Question

The innermost layer of the earth's interior is called _____________.
A. sial
B. sima
C. nife
D. core

Answer 1

Hint: The inner layer is the center and is known to be the hottest layer of the Earth. The inner layer is solid due to which its particles are rigid and do not move from their place. It is made up of iron and nickel with a temperature of up to 5,500 oC.

Step by step solution:
The core is the innermost layer of the earth. It is mainly made of nickel and iron due to which it is also known as nife. The inner core is the center and is known to be the hottest layer of the Earth. The inner core is solid due to which its particles are rigid and do not move from their place. It is made up of iron and nickel with a temperature of up to 5,500 oC. Due to the immense heat energy provided by the inner core the center of Earth can be considered as an engine room. Earth comprises four separate and intricate layers. geologists believe that after the big bang as the Earth started to cool down, the heavier and the denser material sank into the center of the earth whereas and the lighter ones rose towards the top layer and formed the crust of Earth. At first, the earth was just a hot body of gases and fumes.

Therefore, option D is the correct answer.

Note: The outer part of the earth's surface is made of crust and mantle. Earth's lithosphere includes the crust and the uppermost mantle, which makes the hard outer layer of earth. Furthermore, the lithosphere is divided into tectonic plates. The movement of these plates leads to earthquakes. The uppermost layer of the lithosphere reacts with the atmosphere to form chemical compounds.