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Earth’s Core • Core: a sphere of hot metal at the
center of Earth • 5,000 degrees Fahrenheit • Inner core is solid, but the outer
core is hot liquid metal
Mantle
• Mantle: Thick rocky layer around the core• 3,300 degrees Fahrenheit • Solid but able to flow
Crust • Crust: Thin layer of rocks and minerals
that surrounds the mantle • Thin in the ocean• Thick under mountains • Heat and movements in the mantle change
the formation of the crust
Earth’s Atmosphere
• Atmosphere: a thick layer of gases in
the air • Holds heat from the sun • This makes life possible
Land
• Landforms: shapes and types of land • Make up 25% of Earth • Landforms include mountains, volcanoes, and
plains
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BBC News. BBC, n.d. Web. 16 Sept. 2013
"Bēhance." Behance. BBC, n.d. Web. 13 Sept. 2013.
Chu, Gregory H., Susan Hardwick, Don Holtgrieve, and Grant P. Wiggins. "Earth's Structure." Pearson My World Geography :. Boston,
MA: Pearson, 2011. 22-23. Print.
"Desert Ecology of Tucson, AZ." Desert Ecology of Tucson, AZ. N.p., n.d. Web. 16 Sept. 2013.
"Earth’s Atmosphere: The Tropopause and the Troposphere." Artinaid. N.p., Apr. 2013. Web. 16 Sept. 2013.
Herndon, J Marvin. "No Earth-Core Convection." No Earth-Core Convection. N.p., n.d. Web. 16 Sept. 2013.
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2013.
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Whitwam, Ryan. "ExtremeTech." ExtremeTech. N.p., 3 Oct. 2012. Web. 16 Sept. 2013.