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Plate tectonics

Mid-ocean ridge In 1960 Harry Hess discovered huge cracks in the ocean crust
Sea floor spreading Along the mid-ocean ridge magma rises through the crust hardened and creates new land
Plate tectonics Explains the formation and movement of the Earth's plates
Plate boundaries Where two plates meet
Transform boundaries Two plates slip past each other in opposite directions Causes faults, which breaks in Earth's crust Earthquakes are common in these areas
Divergent boundaries Two plates move apart In the ocean this forms mid-ocean ridges -place where magma comes up through the ocean 's crust On land Rift Valley's
Convergent boundaries Two plates come together and collide In the ocean this causes ocean trenches to form On land mountains form
Created by: 15rvingelli