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Alternative sources of energy Eliška Dlouhá V8A
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Alternative sources of energy reduce our dependance on fossil fuels renewable environmental friendly no pollution
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Solar energy ineffective - only 30% passive - duration, position, sun’s rays intensity active - electrical technology - solar panels no pollution, no care ineffective in colder regions
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Wind energy windmill family energy needs, industrial uses (wind farms) no air pollution low cost windy areas noisy kill birds
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Hydroelectric energy largest producer dams, water mills constant, predictable, controllable no greenhouse gases huge costs to build prevent the migration of fish tidal power
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Geothermal energy from beneath the earth magma → heat → boil water → steam → turns the turbines no pollution, effective suitable for particular region harmful gases huge installation cost
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Summary solar energy wind energy hydroelectric energy geothermal energy biomass energy hydrogen every source suitable for different area
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Sources http://www.conserve-energy-future.com/AlternativeEnergySources.php, 23. 2. 2015 http://www.conserve-energy-future.com/AlternativeEnergySources.php http://www.altenergy.org/, 23. 2. 2015 http://www.altenergy.org/ http://en.wikipedia.org/wiki/Renewable_energy, 23. 2. 2015 http://en.wikipedia.org/wiki/Renewable_energy http://saveenergy.about.com/od/alternativeenergysources/a/altenergysource.htm, 23. 2. 2015 http://saveenergy.about.com/od/alternativeenergysources/a/altenergysource.htm
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