The geothermal energy is heat that comes from the Earth. It’s considered to be clean and
sustainable. The resources of geothermal energy are, varying from the “shallow ground to hoy water
and hot rock found a few miles beneath the earth’s surface, and down even deeper to the extremely
high temperatures of molten rock called magma.”
Many places in the world are already thinking that geothermal energy is much less expensive and
affordable that might be able to reduce the dependence on fossil fuels, and the global warming and
public health risks that result from their use. United States has an advantage unlike the other
countries because it has more geothermal capacity than any other country, “with more than 3,000
megawatts in eight states.”
The heat is produced under the earth’s crust where we can find a layer of hot and molten rock, this
layer is called magma. “The amount of heat within 10,000meters of Earth’s surface contains 50,000
times more energy than all the oil and natural gas resources in the world.” We can find the highest
underground temperatures in the regions with active and young volcanoes. The Pacific Rim, often
called the Ring of Fire for its many volcanoes, has many hot spots, including some in Alaska,
California, and Oregon.” Most of these regions are seismically active which in case of an earthquake
they can cause tsunamis.
It has been used for thousands of years for cooking and heating in some countries.
Sources
http://www.renewableenergyworld.com/rea/tech/geothermal-energy
http://environment.nationalgeographic.com/environment/global-warming/geothermal-profile/