which underlies the ocean basins and covers 71% of earth’s surface Moving Tectonic Plates * Convection cells or currents move large volumes of rock and heat in loops within the mantle like giant conveyor belts * Flows of energy and heated material in the mantle’s convection cells cause tectonic plates to move extremely slow along earth’s surface * They float on an underlying sea of magna * Plates are composed of the continental and oceanic crust the lithosphere * Typical speed
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Cited: Plate Tectonics. (2005‚ April 28). (Nasa) Retrieved May 13‚ 2012‚ from Earth floor: http://www.cotf.edu/ete/modules/msese/earthsysflr/plates4.html Arctic Refuge drilling controversy. (2011‚ April 2). (Wikimedia Foundation Inc.) Retrieved May 13‚ 2012‚ from Wikipedia: http://en.wikipedia.org/wiki/Arctic_Refuge_drilling_controversy Alfred Wegener. (2012). Retrieved May 13‚ 2012‚ from eNotes: http://www.enotes.com/alfred-wegener-reference/alfred-wegener Glasscoe‚ M. (1998‚ September 8). Plate boundaries
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Geological Hazards Plate Tectonics- Theory Alfred Wegener Crust- Solid Mantle- Liquid Outer Core- Liquid Inner Core- Solid (Too much pressure for it to be liquid. Doesn’t have the space to expand.) Convections cells- Due to the pressure in the earth’s core‚ when it heats up the pressure causes the heat to push against the earth’s mantle‚ triggering it to move‚ caused by convection currents. Convection Currents- it’s a concept of what causes the plate tectonics to move. http://www.scotese
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Geology 122 JAVELOSA‚ Luis Antonio A. 2008-68085 Plate tectonics as expressed in geological landforms and events: An exploration using global data and global visualization tools JAPAN (Convergent): Japan features a very interesting series of geomorphological features. The island lies in the Pacific Ring of Fire that is characterized by having active volcanic and tectonic activity. Due to its geomorphology‚ the area is very vulnerable to environmental hazards such as earthquakes‚ tsunamis‚ and
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designed to impact on a rock particle placed between a fixed and a moving plate (jaw). The faces of the plates are made of hardened steel. Both plates could be flat or the fixed plate flat and the moving plate convex. The surfaces of both plates could be plain or corrugated. The moving plate applies the force of impact on the particles held against the stationary plate. Both plates are bolted on to a heavy block. The moving plate is pivoted at the top end (Blate crusher) or at the bottom end (Dodge-type
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Describe and explain how rock cycle operates. How do rocks metamorphose at destructive plate boundary? Rock cycle is a cycle that describes how rocks are transformed. Igneous rock can change into sedimentary rock or metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock. Besides‚ metamorphism at the destructive plate boundaries creates different characteristics of rocks. Operation of the rock cycle
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landforms have. For instance‚ lava domes may be shaped like hills‚ but the two landforms have very different origins. The major forces that produce landforms are erosion‚ plate tectonics and volcanic activity. Different physical forces can create similar landforms‚ such as the case of rift valleys (created by the separation of tectonic plates) and river valleys (created by erosion). Understanding what created a landform is crucial to explaining many of the smaller features within the landform (such as the
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Hot Spots During the 1960’s when plate tectonics were coming together‚ it explained the many new things and exposed many other magnificent ideas. This new scientific theory explained a number of mysteries like the movements of continents‚ form of the ocean floor‚ mountain chains‚ volcanoes‚ earthquakes‚ and how ancient life was sorted over time. Determining the behavior of the Earth’s crust‚ from plate tectonics‚ it made it easier for Geologist to focus more on the strange things that happen below
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Bhavna Sharma EST 330 TA Notes Week 2 Predictions of Natural Disasters Most disasters are unpredicted 99% of the time With earthquakes‚ history will tell us that one is possible‚ but it can’t say when one will occur‚ or at what time‚ or at what magnitude With tropical cyclones we know of the existence of a storm about 7 or 8 days in advance‚ but there is still great uncertainty about exact location of landfall until 24 hours before. Useful tools: satellites- ability to see where tropical
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800 miles through California. The fault is named after the San Andreas Lake which is a lake that formed in the middle of the Fault. A fault is a break in the earth’s surface where two tectonic plates meet. The San Andreas Fault forms the boundary between the Pacific Plate and the North American Plate. The San Andreas Fault is the most famous fault in the world. It is about ten miles deep. The San Andreas Fault caused the 1906 San Francisco Earthquake. It is a magnitude 7.8 earthquake that
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