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Alternative Energy Resources Essay

1150 words - 5 pages

The energy that is used today comes from fossil fuels, which is a nonrenewable limited resource that will eventually be used up. Alternative energy sources such as solar, hydroelectric, geothermal and wind energies can be used, to conserve the planets limited natural resources. Alternative energy is the use of another energy without the burning of fossil fuels and break up on atoms. Solar energy can be used to operate cars and provide electricity for homes and businesses. Hydroelectric energy can be used to provide electric power to small towns and cities. Geothermal energy can be used to heat buildings or water and to power turbines to make power. Wind energy can be used to pump water and generate electricity.
Solar energy is of the most resourceful sources of alternative energy. It is the most important of the non-conventional sources of energy, because it does not pollute the earth. “One of the reasons for this is that the total energy we receive each year from the sun is around 35,000 times the total energy used by man.” (Alternative energy sources) Solar energy can be converted directly or indirectly into alternative forms of energy. People use solar energy for many things, but most of it is used for heating, cooling, transportation and the generation of electricity. When the sun's rays are
transformed into electricity, it is called photovoltaic energy. This is a simple way to get electricity. Photovoltaic panels can be put on the roof of a house to provide electricity or can be used in remote places where there is not electricity from other sources. Solar energy also powers cars without the use of gasoline which is made from the fossil fuel oil.
Solar-powered vehicles (SPV’s), such as cars, boats, bicycles, and even airplanes, use solar energy to either power an electric motor directly, and/or use solar energy to charge a battery, which powers the motor. They use an array of solar photovoltaic (PV) cells (or modules made of cells) that convert sunlight into electricity. The electricity either goes directly to an electric motor powering the vehicle, or to a special storage battery. The PV array can be built (integrated) onto the vehicle body itself, or fixed on a building or a vehicle shelter to charge an electric vehicle (EV) battery when it is parked. (Green nature)
Next, “Hydroelectric power is the largest source of renewable electricity in the world and in the United States.”( Union of Concerned Scientists)This energy comes from water that is moving with ample speed and volume to turn a generator. The most common type of hydroelectric power comes from using a dam on a river or lake. Water is discharged from the reservoir, which spins the turbine, which activates a generator to get electricity. Hydroelectric power does not require a large dam. Some hydroelectric power plants just use a small canal to channel the river water through a turbine. (Union of Concerned Scientists)
Third, geothermal energy is heat...

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