PPT-P1 – Seafloor spreading

Today you need to know Explain what evidence there was to support the theory of continental drift suggested by Alfred Wegener Explain why the scientific community did not accept his theory Understand how seafloor spreading provided further evidence that his theory was correct. 9. Mid-Ocean Ridges. Dax Soule. OCEAN/ESS 410. Mid-Ocean Ridges. Dax Soule. Modern Map. What makes these so different? . From MacDonald 1982. Learning Goals. Be able to sketch the structure of fast and slow spreading mid-ocean ridges and describe how they . S. eabottom. . B. iosphere. “It just screamed out that there had to be some kind of microbial community there to exploit the energy involved in this water–rock . reaction”. Introduction to C-DEBI:. Check your notes for . key ideas!. 1. Mid-Ocean Ridges.  . . An . underwater mountain . range stretching all over Earth.. . Scientists . used sonar to map the ocean . floor. Mapping the mid-ocean ridge made scientists more curious about what is happening . What do you think?. Recall. :. Theory of Plate Tectonics…. Plate Tectonics . refers to the movements of plates (large segments of continents and ocean) around the Earth’s surface.. These land masses are seen as a giant . Tamm. , . Raivo . Vettik. , Taavi . Võsa. Innovative Technologies for spreading . of . manure. Manure as Material. C. lassification. . is. . by. :. a. nimal. type. - . cattle. , . pig. , . bird. , . Acts 8: 26-40. Philip Obeying God and Spreading the Gospel Acts 8:26-40. Philip from Caesarea prior events in Acts 1-8?. He lived there ~20 years later per Acts 20.. Philip went back to Jerusalem to apostles?. 8 September 2014. Tallest Mountain on Earth. Mauna Kea Mount Everest. Seafloor is Dynamic. Mariana Trench: deepest part of the ocean (11,000m). Average ocean depth ≈ 3,700 meters (m). Seafloor is Dynamic. Frequency Hopping. Direct Sequence. 1. Shannon’s Theorem and . Nyquist’s. Theorem. . . channel capacity, . [. bps. ]. . channel . bandwidth, [Hz].. . SNR is the signal-to-Noise . ratio [. Unitless. Evidence for Plate Tectonics. Changes in Sea Floor Magnetism. Evidence for Plate Tectonics. Continents fit together like a puzzle. Changes in Sea Floor Magnetism. Evidence for Plate Tectonics. Fossils of plants and animals of the same species found on different continents. . Drifting Continents. Sea-Floor Spreading. The Theory of Plate Tectonics. Plate Tectonics. Piecing It All Together. The coastlines of some continents seem to fit. together like a jigsaw puzzle.. Drifting Continents. Subduction. Fun Fact: The tallest mountain in the world is…. Not Mt. Everest (29,028 ft). It’s Mauna Kea in Hawaii! (31,000 ft) . It doesn’t get as much attention because 2/3 of it is underwater. the 2011 Tohoku Earthquake detected by GPS/acoustic geodetic observation. Tadashi Ishikawa. Hydrographic and Oceanographic Department. Japan Coast Guard(JCG). UNAVCO 2012 Science Workshop. Mar. 1, 2012. Harrisburg, PA: Wild Resource Conservation Fund, 1995. Pennsylvania Endangered Plant Species State Rank: S1 (critically imperiled), Global Rank: G4 (apparently secure) T3 (vulnerabl By: April Carlisle and Stephen Loucks. Harry Hess. The surface of this planet is not fixed as it seems but rather broken up like pieces of a jigsaw puzzle. There are enormous plates that move under Earth, this process is called plate tectonic, and it transformed the thinking of geologist everywhere. One of them, Harry Hess, was a factor in figuring out how plate tectonics worked. .