"Plate armour" Essays and Research Papers

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    -Rigid Outer Layer -Crust and upper mantle -tectonic plates Theory of Plate Tectonics -Theory that Earth’s surface is composed of large‚ thick plates that move and change in size -Combined hypotheses of continental drift and seafloor spreading‚ plus new observations using geophysics superconinents Pangea: super continent -Godwana: (Permian)‚ southern super continent‚ south America‚ Australia‚ new guinea Lavrasia: northern super continent Types of Plate Boundaries Divergent(constructive) Convergent(destructive)

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    pe sba

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    The Earth consists of four concentric layers: inner core‚ outer core‚ mantle . mantle: ]. The crust is made up of tectonic plates [tectonic plates: Large areas of the Earth’s crust that move slowly on the upper part of the mantle‚ often colliding and moving away from each other. ]‚ which are in constant motion. Earthquakes and volcanoes are most likely to occur at plate boundaries. 1.1 The structure of the Earth The Earth is made up of four distinct layers: 1. The inner core is in the centre

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    Aeolian Landforms

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    Natural‚ Physical and Human activities. * They are created by the actions of various forces of nature such as wind‚ water and ice * Landform creating actions are Erosional process‚ Depositional process and Movement of the earth’s tectonic plates  Types of Aeolian landforms : 1. Barchan (also spelled Barkhan) * A barchan (barkhan dune)   is an arc-shaped (crescent-shaped) sand ridge. * produced by the action of wind predominately from one direction. 

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    1964 Alaska earthquake

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    the magnitude of the earthquake? The magnitude of the earthquake was 9.2. 3. This earthquake occurred just as geologists were figuring out plate tectonics. What principle of plate tectonics did the earthquake confirm? It confirmed the major principle of plate tectonics: the Oceanic Pacific Plate dives beneath the North American Continental Plate. 4. How many earthquakes does Alaska have per year? Alaska has on average 24‚000 earthquakes per year. 5. How many magnitude 7 earthquakes

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    Aquiz4sp09

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    Quiz 4 1. The idea proposed by Alfred Wegener to explain the continental shapes and positions is known as _____. A) Pangaea B) plate tectonics C) continental drift D) rift valley E) sea floor spreading 2. In the diagram below‚ which two are the best examples of different continental positions in the past? A) North America – South America B) North America – Africa C) South America – Asia D) Europe – North America E) South America – Africa 3. According to Wegener’s model‚ what evidence

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    Script For Mt St Helens

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    deepest ocean trenches to the highest mountain rangers‚ plate tectonics explain all of the features from the past and present. A plate tectonic is a theory that was developed in the 1960s. According to the concept‚ Earth has a rigid layer called the lithosphere‚ which is normally 100km thick. The lithosphere is broken up into seven large continental and oceanic plates‚ six or seven medium sized regional plates‚ and various small ones. These plates do not move very far very quickly‚ and they usually slide

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    ocean test 2

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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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    surface of the Earth. Continental drift: Movement of the Earth’s continents comparative to each other by appearing to drift across the ocean bed. Tectonic Plate: Large pieces of the Earth’s crust that float on the mantle. These plates are constantly moving and may crash into each other or slide or move apart from each other. Continental Plate: Large sections of the surface of the Earth that move separately. Shield Volcano: Volcanoes formed by viscous lava and have broad and flat sides. This happens

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    ecoli experiment

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    how I carried out my experiment‚ and the benefits and disadvantages to using that method and how could I have changed it to get more accurate results. First off I laid out a table from which I was able to use as a guideline on how to arrange the plates and section them off. Substance Quartile1 percentage Quartile code Quartile 2 percentage Quartile code Quartile 3 percentage Quartile code Quartile 4 percentage Quartile code A: Control (just ecoli) 100% AQ1 100% AQ2 100% AQ3 100% AQ4 B:

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    San Andres Fault Summary

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    the boundary between the North American and Pacific lithospheric plates. Geologists have learned that the Earth’s crust is fractured into a series of "plates" that have been moving very slowly over the Earth’s surface for millions of years. Two of these moving plates meet in western California; the boundary between them is the San Andreas Fault. The Pacific Plate (on the west) moves northwestward relative to the North American Plate (on the east)‚ causing earthquakes along the fault. The San Andreas

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