How does the density of the earth's interior changes with depth?

Question

describe it

Answer 1

The center or inner core is the most dense as it is almost 95% Iron. The outer core is only slightly less dense that the inner core but it is molten. The Mantle is much less dense that either of those two and is also molten but it is much more viscous. The upper mantle is a little bit less dense than the mantle and it made up of pretty much the same composition as the mantle is. The crust is the least dense and it is solid.