Unit 11 Plate Tectonics

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The boundary between two plated that slide pass one another; sudden shifts result in major geological events such as earthquakes and the release of stored energy

The boundary between two tectonic plates moving away from each other; on land creates rift valleys, on the sea floor created new ocean crust

Occurs when one plate is denser than another and is forced below as the two plates converge at their boundary

Major geological events that occur when a dense plate subducts below a less dense plate as they converge

Huge pieces of lithosphere that slowly move on the asthenosphere, and consist of the crust and the rigid, upper most part ofthe mantle

Major geological events that occur when plates shift suddenly and release stored energy; a frequent occurrence at transform boundaries

Theory that the lithosphere is divided into tectonic plates that slowly move on top of the asthenosphere

The boundary between two tectonic plates moving toward each other; results in volcanic activity when a denser ocean plate subducts below a continental plate or mountain building