Question

Which statements describe processes involved in the accretion of planetesimals and protoplanets? Check all that apply.

Answer 1

Answer: 2 and 4

Explanation: Accretion can be defined as the accumulation of coastal sediment, sand or land mass on a tectonic plate at a subduction zone over time.

Planetesimals refers to the small celestial bodies of a combination of dust, rock and gas which combines to form the planets, after the solar system begin to form.

Protoplanets can be defined as a large collection of matter within a giant cloud of gas and dust in orbit around the sun and developing into a planet. Thus, a protoplanet is a large planetary embryo in its early stages of evolution through accretion.

Answer 2

•Both involve the formation or solid particles from nebular materials

•Both involve the trapping of gases and the clumping of masses and matter