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

QUESTIONS

1. Which one of the following is not a function of the placenta?
   1. Supplies food from the mother's blood to the foetus.
   2. Produces hormones that stop pregnancy.
   3. Facilitates the transfer of waste products from the foetus to the mother.
   4. Allows exchange of oxygen and blood from the mother to the foetus.
2. The diagram below shows a type of human tooth.
   
   The function of the tooth is
   1. chewing and grinding.
   2. cutting and biting.
   3. gripping and tearing.
   4. grinding and cutting.
3. Which one of the following pairs of parts of the breathing system is involved in cleaning and warming the air?
   1. Nose and trachea.
   2. Nose and lungs.
   3. Diaphragm and trachea.
   4. Lungs and diaphragm.
4. Oxygenated blood from the lungs enters the heart through the
   1. aorta.
   2. pulmonary artery.
   3. venacava.
   4. pulmonary vein.
5. A weed has the following characteristics:
   1. Has thorns on the stem.
   2. Produces purple and white flowers. 
   3. Grows in semi-arid areas.
      The weed is likely to be
      1. mexican marigold.
      2. pigweed.
      3. sodom apple.
      4. black jack.
6. Which pair of plants below depends on animals for food?
   1. Mushroom and algae.
   2. Sundew and toadstool.
   3. Pitcher plant and venus fly trap.
   4. Mushroom and toadstool.
7. Grade four pupils classified crops using a simple chart as shown below. 
   
   Which one of the following pairs of plants represents X and Y respectively?
   1. Wheat and groundnuts.
   2. Peas and maize.
   3. Rice and greengrams.
   4. Groundnuts and peas.
8. Which one of the following groups consists only of field pests?
   1. Aphids, weaver birds, white ants.
   2. Weevils, white ants, stalkborers. 
   3. Weevils, aphids, weaver birds.
   4. Aphids, weaver birds, cutworms
9. Which pair of plants below stores food in the stems?
   1. Arrowroots and cassava.
   2. Cassava and carrot.
   3. Yams and arrowroots.
   4. Sugarcane and irish potato.
10. The following are characteristics of a certain vertebrate:
    1. Varying body temperature.
    2. Has internal fertilization.
    3. Breathes through lungs.
    4. Body covered with scales. 
       Which vertebrate is being described above?
       1. Hawk.
       2. Nile perch
       3. Turtle
       4. Whale
11. Which one of the following feeding adaptations of herbivores is not correct?
    1. Continuous replacement of molars and pre-molars replaces the worn out teeth due to constant grinding.
    2. The horny pad on the lower jaw holds food tightly against incisors while cutting grass.
    3. Molars and pre-molars are used for grinding, crushing and chewing.
    4. The toothless gap between incisors and pre-molars is used for turning vegetable materials for proper chewing.
12. Which pair of birds feeds on the same type of food?
    1. Hawk and sunbird.
    2. Weaver bird and hen.
    3. Flamingo and eagle.
    4. Chicken and sunbird.
13. Grade five pupils set the experiment shown below.
    
    Heat was transferred from W to Y through
    1. convection, conduction.
    2. conduction, convection.
    3. conduction, radiation.
    4. convection, radiation.
14. The following are maintenance practices carried out on simple tools. Which one of them is not carried out in all tools?
    1. Cleaning tools after use.
    2. Sharpening cutting edges.
    3. Proper use of tools. 
    4. Proper storage.
15. The diagram below was an activity carried out by Grade 6 pupils during a Science lesson.
    
    The properties of light the learners were investigating are
    1. bending of light and bouncing of light.
    2. bouncing of light and splitting of light.
    3. bending of light and absorption of light.
    4. bending of light and splitting of light.
16. Which one of the following is not a source of electricity?
    1. Solar panel.
    2. Biogas plant.
    3. Windmill generator.
    4. Bicycle dynamo.
17. Grade five pupils were using a simple seesaw to balance two objects as shown below.
    
    In order for both objects to balance,
    1. object J should be moved towards the pivot.
    2. object K should be moved away from the pivot.
    3. move the pivot towards object J.
    4. move the pivot towards object K.
18. Which one of the following is an example of a transluscent material?
    1. Mirror. 
    2. Oiled paper.
    3. Clear water.
    4. Kerosene.
19. Which one of the following is a safety measure against lightning?
    1. Carrying pointed objects when it is raining.
    2. Leaning on the wall.
    3. Avoiding open grounds when it is raining.
    4. Walking and playing in pools of water when it is raining.
20. Which one of the following does not help in reducing the force that hinders motion?
    1. Applying adhesives.
    2. Streamlining bodies. 
    3. Using rollers.
    4. Using oil and grease.
21. The diagram below shows the arrangement of load, effort and fulcrum in a simple lever.
    
