SCIENCE 2005

Choose the correct answer and write the letter in the correct column for each question in the answer sheet.

1. Listed below are parts of the human eye except

1. ciliary
2. retina 
3. pupil 
4. shutter
5. iris

2. The transportation of food in the body is done by:

1. blood 
2. water 
3. air
4. muscles
5. nerves

3. Chemicals used to determine whether certain food is of the type of starch is:

1. base 
2. alcohol 
3. acid
4. alkali
5. iodine

4. The vacuum in the tea bottle (Figure 1) prevents heat loss through:

1. reflection
2. conduction and radiation
3. convection and conduction
4. radiation
5. convection and radiation

5. Actual imagery is made of objects that have the character of:

1. sending light to the object
2. collecting light 
3. spreading light
4. allowing light to penetrate
5. preventing refraction of light

6. Tsetse flies cause a disease called

1. elephantiasis
2. measles
3. cholera 
4. sleeping sickness
5. malaria

7. Temporary hard dry water can be changed into soft water by

1. boiling
2. fitting
3. distilling
4. freezing
5. heating

8. The disease-causing organism shown in Figure 2 is called

1. bacteria
2. plasmodium
3. virus
4. amoeba
5. fungi

9. The magnetic field is the area

1. on a magnet
2. where magnet force is experienced
3. showing north and south poles of a magnet
4. where the magnetic force moves from north to south

10. During the dry season the trees shed their leaves:

1. to allow new leaves to grow
2. because they are old
3. to increase soil fertility
4. to allow the growth of new flowers 
5. to prevent water loss

11. High blood pressure is caused by:

1. fats 
2. arteries enlargement
3. rupturing of veins 
4. pressed veins
5. enlargement of the veins

12. It is important to take the following precautions during war except:

1. clearing the environment by cutting down trees
2. building strong houses 
3. food storage
4. preparing trenches
5. moving elsewhere

13. A balanced diet is one with the following combinations:

1. cassava, beans, eggs, milk and fruit
2. fruit, eggs, rice, groundnuts and meat
3. bread, spinach, cowpies, groundnuts and fruit 
4. maize, eggs, fish, rice and fruit
5. spinach, groundnuts, eggs, beans and fruit.

14. Planets differ from stars because planets:

1. do not rotate around the sun
2. are in gaseous state
3. have moons that rotate around them
4. have natural light
5. are bigger than stars

15. To balance the metre ruler shown in figure 3 the mass of P must be………..g.

1. 46
2. 16
3. 10 
4. 40 
5. 24

16. People who exercise should eat foods that are high in:

1. protein
2. carbohydrates
3. vitamin D 
4. vitamin C 
5. minerals

17. The letter J in Figure 4 represents a vein taking blood from the heart called:

1. vena cava
2. auricle
3. ventricle
4. vena
5. aorta

18. A block and tackle system make it easier to work because:

1. most of the force comes from the machine itself
2. increases half of the load-carrying capacity
3. helps to change the direction of force
4. many strings increase friction
5.  the load is tied at one end of the string

19. On hot days, it is not advisable to wear black because the clothes:

1. reflects light 
2. protects against heat
3. reflect heat
4. absorbs heat 
5. refracts light.

20. An electrical object that changes alternating current into direct current is called:

1. rectifier 
2. transistor
3. amplifier
4. resistor 
5. transformer