Question

Describe how density played a role in the differentiation of the Earth into its three main layers.

A) High-density materials rose to the surface
B) Low-density materials sank to the core
C) Random distribution of materials
D) Gravity had no impact on layer formation

Answer 1

Density was pivotal in Earth's differentiation into layers, with heavier materials sinking to form the core and lighter materials forming the crust and mantle.

Step-by-step explanation:

Density played a crucial role in the differentiation of the Earth into its three main layers: the crust, mantle, and core. This process of gravitational separation occurred early in Earth's history when the planet was hot enough for its interior to melt, allowing materials to move and separate based on their densities. The denser materials, primarily heavy metals like iron and nickel, sank towards the center to form the core, while lighter silicates rose to form the Earth's crust and mantle. Over time, as the Earth cooled, these layers solidified into their current form. Therefore, the correct answer is that high-density materials sank to the core, demonstrating that gravity significantly impacted layer formation.