1._Intro_to_Geology - Geology 1403 1 Introduction to...

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Geology 1403 1. Introduction to Geology
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Why study geology? 1. Providing natural resources 2. Protecting the Environment http://www.nps.gov/grte/index.htm Grand Teton National Park
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3. Avoiding geologic hazards 4. Understanding our surroundings
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Theory - An explanation for observed phenomena that has a high probability of being true Hypothesis - a tentative theory
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Big Bang Theory Matter concentrated in one place & Universe ‘exploded’ ~13-14 BYA Big bang Film clip: 14 MY condensed into 18 seconds http://www.cfa.harvard.edu/seuforum/bb_popu Photo credit Msnbc.com
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Milky Way Galaxy Our Solar System is in the Milky Way Galaxy On the Orion Arm
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Nebular Hypothesis: Formation of our Solar System
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Movie Clip: Nebular Hypothesis http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::640::480::/sites/dl/free/0073
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Earth: “3rd Rock from the Sun”
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Origin of the Moon
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Origin of the Moon Film Clip http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::640::480::/sites/dl/free/007337671x/274
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How do we investigate the interior of the earth? Radius of the earth: 6370 km Deepest Mine: 3 km in Africa Deepest Well: 12 km in Russia Main evidence for earth’s interior comes from
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Seismic Waves Waves of energy produced by an earthquake or earth motion Fan out in all directions Can be used to study the earth’s interior
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Seismic Reflection waves Reflection waves bounce off a rock boundary
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Seismic Refraction Waves Refraction Rays bend, similar to light rays bending through eyeglasses or water
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This note was uploaded on 03/06/2012 for the course GEO 505 taught by Professor Johnschmidt during the Spring '12 term at CUNY Graduate School of Journalism.

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1._Intro_to_Geology - Geology 1403 1 Introduction to...

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