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What is an ocean?
a large body of water
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What are ocean basins?
Ocean basins are topographically lower, compostionally simple, and relatively younger than continents.
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Oceans and seas cover how much of the Earth's surface?
they cover 70% of the earths surface
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How do we explore the ocean?
Ocean drilling, unmanned and manned vehicles, sonar(including multibeam), seismic profiling
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What are continental margins?
the area around continents where continental crust changes to oceanic crust
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What are the 2 continental margins?
Active and Passive margins
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What are active margins?
active margins have lots of activity, narrow next to trench, have earthquakes, volcanoes, and young mountains
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What are passive margins?
no earthquakes, no volcanoes, no mountains- found within plates not at a boundary
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