Friday, 14 April 2023 13:30

Science Questions and Answers - Class 8 End Term Exams Term 1 2023 Set 5

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QUESTIONS

  1. The function of the large intestine in the human digestive system is to
    1. absorb water and minerals
    2. store food and wastes
    3. produce intestinal juice
    4. store undigested food
  2. Food nutrients and oxygen are transported to the foetus by the
    1. amniotic fluid
    2. umbilical cord
    3. uterine wall
    4. placenta
  3. Which one of the following pairs of animal feeds provide animals with energy?
    1. Sunflower heads and salt licks
    2. Wheat husks and bone meal
    3. Sunflower seeds and maize germ
    4. Maize germ and bone meal
  4. The following are ways of conserving water except
    1. harvesting rain water
    2. filtering dirty water
    3. recycling water
    4. reusing water
  5. The diagram below show changes of state of matter.
    5 adadad
    Which two processes require absorption of heat from surrounding?
    1. i and ii
    2. iii and iv
    3. ii and iv
    4. i and iii
  6. Which one of the following consists of matter that has a definite mass, indefinite shape and indefinite volume?
    1. Toothpaste, grease and water
    2. Air, honey and plastic
    3. Oxygen, air and smoke
    4. Soil, sugar and chalk dust
  7. A certain sexually transmitted infections has the following signs and symptoms
    1. burning sensation
    2. discharge of smelling pus
    3. pain in the lower abdomen in females
    4. blindness in babies
      The disease is likely to be
      1. gonorrhea
      2. syphilis
      3. chancroid
      4. genital herpes
  8. Which one of the following statements about HIV and AIDS is true?
    1. It can be treated by vaccination
    2. It is prevented by proper hygiene
    3. During window stage one tests positive
    4. Spreads through deep kissing
  9. On a seesaw, a small boy can lift a big boy when
    1. the small boy stands on it
    2. big boy moves closer to the pivot
    3. both boys to sit equal distances
    4. the two boys to interchange positions
  10. Which one of the following steps of separating mixtures can best be used to separate a mixture of husks, sand and salt?
    1. Winnowing, dissolving, filtering and evaporating
    2. Magnetism, sieving, dissolving and evaporating
    3. Picking, sieving, dissolving and evaporating
    4. Dissolving, filtering and evaporating
  11. Which one of the following is not an advantage of using manures and fertilizers? 
    1. Rapid growth of weeds
    2. High crop yields
    3. Quick ripening of fruits
    4. Increased size of seeds and grains
  12. The following statements are all correct about current electricity except
    1. clectricity can be stored
    2. water and graphite are both good conductors of electricity
    3. a fuse is a safety device that prevents overheating of wires
    4. all tall buildings should be fitted with copper arresters
  13. The following materials can be used to increase the force that acts between two surfaces except
    1. coarse sand
    2. marbles
    3. sawdust
    4. murram
  14. Which one of the following reasons for maintaining simple tools is only for efficiency?
    1. Proper storage of tools
    2. Proper use of tools
    3. Sharpening cutting tools
    4. Cleaning tools after use
  15. Which one of the following sources of water pollution is likely to increase the growth of weeds in a nearby river?
    1. Acid rain
    2. Excessive use of farm chemicals
    3. Oil spills
    4. Floods
  16. Which one of the following effects of drugs are correctly grouped?
    1. Addiction, withdrawals and truancy
    2. Rape, school dropout and death
    3. Violence, fits and marital conflicts
    4. Impaired judgement, withdrawal and fits
  17. The following are stages of parturition, but not in correct order
    1. dilation of cervix and birth canal 
    2. tying and cutting of umbilical cord 
    3. contraction of uterine wall
    4. amnion sac burst
    5. expelling of afterbirth
    6. pushing of the baby
      Which of the following is the correct order of the stages?
      1. iii, i, iv, vi, ii, v
      2. i, ii, iii, iv, v, vi
      3. i, iii, iv, vi, ii, v
      4. iii, i, vi, iv, ii, v
  18. The following were used to investigate a certain factor that affects sinking and floating:
