PPT-Continental Drift: Alfred Wegener

httpwwwsciencechannelcomtvshowsgreatestdiscoveriesvideos100greatestdiscoveriescontinentaldrifthtm Restless Continentspg 248 Wegener proposed idea of continental drift C. 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. Pangaea. Nearly 100 years ago, Alfred Wegener began an investigation that continues even today. . He wanted to know if Earth’s continents were in fixed (non-moving) positions.. He proposed that all the continents were once part of a supercontinent called Pangaea.. 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.. . Continents . (pages. . 136–140). Continental. . Drift. . (pages. . 137–139). Key. Concept:. . Alfred. . Wegener’s. . hypothesis. was that. . all the continents were once joined together in a. and . Seafloor Spreading . Notes. Part 1. Alfred Wegener. and the. Continental Drift. hypothesis. Up until the early 1900s, long-held tradition in the earth sciences stated that continents have remained in fixed positions throughout geologic time. . 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. 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.. 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. . “What are tectonic plates?. Classifying the Layers. There are two ways to classify the layers of the Earth:. Compositional. (Chemical): classifies based on chemical properties (. ie. : elements). Physical. • 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 .