2023 TJC J1 MYE

1 TEMASEK JUNIOR COLLEGE 2023 JC1 H2 GEOGRAPHY WEIGHTED ASSESSMENT 2 Cluster 2 Structured Question Flooding in Bangladesh 1 Resource 1 shows a hydrograph for two rainfall events. Resource 2A shows rainfall levels in Bangladesh in July 2004 and Resource 2B shows the relief of Bangladesh. Resource 3 shows the aftermath of a flooding event in Dhaka, Bangladesh. (a) Using Resource 1, describe the differences in the hydrograph for the two rainfall events. [5] (b) Suggest reasons for the differences in the hydrograph for the two rainfall events shown in Resource 1. [3] (c) Describe the pattern of rainfall levels in Bangladesh as shown in Resource 2A. [3] (d) With reference to Resources 2A and 2B, explain the regular occurrence of floods in Bangladesh. [6] (e) Using Resource 3, suggest reasons why the effects of floods on people are likely to be varied. [6] (f) Explain three strategies that can be used to manage fluvial floods. [7]

2 Resource 1 for Question 1 A hydrograph for two events

3 Resource 2A for Question 1 Rainfall levels in Bangladesh in 2004 Resource 2B for Question 1 Relief in Bangladesh

4 Resource 3 for Question 1 Aftermath of a flooding event in Dhaka, Bangladesh

5 Cluster 2 Structured Question Flooding in Bangladesh 1 Resource 1 shows a hydrograph for two rainfall events. Resource 2A shows rainfall levels in Bangladesh in July 2004 and Resource 2B shows the relief of Bangladesh. Resource 3 shows the aftermath of a flooding event in Dhaka, Bangladesh. (a) Using Resource 1, describe the differences in the hydrograph for the two rainfall events. [5] Credit 1 mark per point; credit 1 mark for each additional points • Lag Time for 1st event is shorter • Overall discharge volume • Peak Discharge – Peak discharge for 1st event is lower • Rising Limb is steeper for the 1st storm event • 2nd storm event’s falling limb is steeper compared to 1st storm event. AO2 (b) Suggest reasons for the differences in the hydrograph for the two rainfall events shown in Resource 1. [3] Award a maximum of 1 and one additional mark for further development. • Antecedent soil moisture after the first storm has resulted in soil moisture storages being overwhelmed • Throughflow and baseflow from the first rainstorm may still be reaching the channel, contributing to the overall discharge storm flow • Intensity of storm might be lower for 2nd storm AO2 (c) Describe the pattern of rainfall levels in Bangladesh as shown in Resource 2A. [3] Award 1 mark for a description of the rainfall pattern. Award a maximum of 1 additional mark for further development of each description, where applicable. • Highest rainfall of 320mm at the coastal margins in South-East Bangladesh • Rainfall totals decreases towards the central and southern parts of the country • Lowest rainfall totals in the centre part of