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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 human action most directly reduces CO2 removal by natural long-term sinks?
Which balanced equation shows how plants remove carbon dioxide from the atmosphere during photosynthesis?
Which marine organisms contributed to lowering atmospheric CO2 by forming shells of calcium carbonate?
Which gas concentration increased as a direct consequence of the processes that decreased CO2 in Earth’s atmosphere?
Which of these statements correctly links ocean chemistry and long-term CO2 storage?
Which is a direct chemical consequence when CO2 dissolves into seawater and forms carbonic acid?
Which of the following best explains how the burial of organic carbon reduces atmospheric CO2 over geological time?
Which geological process stores atmospheric carbon dioxide as solid rock and so reduced CO2 levels over long time scales?
Which of the following best describes why limestone formation is considered a long-term carbon sink?
Which best describes why much of the ancient atmospheric CO2 became locked up as carbonates rather than staying as gas?
Which of these is evidence from rocks that supports a past decrease in atmospheric CO2?