21. The diagram below shows a chalk box. Find its volume.

22. State one of the characteristics of the objects that float on water.

23. Why is the moon not regarded as a star?

Study the animals given in list A and those in B. Use it to answer question 24 and 25.

A: FISH, BIRD, FROG

B: MAN, WHALE, BAT

24. How do animals in list A differ from those in B as regards their reproduction?

25. How are animals in List A similar to those in List B?

26. What is the source of energy in thermal electricity?

27. Give one way in which friction is useful to a person riding a bicycle.

28. Josephine could only read noted when the book was at a distance of not more than one metre from her eyes. What advice would you give Josephine?

29. In the diagram, Moses is pulling a load along the ground surface as shown below.

How could Moses make his work easier?

30. What is the First Aid for high fever?

31. In terms of machines, how is the hammer similar to the human arm?

32. What should be done to a clinical thermometer before taking the temperature of a person?

33. How can a child acquire artificial immunity?

34. How does a vent help to reduce smell in a VIP latrine?

35. What is one possible danger of buying drugs from a local shops or markets?

36. What is near drowning?

37. What feature enables a housefly to spread germs?

38. Why is budgeting in a family useful?

39. Give one example where bacteria are useful to man.

40. Draw a diagram to show self pollution in a flower.