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Unit 10

Plate Tectonics

TermDefinition
Continental Crust Thicker part of Earth’s crust that forms the large land masses.
Convergent boundary Two plates coming together.
Divergent boundary two plates moving apart.
Geologic event a change to the structure of the Earth by tectonic activities.
Mid-ocean ridge undersea mountain range formed where two parts of the Earth’s crust are moving apart.
Ocean basin large bowl shaped depression that holds ocean water; regions of crust below sea level.
Oceanic crust thinner part of Earth’s crust that lies underneath the ocean basins.
Plate distinct sections of the lithosphere which make up the outermost layer of the Earth.
Plate boundary a region where two lithospheric plates meet.
Sea-floor spreading formation of new oceanic crust due to the upwelling of magma at mid-ocean ridges.
Subduction process where one plate slides under another.
Tectonics study of the movement of large masses of rock, known as plates, on the Earth’s surface; includes folds, faults, and plate movement.
Theory an explanation of a set of related observations or events based upon proven hypotheses and verified multiple times by groups of detached researchers; can be used to explain and predict natural phenomena.
Theory of plate tectonics theory that describes plate movement and how it affects Earth’s geologic features.
Transform boundary two plates sliding past each other in opposite directions.
Created by: Turnerr