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O Level Geography Resources Sustainability Quiz

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Questions

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O-Level Geography Quiz - Resources Sustainability

Name: __________________________
Class: __________________________
Date: __________________________
Score: _______ / 50

Duration: 45 Minutes
Total Marks: 50
Instructions:

  1. Answer all questions.
  2. Write your answers in the spaces provided.
  3. Marks for each question or part question are shown in brackets [ ].
  4. Refer to the syllabus topic: Cluster 1.2: Sustainable Development and Cluster 5: Singapore (Resource Scarcity).

Section A: Concepts of Sustainable Development (Questions 1–5)

1. Define the term sustainable development. [2]

2. State the three pillars (dimensions) of sustainable development. [3]
(a) __________________________
(b) __________________________
(c) __________________________

3. Distinguish between an anthropocentric and an ecocentric view of the environment. [4]
Anthropocentric:

Ecocentric:

4. Explain why trade-offs are often necessary when making decisions about resource use. [3]

5. Identify one global initiative aimed at promoting sustainable development. [1]

Section B: Resource Management & Food Security (Questions 6–10)

Study Figure 1, which shows the change in global cereal production and population growth from 1990 to 2020.
(Note: Assume Figure 1 shows cereal production rising steadily but population rising at a slightly faster rate in recent years, narrowing the gap.)

6. Describe the trend in global cereal production shown in Figure 1. [2]

7. With reference to Figure 1, explain why food security remains a challenge despite increased production. [3]

8. Explain how agricultural intensification can lead to eutrophication in nearby water bodies. [4]

9. Suggest two strategies to make food production more sustainable. [4]
(a) _____________________________________________________________________

(b) _____________________________________________________________________

10. 'Technology is the most important factor in ensuring future food security.'
Do you agree? Give one reason for your answer. [2]

Section C: Water Resources & Energy (Questions 11–15)

11. Define the term water stress. [2]

12. Explain how desalination can contribute to a country’s water security. [3]

13. State one environmental disadvantage of large-scale hydroelectric power (HEP). [1]

14. Compare solar energy and coal in terms of their sustainability. [4]
Solar Energy:

Coal:

15. Why might some countries be reluctant to transition from fossil fuels to renewable energy sources? [3]

Section D: Singapore Context & Evaluation (Questions 16–20)

16. Identify two natural resources that are scarce in Singapore. [2]
(a) __________________________
(b) __________________________

17. Explain how Singapore’s NEWater scheme contributes to sustainable water management. [3]

18. 'Land reclamation is a sustainable solution to Singapore’s land scarcity.'
Evaluate this statement. [4]

19. Explain one way in which individual actions can contribute to resource sustainability in urban areas. [3]

20. 'Economic growth and environmental protection are mutually exclusive.'
To what extent do you agree with this statement? Support your answer with relevant examples. [9]

Answers

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O-Level Geography Quiz - Resources Sustainability (Answer Key)

Total Marks: 50

Section A: Concepts of Sustainable Development

1. Define the term sustainable development. [2]

  • Marking Scheme:
    • 1 mark for defining development that meets present needs.
    • 1 mark for mentioning not compromising the ability of future generations to meet their needs.
  • Answer: Development that meets the needs of the present generation [1] without compromising the ability of future generations to meet their own needs [1].

2. State the three pillars (dimensions) of sustainable development. [3]

  • Answer:
    (a) Economic [1]
    (b) Social [1]
    (c) Environmental [1]
    (Order does not matter)

3. Distinguish between an anthropocentric and an ecocentric view of the environment. [4]

  • Marking Scheme:
    • 2 marks for Anthropocentric explanation.
    • 2 marks for Ecocentric explanation.
  • Answer:
    • Anthropocentric: Views humans as the central or most significant species; nature exists primarily to serve human needs and economic growth [2].
    • Ecocentric: Views nature as having intrinsic value independent of human use; emphasizes protecting ecosystems and biodiversity for their own sake [2].

