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Earth's geography

Across
A plate boundary where two plates move away from each other (also known as divergent boundary)
The process of which mol ten material adds new oceanic crust to the ocean floor
A deep valley that forms where two plates move apart
The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary
A plate boundary where two plates move past each other in opposite directions (also known as transform boundary)
The theory that pieces of earth's lithosphere are in constant motion, driven by convection currents in the mantle
The movement of fluid that transfers heat from one part of the fluid to another
Down
A plate boundary where two plates move towards each other (also kwon as convergent boundary)
This important land feature in Africa created by shifting tectonic plates
Alfred Wegner named the landmass that broke apart years ago and gave rise to the continents
A sectio n of the Lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust
A break in the earth's crust