Science Questions and Answers - Class 8 Mid Term Exams Term 2 2023 Set 1

QUESTION 

1. Which one of the following is not a correct statement about the process of birth in human beings?
   1. The umblical cord is tied after cutting to prevent the loss of blood
   2. The birth canal enlarges to allow the passage of foetus
   3. Contraction of the uterine wall push the foetus through the cervix
   4. Amnion sac breaks and release amniotic fluid
2. Which one of the following components of blood is correctly matched with its function?
   

   	Blood component	Function
   A.	White blood cells	Heat distribution.
   B.	Plasma	Transport oxygen
   C.	Red blood cells	Transport iron
   D.	Platelets	Blood clotting

3. The diagram below represents the human digestive system.
   
   Which one of the parts labelled W, X, Y and Z is correctly matched with its functions?
   

   	Part	Function
   A.	W	Digestion of food
   B.	X	Production of bile
   C.	Y	Absorption of water
   D.	Z	Absorption of digested food

4. The diagram below represents a certain type of human tooth. The function of the tooth is
   
   1. Grinding and tearing
   2. Crushing and biting
   3. Tearing and gripping
   4. Grinding and crushing
5. Which one of the following changes takes place during adolescence in boys only?
   1. Pimples on face
   2. Releasing of sex cells
   3. Fast body growth
   4. Shoulder and chest become broader
6. Which one of the following pairs of diseases can be prevented by adequate minerals in the diet?
   1. Rickets and anaemia
   2. Marasmus and kwashiorkor
   3. Rickets and kwashiorkor
   4. Anaemia and marasmus
7. The diagram below shows a maize grain.
   
   Which one of the labelled parts is correctly matched with its function?
   

   	Part	Function
   A.	P	Stores food
   B.	Q	Protects the inner part
   C.	R	Develops into a root
   D.	S	Develops into a shoot

8. The following are some adaptations of plants that grow in wet areas except
   1. Flexible stems
   2. Leaves with waxy upper surface 
   3. Thick leaf cuticle
   4. Broad leaves
9. A food chain in a grassland is shown below.
   Grass → Grasshoopers → Frogs → Snakes → Secretary birds
   Which one of the following would mostly likely happen immeadiately all frogs are killed?
   1. Grasshoopers would decrease in number
   2. The amount of grass would increase
   3. Snake would increase
   4. Grasshoopers would increase in number
10. The following are signs and symptoms of a certain water borne disease.
    1. Skin
    2. Vomiting.
    3. Diarrhoea
       The disease with the above signs and symptoms is likely to be
       1. Typhoid
       2. Cholera
       3. Malaria
       4. Bilhazia
11. Making fountains is a common use of water except
    1. for recreation
    2. at home
    3. in industries
    4. for transport
12. The following are ways of polluting river water except
    1. Cultivating along river bank
    2. Spraying of crops with pesticides
    3. Releasing treated sewage water into the river
    4. Use of fertilizers in farming
13. The best way of getting rid of metal cans. waste papers broken glass and empty plastics is
    1. Despositing them in pit latrines
    2. Recycling them
    3. Reusing them
    4. Reducing them
14. Which one of the following is not a communicable disease?
    1. Malaria
    2. Tuberculosis
    3. Whooping cough
    4. Cholera
15. The following are effects of refraction except?
    1. Formation of images on a mirror
    2. Ruler appearing bent in water
    3. Swimming pool appearing shallow
    4. Coin appearing raised in water
16. Adolescents can affectively control AIDS by
    1. being faithful
    2. having one partner
    3. abstinence
    4. using condoms
17. The chart below represents a simple classification of plants.
    
    Which plants are represented by P and Q
    

    	P	Q
    A.	Maize	Banana
    B.	Banana	Grass
    C.	Bean	Mucor
    D.	Conifers	Liverworts

18. When a hipopotamus basks in the sun, its
    1. body temperature rises and then falls 
    2. body temperature remains the same
    3. body temperature rises
    4. body temperature falls
19. All the following should be done when handling chemicals at home except
    1. Labelling all chemical containers
    2. Keeping chemicals away from children 
    3. Storing chemicals away from food
    4. Spraying chemicals against the wind directions
20. The diagram below shows processes W.- X, Y and Z which bring about change of state.
    
