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Sources of energy


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introduction to some conventional and alternative energy sources

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Sources of energy

  2. 2. SOLAR ENERGY Nuclear fusion • is a nuclear reaction in which hydrogen nuclei fuse together to form helium nuclei and release energy. • In this state, some 120 million tons of matter- -mostly hydrogen--are converted into helium on the sun every minute, with some of the mass being converted into energy.
  3. 3. NUCLEAR ENERGY • All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms. • a neutron hits a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. • More neutrons are also released when a uranium atom splits. These neutrons go on to hit other uranium atoms, and the process repeats itself over and over again. This is called a nuclear chain reaction NUCLEAR FISSION
  4. 4. WIND ENERGY • In the atmosphere, the pressure isn’t constant. This is primarily because the sun heats the earth’s surface unevenly. • As heat is transferred to the air, we get regions of warm and cool air which can turn into regions of low and high pressure. This difference in pressure makes a force that causes the wind to blow.
  5. 5. ELECTRICITY • Electricity is the flow of electrical power or charge. • Electricity is a secondary energy source, and it is also referred to as an energy carrier. That means that consumers use energy in the form of electricity, which is produced from the conversion of other sources of energy, such as coal, natural gas, nuclear, solar, or wind energy. • electricity itself is not renewable or nonrenewable.