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๐ Earth Science
Earth's Atmosphere
Five layers of gas surrounding Earth โ protects life, drives weather and regulates temperature
France ๐ 1784 Earth Science
Key Facts
- 1
Layers: Troposphere (weather), Stratosphere (ozone layer), Mesosphere, Thermosphere, Exosphere
- 2
Composition: 78% Nโ, 21% Oโ, 0.93% Ar, 0.04% COโ โ COโ small but critical for greenhouse effect
- 3
Ozone layer (15โ35km) absorbs UV; CFC destruction led to Montreal Protocol 1987 โ ozone hole slowly healing
๐ฌ Did you know? Without the greenhouse effect, Earth's average temperature would be โ18ยฐC instead of +15ยฐC โ the natural greenhouse effect is essential for life
Quick Reference
Category
Earth Science
Country
๐ France
Year / Era
1784
About
Five layers of gas surrounding Earth โ protects life, drives weather and regulates temperature