2025 DHS Prelim P2 QP

Name: Class: Centre Number: Index Number: _________________________________________________________________________ HIGHER 2 GEOGRAPHY 9173/02 PAPER 2 Thursday 18 Sep 2025 3 hours Additional materials: Insert _________________________________________________________________________ READ THESE INSTRUCTIONS FIRST If you have been given an Answer Booklet, follow the instructions on the front cover of the Booklet. Write your Centre number, index number and name on the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer Question 1 in Section A. Answer Question 2 in Section B. Answer one question in Section C The number of marks is given in the brackets [ ] at the end of each question or part question. This document consists of 4 printed pages. [Turn over DUNMAN HIGH SCHOOL PRELIMINARY EXAMINATION Year 6

2 9173/2025/Y6 Preliminary Examination/P2/QP Section A Cluster 4 Fieldwork 1 Sungei Bedok is a river in the eastern part of Singapore that flows through areas with different categories of land use. Ten junior college students were interested in comparing these land uses to investigate whether some were subject to higher flood risk than others. Before the main fieldwork, the group conducted a recce trip (a short preliminary visit) on 6 August, during which they took photographs of the river and noted potential study sites across seven land uses. They also observed that most of Sungei Bedok had been canalised and concluded that the bankfull width and depth would remain uniform throughout the entire stretch. The actual field investigation was carried out on 15 August. On that day, they took a single reading of bankfull width and depth, and administered a bi-polar survey to assess and compare flood risk across different land uses. For each land use category, they selected two sites to conduct the bi-polar survey. Resource 1 shows a land use map of the vicinity of Sungei Bedok. Resource 2 shows a photo taken of the section of Sungei Bedok where they collected data on 15 August. Resource 3 shows a bi-polar survey crafted by the students. Resource 4 shows collated results of bipolar survey across all land uses. (a) Suggest a hypothesis and explain why it is appropriate for the investigation. [4] (b) Explain why it was important for students to go on a recce trip before the actual fieldwork. [5] (c) With reference to Resource 2, explain how features of this river could mitigate flood risk. [4] (d) With reference to Resource 2, describe how bankfull depth and width could be measured accurately. [5] (e) With refere