science

Portal Pendidikan Utusan 2007 © Hak Cipta Terpelihara Utusan Melayu (M) Berhad, Kuala Lumpur

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Portal Pendidikan Utusan UPSR Trials 2008 SCIENCE (SET 1)

Time: 1 Hour 15 Minutes

SECTION A (30 marks)

Answer ALL question. 1. Which of the following is not a life process in animals? A Growth B Breathing C Movement D Make food 2. The diagram shows the respiratory organ of a fish.

What is structure X?

A Gill B Lung C Air tubes D Moist skin

3. The diagram shows a food web.

Which of the following will happen if the population of the tiger and the snake decreases?

A The population of grass increases. B The population of the deer decreases. C The deer and rabbits leave the habitat. D The population of the deer and the rabbit increases.


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4. Which of the following is correctly paired?

Animal Type of shelter A Bat Trees B Bear Caves C Frog Sea D Grasshopper Pond

5. The diagram shows two animals.

What do both animals have in common? A They both breathe through lungs. B They both reproduce by laying eggs. C They both can change their body colour to match their surrounding. D They both release bad smell to protect themselves from enemies. 6. The diagram shows a type of bird.

Based on its beak, the bird most probably eats I small animals II plants III fruits A I only B II only C II and III only D I, II and III


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7. The table below shows the properties of material X.

Properties of material Conduct electricity X Float in water Can be stretched X Allow light to pass through

Which of the following is X? A Aluminium foil B Wooden spoon C Clear plastic D Rubber glove 8. The diagram shows the reading of the volume of water in a measuring cylinder when 5 marbles are put in it.Given that all the marbles are of the same size, how many marbles are put in the measuring cylinder when the measuring cylinder shows a reading of 100 cm³ ?

Number of marbles Volume of water (cm³ ) 0 40 5 60

A 10 B 15 C 20 D 25

9. The information above describes a microorganism. Which of the following is the microorganism?

• The tiniest of microorganisms

• Live on living things only


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A B C D

10. Why does the phenomenon shown below happens?

I Object X expands when illuminated by light. II Object X is opaque in nature. III Light travels in a straight line. IV Light is reflected by object X.

A. I and III only B. II and III only C. I, II and III only D. II, III and IV only


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11. The diagram shows a boy breathing onto the surface of a mirror.

The mirror turns cloudy because A it became warm. B warm air has mixed with cold air. C it loses heat to the surrounding air. D warm air has condensed on the much cooler mirror.

Type of surface Distance travelled (cm) X 300 Y 150 Z 50

12. A marble is rolled with the same force on two different types of levelled surface.

The distance traveled by the marble is shown in the table above. What can you conclude from this investigation?

A The frictional force on Surface X is greater than the frictional force on Surface Y. B The frictional force on Surface X is the greatest. C The frictional force on Surface Y is greater than the frictional force on Surface Z D Surface Z has the greatest frictional force.


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13. The diagram shows the classification of materials based on their basic source. M N Which of the following can be grouped under M and N? M N A Pencil Pen B Silk cloth Frying Pan C Mengkuang mat Iron nails D Fur coat Glass 14. The diagram shows a fruit and some information on the fruit.

Which of the following desribes the chemical characteristics of the fruit? A X and Y only B Y and Z only C X and Z only D X, Y and Z 15. The diagram shows a plant.

X - Can be made into a juice Y - Changes blue litmus paper red Z - Sour taste

Eraser Wooden table

Gold ring Drinking glass


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Which of the following plants reproduce in the same way as the plant shown above? A Strawberry B Bryophyllum C Tapioca D Banana

16. The stability of the chair can be increased by

I increasing its height. II increasing its weight. III increasing the area of its base. IV increasing the number of its legs. A I and II only B II and III only C II and IV only D I, II and III only

17. Liquid P has a boiling point of 78 oC. At which of the following states

is liquid P at 85 oC?

