Unit 7: Option A — Freshwater: Drainage Basins
Topic 7.3: Water scarcity and water quality Questions
Practice 20 exam-style questions for IB Geography Topic 7.3. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1Outline2 marks
Eutrophication has occurred in a freshwater lake. Outline one environmental problem this causes and develop it briefly.
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On the Falkenmark scale, absolute water scarcity is below…
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Physical (absolute) water scarcity happens when…
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Explain one way that farming activity can lead to salinisation.
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The table shows the per-capita renewable water availability of five countries in 1990 and 2020 (m3 per person per year).
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The table compares an algal bloom (eutrophication) in a lake's southern bay in two years.
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2022
Outline one environmental impact of pumping too much water from an aquifer.
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Salinisation in irrigated dry regions happens mainly because…
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2025
Outline how relief can cause natural water scarcity in a region.
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2024
Explain how over-irrigation can cause salinization.
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2025
Explain two ways economic growth increases the pressure on lakes.
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2025
Explain two reasons why lakes are under growing human pressure, and how each harms the lake.
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2022
Outline one environmental impact of over-pumping a coastal aquifer.
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2022
Outline one way drought raises the costs of crop farming.
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2025
Using the table, identify the country whose water per person fell by 400 m³.
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2022
The table shows how rural households get water. State how many countries have more than 60% of rural households collecting water from outside the home.
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2025
Using the table, identify the country whose water per person fell by 1500 m³.
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2022
Using the table, state the country with the highest share of rural households collecting water from outside the home.
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2026
Using the table, identify the projected scarcity level of country Z.
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2022
Using the table, describe the difference in extreme drought between the north and the south of the country.
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