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Currents: a mass movement or flow of ocean water; like a river in the ocean ode=true&persist_safety_mode=1.

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Presentation on theme: "Currents: a mass movement or flow of ocean water; like a river in the ocean ode=true&persist_safety_mode=1."— Presentation transcript:


2 Currents: a mass movement or flow of ocean water; like a river in the ocean ode=true&persist_safety_mode=1 ode=true&persist_safety_mode=1 can be caused by wind, salinity, temperature, the Coriolis Effect, and the Sun 1HYFg&safety_mode=true&persist_safety_mode=1 1HYFg&safety_mode=true&persist_safety_mode=1 ocean currents flow in predictable patterns around the world the sun heats up the atmosphere creating winds

3 Surface Currents: move water horizontally at the surface powered by wind wind moves the ocean in huge circular patterns sailors use currents to sail more efficiently

4 Coriolis Effect: The Earth’s rotation affects ocean currents directly by causing currents to circle in opposite directions on either side of the equator. Earth’s rotation also affects the wind patterns, which in turn drive surface currents. Currents north of the equator turn right (clockwise) Currents south of the equator turn left (counterclockwise) ety_mode=true&persist_safety_mode=1 ety_mode=true&persist_safety_mode=1

5 rner/nemo.shtml CLOWN FISH

6 Gulf Stream Current: first mapped by Benjamin Franklin it runs along the east coast of the U.S. across the Atlantic to England up to 37 miles wide and 2600 feet deep the Gulf Stream influences the climate of western Europe carries warm water from the tropics to the higher latitudes ty_mode=true&persist_safety_mode=1 ty_mode=true&persist_safety_mode=1


8 | FUNDAMENTALS eBOOK HO ME FUNDAM ENTALS eBOOK UND ERST ANDI NG eBOO K GEO GRAP HY GAM ES GLO SSAR Y OF TER MS INT ERN ET WE BLI NKS SEA RC H SIT E ABO UT More Sharing ServicesShareMore Sharing ServicesShare | Share on facebook Share on myspace Share on google Share on twitterShare on facebookShare on myspaceShare on google Share on twitter Created by Dr. Michael Pidwirny & Scott Jones University of British Columbia Okanagan Email Corrections and Suggestions to: Copyright © 1999-2014 Michael Pidwirny 05/07/2009 15:20 Geography

9 Upwelling: occurs when wind causes the water at the surface to move perpendicular away from the coast and cold, deeper water rises and takes its place contains high concentrations of nutrients and improves fishing Upwelling occur during El Nino in the Pacific Ocean off the coast of Ecuador and Peru. 4&safety_mode=true&persist_safety_mode=1

10 Deep Current/Density Current: forms when a mass of seawater becomes more dense than the surrounding water gravity causes more dense water to sink beneath less dense water density of ocean water can change due to changes in SALINITY and TEMPERATURE. salinity can change due to evaporation and freezing The more salt it contains, the more dense it will be. The colder the water, the denser it will be. rue&persist_safety_mode=1


12 Longshore Current: current that runs parallel to the shoreline caused by waves colliding with the shore at slight angles these currents move tons of sediments and create sandbars y_mode=true&persist_safety_mode=1 y_mode=true&persist_safety_mode=1

13 Rip Current: a narrow, powerful current that runs perpendicular to the beach out into the ocean along the surface form at low spots or breaks in sandbars travel 1-2 feet per second A.K.A. “riptides” and “undertow” Why are the above names INCORRECT to use? hCZuYzNujI&safety_mode=true&persist_safety_mode= 1 hCZuYzNujI&safety_mode=true&persist_safety_mode= 1 eature=related&safety_mode=true&persist_safety_ mode=1 eature=related&safety_mode=true&persist_safety_ mode=1

14 Mr. Parr!!!!!!!!!

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