RI_H2_GEO_P2_DRQ_Answers

1 Paper 2 Suggested Points Geographical Investigation 1 (a) With Reference to Resource 1, suggest a suitable hypothesis for this geographical investigation. [1] The infiltration rates of soil in Bishan-AMK park is higher than soil at junction of Tanglin and Grange roads. (b) Describe three potential risks at Site A shown in Resource 2 and explain how each risk could be minimized. [6] Site A is near Kallang river, may have steep or gentle slopes + grass + flora and fauna – wear proper shoes to avoid falling and proper clothing to protect from insect bites etc Low human traffic esp weekdays as most residents around the area may be working, nearest housing about 400m away and park users may bring pets – go in groups and be aware of strangers, inform teachers and park authority Increment weather – check forecast, bring umbrella, hot so must be properly hydrated (c) Explain how you would minimize the impact of your investigation at Sites A and B differently. [4] A is near walking path/ river / trees / park facilities so avoid unnecessary damage to trees and plants and do not vandalise park facilities and B near construction and offices so do not hinder / get into the way of people who need to work (do not block their way or be in way of construction machines / vehicles) Cannot disturb the people / make unnecessary noise – A – park users who are using the parks , B – residents and construction and office workers from the 200m radius doing their daily activities (d) Suggest two limitations of Resource 3 in representing the findings and draw bar graphs to represent the infiltration rates of Sites A and B. Difficulty in seeing the differences in infiltration rates between sites / days (lack of visual comparison) Extra information / unnecessary info meant for calculation and not for audience [5]

2 (e) Evaluate this investigation to ascer tain the flood risks of Sites A and B, and explain how it could be improved and extended. Strengths Choice of 2 distinct sites. Infiltration provides a sense of how different land uses (park vs construction) impact infiltration rates Construction site has a lower infiltration rates of 2.5 while park 4 to 7. Problems and improvements Lack proper sampling method and limited in the number of samples. Make sure infiltrometer is hammered to 5cm and not gently twist . Must watch the water levels in both rings to ensure the water will not flow sideways. Must twist ring deep enough so that water will not leak out [9] 0 1 2 3 4 5 6 7 8 Site A Site B Infiltration Rates (mm/min) Day 1 Day 2 0 1 2 3 4 5 6 7 8 Day 1 Day 2 Infiltration Rates (mm/min) Site A Site B

3 Theme 1: Tropical Environments Plantations in Pahang Extension More sites/ temporal aspects – effec