Plate Tectonics

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one edge of a crustal plate is forced downwards into the mantle below another plate (crust is destroyed here).

The hypothesis that the continents were once joined as one super-continent.

Where two tectonic plates slide past each other.

process in which new ocean floor is created as molten material from the mantle rises between plates.

the earth's lithosphere is broken into pieces.

underwater mountain range formed by plate tectonics.

where two tectonic plates collide with each other.

a region circling the Pacific ocean that has lots of volcanoes.