Geography SL+HL Paper 2ms

Geography SL+HL Paper 2ms - IB DIPLOMA PROGRAMME PROGRAMME...

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MARKSCHEME November 2004 GEOGRAPHY Higher Level and Standard Level Paper 2 N04/GEOGR/BP2/ENG/TZ0/XX/M+ 26 pages IB DIPLOMA PROGRAMME PROGRAMME DU DIPLÔME DU BI PROGRAMA DEL DIPLOMA DEL BI
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– 2 – N04/GEOGR/BP2/ENG/TZ0/XX/M This markscheme is confdential and for the exclusive use of examiners in this examination session. It is the property of the International Baccalaureate and must not be reproduced or distributed to any other person without the authorisation of IBCA.
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– 3 – N04/GEOGR/BP2/ENG/TZ0/XX/M SECTION A A1. Drainage basins and their management Either (a) Essay Referring to at least two river basins, discuss the extent to which management schemes create both beneFts and problems. [20 marks] Management of river systems should incorporate strategies, which are multi-purpose, integrated or single purpose. A variety of responses could be expected depending on the choice of examples and approach. Good responses will discuss the ways in which such schemes bring beneFts and problems and the choice of examples should re±ect this by illustrating such contrasting effects. In the case of beneFts these could include – ±ood control through the construction of dams, barrages, river straightening, deepening, wing dykes, levées and other appropriate strategies. It might be appropriate to discuss the effectiveness of ±ood control schemes in urban areas like Singapore or to examine the beneFts of the central Valley scheme in California. There are a number of problems: large dams can impede the ±ow of sediment and exacerbate the erosion hazard. In the case of the Mississippi it is possible that engineering works have increased the recurrence intervals of ±oods and their magnitude. Management in countries like Israel, where there are shortages of water, can have political implications for the surrounding countries. Irrigation schemes, which are often part of integrated projects can cause salinization (Aral Sea). There is a movement in the US to remove large dams and many future projects may focus on eco-management. Rivers may be allowed to follow their own natural regime or soft management practices like afforestation may be employed. Responses that fail to focus on the beneFts and problems associated with such schemes may not move beyond band ². Responses which discuss only beneFts or problems may not move beyond band E. Where only one river basin is referred to, the response may not be awarded marks beyond band E. The marks should be allocated according to the markbands. Examiners should be aware that candidates may take a different approach which if appropriate should be fully rewarded.
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– 4 – N04/GEOGR/BP2/ENG/TZ0/XX/M Or (b) Structured question (i) Evaluate the accuracy of the information shown in the diagram. [6 marks] In the upper course responses should note that, in agreement with the model, the course is steep and there is a lot of erosion but that the river only Fows quickly intermittently. There are lots of convexities in the pro±le (waterfalls, rapids) and bed roughness levels
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This note was uploaded on 06/22/2010 for the course COMCC 05123 taught by Professor Mcgee during the Spring '10 term at York County CC.

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Geography SL+HL Paper 2ms - IB DIPLOMA PROGRAMME PROGRAMME...

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