    • hammer
    • water
    • basin
    • metallic bottle top
      Which factor was being investigated?
      1. Size of an object
      2. Type of material
      3. Shape of an object
      4. Weight of material
  19. The following are components of air and their uses. Which one is correctly matched?
    1. 21% - photosynthesis
    2. 0.97%-preservation of food
    3. 0.03%-burning substances
    4. 78%-formation of proteins
  20. Grade six learners set up the experiment shown below.
    20 adadad
    What was their observation after a few minutes?
    1. Air occupies space
    2. Water level in the basin dropped
    3. Water occupies space
    4. Oxygen support burning
  21. Which one of the following materials are correctly grouped?
            Non-magnetic materials                  Magnetic materials
    1. Copper, aluminium, steel                    Iron, platinum, magnetic tape
    2. Bronze, brass, zinc                             Gold, copper, aluminium
    3. Copper, zinc, aluminium                     Tin, cobalt, sicel
    4. Plastic, weed, nubber                         Zinc, alnico, plastic
  22. The diagram below shows a weather instrument.
    22 addaad
    Which one of the following statements is not correct about the instrument above?
    1. It measures two aspects of weather
    2. It uses the principal of matter in motion
    3. A biro cap is used to allow free rotation
    4. The arrow head should be narrow than the tail head
  23. The following are practices that helps to control the spread of water-borne diseases.
    1. cleaning hands after visiting toilets
    2. wearing gumboots while walking in stagnant water
    3. covering pit latrines after use
    4. washing fruits and vegetables eaten raw v) draining stagnant water
      Which practices helps to control both cholera and typhoid?
      1. i, ii and iii
      2. v, iv and ii
      3. ii, iii and iv
      4. iv, iii and i
  24. Which one of the following pests are correctly matched with the nature of damage it causes?
    1. Aphids - make holes in the stems
    2. Cutworms - cut stems of seedlings
    3. Stalkborer - make holes in roots
    4. Weevils-suck sap from leaves
  25. The diagram below represent a certain plant.
    25 adadad
    Which of the following features is not an adaptive characteristic of the plant shown?
    1. It has thorns instead of leaves
    2. Stems are green to make food 
    3. Has air sacs that decrease transpiration
    4. Has deep roots that spread a lot
  26. Which one of the following pairs of activities is heat used?
    1. Making plant food and using iron
    2. Drying grains and cooking
    3. Keeping pests away and drying clothes
    4. Produce electricity and communication
  27. Which one of the following only consists of sources of electricity?
    1. Solar panel and dry cells
    2. Torch cells and car engines
    3. Bicycle dynamo and dams
    4. Bulbs and torches
  28. Which one of the following foods can be preserved by both drying and smoking?
    1. Vegetables and fruits
    2. Milk and fruits
    3. Meat and fish
    4. Vegetables and milk
  29. Deep trenches that form V-shaped valleys are most likely to have been caused by
    1. splash erosion
    2. gulley erosion
    3. landslide
    4. rill erosion
  30. Which one of the following groups of foodstuffs consists of a balanced diet?
    1. Chapati, milk, peas and beans
    2. Fish, irish potatoes, kales and beans
    3. Cabbage, sweet potatoes, carrots and rice
    4. Termites, green bananas, spinach and rice
  31. Which one of the following is a type of manure that is made by chopping leguminous plants and ploughing them back to the soil?
    1. Compost manure
    2. Organic mulches
    3. Farmyard manure
    4. Green manure
  32. Which one of the following animals are correctly grouped?
    Constant body temperature            Varying body temperature
    1. Snakes, birds, frogs                    Whale, tilapia, trou
    2. Shark, chicodile, tal                     Hawk, chicken, tand
    3. Ducks, platypus, pat                   Tilapia, gecko, newt
    4. Whale, salamander, newt            Snakes, lizards, shark
  33. Which one of the following parasites are only internal parasites?
    1. Lungworms, hookworms and tapeworms 
    2. Ticks, tsetseflies and mites
    3. Liverfluke, fleas and hookworms
