Unit 7: Option A — Freshwater: Drainage Basins
Topic 7.2: Flooding and flood mitigation Questions
Practice 15 exam-style questions for IB Geography SL Topic 7.2. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1Analyse4 marks
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The table compares four flood-mitigation schemes proposed for one river basin.
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Unlock Question2identify1 mark
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A key advantage of soft engineering over hard engineering is that it is…
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Unlock Question3identify1 mark
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Which of these is a hard-engineering flood defence?
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Unlock Question4Explain4 marks
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Explain how building a dam and reservoir upstream can reduce flood risk downstream.
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Unlock Question5Outline4 marks
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Outline two soft-engineering measures that can be used to reduce flood risk, and state how each works.
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Unlock Question6Describe4 marks
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The table shows how often a town flooded in the decades before and after a flood scheme was built.
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Unlock Question7Explain2 marks
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For the same basin, identify a different channel modification and explain how it can help to mitigate flooding.
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Unlock Question8Explain2 marks
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For a small drainage basin, identify one channel modification and explain how it can raise the risk of flooding.
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Unlock Question9identify1 mark
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Building on a floodplain raises flood risk mainly because it…
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A river flood occurs when discharge rises above the…
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Explain two human actions in a drainage basin that can increase the risk of flooding.
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Unlock Question12identify1 mark
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Straightening a river channel tends to…
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Unlock Question13Evaluate10 marks
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Evaluate the effectiveness of two or more different approaches to flood mitigation.
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Unlock Question14To what extent10 marks
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To what extent do human factors outweigh physical factors in increasing the risk of river flooding in different places?
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Unlock Question15Examine10 marks
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Examine how far it is becoming more difficult to forecast river floods.
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