FULL SET OF NOTES ON TECHTONICS 2012 AQA GEOGRAPHY FULL SET OF NOTES ON TECHTONICS 2012 AQA GEOGRAPHY TECHTONICS | TOPICS | UNDERSTOOD/COVERED? | PLATE MOVEMENT | | SEISMICITY | | VULCANICITY | | These notes were copied from an AQA textbook. They contain EVERYTHING you need to know for the exam for the tectonics section. You WILL however‚ need to use your own case studies as these are not included. You will need 2 case studies for volcanoes‚ and 2 case studies for earthquakes
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“Volcanic and seismic events are major pieces of evidence towards proving that plate tectonics theory is valid’ Discuss the extent to which you agree with this statement (40 marks) The plate tectonics theory was made by a German named Alfred Wegener. He stated that a single continent existed about 300 million years ago named Pangaea and that it split into two continents of Laurasia in the north and Gondwanaland in the south. Today’s continents were formed by further splitting of the two masses
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pieces of evidence towards proving that the plate tectonic theory is valid” Discuss the extent to which you agree with this statement (40). The theory of plate tectonics explains the structure and motion of the Earth’s lithosphere. The theory states that the Earth’s crust is split into large sections called tectonic plates‚ and these move relative to one another creating boundaries at which the plates converge‚ diverge or move past each other. These plates are either continental or oceanic and are
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Evaluate the strategies used to reduce the impact of tectonic hazards. Tectonic hazards are comprised of earthquakes and volcanoes; they are named ‘tectonic hazards’ as it is ultimately the movement of tectonic plates that cause these events. These hazards have the potential to kill thousands and devastate the region it strikes. Although the main hazard causes destruction‚ events that follow can be equally‚ if not more‚ devastating‚ for example an earthquake can often trigger a tsunami. Many strategies
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A Divergent plate boundary is a tectonic boundary where two plates are moving away from each other and new crust is forming from magma that rises to the Earth’s surface between the two plates. The middle of the Red Sea and the mid-ocean ridge (running the length of the Atlantic Ocean) are divergent plate boundaries. Divergent boundaries are characterized by a rift in the surface of the earth along the midocean ridges that exist in all of the major ocean basins. The ridges are composed of volcanic
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The natural hazards caused by plate tectonics are more a result of human factors than physical ones. Discuss to what extent do you agree with this statement? [40 marks] A natural hazard is a threat of a naturally occurring event that will have a negative effect on people or the environment. The Earth’s lithosphere (crust) is divided into tectonic plates which are constantly in motion due to the convection currents caused by heat cycles in the mantle‚ driven by radioactive decay in the Earth’s core
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Constructive Plate Margin * This is where two plates move apart be it any combination of crust type either sial or sima. At a sima and sima divergence such as the Eurasian Plate and the North American Plate‚ both crusts diverge leaving magma to rise up. This with aid from the cool ocean water solidifies and creates gentle sloping volcanos with basic basaltic lava with low viscosity. The type of volcanoes found at these margins are shield and fissure volcanoes. At this specific plate margin‚ at
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Tectonics Division of Pakistan Defination: Tectonics zones of Pakistan are the Eurasian Plate‚ Arabian Plate and Indian Plate which is part of Indo-Australian Plate. Eurasian Plate: The Eurasian Plate is a tectonic plate which includes most of the continent of Eurasia (a landmass consisting of the traditional continents of Europe and Asia)‚ with the notable exceptions of the Indian subcontinent‚ the Arabian subcontinent‚ and the area east of the Chersky Range in East Siberia. It also
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Scientific Concepts and the Natural World RINT Task 1 Western Governors University Free Powerpoint Templates Page 1 The Earth’s Plate Tectonics James Hutton was the first scientist to address the Earth was millions of years old‚ as well as alive and is continuously being formed. Charles Lyell popularized uniformitarianism‚ and believed the Earth was being shaped by slow moving forces. Alfred Wegener introduced the foundation for the theory of continental drift. Wegener was one of the
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Chapter One The theory of plate tectonics explains how forces within the planet create landforms. This theory views Earth’s crust as divided into more than a dozen‚ rigid‚ slow-moving plates. Some plates are as large as a quarter of the planet‚ but others are only a few hundred miles across. The plates slowly move across the upper mantle‚ usually less than an inch per year. Scientists use the theory of plate tectonics to explain the long history of Earth’s surface. They believe that about a few
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