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SECTION A

Answer all the questions.

Every question is followed by four answersA, B, CandD. Choose the correct answer. Then, blackenyour answer on the answer sheet provided. The suggested time for this section is 45 minutes. If you areunable to answer a question, proceed to the next question.

1 The diagram below shows the common shapes that are used in designing a structure.

Which of the following is true about shapes X, Y and Z ?

X Y Z

A Pyramid Cuboid Sphere

B Cone Cube Cylinder

C Sphere Cone Cylinder

D Cylinder Pyramid cone

2 Which of the following shapes is not used as pillar ?

A CubeB PyramidC CuboidD Cylinder

3 The diagram below shows a skeletal structure for a construction.

When the construction of the structure is finished, what is the shape it formed ?

A ConeB SphereC CuboidD Pyramid

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4 The diagram below shows two structures.

Which of the following is true about the shapes of P and Q ?

P Q

A Cylinder, cone Cube, pyramid

B Pyramid, cube Cone, cuboidC Sphere, cylinder Pyramid, cylinder

D Cuboid, cylinder Sphere, cube

5 The diagram below shows three common shapes that are used as a roof for a structure.

These shapes are suitable as roof because they

A give a beautiful structure.B are easier for the rain water to flow.C give a stable structure.D are easy to make by craftsman.

6 Which of the following structure is cuboid in shape ?

2

C

B

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7 The diagram below shows a few types of objects.

J K L

Which of the following is true for the shapes of the objects shown above ?

J K L

A Cuboid Sphere CylinderB Cube Cone Sphere

C Sphere Cube Cylinder D Cylinder Cuboid Cone

8 Which of the following structure has the shape of a cylinder ?

A Box C BallB Test tube D Skittle

9 A pupil is listing the buildings below in his scrap book.

All the buildings are similar because they have shapes of a

A cone. C cube.B cylinder. D pyramid.

3

Yayasan Sabah building

KOMTAR Tower in Penang

Clock Tower in Teluk Intan

Pisa Tower in Rome

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10 A pupil explains a structure he seen as follows.

Which of the following is similar to the shape of the structure described ?

A C

B D

11 The vibrations of an earthquake are greater danger to high rise buildings than to low raise buildingsbecause

A the lower structure is more stable.B the high structure can increase the vibrations of the earthquake.C rescue work is difficult for higher buildings.D the stability of building structures is not related to height.

12 What is meant by a stable structure ?

A A structure that does not easily collapse easilyB A structure that can support a heavy load

C A structure that is built with different shapesD A structure that is big and high

13 The picture below shows a lighthouse.

The lighthouse is built with a cylindrical shape to make it more stable. This is because, thecylindrical shape

A is easier for it to be seen by ships.B reduces the effect of wind.C can prevent the lighthouse from being flooded by water.D can reduce vibrations of the tides.

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This building is built with round and flat base.Its top becomes smaller sloping to a point.

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14 Which of the following shapes is least stable ?

15 Which of the following can make a structure more stable ?

A Raise the height of the structureB Reduce its diameter

C Increase its base areaD Construct a spherical roof

16 The diagram below shows three objects with the same height.

Which of the following shows the correct sequence in increasing stability ?

A X, Y, ZB Y, X, ZC Y, Z, XD Z, X, Y

17 The picture below shows three types of vehicles.

5

C

B

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Which of the following statements are true ?

I R is more stable than S.II R is more stable than T.III T is more stable than S.

A I and II onlyB I and III onlyC II and III only

D I, II and III

18 Which of the following explains the characteristics of a strong structure ?

I Not easily collapsibleII Have wide base areaIII Can support a heavy load

A I and II onlyB I and III onlyC II and III onlyD I, II and III

19 The diagram below shows three models with the same shape.

What will happen to their stabilities if models L, M and N have the same height ?

A L becomes the stable model.B N is more stable than M.C M is more stable than L.D M and N have the same stability.

20 The diagram below shows a model of structure.

Which of the following steps can make it stronger ?

