Random (specifically C9) Flashcards
When volcanoes erupt what built up gasses are released?
Nitrogen (mainly)
What is earths early atmosphere most comparable with (planet wise) (2)?
Venus and Mars
Why are theory’s about earths early atmosphere hard to prove?
4.6 billion years ago means limited evidence
What did the release of nitrogen in the atmosphere increase the levels to?
About 80%
Why did oxygen levels increase from today’s early atmosphere?
Due to plants and algae forming which then produce oxygen by photosynthesis
Due to plants and algae forming which then produce oxygen by photosynthesis ,what increased?
Photosynthesis
What’s the symbol equation for photosynthesis?
6CO(2)+ 6H(2)O➡️C(6)H(12)O(6) +6O(2)
Word equation for photosynthesis?
Carbon dioxide+ water➡️light +oxygen
Why did levels such as Carbon dioxide decrease from early atmospheres ?
Absorbed for photosynthesis and dissolved into the oceans
What would happen to the Carbon once it dissolved into the ocean?
Became locked up in rocks and fossil fuels
(that formed as dead organisms were compressed)
An example of carbon being locked up: Coal, which is formed from compressed…?
Thick plant deposit
An example of carbon being locked up: Limestone, which is formed from compressed…?
Calcium carbonate deposits from marine skeletons
An example of carbon being locked up: Crude Oil and Natural Gas, which is formed from compressed…?
Plankton deposits
What is today’s persentage of Carbon dioxide and argon?
1%
What is today’s persentage of water vapour?
Varies but around 1%
What is today’s persentage of ammonia?
None
Why would water vapour decrease from early atmosphere?
Due to the earth cooling, causing water vapour to condense
In today’s atmosphere, what is the 20%?
Oxygen
In today’s atmosphere, what is the 80%?
Nitrogen
