Question

Explain the effect of altitude on pressure and density of air ?

Answer 1

Hᴇʀᴇ's Yᴏᴜʀ Aɴsᴡᴇʀ:-

Aʟᴛɪᴛᴜᴅᴇ ɪs Hᴇɪɢʜᴛ Aʙᴏᴠᴇ Sᴇᴀ Lᴇᴠᴇʟ. Tʜᴇ Dᴇɴsɪᴛʏ ᴏғ Aɪʀ Dᴇᴄʀᴇᴀsᴇs Wɪᴛʜ Hᴇɪɢʜᴛ. Tʜᴇʀᴇ Aʀᴇ Tᴡᴏ Rᴇᴀsᴏɴs:- ᴀᴛ Hɪɢʜᴇʀ Aʟᴛɪᴛᴜᴅᴇs, Tʜᴇʀᴇ ɪs Lᴇss Aɪʀ Pᴜsʜɪɴɢ Dᴏᴡɴ Fʀᴏᴍ Aʙᴏᴠᴇ, Aɴᴅ Gʀᴀᴠɪᴛʏ ɪs Wᴇᴀᴋᴇʀ Fᴀʀᴛʜᴇʀ Fʀᴏᴍ Eᴀʀᴛʜ's Cᴇɴᴛᴇʀ. Sᴏ ᴀᴛ Hɪɢʜᴇʀ Aʟᴛɪᴛᴜᴅᴇs, Aɪʀ Mᴏʟᴇᴄᴜʟᴇs Cᴀɴ Sᴘʀᴇᴀᴅ Oᴜᴛ Mᴏʀᴇ, Aɴᴅ Aɪʀ Dᴇɴsɪᴛʏ Dᴇᴄʀᴇᴀsᴇs.

Hᴏᴘᴇ ɪᴛ Hᴇʟᴘs ᴜʜ.....

Hᴀᴠᴇ ᴀ Gʀᴇᴀᴛ Dᴀʏ.....

Answer 2

Answer:

Altitude is height above sea level. The density of air decreases with height. They are two reasons :at higher altitude, they are less air pushing down above, and gravity is weaker farther from earth's centre. So at higher altitude, air molecules can spread out more, and air density decreases (figure below)