Question

1. list the layers of the earths interior from least dense to most dense.

Explanation:

Earth's interior layers have increasing density with depth, as pressure compresses materials more closer to the core. The crust is the outermost, least dense layer; the mantle is denser than the crust; the outer core is liquid metal and denser than the mantle; the inner core is solid metal, the most dense layer due to extreme pressure.

Answer:

1. Crust
2. Mantle
3. Outer Core
4. Inner Core