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Conservation of angular momentum explains which event in the origin of the solar system?

Answer and explanation

Correct answer: Faster rotation of the contracting nebula

The correct answer is D. In the nebular hypothesis, the early solar system began as a large, rotating cloud of gas and dust. As gravity caused the nebula to contract, its radius decreased. If external torque was negligible, angular momentum remained conserved, expressed broadly as L = Iω. A smaller radius reduces the moment of inertia I, so the angular speed ω increases; this is why a contracting nebula rotates faster and tends to flatten into a rotating disc. Rainfall, ocean colour, and the Moon's surface are not consequences of this conservation principle in solar-system formation. The concept is similar to a skater spinning faster while drawing in the arms.

Related tags

Angular MomentumNebular HypothesisSolar System FormationGeographyStar FormationFormation Of PlanetsAnd Our Solar SystemStar Formation Formation Of Planets And Our Solar SystemThe Origin And Evolution Of The EarthClass 11 Mcq

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