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Details Title: Plate Tectonics Description: Plate Tectonics vocabulary (from study guide) Total Flash Cards: 8 Created: 04/17/2007 18:31:37	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Lithosphere Definition the outer part of the mantle and th crust; 50-100km thick; no clear edge Term Asthenosphere Definition a zone of the earth;s mantle that lies beneath the lithosphere and consists of around one-hundred km of deformable rock; softer than the lithosphere; no defined edges Term Convection Currents Definition the transfer of heat by the mass movement of heated particles into an area of cooler fluid Term Ocean Ridge Definition a long narrow elevation on the ocean floor Term Ocean Trench Definition a long, steep-sided, narrow depression in the ocean floor Term Island Arch Definition a volcanic island caused by oceanic-oceanic subduction Term Subduction Zone Definition a converging plate boundary where oe plate subducts beneath another, usually because it's denser; a trench is formed there; caused when an oceanic and a continental plate collide Term Transformation Fault Definition a fault that occurs where the edges of two plates slide past eachother (San Andreas Fault)