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Transcript
Journey to the Center of Earth Layers of the Earth • Crust • Mantle • Outer Core • Inner Core The Crust • • • • • Layer that we live on (Lithosphere) 5-25 miles thick Consists of cooled rock Thinnest layer of the earth There are 2 kinds of Crust: Continental (thicker) and Oceanic (thinner) Crust QuickTime™ and a Sorenson Video 3 decompressor are needed to see this picture. • Semi-liquid (magma) • 3000 km wide • softer closer to the surface (Asthenosphere) • Has convection currents that move the continental plates The Mantle The Mantle QuickTime™ and a Sorenson Video 3 decompressor are needed to see this picture. The Outer Core • Liquid, molten rock • Very high temperatures • Made of Nickel and Iron The Inner Core • • • • • Solid layer Solid because of high pressure Mostly Iron 6,000 degree Celsius. 2,100 km wide The Core QuickTime™ and a Sorenson Video 3 decompressor are needed to see this picture.
