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How do mountains form and continents move, why do earthquakes occur and volcanoes erupt? The theory of plate tectonics provides the answer to the causes of these grandiose phenomena. The Earth's crust beneath our feet is not as motionless as it may seem. The outer layer of the Earth, called the lithosphere, is divided into dozens of blocks - tectonic plates that "float" on the surface of the molten mantle. They constantly collide and push apart, forming mountains and giant faults, causing earthquakes and volcanic eruptions. This educational video will take us deep inside our planet Earth to learn how and why lithospheric plates move. We will also talk about the supercontinent called "Pangaea", Alfred Wegener's theory of continental drift and much more. Thanks for watching! Share your thoughts in the comments below the video and click the bell so you don't miss our new educational videos! #planetearth #educationalvideo #geography