STD VII SCIENCE ONLINE SELF NECTA TEST FOR YEAR 2014

THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL
PRIMARY SCHOOL LEAVING EXAMINATION        

05 E SCIENCE

Time: 1:30 Hours Wednesday, 10th September 2014 a.m

Instructions

  1. This paper consists of fifty (50)questions.
  2. Answer allthe questions.
  3. Read all the given instructions in the special answer sheet (OMR)and fill in allthe required information.
  4. Write your Examination Numberand then shade the digitsof the number in therespective place in your answer sheet.
  5. Shadethe letter of the correct answer for each question in the answer sheet provided, for example, if the correct answer is A shade as follows:
  6. If you have to change your answer, you must rub out the shading very neatlybefore shading the new one. Use a clean rubber.
  7. Use HB pencilonly.
  8. Cellular phones are not allowedin the examination room

Choose the correct answer and shade its letter beside each question in the answer sheet provided.

1. Which of the following diseases can be spread by houseflies and cockroaches? 

  1.  Chicken pox
  2.  Diarrhoea
  3.  Whooping cough
  4.  Malnutrition 
  5.  Typhoid.
Choose Answer :

2. Which of the following is not found in the blood system?

  1.  Bronchiole 
  2.  Valve 
  3. Auricle 
  4. Capillary 
  5.  Artery.
Choose Answer :

3. Which of the following should be considered before attending a person suffering from AIDS?

  1.  Wear clean clothes
  2.  Wash yourself with soap 
  3.  Wear gloves
  4. Pray 
  5. Allow him/her to rest.
Choose Answer :

4. Which of the following is a characteristic of clean and safe water?

  1. Fetched from wells
  2. Stored and cooled in a water pot
  3. Filtered and stored in clean container
  4. Boiled, filtered and stored in clean container
  5. Without a lot of soda ash.
Choose Answer :

5. Which of the following diseases does not have a vaccine?

  1. Tuberculosis 
  2. Tetanus 
  3. Measles
  4. Whooping cough 
  5. Trachoma.
Choose Answer :

6. The gas used by plants to manufacture proteins is

  1. carbon dioxide
  2. hydrogen 
  3. oxygen
  4. nitrogen 
  5. natural gas.
Choose Answer :

7. The amount of water lost by plants increase due to the presence of whichcondition in the environment?

  1.  Heat and water vapour
  2.  Water vapour and light
  3.  Wind and sun rays
  4.  Clouds and wind
  5. Water vapour and wind .
Choose Answer :

8. People are likely to cause soil erosion if they do one of the following:

  1.  Cut down trees
  2.  Add manure to the soils
  3.  Plant grass 
  4.  Make terraces on sloppy ground
  5. Plant trees.
Choose Answer :

9. Agriculture, livestock keeping and mining are activities done by human beingsand all depend on

  1.  rivers 
  2.  springs 
  3.  land
  4. irrigation 
  5.  wind.
Choose Answer :

10. A chameleon usually changes its colour in order to

  1.  search for food 
  2.  breath
  3.  reproduce
  4.  observe enemies
  5. . Protect itself
Choose Answer :

11. How many stages are there in the growth of a cockroach?

  1.  Two
  2.  Three
  3.  Four
  4.  Five 
  5.  Six.
Choose Answer :

12. Which of the following does not have vertebral column?

  1. Spider 
  2. Bat 
  3. Cat
  4. Man 
  5. Chicken.
Choose Answer :

13. One of the functions of the muscles in the body is to

  1.  prevent bleeding 
  2.  cause various movements
  3.  produce red blood cells 
  4.  hold the teeth in place
  5. E transport blood in the body.
Choose Answer :

14.Human bones are joined in order to

  1.  prevent breakage 
  2.  make them of the same size
  3.  enable them to bend easily 
  4.  make the shape of the body
  5. enable them to straighten.
Choose Answer :

15. Which of the following bend when passing from one medium to another? 

  1. Rainbow 
  2. Parallel lines 
  3. Light ray
  4. Lens focus 
  5. A ray and lens focus.
Choose Answer :

16. In the light spectrum, the colour which bends earlier than others is 

  1.  red 
  2.  yellow
  3.  indigo 
  4.  blue 
  5.  violet.
Choose Answer :

17. Study Figure 1 which shows the internal part of a bean seed.

Which part is responsible for protecting the seed from harmful insects or changes

in temperature?

