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6.3 Interpreting and interacting with earth systems

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Question 3

A geologist studies dated rocks from one region. The table shows four features in the rocks.

SampleAge in billions of yearsFeature in the rocks
K2.2The oldest rock in the region that formed on land and contains red iron oxide
L3.8Carbonate sediment that formed on the sea floor
M2.4The youngest banded iron layers in the region
N2.7The oldest banded iron layers in the region

Explain what sequence of changes to the Earth and its atmosphere is supported by this evidence.

[5]
Markscheme

6.3 Interpreting and interacting with earth systems Questions

  1. GCSE
  2. /Chemistry
  3. /6.3 Interpreting and interacting with earth systems

109 exam-style questions on OCR GCSE Chemistry 6.3 Interpreting and interacting with earth systems, covering 6.3.1 Formation and evolution of the atmosphere, 6.3.2 The greenhouse effect and climate change, 6.3.3 Sources and problems of atmospheric pollutants, and 6.3.4 Producing potable water. Each one has a worked solution and a mark scheme showing where the marks go.

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