CAPE Environmental Science Unit 2 · 2009 · Paper 2

47 questions and parts from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. 1(a)(i)2 marksState TWO characteristics of intensive aquaculture.
2. 1(a)(ii)2 marksState TWO characteristics of extensive aquaculture.
3. 1(b)(i)4 marksDescribe the trend in fish protein production illustrated in Figure 1, quoting specific values.
4. 1(b)(ii)6 marksDeduce which of the two aquaculture methods in Figure 1 would have a GREATER impact on the environment, providing TWO reasons to justify your response.
5. 1(c)6 marksDiscuss TWO environmental concerns associated with practicing aquaculture.
6. 2(a)(i)6 marksRecommend which of the two pest control methods shown in Table 1 rice farmers should use, and justify your response.
7. 2(a)(ii)4 marksDescribe another environmentally sustainable pest control method available to rice farmers.
8. 2(b)(i)2 marksRecommend TWO environmentally sustainable agricultural practices that can reduce water runoff and erosion on this hillside farm.
9. 2(b)(ii)8 marksJustify EACH of the two environmentally sustainable practices recommended in (b)(i).
10. 3(a)(i)1 markIdentify the agricultural practice shown in Figure 2.
11. 3(a)(ii)4 marksOutline FOUR features of the agricultural practice shown in Figure 2.
12. 3(b)5 marksPlot an appropriate graph on the insert provided to illustrate the annual tomato yield results shown in Table 2.
13. 3(c)4 marksSuggest FOUR reasons for the observed trend in the annual yield of tomatoes from 2000 to 2008.
14. 3(d)6 marksSuggest THREE reasons why this method of cultivation is considered sustainable.
15. 4(a)(i)2 marksDetermine the quantity of fossil fuel used for domestic and transportation purposes in Country A and Country B.
16. 4(a)(ii)3 marksDetermine which country uses the larger percentage of its fossil fuel for electricity generation.
17. 4(a)(iii)3 marksState THREE uses that could fall under the 'Other' category in Figure 3.
18. 4(b)12 marksDiscuss FOUR factors that would affect the supply of energy to a planned industrial estate in a remote area.
19. 5(a)(i)2 marksDetermine the environmental cost of using natural gas to produce electricity.
20. 5(a)(ii)6 marksA country intends to switch from coal to either geothermal energy or solar cells. Based solely on the data in Figure 4, recommend which renewable energy source to adopt, justifying your choice with TWO specific values.
21. 5(b)3 marksList THREE factors other than cost that must be considered when implementing a switch from coal to the recommended renewable energy source.
22. 5(c)9 marksFor a named Caribbean country, state whether the chosen renewable energy source would be a suitable replacement for coal, providing THREE supporting reasons.
23. 6(a)(i)1 markIdentify the year in which the number of nuclear power plants on order was equal to the number of plants in operation.
24. 6(a)(ii)1 markIdentify the year in which the number of nuclear power plants on order reached its peak.
25. 6(a)(iii)1 markDetermine the number of nuclear power plants on order in 1995.
26. 6(a)(iv)2 marksCalculate the average rate of decline in the number of nuclear power plants on order over the period shown in Figure 5.
27. 6(b)15 marksDiscuss the environmental impact of utilizing nuclear power, identifying TWO positive impacts and THREE negative impacts.
28. 7(a)(i)1 markRank the different solid waste types in order of increasing daily mass entering the landfill.
29. 7(a)(ii)1 markDetermine the percentage contribution of the waste type with the smallest daily mass in the landfill.
30. 7(a)(iii)2 marksCalculate the time (in days) required to deposit 28 tonnes of waste of the composition shown in Table 3.
31. 7(a)(iv)2 marksSuggest ONE reason why the quantity of metal disposed of at the landfill is relatively low.
32. 7(b)(i)2 marksDefine the term 'leachate'.
33. 7(b)(ii)4 marksIdentify FOUR pollutants, excluding leachate, that can be released by a landfill.
34. 7(c)(i)2 marksIdentify which well is MOST likely to be contaminated by the landfill.
35. 7(c)(ii)4 marksExplain how a pollutant from the landfill could contaminate the drinking water well.
36. 7(c)(iii)2 marksExplain why the other drinking water well is NOT likely to become contaminated.
37. 8(a)2 marksDefine the term 'noise pollution'.
38. 8(b)6 marksExplain why noise is classified as a pollutant, giving THREE reasons.
39. 8(c)(i)2 marksDetermine the distance from the fete at which a homeowner would likely NOT be disturbed by the noise.
40. 8(c)(ii)2 marksA person parked 0.5 km away from the fete. Calculate how far they must walk towards the fete before encountering a harmful noise level of 84 dBA.
41. 8(d)8 marksExplain how any TWO measures mitigate noise pollution, stating ONE specific example of how EACH measure is applied.
42. 9(a)(i)2 marksLabel any TWO layers of the atmosphere on Figure 8.
43. 9(a)(ii)1 markIndicate the position of the ozone layer on Figure 8.
44. 9(a)(iii)1 markIdentify the altitude at which the ozone concentration is LOWEST on Figure 8.
45. 9(a)(iv)3 marksDescribe the relationship between ozone concentration and altitude shown in Figure 8.
46. 9(b)8 marksDiscuss the statement: 'It is vital to the good health of our environment that the ozone layer is preserved', including FOUR key points.
47. 9(c)5 marksExplain how a named international treaty functions to protect the ozone layer and reduce ozone depletion.