Plate Tectonics Ever since the beginning on time‚ Humans believed the ground is solid and immobile. But this is not true whatsoever. The Earth is every-changing and continually in motion. The stability of the Earth is not at all what we think it is. Thinking about the rotational axis of the Earth‚ and possibly of what the Earth may become at a certain point in time‚ has a great influence on understanding all aspects of living things‚ either in the past‚ present‚ or future. The study of Plate
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GEOLOGY 101 Exam 1 Study Guide Geology | * The science that examines Earth‚ its form and composition‚ and the changes that it has undergone and is undergoing * The processes are slow‚ but none the less dynamic * Physical geology: examines Earth materials and seeks to understand the many processes that operate on our planet * Historical geology: seeks an understanding of the origin of Earth and its development through time | Scientific Method | * It is a rigorous process whereby new
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SEDIMENTARY BASINS - AN INTRODUCTION Definition of a sedimentary basin: A sedimentary basin is an area in which sediments have accumulated during a particular time period at a significantly greater rate and to a significantly greater thickness than surrounding areas. (Compare with physiographic basin - a depression in the surface of the land or sea-floor that may or may not be infilled with sediments). Sedimentary basins of one type or another today cover about 70% of the Earth’s surface and contain
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Midterm Review 1. You should be familiar with the formation of the Earth and Solar System. What evidence is used to support the contention that the solar system formed from a rotating nebular dust cloud? 2. How does the earth become compositionally zone? You should have knowledge of the 6 evolutionary stages that show how the earth could evolve from a "homogeneous mixture of primordial dust (planetesimals) to the compositionally zoned planet containing an Fe-Ni core‚ Fe-Mg silicate mantle and Fe-Mg-Al
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followed by a chain of waves. The main cause of tsunamis are submarine earthquakes. These are most common at subduction zones. Friction between subducting plates causes a build-up of pressure‚ eventually this pressure is released causing an earthquake. These submarine earthquakes can displace huge volumes of water. On the 26th December 2004 at the Indian plate/ Burma plate subduction zone‚ lots of pressure was suddenly released north-west of the coast of Sumatra‚ resulting in a megathrust earthquake
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Maciej Frolow/ Photographer’s Choice RF/ Getty Images The Earth’s crust is an extremely thin layer of rock‚ like the skin of an apple in relative terms. It amounts to less than half of 1 percent of the planet. But the crust is exceptionally important‚ and not just because we live on it. The crust can be thicker than 80 kilometers in some spots‚ less than one kilometer in others. Underneath it is the mantle‚ a layer of rock some 2700 kilometers thick that accounts for the bulk of the Earth. The
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Report Cassandra S. Parker Western Governors University ETHICAL DECISION-MAKING REPORT 2 Ethical Decision-making Report B.1. Ethical decision-making strategies In order to ensure that ethical decision-making takes place at all levels within Cascadia Toyco‚ I am suggesting that the company implement the following two strategies: (1) establish a business code of ethics‚ and (2) adopt both formal and informal decision-making processes. Establishing a business code of ethics will provide an internal
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“Discuss the Extent to which volcanic and seismic activity are evidence for plate tectonic theory” (40) Plate tectonics is the theory that 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 plates converge‚ diverge and move past each other. Alfred Wegener pioneered the theory of continental drift in the early 1900s which he supported
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How volcanoes and Earthquakes are formed- Part 1- an introduction to the moving earth PART 1: 1. Review from your 7th grade lessons the layers of the earth‚ from the following website. http://volcano.oregonstate.edu/vwdocs/vwlessons/lessons/Earths_layers/Earths_layers2.html Label the picture below showing which layer is which. Then answer the following questions. QUESTIONS 1. Which layer is the densest? 2. Which layer has the ability to flow? PART 2: 2. Here you will answer the question:
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depicting the locations which are prone to both. Volcanism is associated with two of the plate boundary types: divergent and convergent margins‚ so activity is usually found along oceanic ridges where plates are moving apart‚ near rift valleys‚ on subduction zones where the most violent activity takes place and over hot spots which have given rise to the Hawaiian islands. Magma is generated at most plate boundaries‚ and this magma rises to the surface to form volcanoes. The mobility of crust also causes
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