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Steam engines

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  • How is geothermal energy used to power buildings?

  • A much more conventional way to tap geothermal energy is by using geothermal heat pumps to provide heat and cooling to buildings. Also called ground-source heat pumps, they take advantage of the constant year-round temperature of about 50F that is just a few feet below the ground鈥檚 surface.

  • How do geothermal heat pumps work?

  • In thousands of homes and buildings across the United States, geothermal heat pumps also use the steady temperatures just underground to heat and cool buildings, cleanly and inexpensively. Below Earth’s crust, there is a layer of hot and molten rock, called magma.

  • How is geothermal energy extracted from the Earth?

  • Geothermal energy can be extracted in power plants as well as directly on a smaller scale. Based on what is extracted and the diverse extraction techniques, there are three types of geothermal power plants. This geothermal plant uses the heat from the steam present underground.

  • 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.

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