If the terrestrial planets were formed by homogeneous accretion, then
A)they were initially molten forming an iron core first, then they accreted a silicate crust later.
B)they were initially molten forming a silicate core first, then they accreted an iron crust later.
C)they were initially collections of solid particles which melted then differentiated into a high-density iron metal core and low-density silicate crust.
D)they were initially collections of solid particles which melted then differentiated into a high-density silicate core and low-density iron metal crust.

Question

Quizplus · Accepted Answer

Homogeneous accretion suggests that terrestrial planets started as collections of solid particles. These particles then melted due to heat from impacts, radioactive decay, or gravitational compression, leading to differentiation based on density. This process resulted in the formation of a high-density iron metal core surrounded by a low-density silicate crust.

If the Terrestrial Planets Were Formed by Homogeneous Accretion, Then