9. Chemistry Of The Atmosphere Flashcards
What percentage of nitrogen is in the atmosphere today?
78%
What percentage of oxygen is in the atmosphere today?
21%
What percentage of carbon dioxide is in the atmosphere today?
0.03%
What percentage of noble gases are in the atmosphere today?
1%
What was phase 1 of evolution of the atmosphere?
Volcanoes gave out gases
What was phase 2 of evolution of the atmosphere?
Green plants and algae absorbed carbon dioxide
What was phase 3 of evolution of the atmosphere?
Green plants and algae produced oxygen
What is the greenhouse effect?
UV radiation warms the earth surface -> earth emits infrared -> some gets trapped in earths atmosphere and some is remitted
What has a carbon footprint?
Pretty much everything
How to reduce carbon footprint?
Walk, eat less meat, use less electricity
What is the evidence for global warming?
- CO2
- Methane -> 2nd most abundant - produced by cows and sheep
- Nitrous oxide -> 3rd and produced by soil which is used more containing bacteria
What percentage does carbon dioxide contribute to global warming?
60%
What percentage does methane contribute to global warming?
16%
What percentage does nitrous oxide contribute to global warming?
4%
What percentage do other synthetic gases contribute to global warming?
10%