Interpreting and interacting with earth systems

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Question 11
Medium

This question is about Earth's greenhouse gases and climate.

The graph below shows how atmospheric methane concentration and global average temperature variation have changed between 1980 and 2020.

Line graph showing methane concentration (ppb) on the left vertical axis (range 1550 to 1900 ppb) and average global temperature variation in degrees Celsius on the right vertical axis (range -0.1 to 0.8 °C) from 1980 to 2020. The x-axis is 'Year'. The methane levels, indicated by solid diamond markers on a line, show a steady upward trend from about 1560 ppb to 1880 ppb, with a short plateau near 1775 ppb between 2000 and 2005. The temperature variation line, indicated by square markers, shows high annual fluctuations but has a clear upward trend from 0.1 °C in 1980 to approximately 0.7 °C in 2020, with a peak of about 0.75 °C in 2016.

a.

Evaluate the information shown in the graph. To what extent does the graph support a link between atmospheric methane levels and global warming?

[2]
b.

Describe and explain how the greenhouse effect maintains the temperature of the Earth.

[3]
c.

State one human activity that can cause an increase in atmospheric methane levels.

[1]
d.

State two environmental effects of an enhanced greenhouse effect.

[2]

Interpreting and interacting with earth systems Questions

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