A Use the cylinder shape of the legsB Raise the height of the legs of the modelC Add more legsD Reduce the size of the legs

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21. The most stable cuboid is the one that has the base area of

A. 4 cm C. 150 cmB. 40 mm D. 150 mm

22. Read the information below.

The information shown above is related to

A. Strength of objectB. Stability of objectC. Condition of objectD. Quality of object

23. Which statement is true ?

A. Bridges are stronger if they are built in the shape of an arch.

B. The bigger the base area of a model, the lower the stability of the model.C. The lower the height of a model, the lesser the stability of the model.D. The decrease in height of a model will result in decrease in stability of the model..

24.

Based on diagram above, what factors influence the stability of an object ?

I. The weight of the object.II. The shape of the object.III. The base area of the object.IV. The type of material used to make the object.

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

25. Diagram below shows three stools J, K and L.

Arrange the stools beginning from the least stable to the most stable.

A. K, L, J C. L, K, JB. J, K, L D. K, J, L

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Base area , Area

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26.

Which of the following can improve the stability of object S ?

A. By inverting it.B. By making it lighter.C. Filling it with water.D. Placing it on the floor.

27. Diagram below shows a structure.

Which of the following is similar in stability as the structure shown above ?

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28.

How can the structure in the diagram above be strengthened ?

I. By shortening the legs.II. By spreading the legs apart.III. By enlarging the base area.IV. By using light materials to make the legs.

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

29. What does the strength and stability of the stools show in diagram 20 depend on?

Diagram 20

I. SizeII. ShapeIII. HeightIV. Base area

A. I and II onlyB. II and III onlyC. III and IV onlyD. II, III and IV only

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30. The structure shown in the diagram below is tall and strong.

What is your inference regarding its stability?

I. It has a wide base.II. It has suitable shapes.III. It has a strong foundation.IV. It is built of concrete and steel

A. I and II onlyB. III and IV onlyC. I, II and III onlyD. II, III and Iv only

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SECTION B

( 20 MARKS )

The time suggested for this section is 30 minutes. If you are unable to answer a question, proceed to thenext question. Answer all questions..

1 A group of pupils arrange the models as shown in the diagram below to investigate the stability ofthe structures.

When the cardboard is inclined slowly, the pupils have recorded their observation as follows :

i. Model Z toppled over first followed by model Y.ii. Model Y toppled over first followed by model X.

(a) State the aim of this investigation.

_______________________________________________________________________( 1 mark )

(b) Write a hypothesis based on the aim of your investigation stated in (a).

_______________________________________________________________________( 1 mark )

(c) State the followingi. Things to change: __________________________________________________

ii. Things to observe: __________________________________________________( 2 marks)

(d) What is the conclusion from this investigation ?

_______________________________________________________________________

_______________________________________________________________________( 1 mark )

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models of polystyrene

cardboard

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2 The diagram below shows a model that is built by a pupil using coins.

(a) What is the base shape of the model ?

________________________________________________________________________( 1 mark )

(b) What makes the model stable ?

________________________________________________________________________( 1 mark )

(c) Another model is built by the pupil as shown in the diagram below.

What can you say about the stability of this model ?

________________________________________________________________________( 1 mark )

(d) Give one reason for your opinion in (c).

________________________________________________________________________( 1 mark )

(e) What conclusion can you make from this investigation?

________________________________________________________________________( 1 mark )

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5 sen coin

10 sen coin

20 sen coin

50 sen coin

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3.

( 5 marks)

4. Diagram 2 shows three baskets which are on a table.

(a) Which basket will fall first if the table is tilted (shacked) ?

________________________________________________________________________( 1 mark )

(b) What is the aim of the investigation ?

________________________________________________________________________( 1 mark )

(c) From the investigation above, state what is

i. Kept the same : ____________________________________________________

ii. Observed : ____________________________________________________

iii. Changed : ____________________________________________________( 3 marks)

THE END

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