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PLATETECTONICSYOUNG
PLATE TECTONICS VOCABULARY
Term | Definition |
---|---|
TECTONICS | study of the movement of large masses of rock, known as plates, on the Earth’s surface; includes folds, faults, and plate movement |
CONTINENTAL CRUST | thicker part of Earth’s crust that forms the large land masses |
CONVERGENT BOUNDARY | two plates coming together |
SEA FLOOR SPREADING | formation of new oceanic crust due to the upwelling of magma at mid-ocean ridges |
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 |
TRANSFORM BOUNDARY | two plates sliding past each other in opposite directions |
THEORY OF PLATE TECTONICS | theory that describes plate movement and how it affects Earth’s geologic features |
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 |
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 |
SUBDUCTION | process where one plate slides under another |
PLATE BOUNDARY | a region where two lithospheric plates meet |