chemistry of atmposhere Flashcards
1
Q
what was the earths early atmosphere made of?
A
mostly carbon dioxide
2
Q
what did volcanos give out?
A
- nitrogen
- water vapour
- small amount of methane/ ammonia
3
Q
what happened to the water vapour?
A
condensed into oceans
4
Q
what happened to the carbon dioxide?
A
- absorbed by green plants and algae carrying out photosynthesis
- some became locked up in rocks and fossil fuels
5
Q
what did green plants and algae release?
A
produced oxygen
6
Q
what is the atmosphere made up of currently?
A
- 80% nitrogen
* 20% oxygen
