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Title: Explain how radioactive decay has always warmed the earth from the inside, and n Post by: einsteindude on Nov 29, 2014 Explain how radioactive decay has always warmed the earth from the inside, and nuclear fusion has always warmed the earth from the outside.
A) Much heat was released as matter coalesced to form the earth. This heat resulted in the production of radioactive isotopes, which still reside within the earth today and are a source of internal heat. Our primary external source of heat is from the fusion of hydrogen within the sun. B) The inner Earth is made of fissioning heavy elements while the sun is made of lighter fusing elements. C) Radioactive elements have been within Earth since it was created while the sun is made of fusing hydrogen atoms. D) All of the above are reasonable answers. Title: Re: Explain how radioactive decay has always warmed the earth from the inside, and n Post by: bSharp on Dec 4, 2014 Content hidden
Title: Re: Explain how radioactive decay has always warmed the earth from the inside, and n Post by: bSharp on Dec 4, 2014 Super! Don't forget to mark my post as best answer ;D
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