Physics
Grade-7
Easy
Question
The energy coming from the Sun for the last billion years is the result of a
- Heat reactions
- Nuclear reactions
- Molecular reactions
- Potential reaction
Hint:
Nuclear reactions
The correct answer is: Nuclear reactions
the source of the energy in the sun is nuclear fusion reaction in which the hydrogen nuclei fuses into helium nuclei. Fusion occurs when protons of hydrogen atoms violently collide in the sun's core and fuse to create a Helium atom. This process, known as a proton-proton chain reaction, emits an enormous amount of energy.
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