CAPE Environmental Science Unit 2 · 2014 · Paper 2

38 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)3 marksState THREE deductions that could be made from the data presented in Figure 1.
2. 1(a)(ii)2 marksCalculate the combined percentage of farmers who use the TWO LEAST popular practices.
3. 1(a)(iii)4 marksSuggest TWO reasons why the practices identified in (a)(ii) are not popular.
4. 1(a)(iv)2 marksState TWO benefits that farmers derive from practising organic farming.
5. 1(b)6 marksExplain, giving TWO reasons, why global warming should be of major concern to agriculture-based economies in the Caribbean.
6. 1(c)3 marksSuggest THREE reasons why more farmers in the Caribbean are increasing their use of technology in agriculture.
7. 2(a)(i)5 marksIdentify which farm engages in subsistence agriculture, using the information in Table 1 to give FOUR reasons to justify your answer.
8. 2(a)(ii)7 marksState which farm is MOST likely to have a greater impact on the environment, explaining THREE reasons for your answer.
9. 2(b)4 marksExplain why the practice of sustainable agriculture maintains ecological integrity.
10. 2(c)(i)1 markState what percentage of pests was eliminated using the LEAST effective method.
11. 2(c)(ii)1 markIdentify which method was the MOST effective in controlling pests on Farm A.
12. 2(c)(iii)2 marksSuggest TWO reasons why the method identified in (c)(ii) may have been the MOST effective.
13. 3(a)3 marksCopy the flow diagram and complete the blank spaces to show the energy transformations.
14. 3(b)(i)1 markState which type of water heater is cheaper to operate.
15. 3(b)(ii)1 markCalculate the annual savings gained from owning the type of water heater chosen in (b)(i).
16. 3(b)(iii)6 marksCompare the performance of each water heater based on economic and energy conservation issues using the data in Table 2.
17. 3(c)(i)3 marksDescribe the trend illustrated in Figure 4.
18. 3(c)(ii)6 marksGive TWO reasons to explain how EACH of the following factors may produce the trend in petroleum prices seen in Figure 4: technological limitations, geographical restrictions, and reliability of supply.
19. 4(a)(i)3 marksIdentify the units labelled X, Y and Z in Figure 5.
20. 4(a)(ii)6 marksDiscuss in detail ONE environmental impact that is likely to result from the conventional generation of electricity from fossil fuels.
21. 4(b)(i)1 markRank the countries in order of DECREASING per capita electricity consumption.
22. 4(b)(ii)4 marksDetermine which country has the SMALLEST total electricity consumption using the data in Table 3.
23. 4(b)(iii)6 marksExplain how EACH of the following can affect electricity generating demand: economic cost, and government policies.
24. 5(a)3 marksCorrectly match each pollutant with its corresponding source.
25. 5(b)(i)3 marksExplain why the average nitrate concentrations in the two ponds are so different, even though the concentration of nitrate entering each pond is the same.
26. 5(b)(ii)6 marksState the name of the MOST likely environmental impact that will occur in Ponds A and B and discuss how this impact will affect the ponds.
27. 5(b)(iii)1 markSuggest ONE measure that could be taken to mitigate the environmental impact identified in (b)(ii).
28. 5(b)(iv)2 marksState whether the measure suggested in (b)(iii) would be effective, giving ONE reason for your answer.
29. 5(c)(i)1 markState how long it took for the river to show the effects of the rainfall event.
30. 5(c)(ii)1 markState when turbidity was at its maximum.
31. 5(c)(iii)3 marksAssess the statement: 'Five hours is a suitable experimental time for the river to achieve its pre-rainfall event turbidity.'
32. 6(a)2 marksIdentify which of the arrows labelled A–F in Figure 7 are INCORRECTLY placed.
33. 6(b)3 marksChoose ONE stage from the extraction stage, transportation stage, or processing stage for fossil fuels and explain why it may lead to environmental pollution.
34. 6(c)(i)5 marksUsing ONLY a suitably annotated diagram that shows the movement of energy, explain the 'greenhouse effect'.
35. 6(c)(ii)2 marksState what the Kyoto Protocol is.
36. 6(c)(iii)3 marksSuggest ONE reason why the Kyoto Protocol has not been very successful.
37. 6(d)(i)3 marksCalculate the annual rate of increase of atmospheric CFC-11 from 1979 to 1989.
38. 6(d)(ii)2 marksIdentify the period during which the Montreal Protocol began to have an effect on the atmospheric levels of CFC-11.