STD VII SCIENCE ONLINE SELF NECTA TEST FOR YEAR 2010

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

05E  SCIENCE

Time: 1:30 Hours Monday, 6" September 2010 o.m.

  1. This paper consists of 50 questions in sections A and B.
  2. Answer all questions.
  3. MI answers must be written in the answer sheet provided.
  4. Cellular phones arc not allowed in the examination room.
  5. Write your Examination Number on your answer sheet.

SECTION A

Choose the correct answer and write its letter beside the question number in the answer sheet provided. 

1. Whieh among the following is not an advantage of sports and games for our health?

  1. Helps to build muscles.
  2. Prevents the body from being attacked by diseases regularly.
  3. Causes high blood pressure.
  4. Entertains the body.
  5. Maintains body health.
Choose Answer :


2. Water mixed with sugar and salt is the first aid given to a patient suffering from

  1. malaria and headache 
  2. diarrhoea and vomiting
  3. meningitis and typhoid
  4. tuberculosis and flue
  5. broken leg or hand.
Choose Answer :


3. One of the following diseases is not sexually transmitted:

  1. AIDS 
  2. Trichonoma
  3. Syphilis
  4. Clamedia 
  5. Trichoma.
Choose Answer :


4. Which of the following vitamins is made in the body in the presence of sunlight?

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


5.What is the importance of vaccination to human beings?

  1. Reduces pain. 
  2. Cures illness.
  3. Prevents diseases. 
  4. Replaces vitamins and minerals in the body.
  5. Replaces worn out cells in the body.
Choose Answer :


6. What type of bacteria causes tuberculosis?

  1. All of those present in air. 
  2.  Basilli. 
  3.  Plasmodium.
  4.  Fungus. 
  5.  Amoeba.
Choose Answer :


7.Factories are not supposed to be built near human settlements because

  1. their construction occupies big area
  2.  large part of factory effluents contain poisonous chemicals
  3.  factory machines make loud noise which can affect ear drums
  4.  factories make people to shift from their settlement
  5.  factory owners do not keep their environment clean.
Choose Answer :


8.The following activities destroy water sources except

  1.  cutting of trees
  2.  burning of forests
  3.  overgrazing along water sources
  4.  throwing chemical rubbish into water sources
  5.  fetching cooking water from water sources.
Choose Answer :


9. A large percentage of the earth's surface is covered by water. Most of this water is found in the

  1. ocean 
  2. rivers 
  3. lakes 
  4. dams 
  5. ponds.
Choose Answer :


10. The highland area is the best place for pit latrine construction because

  1. it is easy for wall construction
  2. the bad smell will be far away from surface level
  3. it is not easily damaged
  4. water will be far away from the latrine itself
  5. the latrine will not overflow in a short time.
Choose Answer :


11. An outflow of ground water is known as

  1. Sea 
  2. Lake 
  3. Spring 
  4. Darn 
  5. River.
Choose Answer :


12. The necessary requirements for seed germination are

  1. soil, sunlight and water
  2. soil, air and water
  3. optimum temperature, water and oxygen
  4. optimum temperature, soil and sunlight
  5. water, soil and carbon dioxide.
Choose Answer :


13. A group of living things that live in both water and land is known as

  1. Amphibian 
  2. Arthropoda 
  3. Fish
  4. Birds 
  5. Mammals.
Choose Answer :


14. Which among the following organisms is not a mammal?

  1. Bat. 
  2. Whale.
  3. Lion
  4. Rabbit. 
  5. Crocodile.
Choose Answer :


15. Carefully study Figure 1 then answer the question that follows.

Figure 1

The organism which is shown in Figure 1 feeds on

  1. honey 
  2. flesh
  3. Grains
  4. aquatic food 
  5. decayed matter.
Choose Answer :


16. What kind of habitat suits a plant with characteristic features of the plant drawn in

  1. Heavy forest.
  2. In Water
  3. Grassland
  4. Desert.
  5. Mountains.
Choose Answer :


17.Why do some plants not shed their leaves during rain seasons?

  1. To conserve water
  2. To allow transpiration
  3. To conserve food 
  4. To conserve soil
  5. To make the soil fertile.
Choose Answer :


18.The diagram in Figure 3 shows a picture of a flower.

Which part attracts insects for pollination?

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


19. Electricity produced by a dry cell originates from which type of energy?

  1. Solar. 
  2. Mechanical. 
  3. Sound.
  4. Magnetic. 
  5. Chemical.
Choose Answer :


20. Kibata used 50 newtons to push a wall from morning to evening unsuccessfully, Which of the following is correct with regards to the action?

  1. He was dodging the work. 
  2. He used a lot of force
  3. He didn't do any work
  4. He did a good work
  5. He used little force.
Choose Answer :


21. If the angle of incident ray on the plane mirror is 60°, what is the value of the angle of reflection?

  1. 90°
  2. 40°.
  3. 30°.
  4.  60°
  5.  450.
Choose Answer :


22. Observe Figure 4 then answer the question that follows.

If electric current passing through the circuit is 5 amperes, the resistance of the wire in the circuit is ohm.

  1. 100 
  2. 50 
  3. 10 
  4. 0.4.
Choose Answer :


23.Mzee Juakali hang a bar magnet in the air. Which direction will the north pole of the magnet point to?