    Which of the following levers has the same arrangement as the one shown above?
    1. Spade
    2. Crowbar
    3. Wheelbarrow
    4. Claw hammer.
22. Which of the following parasites destroys wool in sheep?
    1. Lice
    2. Fleas
    3. Mites
    4. Ticks
23. A patient was diagnosed with the following signs and symptoms:
    1. Swelling of the lymph glands.
    2. Skin wounds and ulcers on penis and rectum.
    3. Painful regular sore.
       Which sexually transmitted infection was he suffering from?
       1. Gonorrhoea.
       2. Syphilis
       3. HIV/AIDS
       4. Chancroid
24. Which one of the following consists only of farm animals that produce mutton?
    1. Goats and pigs. 
    2. Sheep and cows.
    3. Cows and goats.
    4. Sheep and goats.
25. A person infected with HIV/AIDS will look healthy and strong but test positive. The person is likely to be at what stage of HIV infection?
    1. Window
    2. Symptomatic.
    3. Asymptomatic.
    4. Full blown.
26. Which one of the following communicable diseases destroys the red cells?
    1. Tuberculosis.
    2. Malaria
    3. Typhoid.
    4. Bilharzia.
27. Which one of the following is the best advice to a person experiencing bleeding gums?
    1. Avoid sugary food substances. 
    2. Change the toothbrush and toothpaste regularly.
    3. Visit a dentist as soon as possible.
    4. Eat a diet rich in fruits and vegetables.
28. Which one of the following is not a sign of kwashiorkor?
    1. Swollen limbs and stomach.
    2. Crying often.
    3. Brown and loose hair.
    4. Potbelly.
29. Which of the following shows effects of bhang?
    1. Breathing problems and memory loss.
    2. Drowsiness and vomiting.
    3. Addiction and lack of sleep.
    4. Hallucination and addiction.
30. Which one of the following is the main reason why nursing mothers should feed on a diet rich in iron? In order to 
    1. get energy to breastfeed the baby.
    2. repair worn out tissues.
    3. strengthen and recover bones and teeth.
    4. replace blood lost during birth.
31. Which of the following foodstuffs does not constitute a balanced diet? 
    1. Chapati, greengrams, cabbage.
    2. Rice, meat stew, spinach.
    3. Ugali, termites, kales.
    4. Milk, bread, sausage.
32. The type of clouds which indicates fine weather has the following characteristics except
    1.  having flat bottoms.
    2. being white in colour.
    3. appearing high in the sky.
    4. looking like mountains.
33. The diagram below shows a weather instrument.
    
    Which of the following statements is not true? The
    1. scale reads from top to bottom.
    2. coloured liquid is used to enhance visibility.
    3. inner biropen tube is narrow to increase efficiency.
    4. instrument is placed in a place with free air movement.
34. Which pair of planets consists of the inner planets only?
    1. Earth and Mars.
    2. Jupiter and Neptune.
    3. Venus and Mars.
    4. Mercury and Venus.
35. Which one of the following pairs of animal feeds would provide an animal with fats, oils and vitamins?
    1. Lucerne and grass.
    2. Fishmeal and desmodium.
    3. Oats and concentrates.
    4. Rice husks and fruits.
36. Which two components of the environment are involved in the carbon cycle?
    1. Plants and water.
    2. Soil and air.
    3. Plants and animals.
    4. Air and plants.
37. Excess use of inorganic fertilizers pollutes
    1. soil only.
    2. water only.
    3. water and soil.
    4. air and water.
38. Which one of the following need not be the same when comparing how water rises in different soils?
    1. Size of cotton wool.
    2. Amount of soil.
    3. Diameter of the tubes. 
    4. Type of soil.
39. The diagram below was used as an experiment to investigate a certain property of matter.
    
    While investigating, the teacher held the bottle with both hands. The drop of ink was seen moving upwards. This shows that
    1. solids expand when heated.
    2. liquids expand when heated.
    3. gases expand when heated.
    4. both liquids and gases expand when heated.
40. A pupil mixed water, spirit, kerosene and cooking oil in one transparent bottle. How many layers were formed?
    1. 1
    2. 2
    3. 3
    4. 4
41. The diagram below shows the composition of air
    
    Which component can be used to put out a burning candle?
    
    1. W
    2. X
    3. Y
    4. Z
42. Which one of the following mixtures cannot be separated using a magnet?
    1. Small sticks and staple pins.
    2. Iron filings and maize flour.
    3. Thumb pins and steel nails.
    4. Copper filings and staple pins.
43. Two plastic lids of equal sizes are placed on water in a basin. Four small stones are placed on one lid and it sank while the other lid floated. This shows that
    1. shape affects sinking and floating.
    2. mass affects sinking and floating.
    3. material affects sinking and floating.
    4. size affects sinking and floating.
44. Which one of the following is a compound fertilizer?
    1. Muriate of potash.
    2. Ammonium sulphate nitrate.
    3. Double superphosphate. 
    4. Diammonium phosphate.
45. Pupils of Grade 4 carried out the activity shown below
    
    The pupils concluded that soil has
    1. organic matter.
    2. water.
    3. mineral particles.
    4. air.
46. Draining stagnant water can prevent the spread of
    1. cholera and typhoid.
    2. cholera and bilharzia. 
    3. typhoid and malaria.
    4. bilharzia and malaria.
47. Which one of the following statements is correct about water?
    1. Filtration makes water safe for drinking.
    2. Boiled hard water is safe for drinking.
    3. Soft water should not be boiled before drinking.
    4. Boiling makes hard water difficult to lather.
48. Which one of the following uses of water is not practised in the farm?
    1. Mixing chemicals.
    2. Washing toilets.
    3. Cleaning implements.
    4. Irrigation.
49. Mopping the floor using water left from laundry is
    1. recyling water.
    2. using water sparingly.
    3. reusing water.
    4. water harvesting.
50. The diagram below shows a type of soil erosion.
    
    This type of erosion
    1. occurs in gentle slopes.
    2. occurs without being noticed.
    3. develops from rills.
    4. can be prevented by planting grass.

MARKING SCHEME

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