Sources of Energy
A source of energy is the one which can provide adequate amount of energy in a convenient form over a long period of time.
- Renewable sources of energy
Sources of energy which are being produced continuously in nature and are inexhaustible are called renewable sources of energy. The renewable sources of energy are: solar energy, wind energy, hydro energy, bio fuels (wood, biogas), hydrogen, energy from oceans and geothermal energy.
- Non-renewable sources of energy
Sources of energy which have been accumulated in nature over a very, very long period of time and cannot be quickly replaced when exhausted
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