Energy is an essential force powering society, industry and in the end our everyday lives. Generally, energy sources can be classified as non-renewable and renewable sources. Non-renewable energy sources are those that can not be replenished or made again in a short period of time. Renewable energy sources on the other hand can be replenished in a short period of time (Energy sources, 2011).
There are three main sources of energy — Nuclear Energy, Fossil Energy and Alternative Energy. Nuclear power is a form of energy which comes about from a reaction between atomic nuclei. The majority of this form of energy comes out of nuclear fission. This is the process by which atomic nuclei which are made up of neutrons and protons, collide with each other and fall apart. The energy which kept these parts together is no longer needed and comes free. This energy is then used to heat up water which turns into steam which is then used to create electricity. One advantage of nuclear power is that very little raw material is needed to make a lot of electric energy. A very big disadvantage is that the raw material for nuclear power, uranium, is very radio-active and the rods and other used materials remain radio-active for a very long time (Energy sources, n.d.).
Fossil energy is made by the burning of fossil remains which are the remains of dead plants and animals. These plants and animals died over a million years ago and under the pressure of the earth’s surface and by way of decay, have been compressed. When fossil fuels are burned the process generates steam which is used to power a turbine that with the help of a generator, produces electricity. Fossil fuels include such things as oil, natural gas and coal. One advantage of fossil energy is that it is inexpensive to produce the energy from these raw materials. One disadvantage is that during the process of combustion a lot of toxic materials are emitted into the air which leads to pollution of the atmosphere. Another disadvantage of fossil energy is that the supply of fossil fuels is not infinite, the current supply is thought to be about fifty years in duration (Energy sources, n.d.).
Alternative energy is a form of energy without waste-matters. It is also a form where the source, which delivers the energy, is endless. Some alternative energy sources are sun, water and wind energy. All of these forms of alternative energy can be used to make electric energy. The advantage of alternative energy is that the energy source is endless and doesn’t give off any pollution. The main disadvantage to this form is that the techniques used to transform it into electricity is very expensive (Alternative Energy Sources, n.d.).
The use and cost of energy affects everyone on a daily basis. There are a lot of issues that arise from the use of energy like greenhouse gas emissions, acid rain, climate change, and dependency on depleting supplies of fossil fuels, especially from politically unstable regions of the world. Today, about eighty percent of the world’s electrical production comes from fossil and nuclear fuels, and almost all transportation is fueled by gasoline. The World Energy Council predicts that primary energy demand will triple by the year 2050, as the world population grows to almost nine billion and developing nations raise their living standards (Global Energy Network Institute, 2011).
Energy innovation is one way in which many of these energy issues can be solved. By investing in energy innovation countries can fuel their economy and help to alleviate international energy issues all at the same time. Small scale renewable projects provide the best occasion for solving energy issues while not adding to greenhouse gas emissions. By driving down the cost of solar cells, wind turbines, and energy storage, electrifying rural areas could not only become a cost effective plan for governments, but profitable effort for private investors as well (Solving the Energy Poverty Problem, 2011).
References
Alternative Energy Sources. (n.d.). Retreived from http://home.utah.edu/~ptt25660/tran.html
Energy sources. (n.d.). Retrieved from http://library.thinkquest.org/C0110881/energy_en.html
Energy sources. (2011). Retreived from http://www.neok12.com/Energy-Sources.htm
Global Energy Network Institute. (2011). Retrieved from http://www.geni.org/globalenergy/faq/general/faq_I-am-concerned-about-global-energy-problems.shtml
Solving the Energy Poverty Problem. (2011). Retreived from http://thebreakthrough.org/blog/2011/02/solving_the_energy_poverty_pro.shtml
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