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Which process is responsible for the release of energy in the Sun?
Nuclear Fission
Nuclear Fusion
Chemical Combustion
Radioactive Decay
Nuclear Fusion
The Sun generates energy through nuclear fusion, a process where hydrogen nuclei fuse under extreme temperature and pressure to form helium. This reaction releases a massive amount of energy in the form of electromagnetic radiation due to mass-energy equivalence.
The Sun generates energy through nuclear fusion, a process where hydrogen nuclei fuse under extreme temperature and pressure to form helium. This reaction releases a massive amount of energy in the form of electromagnetic radiation due to mass-energy equivalence.
The Sun is the primary source of energy for the Earth's biosphere and governs the Earth's climate and seasonal cycles through its orbital mechanics.
Nuclear fusion involves the merging of light atomic nuclei to form a heavier nucleus.
In the Sun, the proton-proton chain reaction is the dominant fusion process.
Energy released is calculated by Einstein's mass-energy equivalence principle, E=mc squared.
Hydrogen accounts for approximately 73% of the Sun's mass, while Helium accounts for about 25%.
Nuclear fission, used in nuclear power plants, involves splitting heavy nuclei, which is the opposite of the process occurring in stars.
Chemical combustion involves the rearrangement of electrons in molecules, which is millions of times less energetic than nuclear fusion.
B is correct тАФ Nuclear fusion is the physical process responsible for the sustained energy release in the Sun.
In exams, distinguish between 'Nuclear Fission' (used in atom bombs/power plants) and 'Nuclear Fusion' (used in hydrogen bombs/stars); fusion requires significantly higher activation temperatures.
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