CSEC Integrated Science · 2009 · Paper 2

59 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)2 marksName each of the structures labelled A, B, C and D.
2. 1(b)2 marksOutline two differences between the flowering plant and the reproducing unicellular organism shown in the figures.
3. 1(c)(i)2 marksIdentify in Figure 1 two structures that are associated with sexual reproduction.
4. 1(c)(ii)1 markIdentify in Figure 1 one structure that is associated with asexual reproduction.
5. 1(d)(i)1 markWhich of the labelled parts of the flowering plant should the farmer use?
6. 1(d)(ii)1 markGive a reason for your choice of plant part in (d)(i).
7. 1(d)(iii)2 marksState one advantage and one disadvantage of cultivating genetically identical trees.
8. 1(e)(i)2 marksSuggest two likely reasons for the decrease in the population of organisms.
9. 1(e)(ii)1 markWhat is the likely effect on the population of the organisms if the temperature of the flask is raised to 80 °C?
10. 1(e)(iii)1 markGive one reason for your answer in (e)(ii).
11. 2(a)2 marksName two other plants that Ms Molly could grow to increase the variety of nutrients available to her family.
12. 2(b)1 markIdentify the major nutrient provided by one of the plants named in (a).
13. 2(c)2 marksState two nutrients that cows may provide.
14. 2(d)(i)4 marksComplete Table 1 by placing a tick in the appropriate cell to select the two most important criteria for: a) the five-year-old grandchild, and b) the seventy-five-year-old brother.
15. 2(d)(ii)4 marksGive two reasons for each of your choices in (d)(i) for the child and the adult.
16. 2(e)(i)1 markSuggest one precaution she must take while preparing or serving meals to her family.
17. 2(e)(ii)1 markGive one reason for the precaution suggested in (e)(i).
18. 3(a)(i)1 markState one difference between a clinical thermometer and a laboratory thermometer.
19. 3(a)(ii)2 marksState two main processes that occur when rubbing alcohol is used to lower the baby's temperature.
20. 3(a)(iii)1 markSuggest one reason for the baby's temperature rising again.
21. 3(b)(i)1 markWhich of the metals expands the least when heated?
22. 3(b)(ii)1 markWhich combination of metals cannot be used in a bi-metallic strip?
23. 3(b)(iii)1 markGive the reason for your answer to (b)(ii).
24. 3(b)(iv)1 markCircle which combination of metals will bend the most in a bi-metallic strip: A and B, A and D, or B and D.
25. 3(b)(v)1 markGive the reason for your answer to (b)(iv).
26. 3(c)(i)2 marksGive two reasons for the inspector's comment regarding poor ventilation.
27. 3(c)(ii)2 marksSuggest two likely effects of the poor ventilation in the office.
28. 3(c)(iii)2 marksRecommend two actions that could be taken to improve ventilation and air quality in the office.
29. 4(a)(i)1 markList the physical states of the materials usually present in Section A.
30. 4(a)(ii)2 marksName the process occurring in each of the labelled sections: B and C.
31. 4(a)(iii)1 markThe distillation flask contains liquids W (b.p. 180 °C), X (b.p. 60 °C) and Y (b.p. 100 °C). Which will be collected in the receiver first?
32. 4(b)(i)1 markState one major environmental concern associated with using fossil fuels.
33. 4(b)(ii)1 markState one reason which may limit the use of solar energy in the Caribbean.
34. 4(c)(i)1 markWhich method of heat transfer is most important for this solar water heater to operate?
35. 4(c)(ii)1 markWhy did the builder paint the exterior of the water heater black?
36. 4(c)(iii)1 markWould you expect to find hotter water at the top or at the bottom of the heater?
37. 4(c)(iv)1 markGive one reason for your answer to (c)(iii).
38. 4(c)(v)a)1 markShould the covering for the water heater be made from metal, transparent glass or plastic?
39. 4(c)(v)b)1 markGive one reason for your choice of covering material in (v) a).
40. 4(c)(vi)1 markSuggest one appropriate use of the water from the solar water heater.
41. 4(c)(vii)2 marksSuggest two reasons for using a solar water heater instead of a gas heater or an electric heater.
42. 5(a)(i)1 markState the angle of incidence in the diagram.
43. 5(a)(ii)2 marksIdentify which line (AB, BC, BD, or BE) represents: a) the normal, and b) the reflected ray.
44. 5(b)(i)2 marksWhat colour would John observe in Figure 8 (a)? Give a reason for your answer.
45. 5(b)(ii)2 marksWhat colour would John observe in Figure 8 (b)? Give a reason for your answer.
46. 5(c)1 markState one difference between light and sound.
47. 5(d)(i)1 markState a suitable hypothesis for this investigation.
48. 5(d)(ii)2 marksName two variables that may be controlled to make this a fair investigation.
49. 5(d)(iii)2 marksConstruct a table to show how you would record your results.
50. 5(d)(iv)2 marksOutline the procedures that you would follow to carry out this test.
51. 6(a)1 markDefine the term 'centre of gravity'.
52. 6(b)4 marksDescribe a method of finding the centre of gravity of the piece of cardboard.
53. 6(c)1 markLabel with an X the likely position of the centre of gravity of the cardboard shown in Figure 9.
54. 6(d)2 marksSuggest a reason why it is easier to carry two market bags of equal mass than to carry one bag with the combined mass.
55. 6(e)(i)2 marksDistinguish between 'stable equilibrium' and 'unstable equilibrium'.
56. 6(e)(ii)1 markWhat problems would the driver of the truck encounter when taking a left turn at high speed?
57. 6(e)(iii)1 markGive a reason for your answer to (e)(ii).
58. 6(e)(iv)1 markWhat is the likely consequence when the truck is moving after all paper towels have been offloaded from the right side?
59. 6(e)(v)2 marksSuggest two actions the driver of the truck can take to prevent these problems.