SECTION B

Question 41 to 55 carry four marks each.

41. John fell off a bicycle and broke his thigh bone.

a) Name the injury which John got.

b) State any two ways in which John can be given First Aid.

c) What is the importance of giving First Aid to a person like John?

42. The diagram below shows a human heart. Use it to answer the questions that follow.

a) What is the function of the part marked with letter Y?

b) Give the difference between the blood in the regions marked with letter A and B.

c) Put arrows on the short lines marked with numbers 1 and 2 to show the direction of the movement of blood.

43. a) Name any two parts of a plant which provide human beings with food.

b) Give any two in which plants benefit from animals.

44. Below is a list of activities carried out by people in the environment. Use it list to answer the questions that follow.

- Fishing

- Producing a lot of smoke in the factories

- Draining swamps

- Throwing polythene bags on the soil

- Crop rotation

a) Which activity is likely to decrease the amount of rainfall?

b) Which activity is likely to spoil the fertility of the soil?

c) Which activity is good for controlling crop diseases?

d) Which activity is likely to cause pollution of the atmosphere?

45. The table below show s different groups of vertebrates. Use it to answer the questions that follow.

A	B	C
Birds	Mammals	Amphibians

 

a) To which group of vertebrates does each of the following belong?

b) Give any one way in which the reproduction of animals in group B is different from that of animals in group C.

c) Give any one other group of vertebrates which is missing from the table.

46. a) What is the importance of taking children for immunization?

b) Which vaccine is given to the child in the mouth at birth?

c) Give any two ways the child's health card is important to the parents.

47. a) Give any two reasons why a mushroom is not a plant.

b) Give any two plants that reproduce in the same way like a mushroom.

48. The diagram below shows wooden poles with electricity wires. Use it to answer the questions that follow.

 

a) State any one reason why wires are loosely fixed.

b) What would happen to the wires if they were tightly fixed?

c) Give any one reason why wooden poles are usually used to carry electricity.

d) Why are the wires placed very high up?

49. a) Give any one part of the human body where each of the following joints is found.

i) Ball and Socket joint

ii) Hinge joint

iii) Gliding joint

b) Which one of the above joints can make an all round movement?

50. a) What is a chemical change?

b) Give any one example of a chemical change.

c) When water changes to ice the process is called freezing. Name the process in each of the following changes:

i. Ice to water

ii. Steam to water

51. a) Give any one reason why people include proteins in the diet.

b) What is importance of fruits in a diet?

c) State any two ways of protecting children against malnutrition.

52. The list below gives some of the methods farmers use to control soil erosion. Use it to answer the questions that follow.

- Terracing

- Planting trees

- Contour ploughing

- Mulching

Which two of the methods given above are best for:

a) Land with a gentle slope?

b) Land with a steep slope?

53. Give any one sign you would see on cattle suffering from the following diseases:

a) Anthrax

b) East coast Fever

c) Nagana

d) Foot and Mouth

54. The diagram below shows two simple machines. Use it to answer questions that follow.

a) Name the machine with the letter A

b) State the class of lever to which each of the above machines belongs.

i) Machine A

ii) Machine B

c) Give any one example of a machine which works in the same way as the machine marked with letter B.

55. The diagram shows a rabbit house. Use it to answer the questions that follow.

a) Give any one reason why the rabbit house is raised above the ground.

b) Give any two reasons why wire mesh is used in building a rabbit.

c) State any one thing that should be provided to the rabbit in the house.