A solid B liquid C gaseous D solid and liquid

18. 4 pieces of meat each weighing 100g is placed in 4 different

situations below.

P - placed in the science lab Q - placed in the freezer R - rubbed with 30gm of salt and placed in the science lab S - rubbed with 20g of salt and dried in the sun. Arrange the pieces of meat in order of which would turn bad first. A. P R Q S B. Q R S P C. P R S Q D. S P R Q


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19. The diagram shows two cans of milk P and Q that are placed in a science lab.

After 3 days it was found that Milk Q has gone sour whereas Milk P remains fresh. What conclusion can be made from this investigation?

A Milk will turn sour when exposed to air. B The unopened tin can has no bacteria. C Bacteria cause the milk to turn sour. D Bacteria are present in air.

20. The diagram shows a Layer X that surrounds the Earth.

Which of the following is true about Layer X? I It contains water vapour II It contains oxygen gas III It contains hydrogen gas IV It contains carbon dioxide gas A I and II only B II and IV only C II,III and IV only D I, II and IV only


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21. The diagram below shows some nails which are placed on a magnet covered by a piece of cloth. The nails remained stuck to the magnet and did not fell.

The above situation can be used to describe the

A. Earth’s gravitational pull B. centre of the Earth C. Earth’s atmosphere D. layers of the Earth

22. Arrange R, S and T according to ascending degree of hotness.

A. R, S and T B. S, T and U C. T, R and S D. T, S and R

23. An experiment was carried out as shown below.

R - core S - mantel T - Earth crust


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Miranda found out that the light from the torch light is reflected by the plane mirror and then falls on the globe. Which of the following celestial bodies is represented by the mirror? A Asteroid B Comet C Meteor D Moon

24. Which of the following statements is true about the eclipse of the Sun?

A. Light from the sun is blocked by the moon. B. The light from the Sun does not shine on the moon. C. The Earth’s shadow covers the surface of the moon. D. The moon’s shadow covers part of the Earth’s surface.

25. Which of the following statements is true about technology? I Applying scientific knowledge to overcome human’s limitation II Using scientific knowledge to invent machines. III Using scientific knowledge to improve the civilisation of men.

A. I and II only B. I and III only C. II and III only D. I, II and III

26. Mr Wong couldn’t see clearly the small letters on a packet of food. Which of the

following tools is the most suitable to be used to solve his problem?

A Using a microscope B Using a hand lens C Using a binocular. D Using a plane mirror. 27. Which of the following tools uses the principle of a lever?

I II


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III IV

A. I only B. II and III only C. III and IV only D. I, III and IV only

28. The diagram below shows the number of organisms in a particular food chain.

Which of the following organisms is most probably a producer? A R only B Q only C P and Q only D P, Q and S only 29. The diagram shows an experiment carried out by a group of students.


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What will happen if the experiment is carried out for 5 minutes?

I The temperature of water increases II The light bulb feels hot III Heat energy is produced IV The dry cell loses power.

A I and III only B I, II and III only C I, II and IV only D I, II, III and IV

30. The diagram shows a type of simple machine.

Which of its parts below is correctly labelled? Fulcrum Effort Load A P Q R B Q R P C Q P R D R P Q


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SECTION B Structural Questions

Answer ALL the following questions.

Question 1

A group of students carried out an investigation to compare the time taken for bread mould to grow when different volumes of water are placed on 3 pieces of bread of similar type and size.

