SECTION B

41. The diagram below show two types of simple machines labelled A and B. Use them to answer the questions that follow.

 

a) Name each of the machines shown in the diagram.

i) A

ii) B

b) Which of the two machines would two machines would choose to use to lift the load X

c) Give a reason for your choice of machine in (b) above.

42. The diagram below shows an onion. Use it answer the questions that follow.

a) Name the part labelled B

b) What is the function of the part labelled A?

c) What type of root system does this plant have?

d) How is this plant propagated?

43. The two lists A and B below, show the diseases andthe animals they affect. Match the items in list A with those in List B correctly by completing the table below:

LIST A: LIST B:

New Castle Cattle

African swine fever Dogs

Rabies Pigs

Rinder pest Fowls

44. a) Why should water not be used to put out a fire caused by petrol?

b) Suggest any two ways in which such a fire can be put out.

c) How is a burn different from a scald?

45. How does each of the following animals protect itself against its enemies?

a) Tortoise

b) Wasp

c) Millipede

d) Chameleon

46. Give any four main causes of motor accidents in Uganda.

47. a) What advice would you give to a person wishing to construct a pit latrine at his home?

b) Give any one characteristic of a ventilated improved pit latrine.

c) Give any one reason why people should use latrines/ toilets properly.

48. a) Mention any one reason why copper wires are commonly used to distribute electricity from one point to another.

b) Why do people who work on electric wires wear rubber gloves?

c) Give any one use of each of the following:

i) a switch

ii) a fuse

49. a) Which bone joins the pelvis and the tibia?

b) Apart from movement, give any other two functions of the human skeleton.

c) What is the function of tendons in a human body?

50. a) In which way does the cutting of trees (deforestation) cause soil erosion?

b) Suggest any three methods of farming which can prevent soil erosion.

51. a) Give any one danger to a person who gets used to taking drugs of dependency.

b) Suggest any three reasons why it is not advisable to take drug bought from local shops.

52. a) What do you understand by 'dual purpose' cattle?

b) Give ant two common local breeds of cattle kept in Uganda.

c) Suggest any one reason why cattle keepers practise cross- breeding.

53. The diagram below shows the human arm holding a stone. Use it to answer the questions that follow.

a) Which muscle acts as the effort in order to lift the stone?

b) What kind of movement is possible at each of the following joints?

i) Joint A

ii) Joint B

c) Which class of lever is represented by the diagram above?

54. Use one sentence to explain the meaning of each of the following:

a) Reflection of light

b) Conduction heat

c) Transpiration

d) Condensation

55. The table below shows food stuffs prepared in different families. Study it and answer questions that follow.

 

Family A	Family B	Family C	Family D
Matooke Yams Meat Beans	Cassava Beans Posho Yams	Potatoes Posho Cassava Yams	Millet Fish Goat Milk Mangoes

a) Which family will be able to have vitamin C?

b) Which family has proteins but lack fats?

c) What food nutrients are lacking in Family A?

d) Which family has almost a balanced diet?