Ch 2 Marine Science Cambridge

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estuary

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enclosed tidal costal body of water were fresh water meets salt water

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littoral zone

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the benthic zone between the highest spring tide mark and lowest spring tide mark

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earthquake

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a suden release of energy in the earth that creates sesmic waves,caused by movement of techtonic plates or volcano eruptions

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crust

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the first layer of rock on the earth

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mantle

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the layer of molten rock between the core and the crust

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core

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the dense central region of the earth

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oceanic crust

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the dense basaltic layer of crust that makes up the bottom of the ocean basins

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continental crust

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the thicker less dense crust that makes up the bottom of the ocean basins

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continental crust

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a theory supporting the possibility that continents are able to move over earth's surface

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plate tectonics

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the process where large sections of the earth crust are in constant movement over the fluid mantle, causing earthquakes and volcanoes at the borders between the plates