Container Volume of water (ml)

Time taken for the bread mould to grow

(hr) A 10 72 B 20 48 C 30 24

Table 1 shows the results of the investigation. a. State the hypothesis that can be tested for this investigation. ……………………………………………………………………………….. ……………………………………………………………………………….. (2 marks) b. State the pattern of bread mould growth. ……………………………………………………………………………….. (1 mark) c. Predict the time taken or the bread mould to grow if 15 ml of water is placed on the bread. ……………………………………………………………………………….. (1 mark) d. State other factors that influence the growth of bread mould. ……………………………………………………………………………….. (1 mark)

Table 1


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Question 2

Diagram 1

Diagram 1 shows the apparatus and materials used in an investigation. A small pail of water is used to water three plants of the same species everyday for a period of 2 months. All three plants are three weeks old at the time of the investigation. a. What is the purpose of this investigation? ……………………………………………………………………………………………… ………………………………………………………………………………………………

(1 mark) b. Based on the experiment, state the following variables.

(i) Manipulated variable

………………………………………………………………………………

(ii) Responding variable

………………………………………………………………………………

(iii) Fixed variable

……………………………………………………………………………… (3 marks)

c. Write a hypothesis for the experiment based on the purpose of the experiment

you stated in (a). ……………………………………………………………………………………… ………………………………………………………………………………………

(1 mark)


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Question 3 Time (min)

0

1

2

3

4

5

6

Container R (oC)

90

85

78

69

57

42

32

Container S (oC)

90

87

83

80

78

74

68

Table 2 Table 2 shows the changes that occur on Liquid T for a total of 6 minutes after being placed in Container R and Container S.

a. What do you understand by the decrease in temperature in container R and S? …………………………………………………………………………………… ( 1 mark ) b. Give 2 inferences with regards to the decrease in temperature in Container R. i. ………………………………………………………………………………… ii. ………………………………………………………………………………… ( 2 marks)

c. What could be done to prevent the temperature of a liquid from decreasing abruptly? …………………………………………………………………………………… …………………………………………………………………………………...

( 2 marks )


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Question 4

Table 3

2. Table 3 shows the information gathered from an investigation carried out at

Pond P and Pond Q for the same period of time.

a. State one inference to explain the difference in the condition of the fish in Pond P and Pond Q.

……………………………………………………………………………………. ( 1 mark )

b. State one other observation that can support the inference you named in (a).

……………………………………………………………………………………. ( 1 mark ) c. Propose a hypothesis based on the inference that you made in (c). ……………………………………………………………………………………. ( 1 mark ) d. State one information that is fixed in this investigation. ……………………………………………………………………………………. ( 1 mark )

The investigation also discovered that there are more species of plants in Pond Q compared to Pond P.

e. Based on the information above, build a hypothesis that relates this

information with the number of species of fish in the pond. …………………………………………………………………………………… ( 1 mark )

- END OF QUESTIONS PAPER -

Pond P

Pond Q

Average size of fish / g 850

1200

Number of fish species 6

10


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Answers SECTION A 1. D 2. A 3. D 4. B 5. D 6. A 7. C 8. B 9. C 10. B 11. D 12. D 13. C 14. B 15. B 16. B 17. C 18. C 19. A 20. D 21. A 22. D 23. D 24. A 25. D 26. B 27. D 28. A 29. D 30. C SECTION B 1. a. The greater the volume of water, the lesser is the time taken for the bread mould to grow. b. Descending c. 60 hours d. Surrounding temperature


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2. a. To investigate the relationship between the type of water used to water the plant and the condition of the plant

b. Type of water used to water the plant Condition of the plant Type of plant

c. If the water used to water the plant contains minerals , the plant will grow better/at a faster rate

3. a. The decrease in temperature in Container R is faster than in

Container S. b. (i) Because ice is placed in the container. (ii) Because cold water is placed in the container. c. Placed the liquid in a container that is a poor conductor of heat/close the container/cover the container/wrap the container 4. a. The number of species of fish in Pond P is less than in Pond Q because Pond P is more polluted than Pond Q.

b. The size of the fish in Pond P is smaller than the size of fish in Pond Q. c. The more polluted the pond, the less is the number of species of fish that

could be found in the pond.

d. Period of investigation.

e. The more species of aquatic plants found in the pond, the greater is the number of species of fish in the pond.

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