CAPE Environmental Science Unit 2 · 2017 · Paper 2

31 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)4 marksOutline TWO reasons why agriculture is important in the Caribbean.
2. 1(b)(i)3 marksDraw a diagram to illustrate the environmentally sustainable practice of terracing in agricultural systems.
3. 1(b)(ii)1 markName ONE other environmentally sustainable practice used in agricultural systems.
4. 1(c)6 marksOutline THREE ways in which genetic engineering can be used to improve agriculture.
5. 1(d)6 marksDiscuss TWO negative effects of using agrochemicals.
6. 2(a)6 marksDiscuss THREE advantages of using the device shown in Figure 1.
7. 2(b)8 marksTwo features of sustainable agriculture are economic viability and ecological integrity. Evaluate the ability of the device in Figure 1 to achieve economic viability and ecological integrity.
8. 2(c)(i)3 marksList THREE factors that may threaten sustainable agriculture.
9. 2(c)(ii)3 marksUsing an example, explain how any ONE of the factors listed in (c)(i) may threaten sustainable agriculture.
10. 3(a)(i)2 marksCalculate, showing all working, the percentage of energy in this country that is used for the transportation sector.
11. 3(a)(ii)4 marksGiven that the total energy consumed in this Caribbean country is 1.84 x 10^7 gigajoules, calculate, showing all working, the total amount of energy consumed by the residential and industrial sectors.
12. 3(b)(i)2 marksDistinguish between 'energy conservation' and 'energy efficiency'.
13. 3(b)(ii)2 marksState TWO energy conservation methods that may be used in the transportation sector.
14. 3(b)(iii)4 marksExplain what is meant by the term 'social cost of energy use'. Illustrate your response with a suitable example.
15. 3(c)6 marksDiscuss TWO environmental impacts of using fossil fuels as an energy source.
16. 4(a)3 marksElectricity is described as a secondary energy source. State ONE primary energy source and distinguish between 'primary' and 'secondary' sources of energy.
17. 4(b)3 marksAt a conference, a speaker states that "the world's socioeconomic dependency on fossil fuel combustion will make it difficult to reduce carbon dioxide emissions". Explain this statement.
18. 4(c)(i)2 marksDefine the term 'efficiency of conversion' as it refers to energy.
19. 4(c)(ii)4 marksA Caribbean family consumes 7 200 MJ of energy per year on household lighting using incandescent light bulbs. Only 432 MJ of the energy used is actually converted into light. Calculate the efficiency of conversion of…
20. 4(d)(i)1 markWhat was the price of gasoline in 2000?
21. 4(d)(ii)3 marksDescribe the OVERALL trend illustrated in the graph.
22. 4(d)(iii)4 marksThe government of this Caribbean country is considering encouraging the use of electric vehicles as a means of reducing energy spending. Some opponents of the plan say that this will not reduce energy spending, as the…
23. 5(a)5 marksDraw a bar graph on the grid provided on page 21 to illustrate the information in Table 1.
24. 5(b)6 marksUse suitable equations to explain how the use of chlorofluorocarbons (CFCs) destroys the ozone layer.
25. 5(c)3 marksState THREE health risks associated with ozone depletion.
26. 5(d)6 marksExplain how the Montreal Protocol helps to reduce ozone depletion.
27. 6(a)6 marksUse Figures 4 and 5 to discuss TWO impacts that may occur as a result of the activities carried out at the solid waste disposal site.
28. 6(b)(i)2 marksIdentify TWO critical parts that are missing from the landfill in Figure 4.
29. 6(b)(ii)3 marksRecycling is one mechanism that can reduce land pollution from landfills by reducing waste materials in the landfill. Outline THREE critical steps that are required for a recycling project to work.
30. 6(b)(iii)3 marksEvaluate whether large-scale recycling would be feasible in the Caribbean context.
31. 6(c)6 marksAn environmental conservation group recommended incineration as an alternative method for treating the hazardous waste which is brought to the site in Figure 4. State THREE advantages and THREE disadvantages of…