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Transcript of Plate tectonics
-Made the theory of the continental drift
-Was a meteorologist ond geologist
-Born November 1,1880
-Died November 2or3,1930 - Earthquakes occur when the plates go into
each other and pull away from each other. * Discovered by Harry Hess - The plates are constantly moving around in the
lithosphere. - The constant movement of the plates
makes the Earth shake. *Process in which the ocean floor is extendd when two plates move apart. - Pangaea is the theory that all the continents were
connected as one supercontinent. Pangaea watch the video and there causes * Magma rises through the cracks and seeps out onto the ocean floor - They slowly moved away to form the continents we have today. - The Earths gets heated and convection currents in the magma keeps
dragging the plates. - Plate tectonics lay on the lithosphere and float
on the liquid mantle.
SMFSDSDMF.DSM - Plate tectonics are constantly moving, when they
come in contact with each other, they create - This explains montains, volcanoes, and other
natural disasters certain events or create some sort of land form HARRY HESS IS THE MAN WHO DISCOVERED THAT THERE WAS SEAFLOOR SPREADING IS WHAT CAUSING THE SEA TO PRODUCE NEW ROCKS. Continental Crust Rocks found in the continental crust is called sial. Oceanic Crust rocks which are claaled sima Oceanic Crust