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Oceanography Vocab

6th grade -SMS - Oceanography Vocab Review

QuestionAnswer
continental landmass large land area rising above the ocean level
continental slope sharp drop-off going down to the ocean bottom
mid-ocean ridge huge underwater chain of mountains
seamount submerged volcano rising up from the sea floor
island peak of an undersea mountain which shows through the surface
guyot old and worn, flat-topped seamount, always under water
continental shelf gently sloping extension of he land mass, covered by a few hundred feet of ocean
abyssal plain large, very flat area on the ocean floor
rift valley huge crack in the middle of the undersea mountain chain
trench deepest parts of the ocean, where a valley is formed by sections of the earth's crust coming together
ocean basin lower parts of the earth's surface where the oceans are found
ocean floor bottom of the ocean basin
ooze organic sediment on the ocean floor
turbidity current moving water which carries mud and sand down a slope
red clay non-organic sediment on the ocean floor
submarine canyons huge cut in the undersea shelf and slope, caused by moving mud and water (underwater landslide)
sediment sand, gravel, clay and other materials which settle out of the ocean water and cover the ocean floor
plate tectonics theory that the surface of the earth isnot one solid shell, but is made up of seven huge pieces called plates
oceanography the study of the ocean
How much of earth is covered by oceans? 70-75 percent
How deep is the ocean floor? 4 - 5 kilometers
Created by: SimardRR on 2006-11-05



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