Earth: Our Home 2 (S/E and N(A))
QUESTION BANK Chapter 8

                                                  CHAPTER 8: WAT...
Earth: Our Home 2 (S/E and N(A))
QUESTION BANK Chapter 8
                                                                 ...
Earth: Our Home 2 (S/E and N(A))
QUESTION BANK Chapter 8
                                                                 ...
Earth: Our Home 2 (S/E and N(A))
QUESTION BANK Chapter 8
      D Africa                                              Ans: ...
Earth: Our Home 2 (S/E and N(A))
QUESTION BANK Chapter 8


14.   Study the graph below. What is a possible reason for the ...
Earth: Our Home 2 (S/E and N(A))
QUESTION BANK Chapter 8




Structured Essay Questions (15 marks)

1.    Study the graph ...
Earth: Our Home 2 (S/E and N(A))
QUESTION BANK Chapter 8
      - The rise in world population after 1940 has increased wat...
Earth: Our Home 2 (S/E and N(A))
QUESTION BANK Chapter 8




2.    Study the comic strip below carefully. The Public Utili...
Earth: Our Home 2 (S/E and N(A))
QUESTION BANK Chapter 8




(a)   What is the method that is used to help conserve water ...
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SEC23 GEOG Chapt8 Water Qs

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SEC23 GEOG Chapt8 Water Qs

  1. 1. Earth: Our Home 2 (S/E and N(A)) QUESTION BANK Chapter 8 CHAPTER 8: WATER RESOURCES Multiple-choice Questions (15 marks) 1. Which portion shows the proportion of fresh surface water? A 97% QuickTimeª and a 3% TIFF (LZW) decompressor B are needed to see this picture. 2% C D 1% Ans: D 2. Why is water constraint experienced in different parts of the world? A Some areas do not experience seasonal changes in weather. B Some areas may experience long periods of drought. C Some areas do not use irrigation to get their water supply. D Some areas may experience snow melting during spring. Ans: B 3. How do changes in lifestyle result in a rising demand for water? A People use more electrical appliances such as washing machines that use up water. B People engage in more agricultural activities because of increasing population. C As a result of a growing world population, more people will need more water. D With a growing demand for food, more water will be needed for agriculture. QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. 1
  2. 2. Earth: Our Home 2 (S/E and N(A)) QUESTION BANK Chapter 8 Ans: A 4. What is a catchment area? A It is an area over which rivers and streams are found. B It is an area over which rain falls and is collected. C It is an area over which the sea collects water from rivers. D It is an area over which drains and canals collect water. Ans: B 5. Which area is suitable as a catchment area? A Valley B Mountain C Nature reserve D Old quarry Ans: C 6. What is the advantage and disadvantage of increasing catchment areas? Advantage Disadvantage Catchment areas have There is little control over A multiple landuses such as the amount of water industrial landuse. collected. Fresh water collected in Not much water can be B catchment areas is easier to collected in a catchment purify. area. In times of drought, There are few areas suitable C catchment areas are able to for catchment areas. collect water. D More areas for nature Less land is available for conservation are set aside. other uses. Ans: D 7. How can international agreements help to increase water supply? A They allow countries to collect water from other countries. B They allow countries to develop catchment areas in other countries. C They allow countries to share and manage water resources. D They allow countries to use water resources from other countries for free. QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. 2
  3. 3. Earth: Our Home 2 (S/E and N(A)) QUESTION BANK Chapter 8 Ans: C 8. Why is water reclaimed? A There is available waste water that can be recycled. B It is cheaper to reclaim water than to treat fresh water. C Water that is reclaimed has a higher quality than treated fresh water. D Although water is abundant, there is a need to reclaim water. Ans: A 9. How is desalination carried out? A It is carried out by processes that remove salt from sea water. B It is carried out by processes that recycle waste water. C It is carried out by processes that treat water from rivers. D It is carried out by processes that purify fresh water. Ans: A Study the diagram below and answer questions 10 and 11. Distribution of major desalination plants in the world Middle East North America Africa Europe Asia Australia South America Central America 10. Which area has the largest portion of desalination plants in the world? A North America B Middle East C Europe QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. 3
