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What would happen if the earth`s core was made of radio-active elements? No website is giving the answer

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    $\begingroup$ Hi user46235. What would happen with what? The shape of human buildings? Jupiter's orbit? Earth's surface gravity? The number of mosquitoes in Zimbabwe? Generally, questions on the form "what would be the effects on society of X?" (for some given "X") are considered too broad, and this seems to me to be even broader because you don't even ask about society, but something even less bounded. Also, how is this related to climate change? Please Edit your question to clarify what you're asking, or it may be at risk of being closed (as it currently stands, likely as "too broad"). $\endgroup$ – a CVn Dec 29 '17 at 6:27
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    $\begingroup$ Why do you think the Earth's core is not made of radioactive elements? Because it is: physicsworld.com/cws/article/news/2011/jul/19/… $\endgroup$ – jamesqf Dec 29 '17 at 6:27
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Radioactive decay is the reason why some planet core is still molten. This is also the case for Earth.

Radioactive elements decay, emitted radiation (be it gamma, beta or alpha) is absorbed by the atoms in the core and converted to heat.

Mars is believed to have lost this heat source some time ago, undergoing shrinkage (which is supposed to be the trigger for the creation of Valles Marineris) and losing the dynamo generating the magnetic field.

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