1. Earth’s Structure Will K, Andrew B, and Jack R

2. 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

3. Mantle Mantle: Thick rocky layer around the core 3,300 degrees Fahrenheit Solid but able to flow

4. 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

5. Earth’s Atmosphere Atmosphere: a thick layer of gases in the air Holds heat from the sun This makes life possible

6. Water Makes up 75% of Earth 97% is Ocean 3% is fresh water

7. Land Landforms: shapes and types of land Make up 25% of Earth Landforms include mountains, volcanoes, and plains

8. Work Cited "5 Oceans of the World.", List, News, What You Should Know. Bear Systems Publishing, n.d. Web. 16 Sept. 2013. Baris Simsek. "First Measurement of Magnetic Field in Earth's Core." ScienceDaily. ScienceDaily, 19 Dec. 2010. Web. 13 Sept. 2013. 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. Kerls, Brian. "Mountains + Landscapes." Brian Kerls Photography RSS2. N.p., n.d. Web. 16 Sept. 2013. "Layers of the Atmosphere Mouseover the Pictures and Scroll down to Learn More." Layers of the Atmosphere. N.p., n.d. Web. 16 Sept. 2013. "Mantle Convection." Wikipedia. Wikimedia Foundation, 16 Sept. 2013. Web. 16 Sept. 2013. "Nature’s Water Cycle « The Underspace - Home of Underground Focus Magazine." The Underspace Home of Underground Focus Magazine RSS. N.p., 22 Oct. 2012. Web. 16 Sept. 2013. "Transit of Venus, Sun-Earth Day 2012." Earth:. NASA, n.d. Web. 12 Sept. 2013 Whitwam, Ryan. "ExtremeTech." ExtremeTech. N.p., 3 Oct. 2012. Web. 16 Sept. 2013.