Science Chapter 13-Plate Tectonics


Question Answer
The study of the formation and movement of plates Plate Tectonics
A rigid, but broken, solid earth layer Lithosphere
A partially melted earth layer that the plates rest on Asthenosphere
The theory that each continent formed one solid, larger continent Continental Drift
Where most earthquakes occur and where most of Earth's volcanoes are Plate Boundaries
A measure of the amount of heat leaving the rocks of the lithosphere Heatflow
Places where two lithospheric plates are moving apart. Also called spreading centers Diverging Boundaries
Boundaries between the lithospheric plates and the place where new rocks form and push older oceanic crust aside Rift Valleys
Faults that break up rift valleys along a ridge Fracture Zones
Breaks or .s in the crust in which movements have occured Faults
When two plates come together or converge Converging Boundary
A conversion boundary that welds two continents into a single, larger continent Collision Boundary
A conversion boundary that occurs when one plate plunges down under another overriding plate Subduction Boundary
Ancient continent cores Cratons
Deep-sea sediments, volcanic rock, and sediments deposited by rivers are examples of ___. Growth Material
The pushing of thin, horizontal sheets of rock from continental margins over great distances along nearly level fault surfaces Thin-Skinned Thrusting
Large blocks of lithospheric plates that have been moved thousands of kilometers, and have attached to the edges of a continent Terranes



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