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A Level H1 Geography Fieldwork Quiz
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Questions
A-Level Geography H1 Quiz - Fieldwork
Name: __________________________
Class: __________________________
Date: __________________________
Score: _______ / 40
Duration: 45 Minutes
Total Marks: 40
Instructions:
- Answer all questions.
- This quiz focuses on Fieldwork Concepts, including research design, data collection methods, analysis techniques, and evaluation of investigations.
- Refer to the provided resources where applicable.
- Marks are indicated in brackets [ ] at the end of each question or part.
Section A: Research Design and Methodology (10 Marks)
1. A group of students is investigating the variation in infiltration rates across two different land-use zones in Singapore: a dense urban area (Orchard Road) and a vegetated park area (Bukit Timah Nature Reserve).
State one appropriate hypothesis for this investigation.
[1]
2. Explain why systematic sampling might be more appropriate than random sampling for this specific investigation along a transect from the city centre to the nature reserve.
[2]
3. The students plan to use a double-ring infiltrometer.
Identify two controlled variables they must maintain to ensure the reliability of their data when comparing the two sites.
[2]
4. Before commencing fieldwork in the nature reserve, the students must conduct a risk assessment.
Identify one specific physical hazard associated with fieldwork in a tropical nature reserve and suggest a corresponding safety measure.
[2]
Hazard: _______________________________________________________________
Safety Measure: ________________________________________________________
5. Define the term 'validity' in the context of geographical fieldwork.
[1]
Section B: Data Collection and Presentation (10 Marks)
6. The students decide to measure infiltration capacity at 50m intervals.
Suggest one reason why this interval size might be considered a limitation if the goal is to detect micro-scale variations in soil texture.
[2]
7. During the urban site investigation, students collect data on pedestrian flow using manual counters.
Explain one advantage and one disadvantage of using manual counting compared to automated sensor data.
[4]
Advantage: ____________________________________________________________
Disadvantage: _________________________________________________________
8. The students record the following infiltration rates (mm/hr) at Site A (Park):
120, 115, 125, 118, 122
Calculate the mean infiltration rate for Site A. Show your working.
[2]
9. Which of the following graphical representations is most appropriate for comparing the mean infiltration rates of Site A (Park) and Site B (Urban)?
[1]
A) Line Graph
B) Scatter Graph
C) Grouped Bar Chart
D) Pie Chart
10. The students also collect qualitative data on "perceived safety" using a bipolar survey (scale 1-5).
Explain why this type of data is considered subjective.
[2]
Section C: Analysis and Evaluation (10 Marks)
11. When presenting spatial data of land-use changes over time, the students choose to use GIS (Geographic Information Systems) layers.
State one specific advantage of using GIS over traditional hand-drawn maps for this analysis.
[2]
12. The students find that infiltration rates in the urban site are significantly lower than in the park.
Explain two physical reasons for this difference, referring to surface characteristics.
[4]
13. A student argues that their data is reliable because they took three readings at each point and calculated an average.
Evaluate this claim. Is taking three readings sufficient to ensure reliability in a heterogeneous environment? Justify your answer.
[3]
14. The investigation was conducted during a dry spell.
Explain how this temporal factor might limit the generalizability of the conclusions regarding flood risk in Singapore.
[3]
15. The students used a questionnaire to assess residents' awareness of flood risks in the urban area.
Identify one potential source of bias in the sampling strategy if the questionnaire was only distributed between 9 am and 11 am on a weekday.
[2]
Section D: Extended Evaluation and Synthesis (10 Marks)
16. "Fieldwork investigations in urban environments are always more challenging than in physical environments due to access restrictions."
To what extent do you agree with this statement? Provide one argument for and one argument against.
[4]
Argument For: _________________________________________________________
Argument Against: _____________________________________________________
17. In evaluating the overall success of the investigation, the students note that their sample size was small (n=10 per site).
Explain how increasing the sample size would improve the statistical significance of their results.
[2]
18. The students wish to correlate infiltration rates with soil compaction levels.
Suggest one appropriate statistical test they could use to determine if there is a significant relationship between these two continuous variables, and state one reason for your choice.
[2]
Test: __________________________________________________________________
Reason: _______________________________________________________________
19. During the fieldwork, one student accidentally kicks the infiltrometer, disturbing the soil surface at a measurement point.
