Why do scientists feel the heaviest material sank to the center of the Earth? (1 point)

• as the earth cooled, all of the materials formed in the crust.
O as the earth cooled, the lighter materials settled to the bottom and the heavier materials rose to the top
• as the earth cooled, the heavier materials settled to the bottom and the lighter materials rose to the top.
O as the earth cooled, the materials crumbled.

The correct answer is:

• as the earth cooled, the heavier materials settled to the bottom and the lighter materials rose to the top.