Question

Discuss the struction of the atmosphore​

Answer 1

Explanation:

The atmosphere has 4 layers: the troposphere that we live in near the surface of the earth; the stratosphere that houses the ozone layer; the mesosphere, a colder and lower density layer with about 0.1% of the atmosphere; and the thermosphere, the top layer, where the air is hot but very thin.

Answer 2

There are five layers in the structure of the atmosphere depending upon temperature. These layers are:

• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere
• Exosphere

TROPOSPHERE

• It is considered as the lowest layer of Earth’s atmosphere.
• The troposphere starts at the surface of the earth and goes up to a height of 7 to 20 km.
• All-weather occurs within this layer.
• This layer has water vapor and mature particles.
• Temperature decreases at the rate of 1 degree Celsius for every 165 m of height.
• Tropopause separates Troposphere and Stratosphere.

STRATOSPHERE

• It is the second layer of the atmosphere found above the troposphere.
• It extends up to 50 km of height.
• This layer is very dry as it contains little water vapour.
• This layer provides some advantages for flight because it is above stormy weather and has steady, strong, horizontal winds.
• The ozone layer is found in this layer.
• The ozone layer absorbs UV rays and safeguards earth from harmful radiation.
• Stratopause separates Stratosphere and Mesosphere.

MESOSPHERE

• The Mesosphere is found above the stratosphere.
• It is the coldest of the atmospheric layers.
• The mesosphere starts at 50 km above the surface of Earth and goes up to 85 km.
• The temperature drops with altitude in this layer.
• By 80 km it reaches -100 degrees Celsius.
• Meteors burn up in this layer.
• The upper limit is called Mesopause which separates Mesosphere and Thermosphere.

THERMOSPHERE

• This layer is found above Mesopause from 80 to 400 km.
• Radio waves that are transmitted from the earth are reflected by this layer.
• The temperature increases with height.
• Aurora and satellites occur in this layer.

EXOSPHERE

• It is the outermost layer of the atmosphere.
• The zone where molecules and atoms escape into space is mentioned as the exosphere.
• It extends from the top of the thermosphere up to 10,000 km.