3. This picture shows river meander. Name and describe the process that is occurring at Point A and the process that is occurring at Point B. Point A: Erosion- the water breaks off fragments of soil and rock from outer curve of the riverbank. Point B: Deposition – fragments of soil and rock being carried by the water are dropped along the inner curve of the riverbank. 4. How can building up natural levees with stone and concrete often make flooding
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AS geography revision Start early…. There is a lot to learn. Use this as your starting point. There is more help available on the geography revision pages of Moodle and also on AQA’s website‚ where you will find past papers‚ mark schemes and also examples of student answers (exemplars). You can buy a CGP revision guide if you would like to (£5 from college) but also on Amazon and from WHSmith. The bits that the CGP revision guide doesn’t have in it for AS Geography…. RIVERS Graded long profile
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The types of metamorphic rocks are Greywacke‚ Slate‚ Schist‚ Marble and Sandstone. The transition to sedimentary the earth’s surface is always eroding this means rocks are being broken into smaller pieces by weathering of wind‚ water and ice. By erosion and weathering sediments are
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world’s land surface. SOIL FORMATION Soil formation is a very long process. It begins with the weathering of rocks into small fragments. The rocks are also worn away by the agents of erosion like river‚ wind‚ sea and glacier. The sediments and tiny rock particles are then deposited by the agents of erosion. The accumulation of such sediments over the ages forms soil. Eventually‚ the plants that grow on the soil‚ shed their leaves which decay to form the topmost layer of soil called ’humus’.
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Coastal areas can be protected from the effects of natural processes‚ for example the effects of erosion‚ deposition‚ transportation‚ weathering and mass movement. The most problematic of these is erosion. There are three types of erosion: hydraulic action‚ abrasion and attrition which all contribute together to erode cliffs‚ causing the coastline to be vulnerable and weaker. The cause of erosion can then lead to mass movement for example rock fall and slumping which can affect the coastline greatly
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change in the landscape (TED depending on available energy) “Rivers change the landscape through which they flow. They alter it by erosion‚ transportation and depostition” (http://www.bbc.co.uk/schools/riversandcoasts/rivers/change_river/pg_06.shtml 18.06.2013) River erosion is the wearing away of the land as the water flows past the bed and banks. River deposition happens whenever the velocity of the river drops; meaning that there isn’t enough energy to erode or transport material. Transportation
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and solidification of lava take place on the earth surface‚ extrusive igneous or volcanic rocks are formed. Any rocks exposed on the land surface are subject to exogenetic processes. They include commonly denudation (weathering‚ erosion‚ transportation) and deposition. With the help of denudation agents‚ rocks are broken down and brought downslope.
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primary issues of concern arising from the human interaction with the lithosphere. It encompasses soil degradation and the deterioration of natural landscapes and vegetation. It includes the adverse effects of overgrazing‚ excessive tillage‚ erosion‚ sediment deposition‚ extractive industries‚ urbanization‚ disposal of industrial wastes‚ decline of plant communities‚ and the effects of noxious plants and animals. Whenever the natural balance is altered by developments for agricultures‚ mining‚ forestry
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Components of the Lithosphere -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
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April 6‚ 2013 SCI/275 Atmospheric Issues The atmospheric issue that I chose to discuss was air pollution and the major effects that it has on our environment. The earth is constantly being polluted by all types of gases that are continuously being released into the atmosphere. Not all gases are harmful; actually there are numerous amounts of gases that are released that are needed for humans to survive on this planet. There are a few factors that contribute to pollution more than others which
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