Geothermal Energy

A detailed Summary of Geothermal Energy


Geothermal energy represents the inner heat of the earth, produced largely by the decay of radioactive elements in the mantle and center. The three ways that the heat is found is both wet and dry steam (wet steam has drops of water in it), hot water and dry volcanic rocks. We know that the temperature of the earth at depths of 25 to 50 km range from 200`C to 1000`C. There are areas of the earth where local concentrations of heat occur, just as mineral concentrations do. Most of these are located along oceanic ridges and continental rifts, such as the ‘Ring of Fire’.

Geothermal energy is not free from environmental problems. The steam contains large amounts of hydrogen sulphide with its smell of rotten eggs, and both steam and hot water contain substantial amounts of dissolved minerals, many o


f which are poisonous to the aquatic life in the streams and rivers into which they are eventually discharged. Also, the removal of steam or water causes the earth to subside in that region.

Smith, Norman. Energy isn’t easy. Toronto, General Publishing Co. Ltd., 1984.



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Approximate Word count = 561
Approximate Pages = 2 (250 words per page double spaced)

Category: Science

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