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Interpreting and interacting with earth systems

Interpreting and interacting with earth systems

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Question 25

The following statements describe a widely-accepted scientific theory of how the Earth's atmosphere evolved from its early formation to the present day.

The statements are not in the correct order:

  1. Carbon dioxide ( CO2\text{CO}_2CO2​ ) levels in the atmosphere decrease significantly as the gas dissolves in the oceans.
  2. Water vapour condenses to form the oceans.
  3. Photosynthetic algae and plants evolve, consuming CO2\text{CO}_2CO2​ and releasing oxygen ( O2\text{O}_2O2​ ).
  4. The atmosphere reaches a stable composition maintained by major biogeochemical cycles.
  5. Intense volcanic activity releases large amounts of CO2\text{CO}_2CO2​ , water vapour, and nitrogen.
  6. O2\text{O}_2O2​ levels rise in the atmosphere, leading to the formation of the protective ozone layer ( O3\text{O}_3O3​ ).

What is the correct major chronological order of these statements?

A

5,1,2,3,6,45, 1, 2, 3, 6, 45,1,2,3,6,4

B

5,2,1,3,6,45, 2, 1, 3, 6, 45,2,1,3,6,4

C

2,5,1,3,4,62, 5, 1, 3, 4, 62,5,1,3,4,6

D

2,1,5,3,6,42, 1, 5, 3, 6, 42,1,5,3,6,4

Markscheme

Interpreting and interacting with earth systems Questions

  1. GCSE
  2. /Chemistry
  3. /Interpreting and interacting with earth systems

32 exam-style questions on OCR GCSE Chemistry Interpreting and interacting with earth systems. Each one has a worked solution and a mark scheme showing where the marks go.

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