Question

The layer of gases Around the earth is called……………
a. Lithosphere
b. Hydrosphere
c. Atmosphere
d. Stratosphere

Answer 1

Hint:
The atmosphere consists of temperature-based layers. These layers are the troposphere, stratosphere, mesosphere and thermosphere. Another area about 500 kilometers above the surface of the earth is called the exosphere.

Complete answer:
The thin layer of gas surrounding the earth is called the atmosphere. It can protect all life on the earth, keep the temperature within a relatively small range, and block harmful sunlight.

Troposphere: The troposphere is the lowest layer in the atmosphere. It starts from the ground and extends upward to about 10 kilometers above sea level. The lowest part of the troposphere is called the boundary layer, and the top layer is called the tropopause.

Stratosphere: The stratosphere is located above the troposphere. It extends from the top of the troposphere to about 50 kilometers (31 miles) above the ground. The ozone layer lies within the stratosphere.

Mesosphere: Above the stratosphere is the mesosphere, which extends to a height of about 85 kilometers (53 miles) above the ground. Here, as the temperature increases, the temperature gradually decreases.

Thermosphere: The thermosphere is above the mesosphere and this is the region where the temperature rises as you rise. Exosphere: The exosphere is the last boundary of the natural gas envelope. The air in the exosphere is gradually leaking from Earth's atmosphere into outer space.

Hence, the correct answer is option C.

Note:
Unlike other layers in the atmosphere, the ionosphere is not an obvious layer. The ionosphere is a series of regions in the Mesosphere and part of the thermosphere in which high-energy radiation from the sun divides electrons from their parent atoms and molecules.