Energy

Páginas: 2 (379 palabras) Publicado: 9 de octubre de 2012
ENERGY
Energy is the amount of force or power when applied can move one object from one position to anotheror Energy defines the capacity of a system to do work. Energy exists in everybody whetherthey are human beings or animals or non living things for eg: Jet, Light, Machines etc..
Energy can have many forms: kinetic, potential, light, sound, gravitational, elastic, electromagnetic ornuclear.According to the law of conservation of energy, any form of energy can be converted into another form and the total energy will remain the same.For eg: a laborer when pushes the pile of bags, hispotential energy stored inside him is converted into the kinetic energy from the movement of matteror when you burn the wood it's chemical energy is converted into the heat energy or when you chargeyour mobile phone the electrical energy is converted into the chemical energy which gets stored inside the battery's molecules.
Renewable Energy
Renewable energy is energy which is generated fromnatural sources i.e. sun, wind, rain, tides and can be generated again and again as and when required.They are available in plenty and by far most the cleanest sources of energy available on this planet.For eg: Energy that we receive from the sun can be used to generate electricity. Similarly, energy from wind, geothermal, biomass from plants, tides can be used this form of energy to another form.Non-Renewable Energy
Non-Renewable energy is energy which is taken from the sources that are available on the earth in limited quantity and will vanish fifty-sixty years from now. Non-renewable sourcesare not environmental friendly and can have serious affect on our health.They are called non-renewable because they cannot be re-generated within a short span of time. Non-renewable sources exist inthe form of fossil fuels, natural gas, oil and coal.
Energy from fossil fuels
It is the energy associated with the use of coal, oil and natural gas.
The form of energy is fossil fuels have...
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