Question

Explain the structure of the atmosphere?​

Answer 1

Answer:

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The atmosphere can be divided into layers based on its temperature, as shown in the figure below. These layers are the troposphere, the stratosphere, the mesosphere and the thermosphere. A further region, beginning about 500 km above the Earth's surface, is called the exosphere.

Answer 2

Explanation:

1)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.

2)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.

3)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.

4)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.

Ionosphere

The lower Thermosphere is called the Ionosphere.

The ionosphere consists of electrically charged particles known as ions.

This layer is defined as the layer of the atmosphere of Earth that is ionized by cosmic and solar radiation.

It is positioned between 80 and 400 km above the Mesopause.

5)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.