Question

What region of the Earth takes up the greater volume?
A. The inner core
B. The crust
C. The mantle
D. The outer core

Answer 1

Hint: The Earth consists of four layers in its interior, each showing signs of different features of temperature, pressure and heat. This is the middle layer of the interior of the earth.

Complete answer: Option A: The innermost geological layer of the Earth’s interior is the Earth’s Inner Core. It has become a solid mass of ball because of extreme pressure present there. The inner core of the earth has a radius of about 1221 km (on the basis of the seismic data) and has a volume of 7.6 million cubic km. Yet, the inner core of the Earth’s interior represents less than 1% of the Earth.
Option B: The outermost layer of the Earth’s interior is the Crust of the Earth. It is made up of rocks and minerals. It ranges in depth from approximately 5-70 km. Its volume makes up only 1% of the entire volume of the earth’s interior.
Option C: Mantle is a middle layer of the interior of the Earth. It is a layer of silicate rock between the crust and the outer core of the interior. It takes up 67% of the mass of the Earth, it has a thickness of about 2,900 kilometres (1,800 miles) that makes up about 84% of the earth’s volume.
Option D: The outer core of the Earth’s interior is mostly made up of iron and nickel and lies between the Earth’s solid inner core and the mantle. It has a thickness of about 2,400 kilometres (1,500 miles) and takes up to 15% of the volume of the Earth's interior.

Thus, from the above analysis it can be seen that, option C, represents the correct answer. Hence, the region of the Earth that takes up the greatest volume is the mantle.

Note: The mantle of the Earth is composed mainly of very hot and dense thick rocks. The movement of the mantle is responsible for tectonic plates to move on the Earth’s surface. Majority of the terrestrial objects, asteroids, and even some planetary moons have mantles of their own.