Plate Tectonics

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the earth's lithosphere is broken into pieces.

Where two tectonic plates slide past each other.

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

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

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

Name of the man who proposed the hypothesis was Continental Drift.

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

where two tectonic plates collide with each other.