GK
NUCLEAR SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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occurs in power plant
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occurs in the cores of sun and other stars.
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occurs in the cores of Earth and other planets
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None of the above
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Detailed explanation-1: -Nuclear Fusion reactions power the Sun and other stars. In a fusion reaction, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei. The leftover mass becomes energy.
Detailed explanation-2: -Nuclear fusion of to form helium occurs naturally in the sun and other stars. It takes place only at extremely high temperatures.
Detailed explanation-3: -Most commonly, in the core of a star, two hydrogen atoms fuse to become a helium atom. Although nuclear fusion reactions require a lot of energy to get started, once they are going they produce enormous amounts of energy (Figure below).
Detailed explanation-4: -The core is the source of the Sun’s energy, the site of thermonuclear fusion.
Detailed explanation-5: -The collisions which occur between the hydrogen atoms starts to heat the gas in the cloud. Once the temperature reaches 15, 000, 000 degrees Celsius, nuclear fusion takes place in the center, or core, of the cloud. The tremendous heat given off by the nuclear fusion process causes the gas to glow creating a protostar.