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How much water covers Earths surface?
71%
Pacific ocean
*largest, deepest
Atlantic ocean
*half the size of the pacific
Indian ocean
*slightly smaller than the Atlantic
*located almost entirely in southern hemisphere
Artic ocean
7% of the size of the pacific
Bathymetery
Measurement of ocean depths and the charting of the ocean floor
Sonar
Transmits sound waves toward the ocean bottom creating a profile
Submersibles
Small underwater craft used for deep sea research
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