Are there any similarities between solar and nuclear energy?
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Answer:
Yes, because the energy the sun produces comes via a process called nuclear fusion, which is the same kind of process which occurs in a hydrogen bomb. Most of the mass of the sun, like all stars, starts out as hydrogen gas. The tremendous pressure at the centre of the sun causes the hydrogen atoms to overcome their natural repulsion and get squeezed together forming helium gas. Hence the term nuclear fusion.This conversion of hydrogen to helium gas takes millions of years and it gives off a lot of energy, which we get as sunlight.
Nuclear reactors on Earth also use the stored up energy in atoms, but by a rather different and easier way. They use the fission process, which involves splitting Uranium atoms. Those atoms are complex and unstable, and so easier than other atoms to split. Each time one explodes, it realeases energy, and a whole lot of neutrons from the centre of the atom, which spray around like bullets hitting nearby Uranium atoms and exploding them and so on. This is called a chain reaction, and in a simple atom bomb, it is an uncontrolled chain reaction, so that all the energy in the Uranium block in the bomb is released in a fraction of a second. BOOM!. On the other hand if you can control this chain reaction so that it takes place over years instead of a nanosecond, you get the energy that comes out of a nuclear reactor, which is like an atom bomb in slow motion. Remember, simple atom bombs and nuclear reactors get their energy by nuclear fission (splitting Uranium atoms apart), and the Sun, and the Hydrogen bomb, gets its by nuclear fusion (combining atoms together), but BOTH are types of nuclear energy, using the energy liberated when atoms are smashed apart or squeezed together. This is totally different to the energy you get from burning wood or gas, which is chemical energy, which involves changes to the electron belts surrounding the nucleus, but leaves atomic nucleii untouched.
The Holy Grail of Energy production is to build a nuclear reactor which can use the fusion process to create energy, like creating a miniature sun on the Earth. Advantages: 1. The fuel used is hydrogen, which is enormously plentiful, as opposed to Uranium, which is rare. 2. Uranium is very radioactive and dangerous (remember Chernobyl?) Disadvantages: the technological problems are extremely difficult, and no one has been able to do it yet, although experimental reactors, worth billions of dollars, keep at it. The problem in a nutshell is that you have to subject microscopic amounts of hydrogen to pressures and temperatures equal to those at the centre of the sun, while keeping them steady in the same spot, and not melting the reactor, and that ain’t easy.
1. Neither include combustion of fuel, so they don't emit carbon dioxide.
2. Some solar energy is used to heat water, and so does nuclear energy.
Besides producing electricity, there basically are no other similarities besides neither consume fossil fuels. On the other hand, nuclear energy produces radioactive waste, which is pretty bad, maybe as bad as burning fossil fuels.
Neither produce greenhouse gases.
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