Question

Based on the Nebular theory, which of these best describes how the center of a new planetary system is formed?

by the merging of atoms

by the splitting up of atoms

by the rotation of the moons of the planets

by the gravitational pull of the moons of the planets

Answer 1

Answer: Option (1)

Step-by-step explanation: According to the nebular theory, the planetary system was formed by the initial accumulation of atoms, along with other gases and dust particles. Due to the effect of sun's gravity, these group of atoms, forming materials started revolving round the sun making a disc which is commonly known as the accretionary disc. Materials within the disc further undergoes accretion and forms the center of a planet.

Thus, the correct answer is option (1).

Answer 2

I think the correct answer from the choices listed above is the last option. Based on the Nebular theory, the center of a new planetary system is formed by the gravitational pull of the moons of the planets. Gravity pulled together low-density cloud of interstellar gas and dust. Hope this answers the question.