4. Explain why trade-offs are often necessary when making decisions about resource use. [3]

  • Marking Scheme:
    • 1 mark for identifying conflicting goals.
    • 2 marks for explanation/example.
  • Answer: Resources are limited, and different stakeholders have competing priorities (e.g., economic profit vs. environmental conservation) [1]. Achieving one goal often requires sacrificing another (e.g., building a dam provides energy but destroys habitats) [2]. Therefore, decisions involve balancing these competing needs [1].

5. Identify one global initiative aimed at promoting sustainable development. [1]

  • Answer: Any valid example, e.g., The United Nations Sustainable Development Goals (SDGs) [1], The Paris Agreement [1], or Agenda 21 [1].

Section B: Resource Management & Food Security

6. Describe the trend in global cereal production shown in Figure 1. [2]

  • Marking Scheme:
    • 1 mark for general trend (increase).
    • 1 mark for specific detail (steady/consistent).
  • Answer: Global cereal production has increased steadily/consistently from 1990 to 2020 [1]. It has risen from [X] million tonnes to [Y] million tonnes (data reference) [1].

7. With reference to Figure 1, explain why food security remains a challenge despite increased production. [3]

  • Marking Scheme:
    • 1 mark for referencing population growth.
    • 2 marks for explanation of the gap/distribution.
  • Answer: Although production has increased, population growth has also risen, often at a similar or faster rate in recent years [1]. This means the per capita availability may not be increasing significantly [1]. Additionally, food distribution is uneven, so increased global production does not guarantee access for all regions [1].

8. Explain how agricultural intensification can lead to eutrophication in nearby water bodies. [4]

  • Marking Scheme:
    • 1 mark for fertilizer use.
    • 1 mark for runoff/leaching.
    • 1 mark for algal bloom.
    • 1 mark for oxygen depletion/death of aquatic life.
  • Answer: Intensification involves heavy use of chemical fertilizers containing nitrates and phosphates [1]. Rain washes these excess nutrients into nearby rivers/lakes (runoff) [1]. This causes rapid growth of algae (algal blooms) which block sunlight [1]. When algae die, bacteria decompose them, using up dissolved oxygen, leading to the death of fish and other aquatic life [1].

9. Suggest two strategies to make food production more sustainable. [4]

  • Marking Scheme:
    • 2 marks per strategy (1 for identification, 1 for explanation).
  • Answer:
    (a) Organic Farming: Reduces chemical pollution and soil degradation by avoiding synthetic pesticides/fertilizers [2].
    (b) Precision Agriculture: Uses technology to apply water and fertilizers only where needed, reducing waste and environmental impact [2].
    (Other valid answers: Crop rotation, agroforestry, reducing food waste.)

10. 'Technology is the most important factor in ensuring future food security.' Do you agree? Give one reason for your answer. [2]

  • Marking Scheme:
    • 1 mark for stance.
    • 1 mark for valid reason.
  • Answer:
    • Agree: Technology (e.g., GMOs, vertical farming) increases yield per hectare, allowing more food to be produced on limited land [2].
    • Disagree: Distribution and political stability are more important; technology cannot help if conflict prevents food from reaching people [2].
      (Accept either side if reasoned.)

Section C: Water Resources & Energy

11. Define the term water stress. [2]

  • Marking Scheme:
    • 1 mark for demand exceeding supply.
    • 1 mark for quality/availability constraint.
  • Answer: Water stress occurs when the demand for water exceeds the available amount during a certain period [1] or when poor quality restricts its use [1].

12. Explain how desalination can contribute to a country’s water security. [3]

  • Marking Scheme:
    • 1 mark for process (removing salt).
    • 1 mark for source (sea/ocean).
    • 1 mark for reliability/independence from rainfall.
  • Answer: Desalination removes salt from seawater to produce potable water [1]. It provides a drought-proof source of water [1], reducing reliance on unpredictable rainfall or imported water, thus enhancing security [1].

13. State one environmental disadvantage of large-scale hydroelectric power (HEP). [1]

  • Answer: Any one:
    • Flooding of large areas of land/habitats [1].
    • Disruption of fish migration routes [1].
    • Methane emissions from decaying vegetation in reservoirs [1].

