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08-10 08_10.JPG |
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| Title: | AIR PRESSURE |
| Caption: | Both the (a) density and (b) pressure of Earth's atmosphere decrease with increasing altitude. The blue dots in (a) represent gas molecules in the air, and the curving yellow line in (b) is atmospheric pressure shown in millibars. One atmosphere of pressure equals 1 bar or 1000 millibars. (After Christopherson, R. W. 2006. Geosystems; An introduction to physical geography, 6th ed. Upper Saddle River, NJ: Pearson Prentice Hall) |
| Keywords: | atmosphere, air pressures, atmospheric pressures |