Explain how this specific incident affects the accuracy of the data collected at that point, and suggest how the students should handle this data point during analysis.
[2]
20. Based on the findings that urban areas have lower infiltration rates, propose one sustainable urban drainage system (SUDS) feature that could be implemented in Orchard Road to mitigate flood risk, and explain how it works.
[2]
Feature: ______________________________________________________________
Explanation: __________________________________________________________
Answers
A-Level Geography H1 Quiz - Fieldwork (Answer Key)
Total Marks: 40
Section A: Research Design and Methodology
1. Hypothesis Statement [1]
- Answer: Infiltration rates will be higher in the vegetated park area compared to the dense urban area.
- Marking Note: Must indicate a directional relationship between land use and infiltration. Accept "Urban areas have lower infiltration rates than park areas."
2. Systematic vs. Random Sampling [2]
- Answer: Systematic sampling ensures even coverage along the transect (gradient) from urban to rural, allowing for the identification of trends/patterns across the change in land use. Random sampling might cluster points in one area, missing the transition zone.
- Marking Note: 1 mark for identifying even coverage/trend detection. 1 mark for contrasting with random sampling's potential clustering/gaps.
3. Controlled Variables [2]
- Answer: Any two of the following:
- Volume of water poured into the infiltrometer.
- Duration of time allowed for infiltration measurement.
- Depth of ring insertion into the soil.
- Antecedent soil moisture conditions (though hard to control, it is a variable to note).
- Marking Note: 1 mark per valid variable.
4. Risk Assessment [2]
- Answer:
- Hazard: Snake/insect bites, slippery terrain/roots, heat exhaustion/dehydration.
- Safety Measure: Wear covered shoes/long pants, carry first aid kit/epipen, bring sufficient water, work in pairs/buddy system.
- Marking Note: 1 mark for a relevant hazard in a tropical nature reserve context. 1 mark for a matching, practical safety measure.
5. Validity Definition [1]
- Answer: Validity refers to whether the method/instrument actually measures what it is intended to measure (e.g., does the infiltrometer truly measure infiltration capacity, or is it affected by surface runoff?).
- Marking Note: Must mention "measuring what is intended."
Section B: Data Collection and Presentation
6. Interval Limitation [2]
- Answer: A 50m interval is too coarse to detect micro-scale variations (e.g., a small patch of compacted soil or a drain) that occur over distances of less than 50m. This leads to a loss of detail and potential anomalies being missed.
- Marking Note: 1 mark for identifying the scale mismatch. 1 mark for explaining the consequence (missing detail/anomalies).
7. Manual vs. Automated Counting [4]
- Answer:
- Advantage: Manual counting allows for the classification of pedestrian types (e.g., tourists vs. locals, age groups) which sensors might not distinguish easily without advanced AI. It is also low-cost.
- Disadvantage: Prone to human error (fatigue, distraction), limited to short durations, and cannot operate 24/7.
- Marking Note: 2 marks for a clear advantage. 2 marks for a clear disadvantage.
8. Mean Calculation [2]
- Working:
- Sum:
- Mean: mm/hr
- Marking Note: 1 mark for correct sum/setup. 1 mark for correct final answer (120).
9. Graphical Representation [1]
- Answer: C) Grouped Bar Chart
- Marking Note: Bar charts are best for comparing discrete categories (Site A vs Site B).
10. Subjectivity of Bipolar Survey [2]
- Answer: Perceived safety is based on individual feelings, experiences, and biases, not objective physical measurements. Different respondents may interpret the scale (1-5) differently based on their personal threshold for fear.
- Marking Note: 1 mark for linking to individual opinion/feeling. 1 mark for explaining the lack of objective standard.
Section C: Analysis and Evaluation
11. GIS Advantage [2]
- Answer: GIS allows for the overlaying of multiple data layers (e.g., land use, elevation, infiltration rates) to identify complex spatial correlations that are difficult to see on hand-drawn maps. It also allows for easy updating and precise area calculations.
- Marking Note: 1 mark for overlay/multi-layer analysis. 1 mark for precision/ease of update.