14. Compare solar energy and coal in terms of their sustainability. [4]

  • Marking Scheme:
    • 2 marks for Solar (Renewable/Clean).
    • 2 marks for Coal (Non-renewable/Polluting).
  • Answer:
    • Solar Energy: It is a renewable resource that does not emit greenhouse gases during operation, making it environmentally sustainable [2].
    • Coal: It is a finite, non-renewable fossil fuel that releases significant CO2 and pollutants when burned, contributing to climate change and making it unsustainable [2].

15. Why might some countries be reluctant to transition from fossil fuels to renewable energy sources? [3]

  • Marking Scheme:
    • 1 mark for economic cost.
    • 1 mark for infrastructure/jobs.
    • 1 mark for reliability/intermittency.
  • Answer: High initial costs of building renewable infrastructure [1]. Fear of job losses in traditional fossil fuel industries [1]. Concerns about the intermittency of renewables (e.g., sun doesn't always shine) affecting energy reliability [1].

Section D: Singapore Context & Evaluation

16. Identify two natural resources that are scarce in Singapore. [2]

  • Answer:
    (a) Land [1]
    (b) Fresh Water [1]
    (Also accept: Natural energy sources, raw materials.)

17. Explain how Singapore’s NEWater scheme contributes to sustainable water management. [3]

  • Marking Scheme:
    • 1 mark for recycling used water.
    • 1 mark for reducing import dependence.
    • 1 mark for sustainability/closed loop.
  • Answer: NEWater recycles treated used water into high-grade clean water [1]. This reduces Singapore’s reliance on imported water from Malaysia [1]. It creates a sustainable, local water source that is resilient to climate change and drought [1].

18. 'Land reclamation is a sustainable solution to Singapore’s land scarcity.' Evaluate this statement. [4]

  • Marking Scheme:
    • 2 marks for benefits (economic/space).
    • 2 marks for drawbacks (environmental/cost).
    • Note: Evaluation requires balance.
  • Answer:
    • Agree: It creates valuable land for housing, industry, and ports, supporting economic growth and accommodating population [2].
    • Disagree: It is environmentally damaging, destroying marine habitats and coral reefs, and is very expensive [2].
    • Conclusion: While it solves immediate space constraints, it must be managed carefully to mitigate environmental impacts, so it is partially sustainable [implied in balance].

19. Explain one way in which individual actions can contribute to resource sustainability in urban areas. [3]

  • Marking Scheme:
    • 1 mark for action.
    • 2 marks for explanation of impact.
  • Answer:
    • Action: Practicing the 3Rs (Reduce, Reuse, Recycle) [1].
    • Explanation: Reducing waste decreases the demand for raw materials and energy needed for production [1]. It also reduces the volume of waste sent to landfills/incineration, lowering pollution [1].

20. 'Economic growth and environmental protection are mutually exclusive.' To what extent do you agree? [9]

  • Marking Scheme (AO3 Judgement):

    • Level 3 (7-9 marks): Balanced argument with clear evaluation. Discusses both sides with specific examples. Reaches a justified conclusion.
    • Level 2 (4-6 marks): Describes both sides but lacks depth or specific examples. Conclusion is weak.
    • Level 1 (1-3 marks): One-sided argument or vague statements. No clear conclusion.

  • Indicative Content:

    • Agree (Mutually Exclusive): Traditional industrialization often leads to pollution, deforestation, and resource depletion. Developing countries may prioritize jobs and GDP over environmental regulations (e.g., rapid urbanization in some LEDCs causing smog). Strict environmental laws can increase costs for businesses, potentially slowing growth.
    • Disagree (Not Mutually Exclusive): Sustainable development shows they can coexist. Green technologies (solar, EVs) create new industries and jobs. Eco-tourism generates revenue while preserving nature. Singapore’s "City in a Garden" concept boosts property values and tourism while maintaining green spaces. Efficient resource use reduces costs long-term.
    • Conclusion: They are not mutually exclusive if sustainable practices are adopted. While short-term trade-offs exist, long-term economic stability depends on environmental health. Governments must regulate to ensure growth does not destroy the natural capital it relies on.