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Transcript
Seafloor Spreading Mid-Ocean Ridge Seafloor Spreading Younger Rocks are found near the rift and older rocks are found near the continents Seafloor Spreading: A High Speed Animation • http://education.sdsc.edu/optiputer/flash/sea floorspread.htm Every several thousand years the Earth’s Magnetic Field flips Magnetic Reversals Great Discoveries: Harry Hess • http://science.discovery.com/tvshows/greatest-discoveries/videos/100greatest-discoveries-sea-floor-spreading.htm Subduction Zone- area where old crust is pushed back into the crust Subduction: So this is what happened to the old oceanic rocks • http://earthguide.ucsd.edu/eoc/teachers/t_te ctonics/p_subduction.html Trenches of the World Mariana Trench Lesson Learned What is seafloor spreading and how does this process help support the theory of continental drift?
