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- 1. Multiple Choice
What is the definition for a carbon sink?
the removal of carbon from the lithosphere
the removal of carbon from the atmosphere
the removal of carbon from the hydrosphere
the removal of carbon from biosphere
- 2. Multiple Choice
Which is not one of the Earth systems?
Biosphere
Lithosphere
Hydrosphere
Outersphere
- 3. Multiple Choice
What is a flux?
movement of air
movement of water
movement of carbon
movement of 2 of the above
- 4. Multiple Choice
Photosynthesis is a process which moves carbon, this is an example of?
carbon flux
carbon reservoir
- 5. Multiple ChoiceWhen humans burn fossil fuels, most of the carbon quickly enters the as carbon dioxide.WaterAtmosphereSunAir
- 6. Multiple ChoiceWhich one of these does not add CO2 to the atmosphere?cooking with gasplanting treesburning woodriding in a bus
- 7. Multiple ChoiceCombustion is another word for _______________.a traina busa dogburning
- 8. Multiple ChoiceWhat does not produce carbon dioxide?PhotosynthesisBurning Fossil FuelsAnimal respirationPlants decaying
- 9. Multiple ChoiceHow do living organisms return carbon to the atmosphere in the carbon cycle?respiration and photosynthesisdecomposition and respiration
- 10. Multiple Choice
How does the carbon in grass become part of a lion?The lion eats the grassCarbon from grass doesn't end up in a lion.The carbon ends up in the lion's food chain.The lion breathes in carbon given out by the plant - 11. Multiple ChoiceAll of the carbon in existence is continually recycled in the carbon cycleTrueFalse
- 12. Multiple ChoiceWhich of the following removes carbon from the atmosphere?CombustionRespirationPhotosynthesisDeath
- 13. Multiple ChoiceCarbon can be found in...The atmosphereSoilFossil fuelsAll of the above
- 14. Multiple Choice
What are fossil fuels made from?
Plants and animals that are buried underground for millions of years.
They absorb it from the atmosphere.
Water
Wind
- 15. Multiple Choice
Are bacteria that produce methane gas.
Halophilic
Methanogenic
Thermophilic
- 16. Multiple Choice
How is data on concentration of atmospheric CO2 and methane collected?
satellites from space and direct measurements from earth
satellites from space
direct measurements from earth
none of the above
- 17. Multiple Choice
What favours the production of peat?
I. Presence of organic matter
II. Anaerobic conditions
III. Acidic conditions
I and II only
I and III only
II and III only
I, II and III
- 18. Multiple Choice
Methanogens produce methane gas. What is this gas converted to in the atmosphere?
Carbon dioxide and oxygen
Ethanol and carbon dioxide
Carbon monoxide and ozone
Carbon dioxide and water
- 19. Multiple Choice
How is peat formed?
From methanogenic archaeans under anaerobic and acidic conditions in deep sea vents
From partially decomposed organic matter under anaerobic and acidic conditions in waterlogged soils
From porous limestone under high pressure, aerobic and alkaline conditions in ocean beds
From bituminous coal under high pressure, anaerobic and acidic conditions below ground
- 20. Multiple Choice
Why does the amount of CO2 fall between April and August?
Seasonal increase in the rate of photosynthesis in northern hemisphere forests
Seasonal decrease in the rate of photosynthesis in northern hemisphere forests
Seasonal decrease in the rate of fossil fuel consumption
Seasonal increase in the amount of CO2 taken up by the oceans
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