Thursday, 14 April 2022 08:59

Science Questions and Answers - Class 7 End of Term 1 Exams 2022 Set 1

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QUESTIONS

  1. Which one of the following type of soil erosion is characterised by small channels on sloping land?
    1. Sheet erosion
    2. Gulley erosion
    3. Rill erosion
    4. Splash erosion
  2. The method of food preservation that works by making bacteria inactive is;
    1. drying
    2. canning
    3. smoking
    4. freezing
  3. The brightest planet in the solar system is;
    1. Mars
    2. Mercury
    3. Earth
    4. Venus

Use the diagram below to answer questions 4 and 5.
4 sc

  1. Fertilization takes place in the part labelled; 
    1. M
    2. O
    3. P
  2. A mature ova is released from part M every 28 days through a process called;
    1. menstruation
    2. ovulation
    3. fertilization
    4. urination
  3. The most refracted colour of the rainbow is;
    1. violet
    2. red
    3. indigo
    4. orange
  4. The following are methods of controlling soil crosion. Which one is not?
    1. Contour ploughing
    2. Planting cover crops
    3. Digging along the slopes
    4. Mulching
  5. Which one of the following animal feeds is not classified as a concentrate?
    1. Dairy meal
    2. Silage
    3. Sow and weaner
    4. Growers mash
  6. For a seed to germinate, the gas needed
    1. Nitrogen
    2. Carbon dioxide
    3. Argon
    4. Oxygen
  7. The component of soil being investigated in the experiment below is;
    10 sc
    1. water
    2. organic matter
    3. mineral particles
    4. air 
  8. Which one of the following water-borne diseases can be controlled by draining stagnant water?
    1. Bilharzia
    2. Typhoid
    3. Cholera
    4. Malaria
  9. Which one of the following objects has a definite volume but no definite shape?
    1. A piece of chalk
    2. Carbon dioxide
    3. Kerosene
    4. Sand
  10. The experiment below was used to investigate a certain process in plants. The set-up was placed in the sunlight for a few days.
    13 sc
    The process demonstrated above is;
    1. absorption in plants
    2. photosynthesis in plants
    3. transportation in plants
    4. transpiration in plants 
  11. In which of the following objects will sound travel the slowest?
    1. Metal
    2. Wood
    3. Water
    4. Air
  12. The following are signs and symptoms of a certain water-borne disease.
    1. Severe abdominal pains 
    2. Violent diarrhoea with mucus
    3. Dehydration The disease can be prevented by;
      1. wearing protective clothing
      2. draining stagnant water near the home
      3. boiling drinking water
      4. killing fresh water snails
  13. Which one of the following mammals reproduces by laying eggs?
    1. Bat
    2. Duck-billed platypus
    3. Ostrich
    4. Monkey
  14. HIV/AIDS can be transmitted through the following ways except;
    1. sexual intercourse
    2. sharing skin piercing tools
    3. mosquito bites
    4. mother-to child during delivery
  15. The type of pollination shown in the diagram below is;
    18 sc
    1. insect pollination
    2. cross pollination
    3. self pollination
    4. wind pollination
  16. The type of food responsible for growth of new tissues and repair of worn-out body parts is;
    1. proteins
    2. carbohydrates
    3. vitamins
    4. mineral salts
  17. Which one of the following is a use of water in the industries?
    1. Cooling machines
    2. Cooking
    3. Mixing acaricides
    4. Boat riding
  18. On which principle does a raingauge work?
    1. Liquids occupies space 
    2. Liquids expands when heated and contract when cooled
    3. Air in motion
    4. Air is a mixture of gases
  19. Std. 6 pupils did the experiment below.
    21 sc
    All the following happens after some time except:
    1. the candle goes off
    2. water enters the glass
    3. water rises in the
    4. the level of water in the basin drops
  20. What were the pupils likely to be investigating?
    1. Oxygen is used in burning
    2. Oxygen is needed during photosynthesis
    3. Air has mass
    4. Air expands 
  21. The smoothness or coldness of soil is known as:
    1. drainage
    2. capillarity
    3. water retention
    4. soil texture 
  22. Which one of the following crops is not a tuber?
    1. Cassava
    2. Greengrams
    3. Yams
    4. Sweet potatoes
  23. Which one of the following parts of the male reproductive system is wrongly matched with its function?
    1. Testis - Produce sperms
    2. Spermduct - Store sperms
    3. Scrotum - Regulate the temperature of the testis
