2Sun_Moon_Earth_Water_Energy_Ctools_109_March_5

2Sun_Moon_Earth_Water_Energy_Ctools_109_March_5 - is...

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The SUN A huge natural nuclear reactor operating by fusion
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Before humans started producing nuclear energy, nuclear energy was being produced naturally. Where? - in the sun, for example, and many other stars - in the Earth’s interior (crust and mantle, for example) (that is how noble gases and heat are produced in the Earth…) Production of nuclear energy Fusion : two atoms of hydrogen (deuterium) are joined together (or fuse) to create a single larger atom (helium); energy (heat) is released in the process; Fission : the splitting of an atom into smaller ones; energy is released and the sum of the masses of the fission products
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Unformatted text preview: is smaller than the original mass; fission is accomplished when a radioactive atom is bombarded by neutrons; Radioactive decay Nuclear energy production due to natural radioactive decay Radioactive materials undergo a process of spontaneous decay , in which big atoms or nuclides disintegrate to form other atoms that maybe, in turn, are also unstable and thus, also decay. This decay process will go on until a stable nuclide is finally formed. It is through radioactive decay of different elements that most of the noble gases in the Earth as well as heat are produced. , radioactive decay...
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This note was uploaded on 10/21/2009 for the course GEOSCI 250 taught by Professor Staff during the Spring '09 term at University of Michigan.

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2Sun_Moon_Earth_Water_Energy_Ctools_109_March_5 - is...

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