Section A - Restless Earth The earth’s structure At the centre of the earth is the core. Surrounding that is a mass of molten rock called the mantle. The thin layer on the outside is called the crust. There are two types of crust‚ continental and oceanic. The crust is made up of seven major plates and many smaller ones. The plates move due to convection currents rising in the mantle. Distribution of earthquakes and volcanoes Mainly found along plate boundaries. In
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The waves spill over. They are constructive. * The process by which the direction of a wave is changed when it moves in to shallower water. * The energy of water impacting on a cracks and joint. Air is compressed into the space‚ leading to erosion. * When particles of sand or rock further abrade the rock surface. * When the waves wear away at the base of a cliff‚ often forming a notch. * The wearing a way of rocks after they have been removed from the cliff face. * The distance
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every year. Haiti lies in the middle of the hurricane belt‚ between June to October. The country has the occasional flooding and earthquakes‚ as well as periodic droughts. Haiti faces current environment issues‚ such as extensive deforestation‚ soil erosion‚ and inadequate supply of portable water. Their drinking water source has improved in the urban‚ and rural areas to a percentage of 69. In the urban and rural areas the drinking water source has unimproved to a percentage of 31 in 2010. Haiti is a
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What are some of the Erosional and Depositional features found at Manchioneal? Table of Contents You should write this last in the order as seen in you syllabus. Aim To investigate and illustrate some of the erosional and depositional features in the
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causes of landslides include: • groundwater (pore water) pressure acting to destabilize the slope • Loss or absence of vertical vegetative structure‚ soil nutrients‚ and soil structure (e.g. fire in forests etc.lasting for 3-4 days) • erosion of the toe of a slope by rivers or ocean waves • weakening of a slope through saturation by snow melt‚ glaciers melting‚ or heavy rains • earthquakes adding loads to barely stable slope • earthquake-caused liquefaction destabilizing slopes
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Charmaine Farrah Estacio Geography 1 Dr. Thomas Orf 11th November 2014 ASSIGNMENT: CHAPTER 15 PRELIMINARIES TO EROSION: WEATHERING AND MASS WASTING KEY TERMS AND CONCEPTS: 1. What is meant by denudation? The total effect of all actions (weathering‚ mass wasting‚ and erosion) that lower the surface of the continents. 2. Distinguish among weathering‚ mass wasting‚ and erosion. Weathering- The physical and chemical disintegration of rock that is exposed to the atmosphere. Mass Wasting- The short-distance
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climate Is a type of climate that is hot and wet throughout the year. Rainfall is heavy and falls during most afternoons. There are no winters or summers(seasons). One day is similar to the next. Biome A very large ecosystem such as rainforests. Erosion Process of transportation Conditions in which the earth’s surface is worn away by the action of water and wind Desert An environment or region that receives very little precipitation (rain). Defined as areas that receive an annual precipitation of
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mucus from the epithelial cells of human’s trachea. In serious conditions‚ death might occur due to suffocation of asthma patients. This will increase the death rate in the country. Another consequence of open burning is that it may lead to soil erosion. Due to weak grip of tree roots‚ soil will eventually wash off during rain. Then the top layer of the soil will erode and wash off from the land into the lower region‚ normally the river. In a long run‚ soil will reduce the depth of river water
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The trees around us are extremely important and have always been necessary for improving the human condition - both during its life and after harvest. It is not a stretch to believe that without trees we humans would not exist on this beautiful planet. In fact‚ some claim can be made that our mother’s and father’s ancestors climbed trees - another debate for another site. So‚ trees are essential to life as we know it and are the ground troops making up an environmental frontline. Our existing forests
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DEFORESTATION Deforestation has been described as the cutting down of trees without planting others in their place. Deforestation‚ clearance or clearing is the removal of a forest or stand of trees where the land is thereafter converted to a non-forest use. Examples of deforestation include conversion of forestland to farms‚ ranches‚ or urban use. It is hard to think that there was a time when 90% of the earth was covered by trees‚ but this was once the case. More than half of the animal and plant
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