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: -Asthenosphere. The upper mantle is made of the lithosphere and the asthenosphere. However, the lithosphere is shared between the crust and the mantle, so, the uppermost layer of the mantle proper is the asthenosphere.

Detailed explanation-3: -Earth’s core is the very hot, very dense center of our planet. The ball-shaped core lies beneath the cool, brittle crust and the mostly-solid mantle. The core is found about 2, 900 kilometers (1, 802 miles) below Earth’s surface, and has a radius of about 3, 485 kilometers (2, 165 miles).

Detailed explanation-4: -Starting at the center, Earth is composed of four distinct layers. They are, from deepest to shallowest, the inner core, the outer core, the mantle and the crust. Except for the crust, no one has ever explored these layers in person. In fact, the deepest humans have ever drilled is just over 12 kilometers (7.6 miles).

Detailed explanation-5: -It’s composed of dark, dense rock, similar to oceanic basalt. The deeper you go inside the Earth, the hotter it gets. Mantle material near the cold outer crust is about 1300℉ (700℃) while rock near the Earth’s core heats up to about 7200℉ (4000℃).