Question

what is atmosphere? Describe it's layers. ​

Answer 1

Answer:

the envelope of gases surrounding the earth or another planet is called Atmosphere

Explanation:

there r five layers

Troposphere

Stratosphere

Mesosphere

Thermosphere

Exosphere

Answer 2

$\small{\underline{\mathcal{\orange{ATMOSPHERE-}}}}$ᴛʜᴇ ᴇɴᴠᴇʟᴏᴘᴇ ᴏғ ᴀɪʀ ᴛʜᴀᴛ ᴄᴏᴍᴘʟᴇᴛᴇʟʏ sᴜʀʀᴏᴜɴᴅs ᴛʜᴇ ᴇᴀʀᴛʜ ɪs ᴋɴᴏᴡɴ ᴀs $\small{\underline{\mathcal{\purple{ᴀᴛᴍᴏsᴘʜᴇʀᴇ}}}}$. ᴛʜᴇ ᴀᴛᴍᴏ-sᴘʜᴇʀᴇ ᴇxᴛᴇɴᴅs ᴛᴏ ᴀʙᴏᴜᴛ 1000 ᴋᴍ ғʀᴏᴍ ᴛʜᴇ sᴜʀғᴀᴄᴇ ᴏғ ᴛʜᴇ ᴇᴀʀᴛʜ.

$\gray{ \tt{LAYERS\:OF \:THE\: ATMOSPHERE-}}$

⠀⠀⠀⠀⠀⠀${\huge{\color{green}{\mathfrak{\color{#FFD600} {\underline{\underline{ｲroposphere}}}}}}}$

• This is the $\small{\underline{\mathcal{\green{ first \:layer}}}}$ of the atmosphere.

• It extends to a height of $\small{\underline{\mathcal{\red{18 \:km \:at \:the \:equator}}}}$ and $\small{\underline{\mathcal{\red{8 \:km}}}}$$\small{\underline{\mathcal{\red{at \:the\:poles.}}}}$

• In this layer temperature decreases with height. The height at which the temperature stop decreasing is called $\small{\underline{\mathcal{\pink{tropopause.}}}}$

⠀⠀⠀⠀⠀${\huge{\color{green}{\mathfrak{\color{#311B92} {\underline{\underline{丂tartosphere}}}}}}}$

• This the $\small{\underline{\mathcal{\blue{second\: layer}}}}$ of the atmosphere.

• It extends from the tropopause to about $\small{\underline{\mathcal{\green{50 km.}}}}$

• This layer is free from clouds and associated weather phenomena. Hence, it $\small{\underline{\mathcal{\orange{provides \:ideal\: flying}}}}$ conditions for large jet planes.

⠀⠀⠀⠀⠀⠀${\huge{\color{green}{\mathfrak{\color{cyan} {\underline{\underline{Ⲙesosphere}}}}}}}$

• Above the stratosphere lies the mesosphere.

• The mesosphere extends to a height of $\small{\underline{\mathcal{\purple{80 km}}}}$. Here the temperature decreases again, falling as low as $\small{\underline{\mathcal{\orange{-90°C.}}}}$

• The end of this layer is known as the $\small{\underline{\mathcal{\green{mesopause.}}}}$

⠀⠀⠀⠀⠀${\huge{\color{green}{\mathfrak{\color{#00796B} {\underline{\underline{Ŧhermosphere}}}}}}}$

• The thermosphere lies above the mesosphere.

• This layer, according to NASA, extends to a height of about $\small{\underline{\mathcal{\red{513 km.}}}}$

• This increase in temperature due to the fact that gas molecules in this layer absorb $\small{\underline{\mathcal{\blue{UV\: rays \:and\: X - rays.}}}}$

⠀⠀⠀⠀⠀⠀⠀${\huge{\color{green}{\mathfrak{\color{#AD1457} {\underline{\underline{Exosphere}}}}}}}$

• This is the $\small{\underline{\mathcal{\red{outermost\: layer}}}}$ of our atmosphere, which lies above the thermosphere.

• The exosphere extends beyond the thermosphere upto $\small{\underline{\mathcal{\pink{960 km.}}}}$

• This layer contains only traces of gases like oxygen, nitrogen, argon and helium. And its temperature range from about $\small{\underline{\mathcal{\purple{300°C \:to\: 1650°C.}}}}$

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