Geothermal Literally means ‘Earth's heat’.The word geothermal comes from the Greek words "geo," meaning earth and "therme," meaning heat. Geothermal heat is generated from within the earth's core, some 4,000 miles below the surface.
The heat is produced mainly by the slow decay of radioactive materials such as uranium and potassium found in the various materials that make up the earth's interior. The amount of heat within 10,000 meters (about 33,000 feet) of Earth's surface contains 50,000 times more energy than all the oil and natural gas resources in the world.
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http://www.wonderwhizkids.com/index.php/geothermal-power
The heat is produced mainly by the slow decay of radioactive materials such as uranium and potassium found in the various materials that make up the earth's interior. The amount of heat within 10,000 meters (about 33,000 feet) of Earth's surface contains 50,000 times more energy than all the oil and natural gas resources in the world.
read more.....
http://www.wonderwhizkids.com/index.php/geothermal-power
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