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How has nuclear fusion always warmed the earth from the inside?
Much of the heat in the core of the Earth is residual from heat created billions of years back, and some of this was created in fusion reactions in stars. There are other nuclear actions at work in the core of the Earth, however. The more important of these is nuclear decay, which is what most radioactive atoms undergo. This releases energy in the form of heat, which is the trapped underground until it can escape - a very long time. Less commonly, some isotopes, most notably uranium-235, undergo fission. This is a much more energetic process, but is not common because there is not much of this isotope around.
How much nuclear fusion is used to day?
None
How much waste does nuclear fusion produce?
Nuclear fusion produces very little waste compared to nuclear fission. The waste produced by nuclear fusion is mainly low-level radioactive material, which is easier to manage and has a shorter lifespan.
What is main disadvantage of fusion?
It requires almost as much energy to create nuclear fusion as the energy it creates. :)
Describe the energy of nuclear fusion?
Nuclear fusion has not yet been achieved on Earth but it is the process by which the un and stars are believed to gain their energy. At the moment nuclear reactors use nuclear fission, which is the splitting of radioactive nucleii. Nuclear fussion is the combining, or the fusion, of atoms which would release much much more energy. Many scientists believe that this is the way we need to go to solve the energy crisis.
What are some environmental health concerns regarding nuclear fusion?
Nuclear fusion has not yet reached the point where it is practical for commercial use. However, it seems that it will cause much less polution than nuclear fission.
What is fusion in the stars?
Atomic fusion is the process by which elements which are brought into intimate contact, will undergo fusion, and will form a heavier element, and will emit energy in the process. Much of this released energy is the from the 'binding energy' of the atom.
Does lightning produce more power than nuclear fusion?
No, nuclear fusion produces vastly more power than lightning. Nuclear fusion is the energy source of the sun and other stars, generating massive amounts of energy through the fusion of atoms. Lightning, while powerful in a localized sense, is a discharge of static electricity that pales in comparison to the energy output of nuclear fusion.
What is the difference between hot nuclear fusion and cold nuclear fusion?
"Hot" nuclear fusion (this is not the term normally used) is exactly what the name implies, the materials are heated, which provides them with enough energy to overcome the normal repulsion of protons. Cold nuclear fusion requires no heating and has not yet been proved, although dozens of Physicists and Electro-Chemists have claimed to have created cold fusion. Cold Fusion relies on other forces, such as pressure, to overcome the electrostatic force of repulsion.
Does sun do combustion?
No, the sun does not undergo combustion. Combustion is a chemical reaction that typically involves oxygen and a fuel source, leading to the release of heat and light. The sun generates energy through nuclear fusion, the process in which hydrogen atoms are fused together to form helium, releasing immense amounts of energy in the form of heat and light.
Does the nuclear fusion occurs at the surface of the sun?
Fusion takes place in the core, where the temperature and pressure are much higher, which is necessary for fusion.
Is Neptune a sun?
No, Neptune is a planet. Stars are hot, glowing with the heat from nuclear fusion in their core. Neptune is cold, and much too small to have fusion.
