Atmosphere Intro
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The Atmosphere
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Physical
Stratosphere
15 km
50 km
15C
-70C
15C
Troposphere
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Chemical what are the main gases ?
Nitrogen
Oxygen
Argon
Carbon Dioxide
78 %
21%
1%
350 ppm
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What are ppm?
ppm = parts per million.
so 350 ppm
means 350/1000000
= 3.5 10 - 4
= 3.5
10- 2
%
on your calculator
= 0.035 %
times 100
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Now your turn !
What is the % neon in air ? 18 ppm
How many ppm is argon ? 1%
0.0018 %
10000 ppm
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Deaths from melanoma in USA
Latitude / N30 40 50
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What frequencies of radiation are the most dangerous ?
Why ?
