GEOLOGY

Detailed explanation-1: -The mantle is the mostly solid bulk of Earth’s interior. The mantle lies between Earth’s dense, super-heated core and its thin outer layer, the crust. The mantle is about 2, 900 kilometers (1, 802 miles) thick, and makes up a whopping 84 percent of Earth’s total volume.

Detailed explanation-2: -The thickest interior layer of the Earth is the mantle, which is about 1800 miles thick. The layer called the outer core is about 1400 miles thick. The thinnest interior layer of the Earth is the inner core, which is just about 800 miles thick.

Detailed explanation-3: -The troposphere is the densest atmospheric layer, compressed by the weight of the rest of the atmosphere above it.

Detailed explanation-4: -Crust is thickest where there are mountains, so the Moho will be deeper under mountains than under the oceanic crust. Since oceanic crust is also denser than continental crust, it floats lower on the mantle.

Detailed explanation-5: -The thickness of the upper mantle is about 640 km (400 mi). The entire mantle is about 2, 900 km (1, 800 mi) thick, which means the upper mantle is only about 20% of the total mantle thickness.