Lecture 25_Chapter33(F2008)

Lecture 25_Chapter33(F2008) - Plan Lecture25:Chapter33...

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1 Lecture 25: Chapter 33 Our Restless Planet Plan 1. The Architecture of Earth 2. Continental Drift 3. Plates Tectonics Theory Home Work: Chapter 33 Key Terms Review questions: 1, 2, 4, 7, 11, 16, 17, 19, Exercises: 1, 2, 3, 18 1. The Architecture of Earth e/Part5 e/P51 e/earth_struct e.htm
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2 Earth Structure (Ch. 32) Core: mostly compound of iron and nickel Inner core is solid because of huge pressure! Outer core is liquid, flows at very slow rate of several kilometers per year. This motion of metallic liquid creates lt i t th t t thEt h ti fi ld electric current that generates the Earth’s magnetic field. Mantle: a rocky layer that is about 3,000 km. Composed of hot, iron rich silicate rocks, the mantle behaves like a plastic. http://geology.com/nsta/earth internal structure.shtml Mantle Upper Mantle ± Lithosphere ± Asthenosphere Lower Mantle The lithosphere includes the entire crust and the uppermost part of the mantle. The lithosphere is more rigid and brittle than the athenosphere.
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This note was uploaded on 05/27/2011 for the course PSC 1121 taught by Professor Khankasayev during the Fall '08 term at Florida A&M.

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Lecture 25_Chapter33(F2008) - Plan Lecture25:Chapter33...

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