A Level H1 Geography Physical Geography Quiz

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A-Level Geography H1 Quiz - Physical Geography

Name: ____________________
Class: ____________________
Date: ____________________
Score: ________ / 100

Duration: 90 Minutes
Total Marks: 100

Instructions:

• Answer all questions.
• For structured questions, write your answers in the spaces provided.
• Use a black or blue pen.
• Diagrams may be used to support your explanations where appropriate.

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Section A: Climate Systems and Tropical Cyclones (Questions 1-7)

1. Define the term 'albedo' and explain its role in the process of Arctic Amplification. (4 marks)
   
   
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2. Describe the necessary atmospheric conditions required for the formation of a tropical cyclone. (6 marks)
   
   
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3. Explain why tropical cyclones typically dissipate rapidly after making landfall. (4 marks)
   
   
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4. With reference to the Coriolis force, explain why tropical cyclones do not form between 0° and 5° North or South of the equator. (5 marks)
   
   
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5. Compare the impacts of a tropical cyclone on a High-Income Country (HIC) versus a Low-Income Country (LIC). (8 marks)
   
   
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6. Explain how an increase in sea surface temperatures (SST) can lead to an increase in the intensity of tropical cyclones. (6 marks)
   
   
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7. Discuss the extent to which the timing of a tropical cyclone's landfall influences the magnitude of its socio-economic impacts. (8 marks)
   
   
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Section B: Hydrological Processes and Flooding (Questions 8-14)

8. Distinguish between 'infiltration' and 'percolation' within a drainage basin. (4 marks)
   
   
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9. Explain how the presence of dense vegetation in a drainage basin affects the lag time of a storm hydrograph. (6 marks)
   
   
   
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10. Describe how a 'flash flood' differs from a 'river flood' in terms of cause and temporal characteristics. (5 marks)
    
    
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11. Explain the relationship between soil saturation and the likelihood of surface runoff during a heavy rainfall event. (6 marks)
    
    
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12. Analyze how the steepness of a basin's topography influences the peak discharge of a river. (6 marks)
    
    
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13. Explain two ways in which human activities, such as deforestation, can modify the hydrological cycle of a drainage basin. (8 marks)
    
    
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14. Evaluate the effectiveness of 'hard engineering' strategies (e.g., dams, levees) compared to 'soft engineering' strategies (e.g., afforestation, zoning) in managing flood risk. (10 marks)
    
    
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Section C: Climate Change and Environmental Interaction (Questions 15-20)

15. Describe two pieces of evidence that indicate the Earth's climate is currently changing. (4 marks)
    
    
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16. Explain the process of the 'enhanced greenhouse effect' and identify the primary anthropogenic gases responsible. (6 marks)
    
    
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17. Explain how climate change may lead to an increase in the frequency of extreme weather events globally. (6 marks)
    
    
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18. Discuss the challenges faced by Small Island Developing States (SIDS) in adapting to rising sea levels. (8 marks)
    
    
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19. Explain the difference between 'mitigation' and 'adaptation' strategies in the context of climate change, providing one example for each. (8 marks)
    
    
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20. To what extent is the mitigation of global climate change dependent on the collective effort of nations rather than individual technological breakthroughs? (12 marks)
    
    
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Answer Key - A-Level Geography H1 Quiz (Physical Geography)

Section A: Climate Systems and Tropical Cyclones

1. Albedo (4m): Definition: The proportion of solar radiation reflected by a surface. Role: Ice has high albedo; as it melts, darker ocean/land (low albedo) absorbs more heat, leading to further melting (positive feedback loop).
2. Conditions (6m): SST $\ge 26.5^\circ\text{C}$ (energy source), atmospheric instability (rising air), high humidity/moisture, low wind shear (to maintain structure), and Coriolis force (for rotation).
3. Dissipation (4m): Loss of energy source (warm ocean water) and increased surface friction from land features, which disrupts the cyclone's wind structure.
4. Coriolis Force (5m): The Coriolis effect is zero at the equator. Without this force, the air cannot be deflected to create the rotational vortex necessary for a cyclone.
5. HIC vs LIC (8m): HICs: Higher economic loss (infrastructure) but lower death tolls due to better early warning and building codes. LICs: Higher death tolls due to poor housing, lack of evacuation plans, and higher vulnerability.
6. SST and Intensity (6m): Higher SST increases evaporation rates $\rightarrow$ more latent heat released during condensation $\rightarrow$ stronger updrafts and lower central pressure $\rightarrow$ higher wind speeds.
7. Timing (8m): Timing (e.g., night vs day, or during a festival/holiday) affects evacuation efficiency and the number of people exposed. Seasonal timing (e.g., during harvest) affects economic recovery.

Section B: Hydrological Processes and Flooding

8. Infiltration vs Percolation (4m): Infiltration is the downward entry of water from the surface into the soil. Percolation is the deeper movement of water through the soil and rock layers.
9. Vegetation and Lag Time (6m): Interception by canopy $\rightarrow$ slower delivery to ground $\rightarrow$ increased infiltration $\rightarrow$ slower throughflow $\rightarrow$ increases lag time (flattens hydrograph).
10. Flash vs River Flood (5m): Flash floods: Rapid onset, high intensity, often caused by thunderstorms or urban surfaces. River floods: Slower onset, larger scale, caused by prolonged rainfall or snowmelt.
11. Soil Saturation (6m): When soil pores are full (saturated), infiltration capacity drops to zero. All subsequent rainfall becomes surface runoff (Horton overland flow), increasing flood risk.
12. Topography (6m): Steeper slopes $\rightarrow$ gravity accelerates water movement $\rightarrow$ less time for infiltration $\rightarrow$ faster delivery to channel $\rightarrow$ higher and sharper peak discharge.
13. Human Activities (8m): Deforestation: Removes interception and root uptake $\rightarrow$ increases runoff. Urbanization: Replaces permeable soil with impermeable concrete $\rightarrow$ increases surface runoff.
14. Hard vs Soft Engineering (10m): Hard: Immediate, high protection, but expensive and can disrupt downstream flow. Soft: Sustainable, cheaper, improves biodiversity, but takes longer to implement and may not stop extreme events.

Section C: Climate Change and Environmental Interaction

15. Evidence (4m): (Any two) Rising global mean temperatures, retreating glaciers/ice sheets, rising sea levels, or shifts in flowering seasons (phenology).
16. Enhanced Greenhouse Effect (6m): GHGs (CO2, CH4, N2O) trap outgoing long-wave radiation in the atmosphere, increasing the heat retained. Primary gases: Carbon dioxide (fossil fuels), Methane (agriculture/landfills).
17. Extreme Weather (6m): Warming oceans provide more energy for cyclones; altered jet streams cause prolonged heatwaves or cold snaps; increased evaporation leads to more intense precipitation.
18. SIDS Challenges (8m): Limited land area for retreat, high economic dependence on tourism/fishing (both threatened), lack of financial resources for massive sea walls, saltwater intrusion into freshwater lenses.
19. Mitigation vs Adaptation (8m): Mitigation: Reducing causes (e.g., switching to solar power). Adaptation: Adjusting to effects (e.g., building houses on stilts).
20. Collective vs Tech (12m): Argument for Collective: GHGs are global pollutants; one country's effort is negated by another's emissions (Paris Agreement). Argument for Tech: Breakthroughs in carbon capture or fusion could solve the problem regardless of policy. Conclusion: Tech provides the tools, but collective policy provides the scale for implementation.