Tectonic plants often shift position by the force of liquid rock emerging from below the earths surface and then cooling to form hard rock? the most often occurs along coastlines in mountain chains on the ocean floor during earthquakes

Tectonic plates often shift position by the force of liquid rock emerging from blow the earth's surface and then cooling to form hard rock. This most often occurs On the ocean floor.

When tectonic plates move, They move along the ocean floor, which is the crust, and It cause earthquakes and volcanoes and also caused Pangaea to break apart and become what it is now, The seven continents.

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the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.