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Unit 7

Investigating 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 a large bowl shaped depression that holds ocean water; regions of crust below sea level
Oceanic crust thinner part of the 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 lithosphere plates meet
Sea-floor spreading formation of new oceanic crust due to the up welling 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: acration