Science Questions and Answers - Class 8 End Term Exams Term 2 2023 Set 2

1. Which one of the following effects of drugs is correctly matched with its causes?
   

   Effect	Cause
   A. Drowsiness-  B. Cirrhosis -  C. Addiction -   D. Lung cancer-	Injection of cocaine   Smoking of cigarettes   Chewing of miraa   Inhaling of cobblers

2. The main functions of white blood cells is to;
   1. fight disease-causing germs
   2. help in transportation of digested food
   3. carry oxygen from the lungs to the body
   4. help in clotting of blood
3. The diagram below represents a set-up used by pupils to investigate a certain property of soil.
   
   The property of soil investigated is;
   1. drainage
   2. fertility
   3. capillarity
   4. téxture
4. The best soil for modelling has;
   1. high water retention
   2. low capillarity
   3. coarse particles
   4. high drainage
5. Which one of the following is a compound fertilizer?
   1. Calcilum Ammonium Nitrate
   2. Suphate of Ammonia
   3. Muriate of potash
   4. Diammonium phosphate
6. Which one of the following is not a way of conserving water?
   1. Mulching
   2. using laundry water to clean a house 
   3. Washing vehicles in a water body
   4. Recycling
7. Which one of the following statements is not true about environment?
   1. It consists of the living things only
   2. Plants and animals produce carbondioxide.
   3. Water, air and soil make the non-living component.
   4. It refers to all things surrounding a living thing.
8. Which one of the following is the best way of managing domestic waste in urban centres?
   1. Reducing its generation.
   2. Making compost manure.
   3. Onsite treatment.
   4. Using local authority services.
9. Plants Q, R, S and T had the following characteristics:
   Q-Needle-like leaves, thick cuticles
   R-Flexible stem, floating leaves
   T-Many stomata, waxy leaves.
   Which pair of plants are adapted to the same habitat?
   1. Q and R
   2. Q and S
   3. O and T
   4. S and R
10. The force that opposes motion can be increased in the following ways except;
    1. making treads on wheels 
    2. streamlining bodies
    3. Spreading coarse materials on road 
    4. Making the surface rough.
11. Which one of the following uses of heat is not correctly matched with its use?
    

    Source of heat	Use
    A. Gas  B. Sun  C. Fire  D. Electricity	Ironing   Drying  Warming   Cooking

12. The following materials were collected by pupils during a Science practical lesson.
    1. Water in a basin.
    2. A clean mirror.
    3. A white board.
       Which aspect of light were they investigating?
       1. Dispersion of light
       2. Refraction of light
       3. Reflection of light 
       4. How light travels
13. Which one of the following best explains why people should not board matatus that play loud music?
    1. Makes communication difficult
    2. Loud sound may damage eardrums 
    3. Loud sound may cause headache 
    4. Loud sound may cause hallucinations
14. The diagram below shows two pupils playing on a see-saw.
    
    In order to balance;
    1. Mark should move closer to F
    2. John should move closer to F 
    3. both should sit at equal distance from F
    4. Mark should move further away from F.
15. Which one of the following groups of materials consists only of good conductors of heat?
    1. Plastic, glass, copper
    2. Iron, silver, plastic:
    3. Glass, copper, gold
    4. Iron, gold, silver
16. Which method of controlling weeds would a farmer apply in a nursery bed?
    1. Uprooting
    2. Applying herbicides
    3. Digging out
    4. Slashing
17. Which one of the following groups consists only of useful small animals?
    1. Termites, butterfly, locust
    2. Bees, earthworms, locust
    3. Termites, bees, earthworms
    4. Bees, butterflies, earthworms
18. The following are characteristics of a certain vertebrates: 
    1. Presence of teeth.
    2. Presence of gills.
    3. Presence of tails.
    4. Presence of fins
    5. Presence of scales.
       Which of the characteristics belong to fish only?
       1. (i) and (ii)
       2. (ii) and (iv)
       3. (iii) and (iv)
       4. (iii) and (v)
19. The following are rotational methods of grazing except;
    1. tethering
    2. zero grazing
    3. paddocking
    4. strip grazing
20. Domestic animals are sprayed to control the following except;
    1. fleas
    2. tapeworm
    3. ticks
    4. lice
21. A pupil intended to cut a piece of timber to repair a desk. The most appropriate tool for the work would be:
    1. hammer
    2. panga 
    3. knife
    4. saw.
22. A pupil had the following signs and symptoms.
    1. Skin rash.
    2. Blood in urine.
    3. Slight diarrhoea.
       The pupil was most likely to be suffering from;
       1. bilharzia
       2. cholera
       3. typhoid
       4. malaria.
23. The teeth of carnivores are well spaced to;
    1. enable them to penetrate into flesh
    2. enable them to slice and crack bones easily
    3. prevent flesh from getting stuck between them
    4. enable them to catch and hold prey.
24. A small stone sinks in water while a big log of wood floats. This is because of the difference in;
    1. shape
    2. weight
    3. material
    4. size.
25. Weight is measured in;
    1. newtons
    2. kilograms
    3. volume
    4. kelvin
26. Which one of the following methods of food preservation removes water from the food?
    1. Use of honey
    2. Salting
    3. Freezing
    4. Use of low temperature.
27. Which one of the following can be transmitted from an infected animal to a healthy person?
    1. Malaria
    2. Anaemia
    3. Tuberculosis 
    4. Flea.
28. Which one of the following should be avoided when it is raining?
    1. Touching switches with wet hands.
    2. Overloading sockets.
    3. Leaning against walls.
    4. Putting on shoes with thick rubber soles.
29. The following are products obtained from goats except;
    1. milk
    2. mutton
    3. wool
    4. mohair.
30. To stop a moving object, the force applied should be;
    1. equal and in the opposite direction
    2. more and in the same direction
    3. less and in the opposite direction
    4. more and in the opposite direction.
31. In the human digestive system, absorption takes place in all the following parts except one. Which one?
    1. Stomach
    2. Mouth
    3. Ileum
    4. Colon.
32. Three of the following are reasons for H.I.V testing. Which one is not?
    1. To overcome fear
    2. To campaign for the spread of H.I.V
    3. To change behaviour
    4. To plan for the future one's dependants.
33. Pupils of Milimani primary school made a weather instrument using the following materials.
    1. Thin walled glass bottle
    2. Biro pen tube.
    3. Manila paper.
    4. Coloured water in a basin.
    5. Stand.
    6. Rubber band.
       Which principle does the instrument they made work?
       1. Air in motion
       2. Liquid occupy space
       3. Liquid rise in straw
       4. Matter expands on heating.
34. The diagram below shows a certain part of a flower.
    
