Core , The heaviest rocks are found here, and they are made up of iron and nickel. , mantle , makes up most of the planet. Parts of it are solid and other parts are made up of slow moving liquid, Crust , The outermost layer of the earth. Thing shell that has the lightest rocks. , Oceanic Crust , Found below the Oceans, Rocks are dense/heavy. Crust is thin, Continental Crust , Rocks are light. Crust is thick. Made up of SIAL , SIAL , Silica and Aluminium , Lithosphere , the outer part of the Earth , consisting of crust and upper mantle. It is the rock and crust surface , Ozone Layer , a thin part of the Earth's atmosphere that absorbs almost all of the sun's harmful ultraviolet light. , Continental Drift , Proposed by Scientist Alfred Wegener in 1912. He explained that the plates "drifted" across the planet over time. , Plate tectonics, The theory that Earth's outer shell is divided into large slabs of solid rock called plates, that move over the Earth's mantle. , Minor Tectonic Plates , The Caribbean Plate, Cocos plate, Nazca plate, Scotia plate, Philippine plate, Major Plates , African plate, Antartic Plate, Eurasian Plate , Indo-Australian Plate ,  North American plate, South American plate, Pacific Plate.

Plate Tectonics

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