Resources and Environmental Sustaniability - resoures

Resources and Environmental Sustaniability - resoures -...

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Introduction Geography 12 I. INTRODUCTION Environmental sustainability refers to the environmental actions or impacts of what we do. In moving towards sustainability, we are attempting to reduce our ecological footprint or to tread more lightly on the Earth. This equates to reducing the amount of resources we use (and buy), the waste we produce and the emissions we produce. With every action impacting on the planets ecosystems, from the local to the global, the world is changing and it is not just the climate.
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RESOURCES – Energy Production Geography 12 Resources and Environmental Sustainability | Page 2 II. RESOURCES Energy Production 1. Fossil Fuels: Fossil fuels are formed out of organic matter deposited and decomposed under the earth’s surface for a very long time. 2. Hydroelectricity: Energy produced as generators are turned by the power of running water. Require a constant supply of water from rivers and lakes, steep slopes to aid the fall of water, and stable geological conditions for the construction of dams. 3. Wind: The extraction of kinetic energy from the wind and conversion of it into a useful type of energy: thermal, mechanical, or electrical. 4. Nuclear: Nuclear power is the utilization of the fission reactions in a nuclear power reactor to produce various types of energy, such as steam for electric power production, for ship propulsion, or for process heat.
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RESOURCES – Energy Production Geography 12 Resources and Environmental Sustainability | Page 3 5. Solar: Solar energy means using the energy of sunlight to provide electricity, to heat water, and to heat or cool homes, businesses or industry. 6. Geothermal: Thermal energy contained in the earth; can be used directly to supply heat or can be converted to mechanical or electrical energy. Fossil Fuels Benefits (Pro’s) Drawbacks (Con’s) Easily combustible, and produces high energy upon combustion helping in locomotion and in the generation of electricity and various other forms of energy. Widely and easily distributed all over the world. Comparatively inexpensive due to large reserves and easy accessibility. Very large amounts of electricity can be generated in one place using coal and Gas-fired power stations are very efficient. Non-renewable resource and is fast depleting. Releases carbon dioxide, a greenhouse gas and a major cause of global warming. Leave behind harmful byproducts upon combustion causing a lot of pollution. Mining of fossil fuels leads to irreversible damage to the environment.
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RESOURCES – Energy Production Geography 12 Resources and Environmental Sustainability | Page 4 Hydroelectricity Benefits (Pro’s) Drawbacks (Con’s) Dams can store rain water or water directly from the river itself. In case of a drought the dam will still have a relatively constant supply of water.
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This note was uploaded on 01/23/2012 for the course GEOGRAPHY 12 taught by Professor Staff during the Fall '08 term at Concordia AB.

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Resources and Environmental Sustaniability - resoures -...

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