+Earth's heat is the immense internal thermal energy that powers its dynamic geology. Primarily from planetary formation and ongoing [radioactive decay](/wiki/radioactive_decay), this deep warmth drives phenomena like [plate tectonics](/wiki/plate_tectonics) and volcanism. It also offers a source for [geothermal energy](/wiki/geothermal_energy).
+## See also
+- [Mantle](/wiki/mantle)
+- [Core](/wiki/core)
+- [Volcano](/wiki/volcano)
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