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power gathering

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by

Brogan Gunn

on 12 April 2011

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Transcript of power gathering

coal Coal is a combustible black rock composed of carbon and hydrocarbons. It is the most abundant fossil fuel produced in the U.S.
hydro Coal is a nonrenewable energy source because it takes a long time to create. The energy in coal comes from the energy stored by plants that lived hundreds of millions of years ago pros/cons
non renewable energy in abundance Hydropower plants capture the energy of falling water to generate electricity. A turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy. nuclear Unlike burning fossil fuels, using nuclear energy to make electricity produces This helps keep the skies clean and doesn't contribute to global warming. the electricity industry would add 2.6 billion tons of carbon dioxide to the atmosphere each year if it used coal power instead of nuclear. there are about 440 nuclear power polants in 31 countries around the worls unfortunatley the chernoble meltdown has scared the world away from nuclear enery solar Solar photovltaic pannels convert solar radiation into electricity the pannels are packaged into modules, like the one shown at the right; groups of modules are called arrays. Photovltaic stuff act like a battery when the sun is shining, producing a stream of controls current electricity and making it go into the building the bad part is that only ten percent of the energy is harvested wind power! Wind is a type of solar energy. Wind is harnessed by puttin up giant windmills like skinnier taller ones that the dutch ued to use to grind grain but theses ones are a little bit more complicated. they do still use gears but they have power lines that lead away from them like the one you saw before last but not least: geothermal with geothermal you have a system kind of like a flourescant light bulbs but except using gas your using water with either steel, brass/copper, and aluminum pipes to deliver the water below the surface and run it by molten rock and when the water turns to steam it rises back u to the colectin area that uses the steam to turn a mechanism but if you wanted to just have hot water then you make the pipes so they dont go down to the point of the water truning all the way to steam and just to hot water the bad part is that it is only really use full in the "ring of fire" where there are still very active volcanoes pros/cons super efficient doesnt provide alot of energy pros/cons efficient waste takes along time to detierierate pros/cons with enough solar panels the power company will pay YOU! only 5% of the potential power is harvested
pros/cons again... super efficient the wind doesnt always blow disrupts migration routes of bats and some birds pros/cons useful for big buisnesses you have to be in the "ring of fire" for the best effects
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