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The Layers of the Earth


Christy Gaddis

on 12 September 2012

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Transcript of The Layers of the Earth

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli The Layers of the Earth By: Haley Gaddis The crust is 5-100 kilometers The Crust It has two parts- the continental crust and oceanic crust The crust is 0 degrees Celsius to 1,000 degrees Celsius The crust takes up 1% of the earth's mass The crust is made up oxygen, silicon,aluminum, iron, calcium, magnesium Mantle 1,000 degrees Celsius to 3,700 degrees Celsius 2,900 km thick 67% mass Made up of magnesium, aluminum, silicon Under the crust Two layers: asthenosphere, and mesosphere Asthenosphere 250 km thick The plastic layer Beneath the lithosphere A soft solid Above the mesosphere Lithosphere Inside of the crust
Is solid and brittle 15-300 km thick least dense layer Outermost layer Mesosphere Beneath the asthenosphere 2,550 km Very hard solid Above the outer core The 3rd densest layer Radius of 3,430 Two layers: inner and outer core Core Takes up 33% of earth's mass 3,700 degrees Celsius to 7,000 degrees Celsius Has the greatest density
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