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
This paper consists of fifty (50)questions.
Answer allthe questions.
Read all the given instructions in the special answer sheet (OMR)and fill in allthe required information.
Write your Examination Numberand then shade the digitsof the number in therespective place in your answer sheet.
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:
If you have to change your answer, you must rub out the shading very neatlybefore shading the new one. Use a clean rubber.
Use HB pencilonly.
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?
Chicken pox
Diarrhoea
Whooping cough
Malnutrition
Typhoid.
Choose Answer
2. Which of the following is not found in the blood system?
Bronchiole
Valve
Auricle
Capillary
Artery.
Choose Answer
3. Which of the following should be considered before attending a person suffering from AIDS?
Wear clean clothes
Wash yourself with soap
Wear gloves
Pray
Allow him/her to rest.
Choose Answer
4. Which of the following is a characteristic of clean and safe water?
Fetched from wells
Stored and cooled in a water pot
Filtered and stored in clean container
Boiled, filtered and stored in clean container
Without a lot of soda ash.
Choose Answer
5. Which of the following diseases does not have a vaccine?
Tuberculosis
Tetanus
Measles
Whooping cough
Trachoma.
Choose Answer
6. The gas used by plants to manufacture proteins is
carbon dioxide
hydrogen
oxygen
nitrogen
natural gas.
Choose Answer
7. The amount of water lost by plants increase due to the presence of whichcondition in the environment?
Heat and water vapour
Water vapour and light
Wind and sun rays
Clouds and wind
Water vapour and wind .
Choose Answer
8. People are likely to cause soil erosion if they do one of the following:
Cut down trees
Add manure to the soils
Plant grass
Make terraces on sloppy ground
Plant trees.
Choose Answer
9. Agriculture, livestock keeping and mining are activities done by human beingsand all depend on
rivers
springs
land
irrigation
wind.
Choose Answer
10. A chameleon usually changes its colour in order to
search for food
breath
reproduce
observe enemies
. Protect itself
Choose Answer
11. How many stages are there in the growth of a cockroach?
Two
Three
Four
Five
Six.
Choose Answer
12. Which of the following does not have vertebral column?
Spider
Bat
Cat
Man
Chicken.
Choose Answer
13. One of the functions of the muscles in the body is to
prevent bleeding
cause various movements
produce red blood cells
hold the teeth in place
E transport blood in the body.
Choose Answer
14.Human bones are joined in order to
prevent breakage
make them of the same size
enable them to bend easily
make the shape of the body
enable them to straighten.
Choose Answer
15. Which of the following bend when passing from one medium to another?
Rainbow
Parallel lines
Light ray
Lens focus
A ray and lens focus.
Choose Answer
16. In the light spectrum, the colour which bends earlier than others is
red
yellow
indigo
blue
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?
2
3
5
4
1.
Choose Answer
18. The sky looks blue because
air and water are bluish
red colour is dispersed more than blue colour
vision power decreases
blue colour is dispersed more than other colours
during sunset, the sun appears yellowish.
Choose Answer
19. Which of the following items does not use magnet?
Loud speaker
Telephone
Radio
Mobile phone
Iron.
Choose Answer
20. The unit of work is
Kilogram
Newton
Tonne
Joule
Gram.
Choose Answer
21. In the normal procedure, the first stage to be followed when conducting a
scientific experiment is
to start an experiment
data collection
problem identification
data analysis
interpretation of results.
Choose Answer
22. The third stage in a scientific experiment is
data analysis
interpretation of results
preparation and starting the experiment
data collection
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
acid
ash
water
fat
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
acid
ash
water
fat
spirit.
Choose Answer
25. What will happen if NORTH and NORTH magnetic poles approach each other?
They will strongly attract each other
They will attract each other towards one direction
They will repel
Nothing will happen
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?
4g
10g
5g
2.5g
25g.
Choose Answer
27. The concept of reflection of light is manifested in one of the following things:
Microscope
Television
Watch
Bulb
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
3 only will remain alight
1 and 3 will remain alight
1only will remain alight
1 and 3 will blow
3 will blow.
Choose Answer
29. Presence of living organisms, water and air is a characteristic of which of thefollowing planets?
Mars
Jupiter
Venus
Earth
Saturn.
Choose Answer
30. The earths axis is inclined at which degrees?
60
181/2
32 1/2
251/2
231/2.
Choose Answer
31. Which of the following revolves around the earth from west to east?
Sun
Star
Moon
Meteor
E Planet.
Choose Answer
32. A person having swollen neck gland (goitre) has a deficiency of which mineralsalt?
Calcium
Iodine
Potassium
Phosphorus
Limestone.
Choose Answer
33. Carefully observe Figure 3 and answer the question that follows:
Which letter in Figure 3 represents the uterus?
C
D
E
A
B.
Choose Answer
34. One of the functions of the bones is to manufacture
blood platelets
blood plasma
white blood cells
red blood cells
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?
Iron minerals
Phosphorus minerals
Calcium minerals
Iodine minerals
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?
The front brain
The hind brain
The mid brain
The front and hind brain
The mid and hind brain.
Choose Answer
37.The function of thespinal cord in thehuman nervoussystem is to
deal with involuntary actions
deal with voluntary actions
Ccoordinate movement of the body
maintain the shape of the body
transport impulses to thecentral nervous system.
Choose Answer
38. High tide and low tide in oceans and great lakes is caused by
revolution of the earth around the sun
rotation of the earth on its axis
moon eclipse
solar eclipse
attraction force between the earth and the moon.
Choose Answer
39. Under normal circumstances. rust is the result of a chemical reaction between
copper, water and oxygen
sodium_water and oxygen
calcium, water and oxygen
iron, oxygen and water
water, oxygen and potassium.
Choose Answer
40. Vegetables and fruits help in the formation of
red blood cells
white blood cells
blood platelets
blood plasma
bone marrow.
Choose Answer
41. The following methods can be used for food preservationexcept
baking
using honey
Drying
Salting
Using water.
Choose Answer
42. The following are types of food nutrients except
mineral salts
vitamins
water
Protein
Carbohydrates
Choose Answer
43. Which of the following foods canbe preservedby deep freezing?
Fruits and vegetables
Vegetables and meat
Fish and fruit
Meat and fish
Meat and grain.
Choose Answer
44. The deficiency disease caused by lack of iron in the diet is
rickets
kwashiorkor
anaemia
marasmus
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
build up the body
give energy to the body
protect the body
generate heat to the body
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
the fish is not stationary in the water
the water is calm and clean
the depth of water is reduced by the light rays
fish scales make it appear big
light rays are refracted in the water.
Choose Answer
47. The correct food chain is
eagle grass leopard goat
grass eagle leopard goat
leopard eagle grass goat
grass goat leopard eagle
eagle leopard goat grass.
Choose Answer
48. The three main parts of the circulatory system are
arteries, veins and capillaries
blood, heart and lungs
blood, blood vessels and heart
blood vessels, heart and valves
heart, aorta and arteries.
Choose Answer
49. Man uses the following sensory organs when doing scientific investigation:
Tongue, eyes, nose, skin, ears
Brain, nose, eyes, sensory nerves
Brain, nose, ears, eyes, skin
Brain, tongue, eyes, skin, ears
Eyes, skin, ears, sensory nerves.
Choose Answer
50. Which of the following hormones when insufficient cause defect in female reproductive system?