C1: Chemicals in the Atmosphere

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  • Created by: nealw2012
  • Created on: 29-02-16 19:49
Definition of Air
The mixture of gases in the atmosphere
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Definition of Atmosphere
The layer of gases that surrounds the earth
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What is the composition of the atmosphere and what do these gases do?
78% Nitrogen; 21% Oxygen; 1% Argon; 0.04%Carbon Dioxide
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What are the 4 stages in the history of the atmosphere?
1. Temp above 100 degrees-volcanoes release O2 and H20. 2. Rains for 1st time=oceans created. 3. Bacteria in oceans photosythnesise and release 02 into atmosphere. 4. Now-lots of 02 and carbon is locked up in fossils
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How do we measure change in the atmosphere?
1. Iron Pyrate - only if no 02 2.
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Other cards in this set

Card 2

Front

Definition of Atmosphere

Back

The layer of gases that surrounds the earth

Card 3

Front

What is the composition of the atmosphere and what do these gases do?

Back

Preview of the front of card 3

Card 4

Front

What are the 4 stages in the history of the atmosphere?

Back

Preview of the front of card 4

Card 5

Front

How do we measure change in the atmosphere?

Back

Preview of the front of card 5

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