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Plate Tectonics

Flashcards to help you study for quiz

QuestionAnswer
what is sea-floor spreading? sea-floor spreading is a process that slowly adds new rock to the ocean floor.
plate boundaries where two plates meet
transform boundary two plates slip past each other in opposite directions (faults, earthquakes)
divergent boundary two plates move apart (midocean ridges, rift valleys)
convergent boundary two plates come together and collide (ocean trenches, mountains)
crust outermost layer of Earth
pangea the super continent in Wegener's theory of continential drift
what causes plates to move? circulating heat currents in the earth's mantle that cause the plates to move.
the lithosphere the earth's lithosphere is part of the mantle and the crust, made of solid rock, and is broken into separate sections called tectonic plates.
Wegener's landform evidence wegener used mountian ranges and coal beds to prove his theory.
Wegener's fossil evidence Wegener used the plant fossils and the mesosuarus fossils to prove his theory.
Wegener's climate evidence Wegener used glacier stratches and found fossils of tropical platnts in antarctica to prove his theory.
mantle layer of Earth just below the crust where convection currents drive plate movement
inner core deepest layer of the Earth, solid
outer core liquid layer that surrounds the inner core, the flow of magnetic materials in this layer causes the Earth's magnetic field
subduction oceanic plate is forced under a continental plate at a plate boundary
Created by: Mr.Chicvara
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