Atmosphere by Trevor Millard https://padlet.com/tmillard1/abc Work by 10A1b en-us 2018-11-28 10:28:41 UTC 2019-06-20 07:39:35 UTC hello@padlet.com https://imgglb.padletcdn.com/v13/image?t=g_auto&url=https%3A%2F%2Fpadlet.net%2Ficons%2Fpng%2F1f602.png Amelia&Grace (separate) https://padlet.com/tmillard1/abc/wish/366329513 2019-06-07 11:17:17 UTC https://padlet.com/tmillard1/abc/wish/366329513 https://padlet.com/tmillard1/abc/wish/366329607
Altitude is height above sea level. The density of air decreases with height. There are two reasons: at higher altitudes, there is less air pushing down from above, and gravity is weaker farther from Earth's center. So at higher altitudes, air molecules can spread out more, and air density decreases (Figure below).5 Jan 2013
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