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

QUESTIONS

1. A certain communicable disease has the following signs and symptoms
   1. Sweating alot at night
   2. Loss of weight
   3. Coughing blood stained spatum
      The disease is likely to be;
      1. Malaria
      2. Tuberculosis
      3. Whopping cough
      4. Measles
2. Which among the following uses of water is a use of water in the farm?
   1. Sport fishing
   2. Making fountains
   3. Mixing chemicals
   4. Making products
3. The diagram below shows a developing foetus
   
   The part labelled X has the following function except?
   1. Keep the foetus warm
   2. Protect the foetus from shock
   3. Help in exchange of food nutrients
   4. Allows free turning of the foetus
4. Excretory system consist of the following except?
   1. Lungs
   2. Skin
   3. Kidney
   4. Anus
5. The following are changes that takes place during adolescence in girls except?
   1. Pubic hair grows
   2. Increase in weight
   3. Menstruation start
   4. Chest broadens
6. A weed has the following characteristics
   1. Has fleshy stems
   2. Produces purple flowers
   3. Grows along the ground
      The weed is likely to be
      1. Pigweed
      2. Oxalis
      3. Wandering Jew
      4. Sodom apple
7. All the following are causes of soil pollution except one. Which one is it?
   1. Polythene and plastic
   2. Oil spoils
   3. Excess fertilizers
   4. Rotting vegetable matter
8. Which one of the following plants makes its own food but do not produced flowers?
   1. Grass
   2. Cabbage
   3. Fern
   4. Maize
9. Which one of the following drugs is illegal when abused?
   1. Cobblers glue
   2. Tobacco
   3. Khat
   4. Alcohol
10. The diagram below shows blood components and their functions
    
    Which one is not correctly matched with it's function?
    1. U
    2. V
    3. W
    4. X
11. The following are characteristics of a certain animal
    1. Body covered by moist skin
    2. Breath by lungs
    3. Liver partly in water and on land
    4. Lay eggs
       The animal is likely to be:
       1. Tilapia
       2. Crocodile
       3. Frog
       4. Whale
12. Which among the following pair of animal feeds nourishes the animal with energy when fed?
    1. Desmodium and cloves
    2. Maize stalks and sunflower seeds
    3. Cotton seed cake and saltlick
    4. Napier grass and lucern
13. Internal livestock parasites causes the following effect on animals except?
    1. Poor health
    2. Anaemia
    3. Irritation
    4. Swollen stomach
14. Grade 6 learners carried the following materials to class
    1. Basin
    2. Mirror
    3. Water
       What were they likely to investigate?
       1. Making a rainbow
       2. Sending of light
       3. Reflection of light
       4. Refraction of light
15. All the following are signs and symptoms of syphilis except one. Which one is it?
    1. Painless pimple appears on the lips
    2. Skin rash
    3. Swelling of lymph glands
    4. Ring shaped patches appeals on the skin
16. The diagram below shows a jaw of a mammal adapted to its feeding
    
    The type of teeth marked X is called:
    1. Canines
    2. Carnassial teeth
    3. Premolars
    4. Diastema
17. In which one of the following methods of grazing is an animal not likely to feed an pasture?
    1. Stall feeding
    2. Paddocking
    3. Herding
    4. Strip grazing
18. The attachment of the zygote to the uterine walls is called?
    1. Gestation
    2. Conception
    3. Implantation
    4. Fusion
19. Which one of the following statements is not true about hard water?
    1. Clogs hot water pipes
    2. Lathers easily with soap
    3. Is good for drinking
    4. Can be softened by boiling
20. In which one of the following activities is friction least needed?
    1. Writing
    2. Walking
    3. Riding a bicycle
    4. Swimming
21. Which one of the following shows the third and the sixth planet from the sun respectively? 
    1. Earth and Saturn
    2. Venus and Jupiter
    3. Mars and Uranus
    4. Venus and Mercury
22. The diagram below shows a mammalian heart
    
