ENVIRSC 1C03 Lecture Notes - Lecture 3: Mount Everest, Surface 3, Barometer
3 Sep 2018
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When flying in a plane, the cabin pressure will decrease if there is a hole. The pressure will decrease because the air molecules want to surround the plane where there is a less amount of air molecules (diffusion) You will need an oxygen tank when climbing mount everest because the higher the altitude, the less amount of air molecules are in the air. Because we are above 60% of the earth"s air molecules: atmospheric pressure. Atmospheric pressure: the force exerted on the earth by the air molecules (atmosphere) Air molecules are pulled closer to the earth"s surface. The highest pressure occurs closer to sea level because of the increase in overlying air (cid:1849)(cid:1857) (cid:1872) = (cid:1865)(cid:1871)(cid:1871) (cid:1870)(cid:1874)(cid:1872) (cid:2870)=(cid:883)(cid:882)(cid:883)(cid:885)(cid:884)(cid:887)(cid:1840) (cid:883)(cid:882)(cid:885)(cid:885)(cid:891). (cid:885)(cid:1863) (cid:891). (cid:890)(cid:1865)/(cid:1871) (cid:1870)(cid:1857)(cid:1871)(cid:1871)(cid:1873)(cid:1870)(cid:1857)=(cid:1867)(cid:1870)(cid:1855)(cid:1857)/(cid:1870)(cid:1857)=(cid:883)(cid:882)(cid:883)(cid:885)(cid:884)(cid:887) (cid:1840)=(cid:883)(cid:882)(cid:883)(cid:885)(cid:884)(cid:887) =(cid:883)(cid:882)(cid:883). (cid:885)(cid:884)(cid:887) (cid:1863)=(cid:883)(cid:882)(cid:883)(cid:885). (cid:884)(cid:887) . With rising altitude, the greatest drop of air molecules/pressure occurs near the surface: air density (cid:1857)(cid:1866)(cid:1871)(cid:1872)= (cid:1839)(cid:1871)(cid:1871)/ (cid:1848)(cid:1867)(cid:1864)(cid:1873)(cid:1865)(cid:1857) (how much matter in a combined space) (cid:1840)(cid:1857)(cid:1870) (cid:1845)(cid:1857) (cid:1838)(cid:1857)(cid:1874)(cid:1857)(cid:1864)= (cid:883). (cid:884)(cid:1863)(cid:1865) (cid:2871)
