Question

how can you classify the energy resources? give at last for eg of each

Answer 1

All the sources of energy, currently available for harnessing, can be linked to two fundamental forces in nature- gravitational and nuclear. Nuclear fusion is the source of solar energy - the driving force for much of the energy consumed on earth today. Renewability or non-renewability of a solar driven process is distinguished based on the energy storage or cycling time involved. Renewable resources have a cycling time less than 100 years, while for non-renewable resources, it is greater than a million years. The depletable resources are fossil fuels, which are non - renewable since the rate of their utilisation far exceeds the rate at which they are formed. Examples of renewable resources are hydro energy, solar energy, wind, biomass, and energy from wastes (such as biogas, agrowastes, etc.). The renewable solar energy is subdivided into direct and indirect types.Sunlight used directly can produce electricity, heat or derive a chemical reaction. It is used indirectly when it drives other processes, biological - chemical or climatic - mechanical, which in turn are used as sources of energy
. All energy resources, particularly the commercial ones, are natural. Coal, oil and nuclear sources constitute commercial sources, while firewood, biomass and animal dung constitute non- commercial sources. Also, the energy sources are classified based on animate and inanimate characteristics.
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