Question

What is atmosphere ​

Answer 1

Answer:

An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body

Answer 2

$\huge \leadsto \: \bf{ \pmb{ \blue { \overline{ \underline{ \mid \: \: ATMOSPHERE \: \: \mid}}}}}$

• Atmosphere is the mixture of gases which surrounds Earth.

• Without the atmosphere there could be no life on Earth.

• The atmosphere keeps the climate on Earth moderate compared to that of other planets.

• The composition of the earth atmosphere is about 78% nitrogen , 21%oxygen , 0.9% argon with water vapour ,carbon dioxide and other gasses.

• The gravitational pull of the earth keep the atmospheric layer close to the earth.

Different layers of atmosphere :-

Trophosphere

• 8- 16 km from earth surface.
• Temperature is decreasing with increasing altitude.
• all weather phenomena happens in this layer.

Stratosphere

• 16 to 50 km from Earth Surface
• Temperature is increasing with increasing altitude, because of presence of ozone layer which aborbs the ultraviolet radiations and increase the temperature.

Mesosphere

• 50-80 km
• Coolest temperature of earth found at the top point of this layer.

Thermosphere

• 80 to 400 km
• All radio wave radiation found in this layer, which is used for signal transmission of TV, Bluetooth, Wi-Fi etc.

Exosphere

• It is the outer most layer.

▬▭▬▭▬▭▬▭▬▭▬▭▬▭▬▭▬▭▬▭▬