Question

1. how does your model help explain why the earth has different layers instead of being the same throughout?

Explanation:

This refers to the planetary differentiation model, which explains that early Earth was a molten mixture. Denser materials (like iron, nickel) sank toward the center due to gravity to form the core, while less dense silicate materials rose to form the mantle and crust. This gravitational separation created distinct layers instead of a uniform structure.

Answer:

The planetary differentiation model explains this: early Earth was molten, and gravity pulled denser materials (e.g., iron, nickel) to form the core, while less dense silicate materials rose to form the mantle and crust, creating distinct layers rather than a uniform composition.