Label a Global Winds Diagram according to this diagram. http://www.youtube.com/watch?NR=1&v=DHrapzHPCSA

Gyres Huge circular-moving current systems that are driven by the global winds. 5 main gyres!

Gyre Plastic Pollution

What if this was YOUR home?

Locate the 5 main Gyres on your surface current map Locate the 5 main Gyres on your surface current map. Label the Gyres on your map

Why? Great Britain and Alaska are at similar latitudes, yet Great Britain is about 25 degrees warmer than Alaska…

Ocean Currents and Climate Gulf Stream is a great example of bringing warmth to a high latitude. It brings heat from the equator region to areas more North and South

Deep Currents VERTICAL (up and down) currents of ocean water Caused by differences in water density Dense water SINKS LESS dense water RISES

Deep Currents A result of temperature or salinity changes temp = sinks density

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