Science Questions and Answers - Class 7 End Term 2 Exam 2021 Set 2

1. Which one of the following characteristics of molar teeth is CORRECT?
   1. They have cusps with even top.
   2. Have three roots and chisel shaped.
   3. They have uneven top and ridges.
   4. Have two roots and cusps.
2. In which of the following parts of the digestive system does absorption take place?
   1. Mouth and small intestine.
   2. Stomach and large intestine.
   3. Small intestines only.
   4. Large intestines and small intestines.
3. During a science lesson, std 6 pupils poured water at different positions of a slanting soil surface with small channels. Which type of soil erosion were they LIKELY to be investigating? 
   1. Rill erosion.
   2. Gulley erosion. 
   3. Splash erosion. 
   4. Landslides.
4. A child was having the following signs and symptoms.
   1. Fever. 
   2. Prolonged cough.
   3. Chest pain. 
   4. Paleness in body parts.
      The BEST way of preventing the disease diagnosed above is through ___________________
      1. clearing containers with water.
      2. injection at birth.
      3. proper sanitation
      4. observing high standards of nutrition.
5. Sound travels poorest in
   1. air.
   2. vacuum.
   3. metal.
   4. milk.
6. Which one of the following is TRUE about the human heart? 
   1. Aorta receives blood from left auricle.
   2. Valves prevents the flow of blood.
   3. Wall of ventricles are thicker than that of auricles. 
   4. Blood from the lungs enters the heart through pulmonary artery.
7. Which one of the following pairs consists only of illegal drugs in Kenya?
   1. Alcohol and Bhang.
   2. Alcohol and miraa.
   3. Tea and chang'aa.
   4. Bhang and cocaine.
8. Which one of the following weeds has greenpurple leaves? 
   1. Pig weed.
   2. Black jack.
   3. Mexican marigold. 
   4. Sodom apple.
9. The diagram below represents a weather instrument constructed by class 5 pupils.
   
   The instrument did not work after the lesson, which mistake did they make?
   1. Labelling scale wrongly
   2. Using coloured water. 
   3. Using cork in both bottles.
   4. Using a glass bottle.

Study the diagram below and answer the questions that follows

10. The plant with above type of seed is LIKELY to have_______________ 
    1. fibrous roots.
    2. leaves with network veins. 
    3. absence of chlorophyll.
    4. stored food in endorsperm.
11. Which one of the following methods of food preservation preserves food by coating and removing moisture?
    1. Smoking.
    2. Drying. 
    3. Salting.
    4. Canning,
12. During a Science lesson, four pupils were told to describe an insect pollinated flowers?
    Ann- Produce light pollen grains.
    Ken-Have feathery stigma.
    John-Have large petals.
    Shem-have sticky sepals.
    Who gave the CORRECT answer?
    1. Ann.
    2. John. 
    3. Ken.
    4. Shem.
13. The component of air used by plants to make proteins is approximately?
    1. 21%
    2. 0.03%
    3. 0.97%
    4. 78%
14. Pupils placed a metal rod of 10cm and a pin of 2cm on water to investigate factors that affect sinking and floating. Which one of the following factors were they investigating?
    1. Size of the material. 
    2. Type of the material.
    3. Shape of the material.
    4. Density of the materials. 
15. Which one of the following lists of food provide animals with nutrients that repairs and build their bodies?
    1. Mollasses, maize germ, salt lick. 
    2. Saltlicks, bran, hay.
    3. Lucerne, desmodium, glycine.
    4. Silage, lucerne, clover, dairy meal.
16. Which one of the following diseases is controlled by eating food rich in vitamins and minerals? 
    1. Anaemia.
    2. Marasmus.
    3. Kwashiorkor. 
    4. Rickets.
17. Which one of the following is NOT true about fibres in a diet? 
    1. Helps in emptying the bowel.
    2. Contains rich source of nutrients.
    3. Found in whole grains.
    4. Never digested.
18. Which one of the following is a COMMON characteristics between water vapour, glue and chalk dust? They have 
    1. definate volume.
    2. definate mass.
    3. indefinate volume.
    4. definate shape. 
19. Study the diagram below and answer the question that follows:
    
    Which two processes requires gaining of heat by the substance? 
    1. KN
    2. NM
    3. NZ 
    4. KM
20. Which one of the following is a living component of the environment?
    1. Soil. 
    2. Air. 
    3. Water. 
    4. Plants. •
21. Light can be used in all the following EXCEPT:
    1. cooking.
    2. photosynthesis. 
    3. scare pests.
    4. photography.
22. Which one of the following is NOT a special sound?
    1. Car hooting. 
    2. Screaming.
    3. Music melodies.
    4. Ambulance siren.
23. Which one of the following statements BEST explains why kitchen knife should not be maintained by oiling? 
    1. It is used frequently. 
    2. It is made of stainless steel.
    3. Oil can contaminate food.
    4. Oil can make the knife to rust.
24. Uncontrolled use of farm chemicals may lead to all the following EXCEPT:
    1. excessive growth of water weeds.
    2. death of animals which live in water. 
    3. reduction of the amount of oxygen in water. 
    4. destruction of roofing of buildings due to acid rain.
25. An object thrown out through the window of a moving vehicle move in the direction the vehicle is moving due to:
    1. force of gravity. 
    2. gravitational force.
    3. magnetic force.
    4. force of inertia.
26. Which one of the following pest make holes on the growing bananas, sisal and stem of cashew nuts?
    1. Stalk borers.
    2. Aphids.
    3. Weevils. 
    4. Rodents. 
27. Which one of the following practices would help in maintaining strong teeth in human? 
    1. Drinking milk. 
    2. Eating bread and fruits regularly.
    3. Exercising the teeth by using it to break hard objects. 
    4. Use tooth pick to remove food particles after meal.
28. The diagram below represents a set-up that was used to demonstrate a certain property of matter.
    
