Features Plate tectonics theory‚ which is the modern theory of the motions of Earth’s layer‚ explains how geological features‚ such as mountain ranges‚ continents‚ and bodies of water move and form. An important aspect of plate tectonics theory is that the outer layer of the earth is divided into plates which move across the earth’s surface. “These plates move relative to each other‚ typically at rates of 2-4 inches per year. As the plates move‚ they interact along their boundaries” (Plate Tectonics)
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boundaries by which an oceanic plate slides slowly under a continental plate into the Earth’s mantle‚ as the result of pressure and friction. After a long period of time the overriding continental plate is lifted up creating a mountain range. This is how the Himalayas were formed. Sometimes the extreme heat and pressure exerted on the subducting oceanic plate causes an uplift of magma from the mantle which rises above the surface‚ creating a volcano. When two plates are moving they don’t always slide
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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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Earth’s mantle. Firstly‚ one place where tectonic activity occurs is at oceanic to oceanic constructive plate boundaries. Here two plates diverge or move away from each other‚ pushed apart by huge convection currents In the earth’s mantle. These convection currents are initiated by heat energy produced from radioactive decay in the earth’s core. As the convection currents move the plates away from each other‚ there is a weaker zone in the crust and an increase in heat near the surface. The hotter
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License plate flippers-robbers hate them Number plates being robbed is becoming one of the most common headlines for a local daily. As these can be sold off in the market for a huge sum‚ robbers‚ instead of stealing other car components‚ tend to pry these off. In addition‚ the license plates are easier to remove than any other component. How to save number plates? For saving number plate‚ the easiest bet is to purchase a hideaway license plate. These license plate come for either side of the car’s
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“Evaluate how plate tectonics theory helps our understanding of the distribution of seismic and volcanic events” (40 marks) The theory of plate tectonics was first introduced by Alfred Wegener in 1912. He observed the continents an could see they interlock like a jig saw puzzle‚ for example the West African Coastline fits snugly into the South American coastline‚ he suggested that at one point in time there was only one giant continent called “Pangea”. Later evidence was found that proved this theory
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Plate Tectonic Assignment 1. The Juan de Fuca and Cocos plates were once part of a much larger plate called the _________ plate. 2. How long ago was this plate the dominate plate? 3. What plate(s) are the remnants of this former plate? 4. What kind of plate boundary exists between the Juan de Fuca and the North American plate? 5. What kind of plate boundary exists between the Pacific plate and the North American plate? 6. What tectonic process is ongoing between Baja California and the North
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“EVALUATE HOW PLATE TECTONICS THEORY HELPS OUR UNDERSTANDING OF THE DISTRIBUTON OF SEISMIC AND VOLCANIC EVENTS” In this essay I am going to look in detail at plate tectonic theory and how it can be used to explain seismic and volcanic events worldwide. However‚ I will also look at other potential causes of these events‚ and some evidence that does not follow the theory that all these events are caused by plate boundaries. I am going to look at a range of case studies from differing scales
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Plate Tectonics Plate tectonics is the science and study of causes and relative motions of earth’s lithosphere plates. This theory proposes that earth’s outer layer is made up of plates which have moved throughout earth’s history. It is the scientific theory that attempts to explain the movements of the Earth’s lithosphere that have formed the landscape features seen across the world today. The primary natural hazards facing the islands of the Caribbean are earthquakes and hurricanes. Some of the
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CONSERVATIVE PLATE MARGINS (TRANSFORM FAULTS): When two plates slide past each other they create a conservative plate margin. The relative movement is horizontal‚ and classified as either sinistral (moving to the left) or dextral (moving to the right). Along these margins crust (lithosphere) is not being destroyed by subduction‚ neither is it being created. There is no melting of rock‚ and‚ therefore‚ no volcanic activity or formation of new crust. Despite the absence of volcanic activity‚ these
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