The natural hazards caused by plate tectonics are more a result of human factors than physical ones. Discuss to what extent do you agree with this statement? [40 marks] A natural hazard is a threat of a naturally occurring event that will have a negative effect on people or the environment. The Earth’s lithosphere (crust) is divided into tectonic plates which are constantly in motion due to the convection currents caused by heat cycles in the mantle‚ driven by radioactive decay in the Earth’s core
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A natural hazard is a threat of a naturally occurring event that will have a negative effect on the environment. Entire Himalayan region is prone to rain-induced hazards in the form of flash flood‚ cloudburst or glacial lake outburst flood. Many Himalayan natural hazards are earthquakes‚ tsunamis‚ hurricanes‚ flooding‚ coastal erosion‚ etc. An earthquake is a process that results from a sudden release of stored energy that radiates shock waves. Coastal erosion is a physical process by which seashores
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rainfall * Gully erosion – occurs where there’s intense rainfall and little vegetation cover. Force of water cuts gullies in slopes :O! * Wind erosion – occurs in dry parts of world * What makes soil erosion worse? * Deforestation and removing vegetation. As a result of this soil gets exposed to wind/rain * Overgrazing by animals. Result is same as above * Over cultivating the soil! Especially monoculture which weakens the soil and structure and removed
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would like to project my speech on three of the most common of those ways. They are deforestation‚ marine debris and air pollution. Deforestation is the removal of a forest or stand of trees where the land is thereafter converted to a non-forest use. According to the United Nations Framework Convention on Climate Change (UNFCCC) secretariat‚ the overwhelming direct cause of deforestation is agriculture. Deforestation has negative effects on everyone and everything. Oxygen production is drastically
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7 Study Figure 7. (a) Suggest why many countries find El Niño weather anomalies very challenging.(10) El Nino is referring to the dramatic change that occurs in the walker circulation cell and in other areas but I am going to focus on this specific area‚ where the usually south-easterly trade winds going from west of South America to Australia and Indonesia across the Pacific Ocean reverse or severely weaken. This occurs usually every 3-7 years and can last between 12-18 months. During an El
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many factors combine in order to trigger such an occurrence or worsen the landslide or mudslide‚ by either reducing the shear strength of the slope‚ or increasing the shear stress. Ultimately‚ the main problem occurs when mass movement presents a hazard to the livelihoods of people. This issue arises because humans develop the area around slopes. It is therefore necessary to consider both the human and physical factors which contribute to impacts from mass movements. Slope failure can be triggered
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million inhabitants‚ has become known as ‘hazard city’. The summary diagram has explained the interrelationships between the hazards which threaten Los Angeles‚ but it is necessary to give some more detail about how they affect the daily life of the residents of LA. All communities - urban or rural - are vulnerable to most hazards. However‚ different regions will be more prone to certain types of hazards than others. Floods and windstorms are the hazards that most frequently lead to disasters in
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(a) The areas at risk from two or more natural hazards are located mainly between the tropic of cancer and the tropic of Capricorn. The Philippines is an area that is at risk from two or more natural hazards and this is located on the pacific ring of fire that is very vulnerable to violent volcanic eruptions and severe earthquakes. (b) A natural hazard can be one of two things; a geophysical hazard and a hydro-meteorological hazard. A geophysical hazard is one caused by the earth’s process such as
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Chang Wong.Tuala 131013 Due Date: Friday 11th October‚ 2013 Tutor: Mr. Rooney Mariner Abstract This paper is a critical notion in stressing the issue of Deforestation and Water supply. It helps our people and especially the youth to have an idea of the causes of Deforestation and the impacts of Water supply to both the environment and human beings. This is one of the issues that deal with the countries and human beings today. These social issues affected various
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of the USA and the Philippines is an island country in Southeast Asia in the western Pacific Ocean. They are both considered hazard hotspots and frequently experience natural disasters. A natural disaster is the realisation of a hazard. California is an MEDC‚ the 6th largest economy in the world with a GDP of US$65000 per capita. However‚ despite the high risk of hazards it is a very desirable place to live because of its relaxed lifestyle and natural beauty. The population is growing mainly due
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