PPT-The Theory of Continental Drift

The World ALFRED WEGENER THEORY OF CONTINENTAL DRIFT Found evidence for PANGAEA and proposed the theory of continental drift Continental Drift Theory Theory that continents were once part of a single landmass 200 million years ago that broke apart and have moved to their present locations . Definition. The very slow movement of the continental plates on the surface of the Earth due to tectonic activity through geological time.. What is the evidence of Continental Drift?. Continental Fit. In 1812, Alfred Wegener presented his scientific theory called “Continental Drift”. It was based on his belief that the continents had drifted apart from one another.. Pangaea. Wegener ‘s hypothesis was that all the continents had once been joined together in a single landmass and have since drifted apart.. Continental Drift. Objectives. Summarize Wegner’s hypothesis of continental drift. Describe the process of sea floor spreading. Identify how paleomagnetism provides support for the idea of sea floor spreading. 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 . . 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”. Ahead of its Time. It has been recognized for along time that coastlines of South America and Africa appear to fit together. Still it is another feature of Geology where direct information had been missing, and the thinking of individuals were much different.. Ahead of its Time. It has been recognized for along time that coastlines of South America and Africa appear to fit together. Still it is another feature of Geology where direct information had been missing, and the thinking of individuals were much different.. 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. Warm Up. 1. What is the thickest layer of the Earth? . 2. What is the thinnest layer of the Earth?. 3. What happens to temperature as the depth within the Earth increases? . 4. What happens to the density as the depth within the Earth increases? . 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 . T. he . E. vidence . F. or . C. ontinental Drift.. Tyler Young . Amesbury 4. th. . Sep. 21, 2015. Alfred Wegener . Alfred . Lothar. Wegener (. nov. , 1, 1880 . -. 1930) was a German polar researcher, geophysicist and meteorologist.. 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. • About evidence for plate movement from the sea floor . • How scientists developed the theory of plate tectonics. Continents change their position over time (Page 14). *Key Concept. BEFORE, you learned .