    Germination of pollen grains takes place in the part labelled;
    1. X
    2. Z
    3. Y
    4. W
35. Which one of the following pairs of processes both leads to the loss of heat to the surrounding?
    1. Melting and freezing.
    2. Melting and evaporation. 
    3. Condensation and melting.
    4. Freezing and condensation.
36. The diagram below shows the beak of a certain bird.
    
    The bird is not likely to be a;
    1. vulture
    2. hawk
    3. secretary bird
    4. swan.
37. Which one shows all materials that cannot allow magnetism to pass through them?
    1. Iron, steel, nickel.
    2. Iron, copper, steel.
    3. Copper, steel, nickel.
    4. Alluminium, copper, silver.
38. The following are all sources of current electricity except one. Which one?
    1. Car battery
    2. Geothermal turbines
    3. Dynamo
    4. Solar heater.
39. Which one of the following is the functions of dietary fibre found in fruits and vegetables?
    1. Provides vitamins to the body.
    2. Helps in the movement of food in the alimentary canal.
    3. Provides energy to the body.
    4. Helps in the absorption.
40. Infants needs to be breastfed for at least six months mainly because breast milk;
    1. makes them naturally more resistant to infections
    2. boosts their energy
    3. is readily available
    4. strengthens their bond with the mother.
41. The following are causes of water pollution. Which one is not?
    1. Soil particles.
    2. Controlled use of fertilizers.
    3. Untreated sewage.
    4. Human wastes.
42. The main reason why some plants that grow in dry areas have thorns is to;
    1. reduce water loss
    2. protect them from brousers
    3. store extra water
    4. to make food.
43. The following are all pastures except;
    1. nappier grass
    2. desmodium
    3. kikuyu grass
    4. rhodes grass
44. The toothless gap found on the front upper jaw is used for;
    1. turning of food for proper chewing
    2. crushing and grinding food 
    3. rolling food in the mouth
    4. pressing and cutting grass while feeding.
45. The diagram below shows a type of interdependence.
    
    The type of interdependence shown is; 
    1. shelter
    2. food
    3. support
    4. habitat 
46. Which one of the following is not a function of the part labelled T on the diagram below?
    
    1. Entry of air
    2. Emergence of plumule
    3. Emergence of radicle
    4. Entry of water.
47. The percentage of air that excludes oxygen during welding of metals occupy; 
    1. 0.03%
    2. 0.97%
    3. 21%
    4. 78%
48. The best method of controlling human. intestinal worms is;
    1. deworming
    2. wearing protective gear
    3. proper cooking of food
    4. proper sanitation.
49. The diagram below shows a certain instrument.
    
    Which is the function of the part labelled X?
    1. Allows contraction and expansion
    2. Prevents bursting of the glass.
    3. Expanding the mercury.
    4. Allows the doctor to read th temperature.
50. All thermometers have a scale on them called the;
    1. degree scale
    2. celsius scale
    3. thermometer scale
    4. temperature scale.

MARKING SCHEME

1. C
2. A
3. C
4. A
5. D
6. C
7. A
8. D
9. B
10. B
11. A
12. A
13. B
14. A
15. D
16. A
17. D
18. B
19. B
20. B
21. D
22. A
23. C
24. C
25. A
26. B
27. C
28. C
29. C
30. A
31. B
32. B
33. D
34. A
35. D
36. D
37. A
38. D
39. B
40. A
41. B
42. A
43. A
44. D
45. D
46. B
47. B
48. D
49. D
50. D