Geosphere, The solid parts of the Earth, like rocks and mountains, Tectonic plates, Large rocky pieces that cover the Earth and move slowly., Pangea, A huge supercontinent from long ago., Subduction, When one tectonic plate goes under another., Earthquake, Sudden shaking of the Earth's crust, Boundary, Place where two tectonic plates meet, Crust, Hard outer layer made of rocks and minerals, Mantle, Thick later directly below the crust, Inner core, Hottest layer made of solid iron and nickel

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