Geysers are fountains of hot water and superheated steam that may spout up to a height of 150 feet from the earth beneath. The phenomenon are associated with a thermal or volcanic region in which b the water below is being heated beyond boiling point. The jet of water is emitted with an explosion, and is often triggered off by gases seeping out of heated rock.
Almost all the world’s geysers are confined to three major areas: Iceland, The Rotorua district of North Island, New Zealand and yellow stonepark of USA. The world’s best known geyser is perhaps ‘old faithful’ in yellow National park, Wyoming which erupts at regular intervals every 63 minutes at regular intervals.
Hot springs or thermal springs are more common, and may be found in any part of the earth where water sinks deep enough beneath the surface to be heated by the interior forces. The water rises to the surface without any explosion. Such springs contain dissolved which may be of some medical value. Iceland has thousands of hot springs. Some of them have been harnessed to heat houses, swimming pools and for other domestic purposes.
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