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

QUESTIONS   

1. Which one of the following is not an important factor to consider when buying medicinal drugs? The
   
   1. appropriate dose.
   2. date the drug was manufactured. 
   3. doctor's prescription and instruction.
   4. date of expiry.
2. In which of the following parts of the human digestive system is a juice produced that commences the process of digestion?
   
   1. Mouth.
   2. Stomach.
   3. Small intestines.
   4. Large intestines.
3. The diagram below shows a human heart.
   
   Which of the labelled chambers pumps blood to the lungs for oxygenation?
   
   1. E
   2. F
   3. G
   4. H
4. The type of soil that has a high ability to retain water is good for
   1. building and construction.
   2. growing crops.
   3. making ribbons.
   4. mixing with cement.
5. Which one of the following statements about HIV/AIDS is correct?
   
   1. HIV/AIDS can be transmitted through mosquito bites.
   2. A person develops AIDS as soon as they contract the virus.
   3. During window stage, a blood test shows no presence of HIV.
   4. HIV/AIDS affects immoral people.
6. A weed has the following characteristics:
   1. Yellow fruits when ripe.
   2. Presence of thorn on stems, branches and leaves.
      The weed with these characteristies is
      1. wandering jew.
      2. black jack.
      3. oxalis.
      4. sodom apple.
7. Which one of the following mixtures can be separated by picking?
   1. Maize flour and iron filings.
   2. Salt and soil.
   3. Sugar and salt.
   4. Rice and sand grains.
8. Which set of crops below has a tap root system?
   1. Beans and kales.
   2. Millet and napier grass.
   3. Cassava and groundnuts.
   4. Peas and wheat.
9. Which one of the following methods is suitable for controlling all types of animal parasites?
   1. Deworming.
   2. Rotational grazing.
   3. Dipping.
   4. Spraying.
10. Which one of the following is a field pest?
    1. Weevil.
    2. Stalk borer.
    3. Rodent.
    4. Termite.
11. Which one of the following is a recreational use of water?
    1. Irrigating vegetables.
    2. Cooling engines.
    3. Watering animals.
    4. Skating on ice sheets.
12. Which one of the following is a conserved feed?
    1. Cotton seed cake.
    2. Hay.
    3. Sweet potato vines.
    4. Napier grass.
13. Which one of the following animal feeds is cut, chopped into small pieces, compressed and stored under an airtight condition as a way of preservation?
    1. Hay.
    2. Concentrates.
    3. Pasture.
    4. Silage.
14. Which one of the following is not a suitable way of conserving water? 
    1. Recycling sewage water.
    2. Reusing polluted water.
    3. Using just enough water.
    4. Harvesting rain water.
15. The diagram below shows an experiment to investigate a certain component of soil.
    
    The component being investigated is
    1. air
    2. humus.
    3. living organisms. 
    4. water
16. During interdependence in living things, animals do not depend on plants for
    1. habitat.
    2. pollination.
    3. food.
    4. medicine.
17. Which of the following teeth is never shed?
    
18.  Which one of the following types of soil erosion takes place without being noticed?
    1. Sheet erosion.
    2. Rill erosion.
    3. Splash erosion.
    4. Gulley erosion.
19. In which of the following methods of separating mixtures is only one substance recovered?
    1. Sieving.
    2. Decanting.
    3. Filtering.
    4. Evaporation.
20. The soil that cracks when dry also
    1. feels slippery when wet. 
    2. has the lowest capillarity.
    3. has the best drainage.
    4. has the largest air spaces.
21. Which one of the following tools can be maintained by applying oil and grease when in use?
    1. File.
    2. Ladder.
    3. Wheelbarrow.
    4. Hammer.
22. Which one of the following is not important when investigating the rate of solubility of substances? The
    1. the amount of solute.
    2. amount of solvent.
    3. temperature of solvent.
    4. the size of the containers.
23. The diagram below shows an experiment done to investigate a certain property of light.
    
    The aspect being investigated is 
    1. refraction.
    2. light travels in a straight line.
    3. reflection.
    4. dispersion.
24. Which one of the following weather instruments is used to show two aspects of weather?
    1. Windvane.
    2. Windsock.
    3. Air thermometer.
    4. Liquid thermometer.
25. In which one of the following circuit arrangements will the bulb not light?
    