  1.  2
  2.  3 
  3.  5 
  4.  4
  5.  1.
Choose Answer :

18. The sky looks blue because

  1.  air and water are bluish
  2. red colour is dispersed more than blue colour
  3. vision power decreases
  4. blue colour is dispersed more than other colours
  5. during sunset, the sun appears yellowish.
Choose Answer :

19. Which of the following items does not use magnet?

  1.  Loud speaker 
  2.  Telephone 
  3.  Radio
  4.  Mobile phone 
  5. Iron.
Choose Answer :

20. The unit of work is

  1.  Kilogram 
  2.  Newton
  3.  Tonne 
  4.  Joule 
  5.  Gram.
Choose Answer :

21. In the normal procedure, the first stage to be followed when conducting a

scientific experiment is

  1. to start an experiment 
  2. data collection 
  3. problem identification
  4. data analysis 
  5. interpretation of results.
Choose Answer :

22. The third stage in a scientific experiment is

  1.  data analysis 
  2.  interpretation of results
  3.  preparation and starting the experiment 
  4.  data collection
  5.  problem identification.
Choose Answer :

23. Bahati put a red litmus paper in an unknown chemical compound. The colour ofthe litmus paper changed to blue. This show that the chemical compound had

  1. acid 
  2. ash
  3.  water 
  4.  fat 
  5.  spirit.
Choose Answer :

23. Bahati put a red litmus paper in an unknown chemical compound. The colour ofthe litmus paper changed to blue. This show that the chemical compound had

  1. acid 
  2. ash
  3.  water 
  4.  fat 
  5.  spirit.
Choose Answer :

25. What will happen if NORTH and NORTH magnetic poles approach each other?

  1.  They will strongly attract each other
  2. They will attract each other towards one direction
  3.  They will repel
  4. Nothing will happen
  5. They will break.
Choose Answer :

26. PQ is a ruler whose length is half a metre. A load of 20 gm is placed at P adistance of 0.1 m from the fulcrum. If a load is placed at Q a distance of 0.4 mfrom the fulcrum, what will be the weight of M when the rule is balancing?

  1.  4g 
  2. 10g 
  3.  5g
  4.  2.5g
  5.  25g.
Choose Answer :

27. The concept of reflection of light is manifested in one of the following things:

  1.  Microscope 
  2.  Television 
  3.  Watch
  4.  Bulb 
  5.  Spectacles.
Choose Answer :

28. Study Figure 2 which shows an electric circuit having bulbs connected in a parallel form and answer the question that follows.

What will happen when bulb 2 blows? Bulb number

  1.  3 only will remain alight
  2.  1 and 3 will remain alight
  3. 1only will remain alight 
  4.  1 and 3 will blow
  5.  3 will blow.
Choose Answer :

29. Presence of living organisms, water and air is a characteristic of which of thefollowing planets?

  1.  Mars 
  2.  Jupiter
  3.  Venus 
  4.  Earth 
  5.  Saturn.
Choose Answer :

30. The earths axis is inclined at which degrees?

  1.  60
  2.  181/2 
  3.  32 1/2
  4.  251/2
  5.  231/2.
Choose Answer :

31. Which of the following revolves around the earth from west to east?

  1.  Sun 
  2.  Star 
  3.  Moon 
  4.  Meteor
  5. E Planet.
Choose Answer :

32. A person having swollen neck gland (goitre) has a deficiency of which mineralsalt?

  1.  Calcium 
  2.  Iodine
  3.  Potassium 
  4.  Phosphorus 
  5.  Limestone.
Choose Answer :

33. Carefully observe Figure 3 and answer the question that follows:

Which letter in Figure 3 represents the uterus?

  1. C 
  2. D
  3. E 
  4. A 
  5. B.
Choose Answer :

34. One of the functions of the bones is to manufacture

  1.  blood platelets 
  2.  blood plasma 
  3.  white blood cells
  4.  red blood cells 
  5.  blood clotting cells
Choose Answer :

35.Uhuruhas a problemof having broken teeth and weak legs. What type of foodnutrients wouldyouadvise him to eat in order to solve the problem?

