Correct Answer: Fusion Reaction
The enormous amount of energy emitted by the Sun is produced through nuclear fusion occurring in its core. During fusion, hydrogen nuclei combine under extremely high temperatures and pressures to form helium, releasing a tremendous amount of energy according to Einstein's equation, E = mc². This energy travels through the Sun as electromagnetic radiation and eventually reaches Earth as sunlight and heat. Solar energy supports photosynthesis, drives weather systems, regulates Earth's climate, and makes life possible. Unlike nuclear fission, which splits heavy atoms, nuclear fusion combines light atoms and produces far more energy with minimal radioactive waste. Scientists are actively researching controlled fusion as a future source of clean and sustainable energy.
- Reaction: Nuclear fusion.
- Fuel: Hydrogen nuclei.
- Product: Helium.
- Importance: Source of sunlight and heat.
- Correct Answer: Fusion Reaction.