Energy is the ability of the body or any system to do work. Energy enables us for doing work. Energy can neither be created nor destroyed but it can be transferred from one form to another.
DIFFERENT SOURCES OF ENERGY
In this age of technology, there are various forms of energies that are used for making any appliance work. The resources which are used for harvesting required energy are known as the sources of energy. These sources might not always give the required type of energy but the energy given can be converted into useful energy. There are two types of energy resource-
• Renewable sources of energy which are naturally available and can be replenished. Example, air, water, sun
• Non renewable sources of energy which are limited in their availability. Example, natural gas, coal, nuclear energy
TEN DIFFERENT SOURCES OF ENERGY
1) Solar energy – Solar power is harvested through the collector panels by harvesting the energy of the sun. It is used for powering solar powered- devices like solar cooker etc.
2) Wind energy- the wind is harvested. The wind farms can be used for generating the electricity. The large turbines are used for turning on a generator for producing electricity.
3) Geothermal energy- this is the energy found deep in the Earth. It is sustainable and environment friendly. It is also used for generating the electricity. The steam that is produced when the heated rocks below the Earth’s surface meets the water streams, is collected and used to move the turbines.
4) Hydrogen energy- hydrogen can be separated from water and used as a fuel for generating electricity. It can power up ships, rockets etc. It does not leave any toxic residue behind.
5) Tidal energy- the kinetic energy makes use of the rise and fall motion of the tides for converting the kinetic energy of the incoming and outgoing tides into the electrical energy.
6) Wave energy- wave energy is renewable and can be harnessed for fuel purposes. But this type of energy can damage the marine ecosystem and can disturb the private and commercial vessels.
7) Hydroelectric energy- the power of the water is used for turning the generators for producing electricity. The only problem lies that is needs lot of money for creating and maintaining dams.
8) Biomass energy- it is produced from organic energy. This is used for cooking and heating in the households.
9) Nuclear power- it is renewable source of energy.
10) Fossil fuels (coal, natural gas and oil)- these are a great source of energy. They are also limited.