What is another word for central-fire?
Pronunciation: [sˈɛntɹə͡lfˈa͡ɪ͡ə] (IPA) 
Central-fire is a term that refers to the internal heat source of the Earth. This heat is generated by the radioactive decay of elements such as uranium, thorium, and potassium that are found within the Earth's mantle and core. There are many synonyms for the term central-fire, including inner heat, core heat, subterranean heat, and geothermal energy. Geothermal energy is a form of renewable energy that is produced by using the heat from the Earth's central-fire to generate electricity. This energy is becoming increasingly popular as a sustainable alternative to fossil fuels and is a major driver in the transition towards a more sustainable future.
