Earthquakes and Logarithms Earthquakes are responsible for a wast majority of natural hazards on our planet. This natural geological phenomena are almost impossible to predict‚ and they occur usually in zones of the planet that are prone to movement in the uppermost crust of the earth. Certain areas are more likely to experience earthquakes‚ and also the aftermath of the earthquakes can be just as destructive or sometimes even more. Different methods of measuring earthquakes have been implemented
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Short Paper: Mantle Convection‚ The Forces Behind Plate Motion PHSC 210-Spring B Term‚ Elements of Earth Science February ‚ 2014 Short Paper: Mantle Convection‚ The Forces Behind Plate Motion Introduction The paper is about plate mantle convection‚ the forces behind plate motion. Lutgens & Tarbuck (2014) found “Convection is a type of heat transfer that involves the actual movement of a substance” (p. 177). Plate mantle convection is described by Merriam-Webster’s
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the future we might be able to produce a better hypothesis with newer technology. All oceanic and continental plates move within the lithosphere‚ which is the outermost shell of the planet. The lithosphere has more strength than the underlying asthenosphere allowing the tectonic plates to move. Seafloor motion away from the spreading ridge and drag at the subduction zones is a theory for plate movement. The tidal forces of the sun and moon and the forces generated by the rotation of the globe is another
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GENERAL GEOLOGY - GEOL 1113 EXAM I WITH ANSWERS - Spring 2002 Below you will find the questions and answers for Exam I in my General Geology class. The correct answer for each question is highlighted in bold face green type. While you are reviewing the exam‚ pause at the questions you find you missed and try to understand why you missed them. Really understanding this will require not only that you understand why your answer is incorrect‚ but also why you chose it in the first place. Were you confused
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made up of nickel and iron * Outer core is made of a liquid molten core of nickel and iron * Mantle is made up of dense and mostly solid silicate rock * Lithosphere is the uppermost layer (100km thick) * Asthenosphere is the layer below the lithosphere (100km -660km) * Crust is thin silicate rock material on top 3. Pangaea is the proposed supercontinent that 200 million years ago supposedly began to shift apart and form our present continents. Alfred
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Chapter 1: Geology is the science that studies the history of Earth and its life. Anthropogenic (human generated) activities such as fossil fuel combustion impacting Earth has led to the study of Earth as a series of systems (series of components that interact to produce a larger‚ more complex whole). Geology is the science that examines the evolution of the natural processes on Earth‚ the evolution of life and the evolution of these interactions and how they caused the earth to evolve towards its
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crustal material was formed by volcanic eruptions by the crest of mid oceanic ridges and therefore slow lateral movement of the crust away from the ridges was occurring. 7. Divergent plate margins occur where rising convention currents in the asthenosphere almost reach the
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1. Introduction People tremble when they hear the word; destruction‚ mayhem‚ and tragedy: all words that come to mind when “earthquake” is heard. They occur without warning and cause millions of dollars in destruction and numerous deaths. For these reasons and more‚ earthquakes are one of the most unpredictable and devastating occurrences Mother Nature dishes out. Earthquakes usually occur without warning. There is a sudden slip in the earth’s crust‚ which makes the earth shake causing mass destruction
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Hydrothermal Vents In 1977‚ Robert Ballard and J.F. Grassle of the Woods Hole Oceanographic Instution‚ were diving in Alvin near the Galapagos Islands when they discovered rocky chimneys up to 20 meters high. These chimneys were emitting dark‚ mineral-laden water that reached temperatures of 350 degrees Celsius. The occupants of Alvin had discovered the first documented hydrothermal vent. These vents are formally defined as "springs of hot‚ mineral- and gas-rich seawater found on some oceanic
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Continental drift is the idea that the earth’s continents are drifting away‚ relative to each other across the ocean bed suggested by Alfred Wegner as part of his wider theory on plate tectonics. The plate tectonic theory suggested by Alfred Wegner in 1915 was that millions of years ago all the continents were joined together in one mass of land called ‘Pangaea’‚ the evidence for this was that coal was found on Antarctica‚ the shape of Africa and south America fit together and same fossils were
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