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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

The Earths Early Atmosphere (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'The Earths Early Atmosphere' from the broader topic Chemistry Of The Atmosphere. The test is geared towards the AQA exam board style syllabus.
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Which process is mainly responsible for the large increase in atmospheric oxygen about 2.5 billion years ago?
Which statement best describes the role of photosynthetic organisms in changing the early atmosphere?
Which process removed carbon dioxide from the atmosphere and helped form sedimentary carbonate rocks?
Which of the following best explains why Earth retained a dense atmosphere while smaller bodies lost theirs?
Which biological process directly uses carbon dioxide and produces oxygen?
How did early oceans help reduce atmospheric carbon dioxide concentrations?
Why is studying the composition of ancient rocks important for understanding Earth’s early atmosphere?
Which of the following explains how carbonate-shelled organisms contributed to lowering CO2 levels?
Why is nitrogen now one of the most abundant gases in Earth’s atmosphere?
Which of the following gases was NOT a major component of Earth’s early atmosphere soon after formation?
What is thought to have been a key trigger for the Great Oxygenation Event (when O2 accumulated in the atmosphere)?