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Plate Tectonics

LHS Plate Tectonics

QuestionAnswer
Theory of Plate Tectonics theory that states that Earth's crust is broken into huge slabs called plates
plate boundaries places where tectonic plates come together and interact
diverge to move apart
divergent boundary place where tectonic plates are moving apart
ocean ridge type of divergent boundary where new crust is formed
rift valley type of divergent boundary where two continental plates are moving apart
converge to come together
convergent boundary places where two tectonic plates are moving toward each other
continental-continental convergent boundary place where two continents come together to make a folded mountain chain
oceanic-oceanic convergent boundary place where two continents come together to make a volcanic island chain
oceanic-continental convergent boundary place where an oceanic plate and a continental plate come together to form a volcanic mountain chain
transform boundary place where two boundaries meet and move past each other in opposite directions parallel to each other
subduction zone another name for a convergent boundary
deep-sea trench formed at a subduction zone or convergent boundary in the ocean
San Andreas fault most famous transform boundary
Mount Saint Helens volcano in Washington state Cascade mountain range that erupted in 1980
Mantle Convection circulation pattern that occurs when hotter magma becomes less dense and rises while cooler magma becomes more dense and sinks
Seafloor Spreading the theory that the ocean floor crust is moving apart at ocean ridges and being recycled at deep-sea trenches
Continental Drift the theory that the continents were once connected in a super-continent called Pangaea and have slowly drifted apart from one another
Magnetic Reversal the idea that Earth's magnetic field has reversed directions several times during Earth's history; evidence that seafloor spreading is occurring
Created by: rhaugen
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