Photochemical Smog (DP IB Environmental Systems & Societies (ESS): SL)

Exam Questions

42 mins10 questions
13 marks

List three primary pollutants from the combustion of fossil fuels.

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22 marks

Complete the following sentence:

Tropospheric ozone is an example of a secondary pollutant, formed when oxygen molecules react with oxygen atoms that are released from __________ dioxide in the presence of __________.

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32 marks

Thermal Inversions can contribute to the formation and persistence of smog in urban areas.

Explain what a thermal inversion is, in this context.

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42 marks

Briefly outline how catalytic converters can reduce urban air pollution.

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13 marks

Explain the processes through which the combustion of fossil fuels contributes to the formation of photochemical smog.

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24 marks

Outline four effects of tropospheric ozone and smog.

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3a4 marks

The graph below shows global tropospheric ozone levels between 1988 and 2023.

tropospheric-ozone

Suggest possible reasons for the overall trends in global tropospheric ozone levels shown by the graph.

3b
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2 marks

Use the figure in part (a) to calculate the average annual decrease in tropospheric ozone concentration (in parts per billion) between 1991 and 2010. Show your working.

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44 marks

List four possible air pollution management strategies that can be used to reduce tropospheric ozone and photochemical smog.

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17 marks

Explain how changes in the concentration of tropospheric ozone in the atmosphere might affect global biodiversity.

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29 marks

Evaluate pollution management strategies for reducing photochemical smog.

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