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University Primary School Champaign, IL January 13, 2011 Plate Tectonics How to Explain: Mountains, Volcanoes, Sea Floor Bathymetry Tectonic Plates Earthquake Epicenters Follow plate boundaries Plate Shapes and Seismicity Earth crust is very thin! Hard Boiled Egg - Egg Shell=Crust 2008 Earthquakes > M5.5 Global Seismographic Network How Many? Earthquake Magnitude and Equivalent Energy Comparisons A fence built over a fault… 1906 San Francisco Earthquake Fence Offset Earthquakes travel around the world. Seismometer Measures Earthquakes