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Published byOswald Gordon Modified over 9 years ago
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Energy Resources
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What is energy? Energy makes change possible! The ability to do work. Do we use energy everyday?
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Forms of Energy PotentialChemicalMechanicalNuclearKineticThermal Mechanical (motion) Sound Electrical Energy
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Sources of Energy HydropowerNuclearWindSolar Fossil Fuels
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Resources- Renewable vs. Nonrenewable Nonrenewable- Supplies are limited. 92% of energy consumed in the US comes from nonrenewable sources. Oil (petroleum) Natural gas CoalUranium Renewable- they are naturally replenished everyday! 8% of energy consumed in the US comes from this source BiomassHydropowerSolarWind
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What is your energy IQ? How much do you know about energy? Let’s take the a quiz to see! http://205.254.135.24/kids/energy.cfm?page=qui z http://205.254.135.24/kids/energy.cfm?page=qui z
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Hydropower (hydro electrical) RENEWABLE SOURCE Relies on the water cycle Mechanical energy from moving water First hydroelectric plant opened in 1882 in Wisconsin Most of US hydropower comes from west, such as the Grand Coulee Dam Hoover Dam is another famous Dam
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Quebec, Canada
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Nuclear NONRENEWABLENONRENEWABLE Nuclear energy is energy from atoms Energy is released from the atoms before it becomes electricity Fission- splitting atoms Fusion- atoms are combined, this is the Sun produces energy Uranium is used- common metal found in rocks When it is split, it creates heat, which is used to produce electricity
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Perry Nuclear Plant, OHIO Diablo Canyon, California
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Wind RENEWABLE SOURCE- energy from moving air Wind is caused by uneven heating- hot air rises (convection) Old fashioned windmills are now called wind turbines The fans of the turbine move with the wind, and turn the generator to make electricity In the US, only 2% of energy comes from wind
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Solar RENEWABLE SOURCE- found wherever the sun shines Solar energy converted to thermal energy Heat water, heat spaces, heats fluids Converted in two ways: Solar cells- change sunlight directly to electricity. (EXPENSIVE) Solar thermal/electric power plants- solar energy to heat a fluid and produces steam that powers a generator. 13 plants in the US
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Fossil Fuel Nonrenewable Oil (petroleum products-gasoline, diesel fuel and propane), natural gas, coal Come through ground as liquids, gases, and solids Burn fossil fuels for heat to generate electricity
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Burning Fossil Fuels
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U.S. Energy Consumption (2010) Biomass-4.4% (wood, crops, manure, garbage) Hydropower- 2.6% Geothermal- 0.2% Wind- 0.7% Solar- 0.1% Petroleum- 36.7% Natural Gas-25.1% Coal-21.2% Uranium- 8.6%
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