PPT-Plate Tectonics and Continental Drift

Processes that renew and recycle the Earths crust A review of the Earths structure The Theory of Plate Tectonics The theory was proposed by Alfred Wegener a G erman scientist in the early 20. Imagine the Earth as a hardboiled egg…………………….. The thin brittle shell is the crust that humans live on.. The thick jelly like white is the deep hot magma beneath the surface.. The yellow yolk is the core of the earth.. Earth habitable. ? . Earth is the only planet in the Solar System with plate tectonics. The outer crust of the Earth is broken up into regions known as tectonic plates. These are floating on top of the magma interior of the Earth and can move against one another. When two plates collide, one plate can go underneath another.. One Theories Journey . Continental drift -- One theory's journey. . Today, you might be laughed out of a geology course for questioning whether continents move through geologic time. But 75 years ago, only skeptics believed that continents could take a hike. Talk about conventional . Zachary Gallegos. University of New Mexico / Mars One. Mars Orbiter Laser Altimeter Map. Plate Tectonics. Lithospheric plates sliding on the asthenosphere, above the mantle. Exists on Earth. Theory proposed in the early 1900’s. . Chapter. 12-1. Pan-. gaea. . “. all. - earth. ” . Note: Our world today is actually a 2’nd or 3’rd generation “super continent” or “. pangea. ” !!!. . Alfred Wegener . Who proposed the theory called “Continental Drift”?. Alfred Wegener. What is Continental Drift?. A hypothesis that continents had drift or move apart.. What is Pangaea?. the “supercontinent”. Name all 7 continents. North America. South America. Africa. Antarctic. Australia. Europe. Asia. Pangaea. Pangaea is the name for the original super continent. Pan .  all. G. aea  Earth. The continents looked like they might fit together like puzzle pieces. Unit 12.1. These observations lead him to come up with the . ___________________________. A very long time ago (~200 million years) the continents were joined together in a . ___________________. called . www.iris.edu/ieb. Exercise: http://. www.iris.edu/hq/resource/african_mystery. How do earthquakes provide evidence of plate tectonics?. With a partner, choose a type of plate boundary:. Divergent. Convergent. Continental Drift. Wegener's Theory. : . From 1912, Wegener introduced the theory of “ continental drift ,” arguing that all continents were once joined together in a single landmass and have drifted apart.. Richard Palin, University of Oxford, UK;. M. Santosh, China University of Geosciences, Beijing (CUGB). University of Adelaide, Australia. Ortelius World Map . Typvs. Orbis . Terrarvm. , 1570.. Culmination of centuries of research. The thin brittle shell is the crust that humans live on.. The thick jelly like white is the deep hot magma beneath the surface.. The yellow yolk is the core of the earth.. Tectonic Map of the World. A tectonic plate is like the hard shell on a boiled egg that has been cracked into . http://www.sciencechannel.com/tv-shows/greatest-discoveries/videos/100-greatest-discoveries-continental-drift.htm. Restless Continents-pg. 248. Wegener proposed idea of . continental drift.. . -. C. http://sos.noaa.gov/datasets/Land/paleo.html. Animations. . On the move…. Plate Tectonics: . the rocky history of an idea. Ever notice that the shore lines of South America and Africa seem to fit together?.