Unit 8: Option B — Oceans and Coastal Margins
Topic 8.3: Managing coastal margins Questions
Practice 20 exam-style questions for IB Geography SL Topic 8.3. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1State3 marks
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The table shows the recorded seawater pH near a coral reef over four decades.
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Coastal conflicts are hard to settle mainly because…
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Most marine pollution starts on land and reaches the ocean via…
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One reason ocean pollution is hard to manage is that the ocean is…
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Plastic pollution concentrates along coastlines mainly because…
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Outline one reason why plastic pollution builds up along ocean coastlines, and develop your answer.
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Outline one environmental problem caused by the growth of aquaculture, and develop your answer.
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The table shows the main sources of plastic entering the ocean.
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Explain how nutrient pollution from the land can damage a coastal marine ecosystem.
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Explain how rising atmospheric carbon dioxide leads to ocean acidification.
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Explain why some ocean plastic ends up far out at sea rather than only on coastlines.
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Outline two strategies that can reduce the risk of flooding on a low-lying coast, and state how each works.
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Eutrophication is best described as…
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Suggest two strategies that could reduce the amount of plastic entering the ocean.
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Ocean acidification is caused by seawater absorbing…
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Managed retreat is best described as…
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Suggest two reasons why managed retreat is often a controversial way to manage an eroding coast.
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A sea wall in one place can harm a neighbouring coast because it…
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Which of these is a soft-engineering coastal defence?
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Why are mangroves valuable on a low-lying tropical coast?
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