Overview of the universe, our solar system and the ... - APRSAF
Overview of the universe, our solar system and the ... - APRSAF
Overview of the universe, our solar system and the ... - APRSAF
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2, Fragile Earth !!!related to <strong>the</strong><br />
lesson <strong>of</strong> Environment protection<br />
1.Thickness <strong>of</strong> <strong>the</strong> air ; only 10km<br />
10 19 particles /cm3(10,000,000,000,000,000 ,000,000,000)<br />
1/100 atmospheric pressure at <strong>the</strong> height <strong>of</strong> 30km,<br />
if you go every 15km,<strong>the</strong> pressure becomes 1/10<br />
2.Thickness <strong>of</strong> Ozone; about 3 mm<br />
when compressed to 1 atom.pressure. 1/10 5 <strong>of</strong> oxygen <strong>and</strong><br />
nitrogen at <strong>the</strong> height <strong>of</strong> 30km<br />
3.Depth <strong>of</strong> <strong>the</strong> sea ;about 3km<br />
Note most <strong>of</strong> <strong>the</strong> water is sea water<br />
Radius <strong>of</strong> <strong>the</strong> earth 6370 km ( What is <strong>the</strong> circle<br />
<strong>of</strong> <strong>the</strong> Earth Km)<br />
Equal to thin red skin <strong>of</strong> apple <strong>of</strong> diameter <strong>of</strong> 10cm, not <strong>of</strong> orange
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