2019 JC2 H2 Geography Prelim P2 ANSWER SCHEME

1 Catholic Junior College 2018/2019 GEOGRAPHY 9751/02 Paper 2 2 September 2019 3 hours Additional Materials: Answer Paper 1 Insert READ THESE INSTRUCTIONS FIRST Write your class and name on all 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, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. Candidates answer all questions. The Insert contains all the Resources referred to in the questions. You should make reference to appropriate examples studied in the field or the classroom, even where such examples are not specifically requested by the question. Diagram and sketch maps should be drawn whenever they serve to illustrate an answer. The world outline map may be annotated and handed in with relevant answers. You are reminded of the need for good English and clear presentation in your answers. At the end of the examination, you are to hand in each question separately. The number of marks is given in brackets [ ] at the end of each question or part question. Start each question on a fresh sheet of paper. You will hand in each question separately. This document consists of 12 printed pages and 1 blank page. [Turn over Catholic Junior College JC2 Preliminary Examinations Higher 2

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3 Catholic Junior College 2018/2019 Section A ANSWER SCHEME Theme 4: Geographical Investigations Flood Risk Investigation in Hong Kong 1 A group of Geography students carried out geographical investigation along a river in the New Territories, Hong Kong, in February. They wanted to ascertain the flood risk of the region. They divided themselves into 4 teams of 8 members each to measure the cross-sectional area and river velocity of 4 selected sites along the river. The discharge of each of the 4 sections was calculated by multiplying the cross-sectional area of the river by the river velocity. The teams were given the following equipment:  1 x Table Tennis ball  2 x Tape measures  2 x Stop watch  1 x Meter ruler  4 x Range poles To measure river velocity, the time taken for the table tennis ball to cover a pre-determined distance defined by two range poles at the side of the river was recorded for each site. At the field study site C, the team collecting the data noticed that the table tennis ball was stuck in fallen trees or debris in the river. The data collected was then recorded using a data collection sheet. To calculate the cross-sectional area, the width and depth of the river at each site had to be measured. The students laid an unweighted tape measure along the river bed to determine the width of the river. Depth measurements were taken at equal distances across the river using the meter ruler. This