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What is the correct relation between planetesimals and protoplanets?

Answer and explanation

Correct answer: Protoplanets form by the joining of planetesimals

The governing concept is accretion during the formation of the Solar System. In the early solar nebula, dust and rock particles collided and stuck together, gradually producing kilometre-sized planetesimals. Continued collisions and gravitational attraction caused many planetesimals to combine into larger bodies called protoplanets. With further accretion and differentiation, these protoplanets developed into planets. Therefore option C correctly states the relationship and the direction of growth: small planetesimals join to form larger protoplanets. Option A reverses the sequence, B incorrectly says they become stars, and D ignores their central role in planetary formation.

Related tags

PlanetesimalsProtoplanetsAccretionEarly And Modern TheoriesThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

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