expressing the likelihood of a given event. 18. Celestial Objects- All objects in the sky or outer space as observed in astronomy. 19. Gravitational Force The force of attraction between all masses in the universe- (P. 187) 20. Plate Tectonics- The theory that the Earth’s surface is broken into large‚ rigid pieces that move slowly over the
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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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The Alps are the youngest and highest mountain system in Europe. They stretch across the western and southern part of the continent in a broad arc. The mountain range startsnear the Mediterranean Seaon the border between France and Italy. Then it curves north- and eastward through northern Italy‚ Switzerland Liechtenstein‚ southern Germany‚ Austria and Slovenia. The Alps are about 1‚000 km long‚ the broadest section over 260 km wide. The highest peak‚ Mont Blanc‚ situated on the border between
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broaden my knowledge and understanding on this area which will be beneficial moving forward. The area in this course in which I would have liked to have explored more on would have to be plate tectonics and the natural catastrophes caused by them. I did get the basic general understanding of plate tectonics‚ but could have used just a bit more insight on them to familiarize myself a little more. The potential effects of global warming can be devastating. Global warming shows no sign of cooling
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Earth’s crust that creates seismic waves. CAUSE OF EARTHQUAKE Earthquakes are caused by the movement of the earth’s tectonic plates. Earthquakes occur where the earth’s plates meet along plate boundaries (see plate tectonics page for more information on this).For example as two plates move towards each other‚ one can be pushed down under the other one into the mantle. If this plate gets stuck it causes a lot of pressure on surrounding rocks. When this pressure is released it produces shock waves
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A boundary in which crustal plates move past one another is called a: A) transform fault. B) convergent zone. C) divergent zone. D) rift valley. Correct answer(s): A 6. One cubic meter of which of these would weigh the most? A) seawater B) granite rock C) basaltic rock D) mantle Correct answer(s): D 7. The Hawaiian Islands formed as they pass over a hot spot in the middle of the: A) Mid-Atlantic ridge B) Nazca Plate C) Mariana Trench D) Pacific Plate. Correct answer(s): D 8
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earthquakes to plate tectonics and faults in Los Angeles? What are some historical disasters associated with earthquakes? What are the hazards associated with earthquakes? What is the potential for future earthquakes in the Los Angeles area? Earthquakes are started at the Earth’s crust. Our planet is made up of different plates which float on a layer of molten material or magma much like potato chips would float on top of a bowl of water. Scientists believe there could be as many as 12 plates that make
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What is Sea-floor spreading? Seafloor spreading is a process of plate tectonics in which new oceanic crust is created as large lumps of the Earth ’s crust split apart from each other and magma shafts up to fill the gap. Who discovered sea-floor spreading? The man who discovered sea floor spreading was Harry Hess. Harry Hess was a geologist. Part of his mission had been to study the deepest parts of the ocean floor. In 1946 he had discovered that hundreds of flat-topped mountains‚ perhaps sunken
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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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According to Javier Viruete‚ “island arcs develop because of subduction of oceanic lithosphere beneath another oceanic plate…aqueous fluids and/or hydrous melts released from the subducting slab and their reaction with the overlying mantel wedge provide the prime control on arc magma genesis.” Basically this explains the formation of the islands as being caused by tectonic plates colliding against each other and releasing molten rock masses from the
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