    4. Roundworms, tapeworms and louse
  34. The set-up below was used to investigate an aspect of light.
    34 adada
    Which one of the following aspects was being investigated?
    1. Making a rainbow
    2. Bending of light
    3. How light travels
    4. Reflection of light
  35. Which one of the following is true about all veins? They
    1. carry oxygenated blood
    2. have valves
    3. have pulses
    4. have thick walls
  36. Which one of the following livestock feed substances provide calcium minerals?
    1. Salt licks, fishmeal, sunflower seeds
    2. Bonemeal, fishmeal, salt licks
    3. Fishmeal, sunflower seeds, cotton seeds
    4. Cotton seeds, bonemeal, salt licks
  37. The following chart shows a simple classification of crops.
    37 adada
    The crops represented by i, ii, iii and iv are likely to be
                i                ii             iii            iv
    1. Cassava Beans Groundnuts Maize
    2. Sorghum Orange Avocado Coconut
    3. Potato Greengrams Pawpaw Sisal
    4. Carrots Peas Sunflower Cotton.
  38. Which one of the following plants are only non-green non-flowering?
    1. Algae, moss, conifers
    2. Mushroom, toadstool, puffball
    3. Grass, maize, beans
    4. Lichen, moss, fern
  39. Which one of the following correctly explains an insect pollinated flower?
    1. Brightly coloured, sticky stigma hanging outside
    2. Dull petals, feathery with nectaries
    3. Few pollen grains, flat sticky stigma, brightly coloured
    4. Small in size, sweet smell, a lot of pollen grains
  40. Which one of the following animals provides mutton and wool?
    1. Goats
    2. Sheep
    3. Cattle
    4. Carmel
  41. Which one of the following is not an importance of animals in the environment? 
    1. Produces oxygen that is used by plants during germination
    2. Burrows in the soil to allow acration
    3. Helps in breaking soil particles
    4. Makes the soil fertile by adding humus
  42. Clouds that are found high in the sky are also likely to have
    1. white colour
    2. dark grey colour
    3. irregular in shape
    4. low in the sky
  43. The set-up below was used by grade five learners to investigate a certain aspect.
    43 adada
    What were they investigating?
    1. Convection in liquids
    2. Melting of substances
    3. Conduction of heat in different solids
    4. Radiation in liquids
  44. Which one of the following childhood diseases are correctly matched with the age at which they are administered?
    1. 6 weeks-Tuberculosis, rota virus, whooping cough, poliomyelitis
    2. 10 weeks-lockjaw, diphtheria, pertussis, poliomyelitis 
    3. At birth-pertussis, hepatitis, tuberculosis, polio
    4. 9 months-meningitis, yellow fever, measles, rubella
  45. Grade 6 learners performed the experiment below.
    45 adadad
    What was their conclusion?
    1. Effects of smoking tobacco
    2. Damp cloth became dark
    3. The plate started burning
    4. Glass container was full of smoke
  46. The following descriptions explains a certain stage of HIV infection.
    • tests positive
    • has no AIDS
    • one can transmit virus
      Which one of the following is another description of the above stage?
      1. One has weak immune system
      2. May also test negative
      3. One lacks appetite
      4. Looks healthy
  47. Draining stagnant water and clearing bushes around our homesteads is useful for the prevention of
    1. bilharzia
    2. cholera
    3. malaria
    4. tuberculosis
  48. The following are practices that can lead to spread of HIV except
    1. cating together with infected person from a common plate
    2. sharing sharp piercing objects
    3. transfusion of unscreened blood
    4. sharing body fluids such as milk from mother's breast
  49. Which of the following consists of translucent materials only?
    1. Air, light cloth, white sheet of paper, glass
    2. Window panes, clear water, plastic, mirror 
    3. Metallic sheet, milk, dirty water, smoke
    4. Frosted glass, bathroom window panes, light, cloth, white paper
  50. The diagram below was used to investigate a certain aspect.
    50 adada
    What aspect was being investigated??
    1. Convection in air
    2. Convection in liquids
    3. Transfer of heat in vacuum
    4. Movement of smoke Box

MARKING SCHEME

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