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Physical Geography

Physical Geography. humanities.ucsd.edu/.../ kuchtahum4/pix/earth.jpg. The Earth is about 4.6 billion yrs. old. II. Composition of the earth inner core, outer core, mantle, and crust (land and oceans) . INNER CORE. OUTER CORE. CRUST. MANTLE.

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Physical Geography

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  1. Physical Geography

  2. humanities.ucsd.edu/.../ kuchtahum4/pix/earth.jpg • The Earth is about 4.6 billion yrs. old.

  3. II. Composition of the earth inner core, outer core, mantle, and crust (land and oceans) INNER CORE OUTER CORE CRUST MANTLE www.spacedaily.com/ news/carbon-00e.html

  4. III. Internal Forces 1. Continental Drift 250 million yrs. ago the continents were one giant landmass called PANGEA over time plates drifted away or collided wrgis.wr.usgs.gov/docs/ parks/pltec/pangea.html

  5. bhc.edu/.../study/ Images/platetectonics.gif 2. Tectonic Plates form the crust; are constantly moving; and cause changes to the earth’s surface when they make contact continents are on plates

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