Why does Earth have a Magnetic Field?

Thanks for watching! Links to learn more about Earth's Magnetic Field: More on pole flips: http://www.geomag.bgs.ac.uk/education/reversals.html#top More on how Earth's magnetic field "The Geodynamo" forms: http://www.es.ucsc.edu/~glatz/geodynamo.html References: Cromie, William J. "Putting a New Spin on Earth's Core." Gazette. Harvard University, 15 Aug. 1996. Web. 20 Dec. 2014. http://news.harvard.edu/gazette/1996/08.15/PuttingaNewSpin.html Earth Magnetic Field Declination from 1590 to 1990. N.d. Wik

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