The dead parts of plants and trees, and the waste materials of animals are called biomass. Biomass is called organic matter which is used as a fuel to produce energy. Biomass includes wood, agricultural wastes (crop residues) and cow-dung. Biomass contains chemical energy in the form of…

The energy from the sea can be obtained mainly in three forms: Tidal energy Wave energy, and Ocean thermal energy We will describe these means of obtained energy from the sea in somewhat detail. Tidal Energy The rise of sea water due to gravitational pull of the moon is called"high…

Solar cells use the energy in sunlight to produce electricity. Thus, solar cell is device which converts solar energy (or sun's energy) directly into electricity. Since solar energy is also called sunlight energy, so we can say that a solar cell converts sunlight energy into electri…

Solar Cooker:-    " The solar Cooker is a device which is used to cook food by utilising the energy radiated by the sun". A solar Cooker consists of an insulated metal box or wooden box which is painted all black from inside. There is a thick glass sheet cover over the box and a…

Moving air is called wind. Wind has a energy. The energy possessed by wind is due it's high speed (or motion). So, the wind kinetic energy. It this kinetic energy of wind which is utilised for doing work. Solar energy (or sun's energy) is responsible for the blowing of wind. Wind …