Question

define exosphere,thermosphere,mesosphere, stratosphere, troposphere​

Answer 1

Question

• define exosphere

Answer

• The exosphere is a thin, atmosphere-like volume surrounding a planet or natural satellite where molecules are gravitationally bound to that body, but where the density is too low for them to behave as a gas by colliding with each other

Question

• define thermosphere

Answer

• The thermosphere is the layer in the Earth's atmosphere directly above the mesosphere and below the exosphere. Within this layer of the atmosphere, ultraviolet radiation causes photoionization/photodissociation of molecules, creating ions; the thermosphere thus constitutes the larger part of the ionosphere.

Question

• define mesosphere

Answer

• The mesosphere is the third layer of the atmosphere, directly above the stratosphere and directly below the thermosphere. In the mesosphere, temperature decreases as altitude increases

Question

• define stratosphere

Answer

• The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere

Question

• define troposphere

Answer

• The troposphere is the lowest layer of Earth's atmosphere, and is also where nearly all weather conditions take place. It contains 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols.

Answer 2

$\sf\bold{Troposphere:}$

1. It is the first and the most important layer of atmosphere.
2. It extends upto a height of 13km.
3. The air we breathe exists here.
4. Almost all the weather phenomena like rainfall , fog and hailstorm occur in this layer.

$\sf\bold{Stratosphere:}$

1. It is the second layer of atmosphere above the Troposphere.
2. It extends upto a height of 50km.
3. This layer is almost free from clouds and phenomenon.
4. This layer is ideal for flying aeroplanes.
5. It contains a layer of ozone gas which protects us from the harmful sun rays.

$\sf\bold{Mesosphere:}$

1. This is the third layer of the atmosphere lying above the stratosphere.
2. It extends upto the height of 80km.
3. Meteorites burn up in this layers on entering from the space.

$\sf\bold{Thermosphere:}$

1. In the thermosphere temperature rises very rapidly with increasing height.
2. ionosphere is a part of this layer.
3. This layer helps in radio transmission.

$\sf\bold{Exosphere:}$

1. It is the upper most layer of the atmosphere.
2. This layer has very thin layer.
3. It gases like helium and hydrogen float into the space from here.