  4. 4. Earth: Our Home 2 (S/E and N(A)) QUESTION BANK Chapter 8 D Africa Ans: B 11. Why does the area mentioned in Question 10 have the most desalination plants in the world? I. Low costs have enabled this area to carry out desalination. II. Proximity to the sea has enabled sea water to be used. III. The dry climate does not allow much water to be collected. IV. Available advanced technology has allowed desalination to be carried out. A I only B I and II C II, III and IV D All of the above Ans: C 12. Why is conserving water beneficial to individual households? A Water treatment costs are lower. B More water is allocated to individual households. C Households get a continuous supply of water. D It helps to reduce water consumption bills. Ans: D 13. Which one of the following statements is true about NEWater? A NEWater cannot be drunk without treating it further. B The quality of NEWater surpasses international drinking water standards. C NEWater is supplied directly to households for consumption. D The desalination process is used to produce NEWater. Ans: B QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. 4
  5. 5. Earth: Our Home 2 (S/E and N(A)) QUESTION BANK Chapter 8 14. Study the graph below. What is a possible reason for the highest consumption of water shown in the graph? QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. A There are more occupants in HDB 5-room and bigger flats, resulting in higher water consumption. B In HDB 4-room flats, more water is used for domestic purposes. C More water is used in filling swimming pools at condominiums and private flats. D In some private houses, more water is used in watering the garden. Ans: D 15. Which one of the following is an example of water conservation measures in Singapore? A A water conservation tax is imposed to discourage people from using too much water. B Water is limited for use for domestic, industrial and commercial purposes only. C Water-rationing is carried out for a month at some estates to reduce water consumption. D The amount of water that can be used in one household is limited. Ans: A QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. 5
  6. 6. Earth: Our Home 2 (S/E and N(A)) QUESTION BANK Chapter 8 Structured Essay Questions (15 marks) 1. Study the graph below carefully. QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. World’s consumption of water supply from 1900 to 2000 (a) Describe the trend of total water use in the world. [1] The total water use in the world is increasing. (b) What impact does this have on the world’s water supply? [1] There will be a shortage in the future if the demand for water is not reduced. (c) Why is there a big change in total water use from the year 1940? [2] Any one of the following: - The growth of industries after 1940 has increased water consumption. QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. 6
  7. 7. Earth: Our Home 2 (S/E and N(A)) QUESTION BANK Chapter 8 - The rise in world population after 1940 has increased water consumption. (Also accept other plausible answers.) (d) Which use consumed the highest portion of water in the world? [1] Agricultural use (e) Why has this use consumed the highest portion? [2] - The rise in the world’s population results in the increasing need to grow food. - Therefore, most water is used to grow crops and rear livestock. QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. 7
  8. 8. Earth: Our Home 2 (S/E and N(A)) QUESTION BANK Chapter 8 2. Study the comic strip below carefully. The Public Utilities Board (PUB) in Singapore uses similar comic strips on brochures and posters. QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. 8
  9. 9. Earth: Our Home 2 (S/E and N(A)) QUESTION BANK Chapter 8 (a) What is the method that is used to help conserve water in Singapore? [1] Public campaign / education is used to raise awareness on water conservation in Singapore. (b) Why is this method used to help conserve water in Singapore? [2] This method is used because it encourages all Singaporeans to play a part in water conservation on an individual level. (c) Explain how the comic strip tells us how to conserve water. [2] - The comic strip describes how water should be used more efficiently. - Filling a washtub with water to wash dishes instead of washing them under a running tap will reduce the wastage of water. (d) Suggest another two ways in which water can be conserved by individuals. [2] Any two of the following: - Washing a full load of laundry at a time instead of only a few items - Installing water-saving devices on taps and water cisterns - Collecting water in a tumbler for brushing teeth instead of leaving the tap running (Also accept other plausible answers.) (e) Why is there a need to conserve water? [1] Water needs to be conserved to prevent water shortage in the future. Water is a basic requirement for all living things. QuickTimeª and a TIFF (LZW) decompressor are needed to see this picture. 9

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