NYJC_H1_Prelim 2008

NANYANG JUNIOR COLLEGE Preliminary Examination H1 GEOGRAPHY 8812/01 Physical and Human Geography 10 September 2008 3 hours Additional Materials: Answer Paper Insert World Outline Map READ THESE INSTRUCTIONS FIRST Write your class, index number 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 a soft pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. Section A Answer all questions. Section B Answer one question. Section C Answer one question. The Insert contains the Photograph and all the Figures referred to in the question paper. You should make reference to appropriate examples studied in the field or the classroom, even where such examples are not specifically requested by the questions. Diagrams 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, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 6 printed pages and 1 insert. [Turn over

2 Section A Answer all the questions in this section. Questions 1 carries 14 marks, and Questions 2, 3 and 4 carry 12 marks. You should allocate your time accordingly. Lithospheric Processes, Hazards and Management 1 Figs 1A and 1B show the relationship between climate variables and rates of physical weathering and chemical weathering respectively. (a) Describe briefly the main features of the two diagrams. [3] (b) Why do the climatic factors that favour physical weathering appear to deter chemical weathering, and vice versa? [5] (c) Suggest and explain two factors other than climate which affect the weathering o f r o c k s . [ 6 ] The Globalisation of Economic Activity 2 Fig. 2 shows Dell’s global operations in 2001. (a) Describe the spatial pattern of Dell’s operations as shown on Fig. 2. [3] (b) What role does technology play in facilitating Dell’s production system? [3] (c) What other factors help to explain Dell’s global operations? [6]

3 Hydrologic Processes, Hazards and Management 3 EITHER Fig. 3 shows changes in channel properties from source to mouth in a drainage basin. (a) Describe the relationship between stream discharge and bed material grain s i z e . [ 1 ] (b) Account for the change in bed material grain size downstream. [2] (c) The hydraulic radius is an integral part of stream study. (i) Explain how it is calculated in the field. [3] (ii) How would it change downstream and why? [2] (iii) Show how it may differ in meandering and braided channels. [4] Urban Issues and Challenges 3 OR Fig. 4 shows two processes occurring within a large urban area in a DC. (a) Name t