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AOS Practice Questions With Complete Solutions Latest Update
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AOS Practice Questions With Complete Solutions Latest Update
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AOS Practice Questions With Complete SolutionsLatest Update
Q: If CO2 emissions are leveling off, should the atmospheric CO2 concentration stabilize? Yes or No - correct answers No,
because although our emission rates are stabilizing, we are still contributing an increase of CO2 into the atmosphere.
We can stabilize our rate of increase but we will be a stable amount in every year.
Why is the annual minimum CO2 concentration in the atmosphere reached in October each year? - correct answers
Because respiration of plants becomes stronger than photosynthesis in the northern hemisphere at that time
Think of it as the build up before the transition to photosynthesis, the peak of all the CO2 being absorbed in plants.
Are global carbon sinks balanced? - correct answers It always has to be balanced
*where they go is another story
Which sink takes up the most CO2 - correct answers the atmosphere at 45%
Name the carbon sinks and their percentages - correct answers Atmosphere: 45% (4.5 GtC)
Ocean: 25% (2.6 GtC)
Land biosphere 30% (3.1 GtC)
All adds up to 10.3 GtC
Name the two types of carbon uptake by the ocean - correct answers 1.physical/solubility pump
2. biological pump
, Describe the physical/solubility pump - correct answers CO2 dissolves in sea water, then hydrated to form carbonic acid,
then reacts to carbonate ions, ultimately making H+ (which is acidic)
results in ocean acidification.
What's significant about the Dave Keeling graph? - correct answers Showed human-induced increase in atmospheric
CO2 concentration.
*We are permanently at 400 ppm
*pre-industrial = 280 ppm
We are expected to go up 2 degrees Celsius with the doubling of CO2
Main types of fossil fuels - correct answers 1. Oil
2. Coal
3. Natural Gas (methane)
Major gases in our atmosphere - correct answers Nitrogen - 78%
Oxygen - 21%
Argon - 1%
GREENHOUSE GASES
Water Vapor - 0-4%
Carbon Dioxide - 0.04%
Why are water vapor and carbon dioxide greenhouse gases? - correct answers they both interact with terrestrial
radiation.
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