    Which two processes involve loss of heat to the sorrounding?
    1. Y and Z
    2. W and Z
    3. W and X
    4. X and Y
21. The following are effects of drug abuse:
    1. Impaired judgements
    2. Truancy
    3. Addiction
    4. Rape
    5. Marital conflicts
       Which one of them are all social effects?
       1. (ii), (iii), (iv)
       2. (ii), (iii), (v)
       3. (ii), (iv), (v)
       4. (i), (iv), (v)
22. The diagram below represents the beak of a certain bird. The bird is most likely to feed on. B. Grains
    1. Flesh
    2. Grains
    3. Nector
    4. Insects
23. The following are characteristics of a certain type of cloud except
    1. appears low in the sky
    2. is dark grey in colour
    3. rain bearing
    4. has a flat base
24. Which one of the following materials is correctly matched as good and poor
    

    	Good conductor	Poor conductor
    A.	Plastic	Glass
    B.	Rubber	Iron
    C.	Steel	Wood
    D.	Copper	Aluminium

25. The diagram below represents a weather instrument that was constructed by pupils.
    
    The mistake made in the construction was
    1. Using coloured water
    2. Placement of the scale
    3. Closing the cork tightly
    4. Using a narrow tube
26. Which one off the following is not a reason for proper storage of tools?
    1. To make them clean
    2. For tidiness in the house
    3. To prevent them from damage
    4. To prevent accidents
27. Which one of the following is an example of force?
    1. Effort
    2. Weight
    3. Push
    4. Energy
28. Food poisoning is mainly caused by
    1. micro organism and chemicals
    2. Chemicals and expiry date
    3. Micro organism and animals
    4. Bacteria and insects
29. Which one of the following methods of preserving food is heating necessary?
    1. Use of honey
    2. Salting
    3. Use of ash
    4. Canning
30. A group of pupils wanted to investigate drainage of water in different soils. Which one of the following materials was not needed?
    1. Equal amount of soils
    2. Identical tubes
    3. Equal size of cotton wool
    4. Identical funnels
31. Which one of the following is not an immediate sign of ill health in livestock?
    1. Blood in stool
    2. Rough coat
    3. Loss of weight
    4. Coughing
32. The gas used in fire extinguishers is also
    1. used by plants to make proteins
    2. used in germination
    3. used in making bulbs
    4. used in preserving soft drinks
33. Which form of energy is contained in kerosene, lemon and a battery before use?
    1. Heat energy
    2. Chemical energy
    3. Electrical energy
    4. Light energy
34. Which of the following components of the soil does not change when soil is heated?
    1. Mineral salts
    2. Organic matter
    3. Water
    4. Air
35. The following are ways of controlling internal liverstock parasites except.
    1. Rotational grazing
    2. Drenching
    3. De-worming
    4. Using acaracides
36. Which one of the following components is found in all environments?
    1. Soil
    2. Air
    3. Water
    4. Plants
37. When preparing compost manure, it is advisable to turn the compost materials three to four times in order to
    1. allow fast water penetration in the compost heap
    2. make it more attractive
    3. reduce friction on the road
    4. make it last longer
38. The diagram below shows a vehicle wheel.
    
    The main reason for the wheel having the structures labelled M is to
    1. increase grip on the road
    2. make it more attractive
    3. reduce friction on the road
    4. make it last longer
39. Which one of the following consist of magnetic materials only?
    1. steel, cobolt, aluminium
    2. copper, aluminium, tin
    3. iron, copper, tin
    4. steel, cobalt, iron
40. In an activity, two pupils of different masses balanced on a see-saw. Which one of the following statements about the position of the pupils on the see-saw is correct?
    1. Both pupils sat far away from the pivot 
    2. The lighter pupil sat closer to the pivot while the heavier pupil sat farther away from the pivot
    3. Both pupils sat close to the pivot
    4. The lighter pupil sat farther away from the pivot while the heavier pupil sat closer to the pivot
41. Which one of the following groups consists only on food crops?
    1. Bananas, sorghum, tea
    2. Sorghum, bananas, arrowroots
    3. Tea, sunflower, yams
    4. Coffee, arrowroots, green grams
42. Which one of the following pairs consists only of conserved animal feeds?
    1. Maize germ and bran
    2. Hay and maize germ
    3. Brain and silage
    4. Silage and hay
43. In an activity, pupils were asked to listen as an aircraft was flying overhead their classroom. This was to investigate
    1. effects of sound pollution
    2. amplification of sound
    3. meaning of special sounds
    4. direction of sound
44. The following are factors to consider when modelling the solar system using clay except
    1. size of the balls
    2. number of balls
    3. distance between balls
    4. mass of balls
45. To protect electricity users from being electrocuted it is advisable to
    1. avoid touching electric sockets
    2. insulate exposed electric wires 
    3. store electrical appliances in a safe place
    4. fit tall buildings with lighting arresters
46. Which one of the following is the last step when separating a mixture of soil and sugar?
    1. Evaporating
    2. Filtering
    3. Dissolving
    4. Decanting
47. Which one of the following pairs consists only of artificial sources of light?
    1. Glow worms and sun
    2. sky light and electricity
    3. gas lamp and electricity
    4. fire flies and gas lamps
48. Which of the following types of erosion cannot be cobtrolled by planting cover crops?
    1. Sheet erosion
    2. Rill erosion
    3. Gulley erosion
    4. Splash erosion
49. Which one of the following is a definite characteristics of milk and water vapour?
    1. Mass only
    2. Weight and volume
    3. Volume and mass
    4. Size and shape
50. The amount of matter in an object is best described as
    1. Volume
    2. Mass
    3. Weight
    4. Force

MARKING SCHEME

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