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> except for a comparatively little bit of radioactively decaying material inside the earth, and some tidal forces There's also geothermal energy. EDIT: I era
by jolmg 7y ago
> except for a comparatively little bit of radioactively decaying material inside the earth, and some tidal forces
There's also geothermal energy.
EDIT: I erased what I said about tidal forces. I thought it referred to all currents in the ocean, but it specifically refers to the periodic pull the moon has on the Earth, to greater effect, on its water.
- trenchgun 7y agoGeothermal comes from radioactively decaying material. Geothermal is powered by naturally occuring fission. https://blogs.scientificamerican.com/observations/nuclear-fission-confirmed-as-source-of-more-than-half-of-earths-heat/ https://blogs.scientificamerican.com/observations/nuclear-fi...
- jolmg 7y agoI didn't know that most geothermal energy was from fission, but as the article says, not all geothermal energy comes from fission. There's also the release of heat as the outer core solidifies into the inner core. That's what I previously thought that most geothermal energy was.
- beerandt 7y agoOnly about half. The rest is likely residual from gravitational and tidal friction/compression and possibly other unknown sources.