Posted by
Sarah Green on Dec 21st, 2011 in
Coal |
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Electricity is mostly generated at an amount that meets what is demanded, as it is tricky to store surplus energy. Nevertheless it’s feasible to store smaller quantities of energy for personal and domestic uses. Batteries and fuel cells both produce electricity by employing electrochemical reactions. Flywheels store energy as they spin.
The battery
A convenient store of energy is the electrical cell or...
Posted by
Sarah Green on Dec 20th, 2011 in
Coal |
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The electricity generation process involves several energy changes, irrespective of the 1st energy source that’s utilised. Traditionally, electricity has been generated using fossil fuels, especially coal. More recently, power stations have started to use gas and oil as their source of energy. Oil-fired power stations are common in oil manufacturing nations, such as Indonesia. Gas burns more cleanly and...
Posted by
Sarah Green on Dec 17th, 2011 in
Coal |
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Smog
The particles and gases from auto exhaust pipes can create photochemical smog. This form of smog is very often found in hot, dry and bright cities like Athens in Greece, Cairo in Egypt and Mexico City. The automobile exhaust pipes pump out gases like nitrous oxide, carbon monoxide and ozone that react together in the sunlight. The result is a smoggy haze over the city.
Los Angeles in California, USA, has...
Posted by
Gordon Zwillenberg on Jun 29th, 2011 in
Coal |
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Most of our energy sources fall from five major sources. They include:
1. Coal – is the biggest energy source of fuel for creating electricity. Coal is a fossil fuel. Toxic fumes are expelled into the atmosphere, when electricity is generated. Coal has a restricted supply, as Coal Mines are shutting down in the United States. Therefore, we need to end our dependency on coal.
2. Oil – is turned to gas to...