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What is the next larger body generally called when planetesimals join together?

Answer and explanation

Correct answer: Protoplanet

The governing concept is the accretion sequence in the formation of planets. In a young planetary system, dust and small solid particles collide and stick together, gradually forming planetesimals. When many planetesimals merge under gravity, they produce a larger developing body called a protoplanet, or planetary embryo. Continued accretion and internal differentiation may eventually allow a protoplanet to become a full-sized planet. Therefore option B is correct. A comet is a smaller icy body with a distinctive orbit and, near a star, a visible coma or tail. A star forms mainly through the gravitational collapse of gas and begins nuclear fusion; it is not produced by the joining of planetesimals. A nebula is a large cloud of gas and dust, not the immediate next body in this sequence.

Related tags

GeographyPlanet FormationPlanetesimalsProtoplanetStar 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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