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Published byDwain Davidson Modified over 9 years ago
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Fossil Fuels & Electricity
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Electricity as a resource Electricity is created by the flow of electrons. (Most) Power plants use electric generators powered by fossil fuels.
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What are fossil fuels & which kinds are used to get electricity? …are the remains of things that died millions of years ago. EX: Coal, oil, and natural gas
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What are the drawbacks to using fossil fuels for electricity? 1) Supply is limited – fossil fuels are a NONRENEWABLE resource.
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2) Pollution – combustion of FF causing greenhouse gases (& global warming).
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Renewable & Nonrenewable Resources Renewable – can be replaced ex: trees, wind, sunlight Nonrenewable – can not be replaced ex: fossil fuels
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Nuclear Energy
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What is nuclear energy? …energy within the nucleus of an atom.
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How does nuclear energy work? … by splitting an atom (nuclear fission) energy is released. Nuclear power plants have to control nuclear fission!!
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Nuclear Power Plant
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Advantages of nuclear energy… 1)Produce lots of energy. (Usually uranium) 2) No polluting gases are produced. 3) Less maintenance
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Disadvantages to using nuclear energy… 1)Produces radioactive wastes. 2)Small supply. 3)Expensive (due to safety precautions). 4)Safety concerns
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Is nuclear power safe? There have been accidents. Chernobyl (1986) 3-mile Island (1979) Meltdowns & chain reactions can cause severe destruction
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Chernobyl
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What is nuclear fusion? …2 nuclei are combined and release energy. May be a future source of safe energy.
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