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 HoursMonday, 6" September 2010 o.m.
This paper consists of 50 questions in sections A and B.
Answer all questions.
MI answers must be written in the answer sheet provided.
Cellular phones arc not allowed in the examination room.
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?
Helps to build muscles.
Prevents the body from being attacked by diseases regularly.
Causes high blood pressure.
Entertains the body.
Maintains body health.
Choose Answer
2. Water mixed with sugar and salt is the first aid given to a patient suffering from
malaria and headache
diarrhoea and vomiting
meningitis and typhoid
tuberculosis and flue
broken leg or hand.
Choose Answer
3. One of the following diseases is not sexually transmitted:
AIDS
Trichonoma
Syphilis
Clamedia
Trichoma.
Choose Answer
4. Which of the following vitamins is made in the body in the presence of sunlight?
Vitamin A.
Vitamin B.
Vitamin C.
Vitamin D.
Vitamin E.
Choose Answer
5.What is the importance of vaccination to human beings?
Reduces pain.
Cures illness.
Prevents diseases.
Replaces vitamins and minerals in the body.
Replaces worn out cells in the body.
Choose Answer
6. What type of bacteria causes tuberculosis?
All of those present in air.
Basilli.
Plasmodium.
Fungus.
Amoeba.
Choose Answer
7.Factories are not supposed to be built near human settlements because
their construction occupies big area
large part of factory effluents contain poisonous chemicals
factory machines make loud noise which can affect ear drums
factories make people to shift from their settlement
factory owners do not keep their environment clean.
Choose Answer
8.The following activities destroy water sources except
cutting of trees
burning of forests
overgrazing along water sources
throwing chemical rubbish into water sources
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
ocean
rivers
lakes
dams
ponds.
Choose Answer
10. The highland area is the best place for pit latrine construction because
it is easy for wall construction
the bad smell will be far away from surface level
it is not easily damaged
water will be far away from the latrine itself
the latrine will not overflow in a short time.
Choose Answer
11. An outflow of ground water is known as
Sea
Lake
Spring
Darn
River.
Choose Answer
12. The necessary requirements for seed germination are
soil, sunlight and water
soil, air and water
optimum temperature, water and oxygen
optimum temperature, soil and sunlight
water, soil and carbon dioxide.
Choose Answer
13. A group of living things that live in both water and land is known as
Amphibian
Arthropoda
Fish
Birds
Mammals.
Choose Answer
14. Which among the following organisms is not a mammal?
Bat.
Whale.
Lion
Rabbit.
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
honey
flesh
Grains
aquatic food
decayed matter.
Choose Answer
16. What kind of habitat suits a plant with characteristic features of the plant drawn in
Heavy forest.
In Water
Grassland
Desert.
Mountains.
Choose Answer
17.Why do some plants not shed their leaves during rain seasons?
To conserve water
To allow transpiration
To conserve food
To conserve soil
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.
2.
3.
4.
5.
Choose Answer
19. Electricity produced by a dry cell originates from which type of energy?
Solar.
Mechanical.
Sound.
Magnetic.
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?
He was dodging the work.
He used a lot of force
He didn't do any work
He did a good work
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?
90°.
40°.
30°.
60°.
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.
100
50
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?
South.
North.
East.
West.
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?
15.
50.
3.
0.5.
5.
Choose Answer
25.In a scientific investigation, what makes a person foresee the results?
Realising a problem.
Long investigation.
Seeing by naked eyes.
Doing experiment.
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?
Water.
Air.
Soil
Fertilizer.
Wind.
Choose Answer
27. In scientific experiments, sense organs used to identify things are
nose, eyes, skin, tongue and cars
nose, ears, skin, legs and tongue
ears, skin, nose, legs and arms
ears, nose, skin, eyes and arms
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
22
50
27
38
21.
Choose Answer
29. What is the major purpose of producing different types of hybrid seeds?
To reduce height of plants.
To increase plants products.
To fasten plants growth.
To obtain plants which tolerate draught.
To increase the height of plants.
Choose Answer
30. Which one of the following instruments is used to measure length?
Kilogram.
Centimetre.
Ruler.
Volt.
Ampere.
Choose Answer
31. The ozone layer is important in
increasing heat on the earth surface
decreasing sun rays reaching the earth
reducing the amount of carbon dioxide in the sky
increasing the amount of rainfall on the earth
decreasing coldness.
Choose Answer
32. The most shining planet is
Mercury
Earth
Jupiter
Pluto
Venus.
Choose Answer
33. How many days does the earth take to make one revolution around the sun?
365 1/4.
28.
24.
12.
7.
Choose Answer
34. The blood circulatory system is composed of the following:
Heart, white blood cells and blood
White blood cells, red blood cells and blood vessels
Heart, lungs and blood
Blood cells, water and heart
Heart, blood vessels and blood.
Choose Answer
35. Waste products filtered by the kidney are carried to the gall bladder through a tube called
bronchiole
urethra
eusophagus
ureter
fallopian.
Choose Answer
36. Study figure 6 of the tooth then answer the question that follows
Letter Z in the figure represents____
enamel
crown
dentine
blood vessels
gum.
Choose Answer
37.Which part of the heart pumps blood to various parts of the body?
Left auricle.
Left ventricle.
Right auricle.
Vena cava.
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?
Liquid.
Gas.
Solid
Element.
Compound.
Choose Answer
39. Rusting of iron is an example of which change of state?
Chemical.
Physical.
Colour.
Liquid.
Mass.
Choose Answer
40 Which among the following groups of food represents food rich in vitamin A?
Orange, lime and lemon.
Carrot, milk and liver.
Orange, yeast, beans.
Lime, orange, liver.
Fish, milk, lime.
Choose Answer
41. Which measure should be taken to prevent malnutrition
Eating a lot of food.
Educating parents about quality food.
Keeping our environment clean.
Keeping our bodies clean and neat.
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?
Chemical.
Hardness.
Physical.
Length.
Width.
Choose Answer
43.Marasmus is a type of malnutrition caused by
deficiency in calcium and phosphorus
overfeeding
deficiency in iodine
deficiency in protein
inadequate food which provides energy and heat to the body.
Choose Answer
44. What type of nutrients are found in body building foods?
Protein.
Cabohydrate.
Vitamins
Minerals.
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?
Plants will dry out.
The number of buffalos will decrease.
Plants will increase.
Plants will decrease.
Buffalo will migrate away too.
Choose Answer
SECTION B
Answer questions 46 — 50 by writing a single word in the answer sheet provided.
46. Sound that has been reflected and heard again is called______________