Secondary 3 Geography Practice Paper 5

Answer Key - Geography Secondary 3 Practice Paper (Version 5)

Section A: Map and Data Skills

Q1 (a) [3 marks] Description should note: (1) Higher temperatures in the center/CBD, (2) Lower temperatures in the periphery/green areas, (3) A gradient of temperature decreasing from center to edge. (b) [2 marks] Higher density of concrete/asphalt (1) which absorbs and re-radiates more heat (1).

Q2 (a) [1 mark] Tropical Rainforest Climate. (b) [3 marks] High temperatures lead to high rates of evaporation (1). This increases moisture in the air (1), which cools and condenses to form heavy precipitation (1).

Q3 (a) [2 marks] Strong positive correlation (1); as tourist arrivals increase, waste generation also increases (1). (b) [3 marks] Tourists consume packaged goods/single-use plastics (1). Local infrastructure may struggle to manage the volume of waste (1), leading to higher overall generation (1).

Q4 (a) [1 mark] Divergent Plate Boundary. (b) [3 marks] Plates move apart/separate (1). Magma rises from the mantle to fill the gap (1), cooling to form a mid-ocean ridge (1).

Q5 (a) [1 mark] (Based on typical data) Transport or Energy sector. (b) [2 marks] E.g., Transport: Transitioning to electric vehicles (1) to reduce CO2 emissions from combustion engines (1).

Section B: Structured Questions

Q6 (a) [2 marks] The emotional and subjective attachment/meaning a person associates with a specific place (1), shaped by experiences and memories (1). (b) [4 marks] Interaction involves shared stewardship/gardening (1). This fosters social bonds and a sense of community (1). The physical beauty and act of nurturing nature create positive emotional associations (1). This transforms a generic space into a meaningful "place" (1). (c) [6 marks] Environmental: Natural filtration of rainwater and increased biodiversity (2). Social: Creation of recreational spaces for mental well-being and community bonding (2). Synthesis: It balances urban utility with ecological health, making the neighborhood more resilient (2).

Q7 (a) [4 marks] Generating Region: The area where tourists originate from (1), influenced by income and motivation (1). Destination Region: The area tourists visit (1), characterized by attractions and infrastructure (1). (b) [4 marks] Growth slows down (1). The destination is now well-known and has a stable number of visitors (1). Infrastructure is fully developed (1). The focus shifts from growth to maintaining the current market (1). (c) [6 marks] Effectiveness: Directly targets the poor by employing them in tourism (2). Ensures money stays in the local economy (reducing leakages) (2). Limitation: May be small-scale or dependent on external NGOs (1). Overall, it is effective if integrated with local ownership (1).

Q8 (a) [2 marks] Weather is the short-term state of the atmosphere (1). Climate is the long-term average of weather patterns over 30+ years (1). (b) [4 marks] Intense sun heats the ground (1). Air above the ground warms, becomes less dense, and rises (1). As it rises, it cools and condenses into cumulus clouds (1), leading to heavy rain/thunderstorms (1). (c) [6 marks] Natural: Volcanic eruptions release ash/aerosols that block sunlight, cooling the Earth (3). Human: Burning fossil fuels releases GHGs (CO2/Methane) which trap heat in the atmosphere (3).

Q9 (a) [3 marks] Crust (thin, rocky outer layer) (1), Mantle (semi-molten rock/plasticity) (1), Core (dense iron/nickel, divided into inner/outer) (1). (b) [4 marks] An oceanic plate subducts beneath another plate (1). The subducting plate melts as it sinks into the mantle (1). Magma rises through the overriding plate (1), erupting as a chain of volcanoes (1). (c) [5 marks] Hazard: Both are powerful, but magnitude 7.0 is stronger (1). Vulnerability: Developing countries often have poor building codes/unplanned housing (2). Capacity: Developed countries have better emergency services and early warning systems (2). Thus, higher vulnerability and lower capacity in the developing country lead to more deaths.

Section C: Integrated Application

Q10 (a) [4 marks] Erosion of coastal land/beaches (2). Flooding of low-lying areas/infrastructure during high tides (2). (b) [8 marks] Economic: Expanding ports/airports increases GDP and global connectivity (3). Environmental: This often requires land reclamation, destroying mangroves and seagrasses, which are carbon sinks and nurseries for fish (3). Trade-off: Singapore must balance economic survival with ecological commitments to remain a "City in Nature" (2). (c) [8 marks] Argument for Adaptation: Singapore is too small to significantly impact global GHG levels (mitigation) (3). Sea-level rise is an inevitable threat that requires immediate physical defenses like polders (3). Argument for Mitigation: Without global mitigation, adaptation will eventually become impossible/too expensive (1). Conclusion: Adaptation is more immediate and critical for survival, but both are necessary (1).