    4. Urethra - allow the passage of sperms and urine outside the body 
  24. Chrispine dropped a coin in water and it appeared raised as shown below.
    27 sc
    This is due to;
    1. splitting of the white light
    2. refraction of light
    3. reflection of light
    4. dispersion of light 
  25. The tendency of an object to remain in its state either moving or stationary is known as;
    1. motion
    2. gravity
    3. weight
    4. inertia
  26. Who among the following children ate a balanced diet?
    1. Faith - Termites, groundnuts, pork
    2. Mary - Beef, mutton, fish
    3. Fidelis - Ugali, green grams, kales
    4. Alice - Potatoes, matoke, cabbage 
  27. The following are examples of rotational methods of grazing except:
    1. strip grazing
    2. paddocking
    3. tethering
    4. herding
  28. The air we breathe in is cleaned in the:
    1. air sac
    2. nose
    3. bronchus
    4. mouth 
  29. Which one of the following boxes consists of body fluids through which HIV can be transmitted?
    1. Digestive juices
      Blood
      Semen
    2. Semen
      Saliva
      Blood
    3. Bile
      Breast milk
      Vaginal fluid
    4. Mucus
      Blood
      Urine
  30. Which one of the following diseases is not included in the immunization schedule for infants?
    1. Tetanus
    2. Tuberculosis
    3. Malaria
    4. Measles
  31. Which one of the following materials will allow some light to pass through but you cannot see through them clearly?
    1. Frosted glass 
    2. Mirror
    3. Clean water
    4. Wood 
  32. The following are groups of cash crop except;
    1. beverage crops
    2. oil crops
    3. fibre crops
    4. tuber crops 
  33. Which one of the following is not a use of water in the body?
    1. Prevents the skin from drying
    2. Prevents constipation
    3. Keeps the body tissues soft
    4. Prevents the skin from drving
  34. The diagram below shows a beam balance.
    37 sc
    It is used to:
    1. measure the weight of objects
    2. measure force of different objects
    3. compare mass of different objects
    4. measure the volume of objects 
  35. The following are examples of legumes in livestock feeds except:
    1. nappier grass
    2. luceme
    3. clovers
    4. desmodium 
  36. Which one of the following weeds is used as a vegetable?
    1. Sodom apple
    2. Oxalis
    3. Wandering jew
    4. Pigweed 
  37. Which one of the following cannot cause death in animals?
    1. Starvation
    2. Being killed by other animals
    3. Boredom
    4. Old age 
  38. Which one of the following is an effect of HIV/AIDS to the nation?
    1. Congestion in hospitals
    2. Low self-esteem
    3. Loss of family income
    4. Sadness in the family
  39. The following are signs and symptoms of a certain communicable disease.
    1. Rise in body temperature. 
    2. Headache
    3. Pain in the joints
    4. Loss of appetite
      The disease described above can be prevented through all the following ways except;
      1. drain stagnant water
      2. covering all the surfaces of pools of water with oil
      3. immunization
      4. destroying empty containers
  40. When a force is applied on an object, the following can happen except;
    1. make a stationary object start moving
    2. change the state of an object
    3. reduce the speed of a moving object
    4. stop a moving object
  41. Which method of weed control also conserves moisture?
    1. Use of chemicals
    2. Slashing
    3. Digging out
    4. Mulching
  42. The following are characteristics of all animals except they;
    1. move from one place to another
    2. transpire
    3. remove waste
    4. reproduce 
  43. The problem related to teeth shown in the diagram below is called;
    46 sc
    1. dental cavities
    2. bad breath
    3. bleeding gums
    4. plaque 
  44. Which one of the following is not a characteristic of cumulus clouds?
    1. They are low in the sky
    2. They have a flat base
    3. They are white in colour
    4. They look like bundles of cotton wool 
  45. On a see-saw, a small boy can lift a big boy when;
    1. they sit on the same side
    2. the two boys move equal distance from the pivot
    3. the big boy moves closer to the pivot
    4. the big boy sits further from the pivot 
  46. The phase of the moon that cannot be seen at all is;
    1. full moon
    2. gibbous
    3. crescent
    4. new moon 
  47. Which animal below does not have a moist skin?
    1. Crocodile
    2. Frog
    3. Salamanda
    4. Toad

MARKING SCHEME

sci marking scheme


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