The source of the Sun's energy is the process of ____________?
Correct answer: C. Nuclear fusion
- A. Photoelectric emission
- B. Nuclear fission
- C. Nuclear fusion
- D. Thermionic emission
Explanation
In the Sun's core, hydrogen nuclei combine to form helium through nuclear fusion, releasing energy because a small amount of mass is converted into energy. Fission instead splits heavy nuclei and does not power the Sun.
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