  1.  Iron minerals 
  2.  Phosphorus minerals 
  3.  Calcium minerals
  4. Iodine minerals 
  5.  Vitamin K.
Choose Answer :

36. WhenAhadiwas asked a science question on solar eclipse, he thought for a whilebefore giving the correct response to the teacher. Which part of the brain did he use to answer the question?

  1. The front brain 
  2.  The hind brain
  3.  The mid brain 
  4.  The front and hind brain
  5. The mid and hind brain.
Choose Answer :

37.The function of thespinal cord in thehuman nervoussystem is to

  1.  deal with involuntary actions
  2. deal with voluntary actions
  3. Ccoordinate movement of the body
  4. maintain the shape of the body
  5. transport impulses to thecentral nervous system.
Choose Answer :

38. High tide and low tide in oceans and great lakes is caused by

  1.  revolution of the earth around the sun
  2. rotation of the earth on its axis
  3. moon eclipse
  4. solar eclipse
  5. attraction force between the earth and the moon.
Choose Answer :

39. Under normal circumstances. rust is the result of a chemical reaction between

  1. copper, water and oxygen 
  2. sodium_water and oxygen
  3. calcium, water and oxygen 
  4. iron, oxygen and water
  5. water, oxygen and potassium.
Choose Answer :

40. Vegetables and fruits help in the formation of

  1.  red blood cells 
  2.  white blood cells 
  3.  blood platelets
  4. blood plasma 
  5.  bone marrow.
Choose Answer :

41. The following methods can be used for food preservation except

  1.  baking 
  2.  using honey 
  3.  Drying
  4.  Salting
  5.  Using water.
Choose Answer :

42. The following are types of food nutrients except

  1.  mineral salts
  2.  vitamins
  3. water
  4.  Protein
  5. Carbohydrates
Choose Answer :

43. Which of the following foods canbe preservedby deep freezing?

  1. Fruits and vegetables 
  2. Vegetables and meat
  3. Fish and fruit 
  4.  Meat and fish
  5. Meat and grain.
Choose Answer :

44. The deficiency disease caused by lack of iron in the diet is

  1.  rickets 
  2.  kwashiorkor 
  3.  anaemia
  4.  marasmus 
  5.  beriberi.
Choose Answer :

45. Carefully observe the foods represented in Figure 4 and then answer the question that follows.


The function of the foods shown in Figure 4 is to

  1. build up the body 
  2. give energy to the body
  3. protect the body 
  4. generate heat to the body
  5. build up bones.
Choose Answer :

46. A fish which is in the water seems to be at the surface of the water while it isactually deep in the water because

  1.  the fish is not stationary in the water
  2.  the water is calm and clean
  3.  the depth of water is reduced by the light rays
  4.  fish scales make it appear big
  5.  light rays are refracted in the water.
Choose Answer :

47. The correct food chain is

  1.  eagle grass leopard    goat
  2. grass eagle leopard    goat
  3. leopard eagle grass   goat
  4. grass goat leopard  eagle
  5. eagle leopard goat   grass.
Choose Answer :

48. The three main parts of the circulatory system are

  1. arteries, veins and capillaries 
  2. blood, heart and lungs
  3. blood, blood vessels and heart
  4. blood vessels, heart and valves
  5. heart, aorta and arteries.
Choose Answer :

49. Man uses the following sensory organs when doing scientific investigation:

  1.  Tongue, eyes, nose, skin, ears 
  2.  Brain, nose, eyes, sensory nerves
  3.  Brain, nose, ears, eyes, skin 
  4.  Brain, tongue, eyes, skin, ears
  5. Eyes, skin, ears, sensory nerves.
Choose Answer :

50. Which of the following hormones when insufficient cause defect in female reproductive system?

  1.  Pituitary and insulin 
  2.  Estrogen and progesterone
  3.  Thyroxine and pituitary 
  4.  Estrogen and insulin
  5.  Thyroxine and estrogen.
Choose Answer :

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