Q3] Name different layers of atmosphere . Also mention one feature of each. pls ans fast
Answers
Answer:
The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere.
Troposphere
The troposphere (between 0 and about 15 kilometers) is the first layer above the Earth’s surface and contains approximately 85 to 90 % of the mass of the Earth’s atmosphere. It is characterized by decreasing temperature with increasing altitude.
The troposphere’s thermal profile is largely the result of the heating of the Earth’s surface by incoming solar radiation. Heat is then transferred up through the troposphere by a combination of convective and turbulent transfer. Weather occurs in the Earth’s troposphere.
Stratosphere
In the stratosphere (between approximately 15 and 50 km) the temperature rises as a function of increasing height.
This warming is the result of the direct absorption of solar radiation by the ozone layer, thereby preventing a large part of harmful ultraviolet radiation from the sun to reach the Earth’s surface.
Mesosphere
The mesosphere is the next layer of the atmosphere (from 50 to 90 km), characterized by temperatures that decrease the further up one goes to an average of -90°C.
A lot of meteors burn up in this layer while entering the Earth’s atmosphere.
Thermosphere
Thereafter the thermosphere takes over where temperatures increases steadily with altitude. It is the layer of the atmosphere which is first exposed to the Sun’s radiation.
The thermosphere also includes the ionosphere, a region of the atmosphere that is filled with charged particles, where especially the auroras occur.
Exosphere
The upper limit of Earth’s atmosphere is the exosphere where the atmosphere merges into space.
Explanation:
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Answer:
Troposphere, stratosphere, mesosphere and thermosphere