Question

The uppermost layer of the Earth is:
(A). A huge single piece
(B). fragmented
(C). In two large pieces
(D). None of the above

Answer 1

Hint: The Earth is divided into three main parts-the core, the mantle and the crust. The outermost layer is the only part where life is possible. The other parts except the crust are extremely hot and constitute most of the density of the Earth. The inner parts are solid as well as liquid while the outermost layer is completely solid.

Complete answer:
The earth is made up of three parts- the core, the mantle and the crust.
The Earth’s innermost part is core. It is made up of hot molten metals and is the centre as well as the hottest part. The core is solid from the inside but its outer part is liquid.
The second layer is called the mantle. It lies between crust and core. It is the largest part of Earth and accounts for about eighty four percent of the Earth’s volume. The mantle is mostly solid.
The solid outermost part of the Earth is called the crust. It is the coolest part and the only part of the Earth where life is possible. It accounts for only one percent of the Earth’s volume. The Earth’s crust is broken up into several tectonic plates which are continuously moving. These plates converge, pull apart or slide over each other.
Since the crust which is the uppermost layer of the Earth is made up of several tectonic plates.

Therefore, the correct option is (D). None of the above.

Note:
The inner part of the core is as hot as the surface of the sun. It has molten metals which move to create high turbulent currents producing electric fields which in turn produces the Earth’s magnetic field. The shifting of tectonic plates produces large vibrations which causes earthquakes and tsunamis on the Earth’s surface.