26. People living with HIV/AIDS require the following except
    1. small quantities of food at regular intervals.
    2. plenty of exercises.
    3. sufficient sleep.
    4. large quantities of a balanced diet at once.
27. A weighing scale works in the same way as a
    1. spring balance. 
    2. beam balance.
    3. see-saw.
    4. wheelbarrow.
28. Which one of the following groups of foods is suitable for a child suffering from kwashiorkor?
    1. Ugali, milk and spinach.
    2. Mangoes, cabbages and oranges.
    3. Beans, fish and chicken.
    4. Chapati, porridge and bread.
29. Which one of the following is the brightest planet?
    1. Mars.
    2. Venus.
    3. Mercury.
    4. Jupiter.
30. Which one of the following is a use of water in the farm?
    1. Fishing.
    2. Mixing chemicals.
    3. Irrigation.
    4. Watering animals.
31. Which one of the following groups of materials are all magnetic?
    1. Aluminium, zinc.
    2. Silver, copper.
    3. Nickel, cobalt.
    4. Brass, carbon.
32. Which one of the following sexually transmitted diseases is caused by virus?
    1. Gonorrhoea.
    2. Syphilis.
    3. Chancroid.
    4. Genital herpes.
33. Which one of the following substances when mixed will form a uniform layer?
    1. Oil and spirit.
    2. Milk and spirit.
    3. Water and diesel.
    4. Paraffin and water.
34. The diagram below shows a process during reproduction in human beings.
    
    The process above takes place in the
    1. ovary.
    2. uterus.
    3. oviduct.
    4. vagina.
35. Which one of the following parasites is found in the small intestines of sheep and goats?
    1. Roundworms.
    2. Flukes.
    3. Hookworms.
    4. Lungworms.
36. Which part of a flower exposes it to the agents of pollination?
    1. Petals.
    2. Sepals.
    3. Filaments.
    4. Stalk.
37. Which pair of crops below will provide similar nutrients when taken?
    1. Cereals and oil crops.
    2. Legumes and fibre crops.
    3. Fruits and tubers.
    4. Beverages and legumes.
38. Below is a food chain in a certain habitat:
    Maize → hens → mongoose → wild dog
    Which one of the following feeding organisms will belong to the same group as a rat?
    1. Maize.
    2. Hens.
    3. Mongoose.
    4. Wild dog.
39. Which one of the following processes takes place immediately after ovulating?
    1. Implantation.
    2. Reproduction.
    3. Fusion.
    4. Menstruation.
40. Which one of the following shows the correct order of the flow of urine in the human body?
    1. Bladder → urethra → ureter
    2. Urethra → ureter → urethra
    3. Ureter → urethra → bladder
    4. Ureter → bladder → urethra
41. The diagram below shows a simple home made filter.
    
    The part labelled J represents
    
    1. pebbles.
    2. coarse sand.
    3. charcoal.
    4. fine sand.
42. When conducting an experiment on soil drainage, which one of the following need not be the same?
    1. Amount of water.
    2. Amount of soil.
    3. Type of soil.
    4. Size of funnels.
43. The following are the functions of the placenta except
    1. providing food for the growing embryo. 
    2. allowing exchange of oxygen and carbondioxide.
    3. facilitating transfer of digested food.
    4. facilitating transfer of waste products.
44. The diagram below shows the female reproductive system.
    
    Which of the labelled parts produces sex cells?
    1. P
    2. Q
    3. R
    4. S
45. Which one of the following excretory products is removed by all the excretory organs?
    1. Carbondioxide.
    2. Salts.
    3. Urea.
    4. Excess water.
46. When making a liquid thermometer, a narrow tube is used in order to
    1. read easily.
    2. make the liquid expand faster.
    3. make smaller changes in temperature.
    4. reduce evaporation.
47. The chart below shows a simple classification of plants.
    
    Which one of the following correctly shows examples of the plants labelled in the chart?
    

    	W	X	Y
    A.	Maize	fern	cactus
    B.	Beans	algae	toadstool
    C.	Cactus	acacia	mushroom
    D.	Banana	cactus	puffball

48. The purpose of adding wood ash when preparing compost manure is to
    1. speed up the rate of decay.
    2. introduce decomposers.
    3. ensure uniform decay.
    4. supply additional nutrients.
49. Heat from the sun reaches the earth's surface through
    1. conduction.
    2. convection.
    3. radiation.
    4. heating.
50. Which one of the following substances can evaporate or freeze depending on temperature change?
    1. Steam.
    2. Ice.
    3. Water.
    4. Oxygen.

MARKING SCHEME

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