alleryWhich is the principal source of energy on Earth?
ASun
BWind
CTides
DGeothermal heat
Answer & Solution
Correct answer: A. Sun
1. The sun drives almost every form of energy on Earth.
2. Fossil fuels are stored solar energy from ancient plant life.
3. Winds blow because of solar heating of the air.
4. Even the water cycle that drives hydro power comes from solar energy.
5. So the sun is the principal source of energy.
_Source: syllabus Science Ch 14 'Sources of Energy' (byjus.com extract)_
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