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“Geo” means “earth,” and “thermal” means “heat,” so geothermal energy means “heat from the earth”.
Geothermal energy is produced during the slow decay of radioactive elements in the earth’s core. This process is continuous and it never stops, this is why geothermal energy is a renewable energy source.
The hot steam from a geyser and the hot lava from a volcanoe are examples of geothermal energy because they both come from the underground heat.
We can use geothermal to heat our homes and generate electricity. Have you ever been to a geothermal hot spring? The geothermal bathing and thermal beauty products represent another use of geothermal energy.
Renewable Energy 101:
How does Geothermal Energy work?
The Happy House Story Book (pdf, 5 MB)
The Happy House Coloring Book (pdf, 2 MB)
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Middle School Book (pdf, 4 MB)
International Geothermal Association