    The property demonstrated was:
    1. water exerts pressure.
    2. air is used in burning. 
    3. air has mass.
    4. air occupies space.
29. Which one of the following statements about animals is TRUE? 
    1. Fish have constant body temperature. 
    2. Birds have varying body temperature. 
    3. Reptiles breathe through the lungs.
    4. Young ones of amphibians breathe through
30. The set-up below can be used to investigate a certain property of liquids.
    
    From the set-up we can conclude that, pressure in liquids?
    1. Is greater at the top of the tin. 
    2. Is different at different levels. 
    3. Increases with height.
    4. Is exerted in all directions.
31. Which one of the following pair of livestock parasite attack rabbits?
    1. Flea and louse.
    2. Mite and tick.
    3. Mite and flea. 
    4. Louse and tick. 
32. Which one of the following lists of food consists of a balanced diet?
    1. Eggs, peas, potatoes.
    2. Honey, chapati, meat.
    3. Cabbage, oranges, fish.
    4. Kales, peas, rice.
33. Class five pupils set-up the experiment below to investigate a certain process in plants.
    
    What were the pupils investigating?
    1. Absorption. 
    2. Photosynthesis.
    3. Transportation.
    4. Transpiration
34. Which one of the following materials will only allow some light to pass through them but one cannot see through clearly?
    1. Mirror, kerosene, oiled paper.
    2. Oiled paper, frosted glass, skylights.
    3. White paper, windscreen, milk.
    4. Clear water, window panes and spectacles
35. The following are examples of carnivorous plants EXCEPT:
    1. water lily.
    2. sundew.
    3. venus fly trap. 
    4. butterwort.
36. Which one of the following is NOT a component of soil?
    1. Water. 
    2. Air
    3. Plants. 
    4. Humus. 
37. Class five pupils were investigating drainage in different types of soil as shown below.
    
    Which one of the following conclusions about the soil is CORRECT?
    1. Soil Jhad the most air spaces between its particles.
    2. Soil L had more air spaces than soil K. 
    3. Soil L had the least amount of organic matter.
    4. Soil Jis good for modelling.
38. Which one of the following is NOT a water borne disease?
    1. Malaria.
    2. Typhoid.
    3. Bilharzia.
    4. Cholera.
39. During a science lesson, pupils raised books at different heights and then dropped them on the table. What were they investigating?
    1. Volume of sound. 
    2. Noise pollution. 
    3. Direction of sound.
    4. Different pitch of sound.
40. The table below shows how animals move from one place to another. Which animal is WRONGLY matched.
               Animal          Method of movement
    1. Snail          -        Gliding 
    2. Snake        -        Slithering
    3. Chicken     -        Flying
    4. Rabbit       -        Leaping and hopping
41. Which one of the following statement is NOT true about the environment?
    1. Animals and plants form the living part of  environment. 
    2. Environment has four major components. 
    3. Water covers the largest part of the environment.
    4. Animals and plants depend on air and water directly.
42. The following are social effects of drug abuse EXCEPT:
    1. truancy.
    2. impaired judgement. 
    3. accidents.
    4. prostitution.
43. The table below shows classification of some
    

    Warm blooded	Breath through lungs	Lay fertilized eggs
    Gecko	Tadpoles	Duck
    Dolphin	Frog	Shark
    Pelican	Seal	Salamander

    Which animals were NOT correctly classified? 
    1. Dolphin, tadpole, shark.
    2. Tadpoles, duck, seal.
    3. Pelican, frog.duck.
    4. Salamander, gecko, tadpoles
44. The following characteristics are used to classify clouds EXCEPT:
    1. size.
    2. appearance.
    3. shape.
    4. height.
45. Which one of the following is NOT a use of water in industries?
    1. Fountain.
    2. Make pulp
    3. Make soft drinks. 
    4. Bathing. .
46. A beam balance is used to ____________________________________
    1. compare weight of different objects. 
    2. compare inass of objects in newton.
    3. measure mass of objects. 
    4. compare weight of meat in butcheries.
47. The raingauge is dug into the ground MAINLY to
    1. prevent water from overflowing.
    2. prevent soil from entering. 
    3. reduce the rate of evaporation of rain water collected
    4. prevent ground water from splashing into the funnel.
48. Heat is transferred through a vacuum by
    1. convection and radiation.
    2. radiation only. 
    3. conduction and convection.
    4. convection only.
49. Which component of blood is used for distribution of heat in the body?
    1. White blood cells.
    2. Red blood cells. 
    3. Platelets.
    4. Plasma.
50. Which of the following simple machines has two eins hang on its arms?
    1. Crowbar.
    2. Seesaw.
    3. Scale.
    4. Beam balance

MARKING SCHEME

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