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20 Cards in this Set
- Front
- Back
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Difference between oceanic and Continental crust |
Oceanic crust is found under the ocean floor, more dense, basalt Continental crust is found under landmasses, less dense, granite |
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Continental shelf |
Parts of Continental landmasses that are covered by shallow seawater |
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Ocean floor forming |
Mid-ocean Ridge |
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Abundant dissolved salts in ocean |
Chloride, sodium |
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Origin of oceans |
Comets and asteroids from space from brought elements to make water to earth Earth have elements to make water |
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Trenches forming |
Convergent plates. Oceanic plate subducts under Continental. This subduction causes trenches as it happens |
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Surface currents |
Warm surface currents=equator Cold surface currents=the poles |
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Pic |
Pic |
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Abundant elements in oceans |
Hydrogen and oxygen |
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Force that powers currents |
Wind |
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Ocean surface that brings warm water along the east coast of United States |
Gulf Stream |
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Ocean tides |
Gravity of sun and moon pull on the earth. Earth fluids moves according to moon and sun, but earth doesn't because it's gravity is pulling it down |
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Temperature, pressure and light change with depth in oceans |
Temperature decreases, pressure increases, more dense, sunlight lessens |
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Ocean surface currents that brings cold water along the west coast of United States |
California current |
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Seamount formation |
Underwater volcanic activity |
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Upwelling |
A vertical circulation in the ocean That brings cold deep water to the ocean's surface, nutrient rich |
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Pic |
Pic |
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Desalination |
Process that removes minerals from water |
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Volcanic islands |
Underwater volcanoes rise above ocean surface, erupts, lava cools and forms land |
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Necessity for fifth ocean |
Marine life and currents differ. Also, it helps people to know where they are in the world |