  1. South. 
  2. North. 
  3. East. 
  4. West. 
  5. North — East.
Choose Answer :


24.Musa spent 10 newtons to push a wheelbarrow a distance of 5 metres. The workdone by Musa was equivalent to how many Joules?

  1. 15. 
  2. 50. 
  3.  3. 
  4.  0.5.
  5.  5.
Choose Answer :


25.In a scientific investigation, what makes a person foresee the results?

  1. Realising a problem.
  2.  Long investigation.
  3.  Seeing by naked eyes. 
  4.  Doing experiment.
  5.  Touching something.
Choose Answer :


26.The experiment on seed germination was conducted as in Figure 5.

What is the important thing missing for seed germination?

  1. Water. 
  2.  Air.
  3. Soil
  4. Fertilizer. 
  5. Wind.
Choose Answer :


27. In scientific experiments, sense organs used to identify things are

  1. nose, eyes, skin, tongue and cars
  2. nose, ears, skin, legs and tongue
  3. ears, skin, nose, legs and arms
  4. ears, nose, skin, eyes and arms
  5. eyes, legs, tongue, cars and nose.
Choose Answer :


28. The following data were obtained after measuring the heights of five plants in cm: 10, 12, 15, 28 and 40. The average height of the plants in cm is

  1.  22 
  2.  50 
  3.  27 
  4.  38 
  5.  21.
Choose Answer :


29. What is the major purpose of producing different types of hybrid seeds?

  1. To reduce height of plants. 
  2.  To increase plants products.
  3.  To fasten plants growth. 
  4.  To obtain plants which tolerate draught.
  5.  To increase the height of plants.
Choose Answer :


30. Which one of the following instruments is used to measure length?

  1. Kilogram. 
  2. Centimetre. 
  3. Ruler.
  4. Volt. 
  5. Ampere.
Choose Answer :


31. The ozone layer is important in

  1.  increasing heat on the earth surface
  2.  decreasing sun rays reaching the earth
  3.  reducing the amount of carbon dioxide in the sky
  4.  increasing the amount of rainfall on the earth
  5.  decreasing coldness.
Choose Answer :


32. The most shining planet is

  1.  Mercury 
  2.  Earth 
  3.  Jupiter
  4.  Pluto 
  5.  Venus.
Choose Answer :


33. How many days does the earth take to make one revolution around the sun?

  1. 365 1/4. 
  2.  28. 
  3.  24. 
  4.  12. 
  5.  7.
Choose Answer :


34. The blood circulatory system is composed of the following:

  1. Heart, white blood cells and blood
  2. White blood cells, red blood cells and blood vessels 
  3. Heart, lungs and blood
  4.  Blood cells, water and heart
  5.  Heart, blood vessels and blood.
Choose Answer :


35. Waste products filtered by the kidney are carried to the gall bladder through a tube called

  1.  bronchiole 
  2.  urethra 
  3.  eusophagus
  4.  ureter 
  5.  fallopian.
Choose Answer :


36. Study figure 6 of the tooth then answer the question that follows

Letter Z in the figure represents____

  1.  enamel 
  2.  crown 
  3.  dentine
  4.  blood vessels 
  5.  gum.
Choose Answer :


37.Which part of the heart pumps blood to various parts of the body?

  1. Left auricle. 
  2. Left ventricle. 
  3. Right auricle.
  4.  Vena cava. 
  5.  Right ventricle.
Choose Answer :


38.Study Figure 7 and then answer the question that follows:

In which state of matter is the sugar inside the beaker?

  1. Liquid. 
  2.  Gas.
  3. Solid
  4. Element. 
  5. Compound.
Choose Answer :


39. Rusting of iron is an example of which change of state?

  1. Chemical. 
  2. Physical. 
  3. Colour.
  4. Liquid. 
  5. Mass.
Choose Answer :


40 Which among the following groups of food represents food rich in vitamin A?

  1. Orange, lime and lemon. 
  2. Carrot, milk and liver.
  3. Orange, yeast, beans.
  4.  Lime, orange, liver.
  5.  Fish, milk, lime.
Choose Answer :


41. Which measure should be taken to prevent malnutrition

  1.  Eating a lot of food.
  2.  Educating parents about quality food.
  3.  Keeping our environment clean.
  4.  Keeping our bodies clean and neat.
  5.  Eating fried food with a good smell.
Choose Answer :


42.If there is no change in the weight of matter, what name is given to such a change?

  1.  Chemical. 
  2.  Hardness. 
  3.  Physical.
  4.  Length. 
  5.  Width.
Choose Answer :


43.Marasmus is a type of malnutrition caused by

  1.  deficiency in calcium and phosphorus 
  2.  overfeeding
  3.  deficiency in iodine 
  4.  deficiency in protein
  5.  inadequate food which provides energy and heat to the body.
Choose Answer :


44. What type of nutrients are found in body building foods?

  1.  Protein. 
  2.  Cabohydrate.
  3. Vitamins
  4.  Minerals. 
  5.  Fat.
Choose Answer :


45. Study the following food chain then answer the following question.

PLANT → BUFFALO → CHEETAH.

In this food chain, what will happen if cheetah will migrate from the environment?

  1. Plants will dry out. 
  2. The number of buffalos will decrease.
  3.  Plants will increase. 
  4.  Plants will decrease.
  5.  Buffalo will migrate away too.
Choose Answer :


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