CAPE Environmental Science Unit 2 · 2019 · Paper 2

35 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 marksList THREE environmentally sustainable agricultural practices other than conservation tillage and postharvest management.
2. 1(a)(ii)5 marksIn the space provided, construct a bar chart to present the data provided in Table 1 comparing characteristics of Farm A and Farm B.
3. 1(b)(i)6 marksExplain any TWO roles which agriculture plays in the Caribbean region.
4. 1(b)(ii)6 marksExplain how conservation tillage AND postharvest management work to enable sustainable agriculture.
5. 2(a)(i)1 markState a suitable hypothesis for this experiment.
6. 2(a)(ii)3 marksList THREE of the controlled variables in this experiment.
7. 2(a)(iii)1 markState the responding variable in this experiment.
8. 2(a)(iv)6 marksA decision is taken to use inorganic fertilizers in a garden that is watered daily and located on the banks of a river. Name the likely impact this will have on the environment, and describe what is likely to occur as a…
9. 2(b)(i)3 marksList THREE features of sustainable agriculture.
10. 2(b)(ii)6 marksExplain how certification to meet international standards AND the importation of cheap agricultural products can impact sustainable agriculture, referring to the feature of sustainable agriculture threatened by EACH…
11. 3(a)(i)1 markDefine the term 'energy'.
12. 3(a)(ii)6 marksExplain the conversion of energy in a steam turbine electricity generator by using boxes I, II, and III to label and annotate Figure 2.
13. 3(b)(i)3 marksUse the data in Table 2 to sketch a pie chart showing the percentage of energy generated from different sources in St Christopher (Kitts) and Nevis.
14. 3(b)(ii)6 marksDiscuss TWO geographical limitations and ONE technological limitation of St Christopher (Kitts) and Nevis diversifying its energy sources away from fossil fuels.
15. 3(c)4 marksExplain, using ONE example for EACH, TWO ways in which government policies may influence the supply and use of energy in the Caribbean.
16. 4(a)(i)3 marksState THREE trends observed in Figure 3 showing fuel costs over a five-year period.
17. 4(a)(ii)2 marksSuggest a reason for any ONE of the trends stated in (a)(i).
18. 4(a)(iii)3 marksExplain the relationship between 'electricity demand' and 'peak hourly load'.
19. 4(b)(i)2 marksDefine the term 'energy conservation' and state ONE example.
20. 4(b)(ii)2 marksDefine the term 'energy efficiency' and state ONE example.
21. 4(b)(iii)4 marksExplain, using TWO examples, how cogeneration may be used to promote energy conservation in buildings.
22. 4(c)4 marksExplain ONE environmental and ONE socioeconomic impact of utilizing a named form of energy on the environment.
23. 5(a)(i)2 marksDefine the term 'pollutant'.
24. 5(a)(ii)2 marksState the name of TWO pollutants, other than carbon dioxide, that are MOST likely to be found in the air at Chatham during the lignite fire.
25. 5(a)(iii)6 marksChoose ONE of the pollutants named in (a)(ii) and explain how it impacts both human health AND the environment.
26. 5(b)(i)3 marksDetermine the percentage of sulphur present in the lignite.
27. 5(b)(ii)2 marksCalculate the mass in grams of sulphur that would be found in a 1 kg sample of the lignite.
28. 5(b)(iii)1 markState ONE method of mitigating the problem of pollutants produced by coal combustion in an electrical power plant, other than technological solutions.
29. 5(b)(iv)4 marksExplain TWO ways in which the pollution problem at coal-burning electrical power plants can be mitigated by technological solutions.
30. 6(a)(i)1 markUse the data in Table 3 to deduce the point in the river where the pollution problem is greatest.
31. 6(a)(ii)4 marksOutline an experimental approach to determine whether the sewage disposal practices of Cielo Village or the El Frio Fish Processing Plant is more likely responsible for the water pollution problem, clearly indicating…
32. 6(b)6 marksExplain why fishes in Oyster Bay show high levels of metals even though metal concentrations in the river water are low.
33. 6(c)2 marksDefine the term 'receptor'.
34. 6(d)4 marksIdentify the MOST suitable international convention that applies to the harvesting and management of fisheries in Oyster Bay, and explain how it works to protect the fishing grounds.
35. 6(e)3 marksState what type of pollution sources Azul Village and Cielo Village can be described as, and briefly explain your response.