12. Physical Reasons for Infiltration Difference [4]
- Answer:
- Surface Permeability: Urban areas have impermeable surfaces (concrete, asphalt) which prevent water from entering the soil, leading to high surface runoff. Park areas have permeable soil.
- Vegetation/Root Action: Park areas have vegetation whose roots create macropores in the soil, increasing infiltration. Urban areas lack this biological enhancement.
- Marking Note: 2 marks per reason. Must explain the mechanism (e.g., impermeable surface blocks water; roots create pores).
13. Reliability Evaluation [3]
- Answer: Taking three readings improves reliability by allowing the calculation of a mean and identification of anomalies. However, in a heterogeneous environment, n=3 may still be insufficient to account for spatial variability. More repeats (e.g., 5-10) or a larger spatial sample would be better. Therefore, the claim is partially valid but limited.
- Marking Note: 1 mark for acknowledging the benefit of averaging. 1 mark for critiquing the sample size (n=3 is low). 1 mark for a balanced judgment.
14. Temporal Factor Limitation [3]
- Answer: Infiltration rates are significantly affected by antecedent moisture. During a dry spell, soil is dry and infiltration capacity is high. During monsoon seasons, soil may be saturated, leading to lower infiltration and higher runoff. Therefore, data from a dry spell overestimates infiltration capacity and underestimates flood risk for typical Singapore weather conditions.
- Marking Note: 1 mark for linking dry spell to high infiltration/low saturation. 1 mark for contrasting with wet conditions. 1 mark for concluding on generalizability/flood risk underestimation.
15. Sampling Bias [2]
- Answer: Distributing questionnaires only on weekday mornings excludes working adults and students who are at work/school. The sample will be biased towards the elderly, unemployed, or shift workers, who may have different risk perceptions or vulnerabilities compared to the general population.
- Marking Note: 1 mark for identifying the excluded group. 1 mark for explaining the resulting bias in perspective.
Section D: Extended Evaluation and Synthesis
16. Urban vs. Physical Fieldwork Challenges [4]
- Answer:
- Agree (Access): Urban fieldwork often requires permission from private property owners, shopping malls, or authorities, which can be difficult to obtain. Safety concerns (traffic, crime) are also higher.
- Disagree (Physical): Physical environments (e.g., mountains, rivers) present harsher physical conditions (weather, terrain) that can damage equipment and pose greater physical safety risks (drowning, falls), which can be more challenging than logistical urban access.
- Marking Note: 2 marks for a well-explained argument for. 2 marks for a well-explained argument against.
17. Sample Size and Statistical Significance [2]
- Answer: Increasing the sample size reduces the impact of outliers and random errors, making the mean more representative of the true population. This increases the confidence level in statistical tests (e.g., t-test), making it more likely that observed differences are statistically significant rather than due to chance.
- Marking Note: 1 mark for reducing outlier impact/representativeness. 1 mark for linking to statistical confidence/significance.
18. Statistical Test Selection [2]
- Answer:
- Test: Spearman’s Rank Correlation Coefficient.
- Reason: It is used to test for a monotonic relationship between two sets of continuous/ordinal data (infiltration rate and compaction level) and does not assume a normal distribution. (Alternatively: Pearson’s Product Moment if normal distribution is assumed).
- Marking Note: 1 mark for correct test name. 1 mark for valid reason linking to data type/relationship.
19. Data Accuracy and Anomalies [2]
- Answer: Disturbing the soil surface artificially increases porosity or creates channels, leading to an inaccurately high infiltration reading (an anomaly). The students should treat this data point as an anomaly/outlier and exclude it from the mean calculation, or repeat the measurement at that specific point if time permits.
- Marking Note: 1 mark for explaining the effect (inaccurate/high reading). 1 mark for the correct handling (exclude/repeat).
20. Sustainable Urban Drainage Systems (SUDS) [2]
- Answer:
- Feature: Permeable Pavement / Green Roof / Rain Garden.
- Explanation: Permeable pavement allows water to infiltrate through the surface into the ground below, reducing surface runoff. (Or: Green roofs absorb rainfall in vegetation/soil, reducing volume and speed of runoff).
- Marking Note: 1 mark for a valid SUDS feature. 1 mark for a correct explanation of how it mitigates flood risk/increases infiltration.