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Earth's Interior

This is lesson about the inner layers of the Earth
by

Alan Sims

on 18 January 2013

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Transcript of Earth's Interior

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli Earth's Interior Crust Mantle Outer Core Inner Core 7 km
4 miles 40 km
25 miles Lithosphere - the rigid upper layer of the Earth consisting of the crust and upper mantle Asthenosphere - Is the solid layer of the mantle under the lithosphere that has fluid like characteristics 66% by mass
83% by volume Plasticity Capability
of
being
molded - liquid region of the Earth's interior that lies between the mantle and the inner core Viscosity - measure of resistance of a fluid Magnetic Field 750 F
400 C .5% mass 60% SIO2 - Quartz 930-7200 F
500-4000 C 44% O
20% Si
20% Mg 7950-11000 F
4400-6100 C 30.8% Ni and Fe 11000+ F
6100+ C 1.7% Ni and Fe Possibly gold, platinum
and other precious metals Solid metal Pressure is 3,500,000 Disrupt our modern society Protects
atmosphere
electronics
life
Full transcript