Sources of energy
Sun is an inexhaustible and pollution-free source of energy, called solar energy. It is estimated that solar radiations directly falling on the earth are to 170 trillion kilowatts and only eight days of sunshine are equal to all the available energy in the world put together. It can be used for direct heating or suns heat is converted into electricity called thermal or photovoltaic conversion’s number of solar equipments are at present some of them are solar heaters, solar cookers, solar pumps,etc.
Wind energy
Wind energy is being used for centuries to run the wind mills for grinding grains and pump water in certain areas especially in the coastal areas.
Tidal energy
Tidal waves of the sea can be used to turn combines and generate electricity called tidal energy. The tidal energy can be harnessed by consuming a tidal barrage.
Hydropower
Hydropower is the electrical energy produced from the kinetic energy of water falling from a height, so it is called hydro electrical energy, Dams are very helpful in producing such energy.
Geo-thermal energy
The energy used from hot rocks present inside the earth is called Geo-thermal energy
Biomass energy
Biomass is the solid organic matter like wood, dung, agriculture, sewage, waste, energy plants, and petrol-plants like eucalyptus.
The biomass can be decomposed by bacterial fermentation to obtain certain fuel sources which may be liquid or gases.