    Which chamber labelled above pumps deoxygenated blood?
    1. W
    2. X
    3. Y
    4. Z
23. An animal growing at a very slow rate and do not reach maturity with others of its age is said to have:
    1. Robust growth
    2. Average growth rate
    3. Stunted growth
    4. Unhealthy growth
24. Which one of the following is away of softening temporary hard water?
    1. Adding soap
    2. Boiling
    3. Shaking water
    4. Adding chemicals
25. Which among the following media when used to campaign against the spread of HIV/AIDS is the best?
    1. Television
    2. Radio
    3. Newspaper
    4. Magazine
26. Fish and birds move easily because of:
    1. hollow bones
    2. streamlined
    3. presence of wings
    4. presence of fins
27. The following are domestic waste management practices except?
    1. Reducing waste generation
    2. Making compost
    3. Re-Using items
    4. Recycling
28. Which one of the following statements about HIV and AID is true?
    1. People living with HIV/AIDS are thin
    2. HIV and AIDS is a curse
    3. Only immoral people get HIV/AIDS
    4. HIV and AIDS are not the same
29. The next method of separating a mixture of sugar and sand after adding water is:
    1. Decanting
    2. Dissolving
    3. Filtering
    4. Sieving
30. The diagram below shows the human digestive system
    
    Which part labelled above is not correctly matched with its function
             Parts       Function
    1. (i)              Digestion of protein
    2. ii)              Mixes foods with cigestive enzymes
    3. (iii)            Absorption of digested foods
    4. (iv)            Absorption of water
31. Which group of small animals below is correctly grouped?
    1. Ant, spider, mite
    2. Spider, tick, scorpion
    3. Weevily, butterfly, tick
    4. Mite termite, tick
32. Which one of the following is the percentage of oxygen and rare gases in the atmosphere respectively?
    1. 0.97% and 21%
    2. 21% and 0.03%
    3. 21% and 0.97% 
    4. 78% and 0.97%
33. Which one of the following pests is correctly matched with the part of the crop it attacks?
           Pest                   Part of crop attacked
    1. Aphid                  Grains
    2. Stalkborers         Leaves
    3. Cutworms           Stems
    4. Weevils               Leaves
34. Which one of the following levers is the effort at the centre when in use?
    1. Wheelbarrow
    2. Spade
    3. Claw hammer
    4. Crawbar
35. Which one of the following is a source of electricity?
    1. Electromngnet
    2. Bulb
    3. Bicycle dynamos
    4. Dam
36. The diagram below shows a set-up used to demonstrate a certain aspect of heat
    
    The aspect of heat investigated was:
    1. Conduction of heat in different solids
    2. Convection of heat in liquid
    3. Expansion in solid
    4. Radiation of heat
37. When investigating the component of soil pupils heated soil in a contain until smoke was produced, this was to investigate the presence of:
    1. Air in the soil
    2. Organic matter
    3. Water in the soil
    4. Living organism in the soil
38. Which one of the following pairs are both reason for lighting a house?
    1. Safety and discouring pests
    2. Safety and warming
    3. Warming and avoiding accident
    4. Keeping off pests and keeping house tidy
39. When breathing in the:
    1. Diaphragm flattens
    2. Lung shrinks
    3. Diaphragm become domeshaped
    4. Volume of chest decreases
40. Which one of the following plants is not a tuber crop?
    1. Onion
    2. Cassava
    3. Arrowroot
    4. Carrot
41. Which among the following consists of characteristic of insect pollinated flowers?
    1. Sweet scented large amount of pollen grains
    2. Brightly coloured, sticky pollen grains 
    3. Light pollen grains, sweet scented 
    4. Dull coloured, sweet scented
42. The diagram below shows a set up used to investigated a certain property of air
    
    Which one of the following will not be observed?
    1. Bubbles formed on water
    2. Water rose up the straw when heating stopped
    3. Water rose up the straw when heating continued
    4. Water dropped down the straw when heating continued
43. Which one of the following factors will not affect sinking and floating of a material in water? The
    1. Mass of material 
    2. Type of material
    3. Size of material
    4. Shape of material
44. Which one of the following consists of magnetic materials only?
    1. Tin, aluminium, copper
    2. Iron, steel, cobalt
    3. Tin, iron, copper
    4. Aluminum, steel, cobalt
45. Which one of the following is a major component of the environment?
    1. Water
    2. Light
    3. Heat
    4. Sound
46.  Which material below is a translucent material?
    1. Mirror
    2. Window pane
    3. Kerosene
    4. Dirty water
47. The diagram below shows the change of state in matter
    
    Which two processes involves an increase in temperature?
    1. ii and iv
    2. ii and iii
    3. i and ii
    4. i and iv
48. Which one of the following is not a source of light?
    1. Moon
    2. Firefly
    3. Star
    4. Sun
49. Which one of the following causes an increased growth of water plant in a nearby river? Presence of:
    1. Market place near
    2. Factory
    3. Garage
    4. Tea farm
50. A humming bird is adapted to feed on nectar by having a beak that is:
    1. Short and curved
    2. Long and curved
    3. Short and strong
    4. Long and straight

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