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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

How Carbon Dioxide Decreased (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'How Carbon Dioxide Decreased' from the broader topic Chemistry Of The Atmosphere. The test is geared towards the AQA exam board style syllabus.
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Which geological process stores atmospheric carbon dioxide as solid rock and so reduced CO2 levels over long time scales?
Which marine organisms contributed to lowering atmospheric CO2 by forming shells of calcium carbonate?
Which balanced equation shows how plants remove carbon dioxide from the atmosphere during photosynthesis?
Which environmental change would increase the ocean’s capacity to absorb and store CO2 (all else equal)?
Which observation would best indicate that less CO2 is being added to the atmosphere than removed by natural sinks over many years?
Which process does NOT help decrease atmospheric CO2 over long timescales?
Which best describes why much of the ancient atmospheric CO2 became locked up as carbonates rather than staying as gas?
Which effect on seawater is caused by increased atmospheric CO2 dissolving into the oceans?
Which of the following is a modern engineered technique that aims to mimic geological CO2 removal (a long-term decrease pathway)?
Which gas concentration increased as a direct consequence of the processes that decreased CO2 in Earth’s atmosphere?
Which biological process would most rapidly remove CO2 from the air on a local, seasonal timescale (but not necessarily long term)?