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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Explain how plate tectonics can help our understanding of the distribution of either earthquakes or volcanic eruptions. Plate tectonics can help us understand the distribution of earthquakes and volcanoes very easily‚ it is recorded that main earthquake and volcanic zones are clustered along plate boundaries and more powerful ones are near destructive and conservative plate boundaries. Over time we have learnt that earthquakes that occur on a constructive plate boundary cause little hazard to
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about the Earth and the physical processes‚ which take place within it. My favourite area of geophysics is tectonic movement. Whilst visiting the Himalayan mountain range in 2015 I had first-hand experience of a 7.5 magnitude earthquake in the Gilgit area of Pakistan. This harrowing experience sparked my interest in the formation of the mountain range and the challenges of measuring tectonic movement using a variety of techniques‚ including GPS from satellites to track rock movements and seismometers
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Geology of Northern Alaska Moore‚ T.E.‚ Wallace‚ W.K.‚ Bird‚ K.J.‚ Karl‚ S.M.‚ Mull‚ C.G.‚ and Dillon‚ J.T. (1994). Geology of northern Alaska‚ in Plafker‚ G.‚ and Berg‚ H.C.‚ eds.‚ The Geology of Alaska: Boulder‚ Colorado‚ Geological Society of America‚ The Geology of North America‚ G-1. Moore et al describes the overall geologic environment of northern Alaska. The authors explain that this region of Alaska is particularly unique in that it lies entirely north of the Arctic Circle and it
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UPWARP zone A broad anticline with gently sloping limbs formed as a result of differential uplift. Zone of upwarp Mari-Khandkot high Jacobabad Khairpur high -Thatta- Hyderabad high -Tharparkar high DOWNWARP A segment of the earth’s crust that is broadly bent downward. Zones of downwarp and platform slope -Northern Punjab monocline -Southern Punjab monocline -Cholistan shelf -Panno Aqil graben -Nawabshah slop -Lower Indus trough -Nabisar slope The Jacobabad –Khairpur
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events are major pieces of evidence towards proving that plate tectonics theory is valid (40 marks) The theory of plate tectonics states that the Earth’s lithosphere (top layer of the Earth’s crust) is split up into rigid sections called plates that are moving relative to one another as they move on top of the underlying semi-molten mantle. These plates are either continental‚ The North American Plate‚ or oceanic‚ The Nazca Plate. Tectonic plates are powered by convection currents‚ which is the circular
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Teen Pregnancy Prevention 2010–2015 Integrating Services‚ Programs‚ and Strategies Through Communitywide Initiatives: The President’s Teen Pregnancy Prevention Initiative As part of the President’s Teen Pregnancy Prevention Initiative (TPPI)‚ CDC is partnering with the federal Office of the Assistant Secretary for Health (OASH) to reduce teenage pregnancy and address disparities in teen pregnancy and birth rates. The OASH Office of Adolescent HealthExternal Web Site Icon (OAH) is supporting public
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Executive summary Below report first introduce the history of HTC corp. HTC was found in 1997. After around 13 years’ development‚ HTC has become the key player in the smartphone market. Even HTC was very successful in the past‚ but to have the clear understanding of HTC. The report uses the SWOT method to analyze HTC from different perspectives. Then it identifies some issue for HTC both from inside and outside. Based on the identified the issued‚ I propose some action to improve the situation
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Examination of Bacterial Plates Objective: 1. To examine bacteria pigmentation‚ colony‚ margin characteristics‚ elevation properties‚ broth characteristics and agar stroke properties. 2. To examine bacteria growth characteristics on different culture media. Introduction: Bacterial species can sometimes be identified on the basis of how they appear on or in the different media. The pigmentation‚ size and shape of bacterial colonies as they grow on and in agar plates can provide identifying
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Evaluate how Plate Tectonic Theory helps our Understanding of the Distribution of Seismic and Volcanic Events (40 marks) The Plate Tectonic Theory developed in the late 1960’s‚ when people noticed how continents either side of the Atlantic Ocean seemed to almost fit together. Francis Bacon‚ an English Philosopher was aware of this as early as 1620. Topographical and geological evidence built up and allowed Alfred Wegener to publish a theory in 1912‚ suggesting that the continents were once all joined
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