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Derived from the Sun

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  • Is it true that geothermal energy comes from inside the Earth?

  • It is not a correct statement: Geothermal energy comes from the heat within the earth. The word geothermal comes from the Greek words geo, meaning earth, and therme, meaning heat. People around the world use geothermal energy to produce electricity, to heat buildings and greenhouses, and for other purposes.

  • What is the meaning of geothermal?

  • Vocabulary. Geothermal energy is heat that is generated within the Earth. ( Geo means 鈥渆arth,鈥?and thermal means 鈥渉eat鈥?in Greek.) It is a renewable resource that can be harvested for human use. About 2,900 kilometers (1,800 miles) below the Earth鈥檚 crust, or surface, is the hottest part of our planet: the core.

  • How do geothermal power plants generate electricity?

  • In order to obtain enough energy to generate electricity, geothermal power plants rely on heat that exists a few kilometers below the surface of the Earth. In some areas, the heat can naturally exist underground as pockets steam or hot water.

  • Is geothermal energy renewable or nonrenewable?

  • Geothermal energy is a renewable resource. The Earth has been emitting heat for about 4.5 billion years, and will continue to emit heat for billions of years into the future because of the ongoing radioactive decay in the Earth鈥檚 core.

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