SECTION B
Questions 41 to 55 carry four marks each.
41. The following diagram shows two types of teeth in human beings.
Use it to answer the questions that follows
a) Name the type of tooth marked
i) A
ii) B
b) Give the use of each of the teeth in the diagram above.
i) A
ii) B
42. a) How does a guitar produce sound when the string is plucked?
b)How can the pitch of a guitar be changed?
c)Name one way of storing sound.
d)Give a reason why sound cannot travel through a vaccum.
43. The diagram below is of a sugarcane plant.
Use it to answer the questions that follow.
a) Name the parts marked with the letters M and L
b) What food value is got by eating sugar cane?
c) How is such a sugarcane plant propagated?
44. a) State one way in which a nursery bed is important to a farmer/.
b) Name two vegetable crops commonly grown in a nursery bed.
c) Give one wway in which a farmer can care for crops in a nursery bed.
45. a) Write one dangerous substance found in tobacco smoke.
b) Give the meaning of each of the folloewing:
i) active smoking
ii) passive smoking
c)What piece of advice can you give to smokera to help them to stop the habit?
46. The density of sand is 3 grams per cubic centimetre. Its mass is 270 grams. Find its volume.
47. a) What is First Aid?
b) List any two things found in a First Aid box.
c) State why every school should have a first Aid box.
48. Equal amounts of water were poured onto soil A and b in the diagram below:
a) From which soil did mre water drop?
b) State why more water dropped from the soil you have named in (a) above.
c) Name the type of soil on B.
d) Give one use of the type of soil in A.
49. a) Write two activities that help to promote good sanitation in a home
b) Name two diseases that may attack a family due to poor sanitation.
50. The diagram below shows a human eye.
Study it and use it to answer questions that follow.
a) Name the parts marked P and Q.
b) What is the function of the part marked R?
c) Which letter on the diagram shows where images are formed?
51. The table below shows weather instruments and what they measure. Match the items in list A with those in list B
| List A | List B |
| Wind Vane | Amount of rain |
| Barometer | Speed of wind |
| Rain guage | Amount of air pressure |
| Anemometer | Direction of wind |
a) Wind Vane
b) Barometer
c) Rain guage
d) Anemometer
52. a) What name is given to the process that turns sugar to alcohol?
b) Apart from making alcohol, state two other ways the process you have named in (a) can be useful to human beings.
c) Name the fungus used in this process.
53. a) Name the process that takes place in the air sacs of a human lung.
b) What prevents the trachea (wind pipe) from closing during breathing?
c) Give two products found in the air we breathe out.
54. a) Stae the function of each of the following structures in the human skeleton.
i) ligament
ii) tendon
b) Give one example of a long bone in a human skeleton.
c) Name one disease that affects a human skeleton.
55. a) Name the germ that causes gonorrhea.
b) Give one sign of gonorrhea in a newly born baby.
c) How does gonorrhea infection increase the chances of a person getting HIV/AIDS?
d) How can a person avoid getting gonorrhea?