ES Lesson 5 Flashcards
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when magma tries to reach the surface, the crust starts to break apart forming.
mid ocean ridges
as magma cools down, this will lead to the formation of new sea floor.
sea floor spreading
low land region that forms where earth’s tectonic plates move apart, or rift.
rift valley
transform boundaries are also called
conservative boundaries
a transform boundary involving two mid ocean ridges
ridge-ridge transform boundary
formed by two collisions of two oceanic plates
mariana trench
a deep fissure in the ocean floor
trenches
an area where sediments from the ocean floor are added to the continental crust
accretionary wedge
an area where the oceanic crust sinks.
subduction zone
when magma reaches the surface, volcanoes are formed and magma escapes.
volcanic arcs
both plates stack up creating an uplift thick of crust. this process is called
convergent folding
formation of mid ocean ridges and rift valleys
divergent boundaries
conservative, related to divergent boundaries
transform boundary
subduction, formation of trenches and island arcs, convergent folding
convergent boundary