Pmr Science Paper 1 Set 1

55/1 Science Paper 1 July 2006 1 hour

Set 1 JABATAN PELAJARAN NEGERI PERAK _______________________ PENILAIAN MENENGAH RENDAH 2006 Learning To Score

SCIENCE Paper 1 1 hour

DO NOT OPEN THE QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO

1. This question paper consists of 40 questions. 2. Answer all questions. 3. Answer each question by blackening the correct space on the answer sheet. 4. Blacken only one space for each question. 5. If you wish to change your answer, erase the blackened mark that you have made. Then blacken the space for your new answer. 6. The diagrams in the questions provided are not drawn to scale unless stated. 7. You may use a non-programmable scientific calculator.

This question paper consists 15 printed pages.

___________________________________________________Learning To Score 2006 Answer all questions 1

The figure shows the outline of an irregular shape.

1cm 1cm The approximate area of the object is A B C D 2

21 cm2 23 cm2 25 cm2 27 cm2

The figure shows a method to determine the volume of material X.

Material X is probably made of A B C D 3

wax metal copper polystyrene

Which substance contains particles that are arranged in fixed position? A B C D

Oil Wood Alcohol Hydrogen

Unit Kurikulum Jabatan Pelajaran Perak

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4

Table above shows the substances and it’s densities. Substances Iron Wood Petrol Silver Glycerine

Density ( g/cm³ ) 7.80 0.50 0.80 10.5 1.30

Which substance will float in petrol ? A B C D 5

Iron Silver Wood Glycerine   

Dull surface Brittle Poor Heat Conductor

Which of the following substance has the above properties? A B C D

Iron Calcium Sulphur Magnesium

Unit Kurikulum Jabatan Pelajaran Perak

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The figure shows the condition of a slice of bread after a few days.

What can you infer from this observation? A B C D

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Bread contains water Bread produces fungi Air contains water vapour Air contains microorganisms

The figure shows an experiment to find the percentage of oxygen used by a burning candle.

When the candle extinguishes, the percentage of oxygen used is A B C D

16.7% 20.0% 40.0% 66.7%

Unit Kurikulum Jabatan Pelajaran Perak

4

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8

Which of the following energy sources are non-renewable? A B C D

9

Which of the following methods of water purification causes water to lose its minerals? A B C D

10

Solar Hydro Waves Nuclear

Boiling Filtration Distillation Coagulation

The figure shows the cross section of the human eye. A C B D

Which of the labeled is the part that most sensitive to light? 11

A student carries out an experiment to study the sensitivity of the finger tips, back of the hand and the elbow. The different parts of the body are touched with one pin and then two pins. The result of the experiment is shown in the following table. Part of the body Finger tips Back of the hand Elbow

Result Using 1 pin Correct answer Wrong answer Wrong answer

Using 2 pins Correct answer Wrong answer Wrong answer

What is the conclusion for the experiment? A B C D

The receptors in the finger tips are closely arranged. The back of the hand and the elbow do not have receptors. The fat layer in the finger tips is lesser than that in the back of the hand and the elbow. The receptors in the finger tips are more sensitive than that in the back of the hand and the elbow..

Unit Kurikulum Jabatan Pelajaran Perak

5

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12

The figure shows that X is one of the classes of food.

Proteins

Fibre

Fats Minerals

Classes of foods Vitamins

Water

X

What is the main function of X? A B C D 13

Maintains good health Supplies most of the energy to do works Keeps us warms and protects our organs Needs for growth and repairs damage tissues

A student carries out an experiment as shown in the procedures. Step 1 : Step 2 : Step 3 : Step 4 : Step 5 :

Add 5 drops of ethanol to the sample of food. Shake the mixture. Add an equal amount of water to the mixture. Shake the mixture and allow it to stand for about 2 minutes. Observe any changes after 2 minutes.

Which type of food is tested by the student? A B C D

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Oils Starch Proteins Glucose

The circles in the figure show two characteristics of an animal.

Warm-blooded

X

Lay eggs

X represents the animal which has both characteristics. What is X? A B C D

A cat A frog A pigeon A crocodile

Unit Kurikulum Jabatan Pelajaran Perak

6

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The figure shows a pyramid number.

D

C B A

Which of the following A, B, C or D has the highest energy content? 16

The equation shows how a water molecule can be broken down into its components.

Water molecule

P

Hydrogen + Oxygen

Which of the following represents process P? A B C D

Melting Filtration Distillation Electrolysis

Unit Kurikulum Jabatan Pelajaran Perak

7

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The gas released in the following figure makes a `pop’ sound when tested with a lighted splinter.

lighted splinter solution X magnesium tape Which of the following may be the pH value of solution X? A B C D 18

1 7 8 14

The figure shows a drinking straw in a glass of water.

P Q R S

Where could a hole be made to enable the water to be sucked up ? A B C D

P Q R S

Unit Kurikulum Jabatan Pelajaran Perak

8

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Which of the following instruments uses air pressure to function? Dropper I II Spraying pump III Rubber suckers A B C D

20

I and II only I and III only II and III only I, II and III

Which of the following cases is a force acting on an object?

A car coming to a stop. I II A girl moving down a slide. III An apple falling to the ground. A B C D 21

I and II only. I and III only. II and III only. I, II and III.

The figure shows the biggest animal on land.

Which of the following support system related to the animal? A B C D 22

Exoskeleton Endoskeleton Water buoyancy Hydrostatic skeleton

The position of the point of equilibrium of an object depends on A B C D

its shape its weight its volume the force of gravity

Unit Kurikulum Jabatan Pelajaran Perak

9

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An object with a low centre of gravity will A B C D

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be heavy be more stable have a large volume have a large surface area

A lever consists of the following parts Load I II Effort III Fulcrum A B C D

25

We should use a third class lever if we want to design a machine because A B C D

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I and II only. I and III only. II and III only. I, II and III.

We want to lift a heavy load with a small force. We want to save energy when working the machine. We want to lower the cost of constructing the machine. We want the movement of the load to be more than the movement of the effort.

The equation shows a process that take place in the blood capillaries.

Oxygen

+

haemoglobin

S

What is S? A B C D 27

oxygen dioxide oxyhaemoglobin oxygenated blood deoxygenated blood

Which of the following statements about inhalation is true?

A B C D

the volume of the thoracic cavity decrease the rib cage moves downwards and inwards the diaphragm contracts and moves downwards the air pressure in the lungs is greater than the air pressure outside the body

Unit Kurikulum Jabatan Pelajaran Perak

10

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The figure shows a component in the human blood.

The function of the component is A B C D

29

The excretion of carbon dioxide helps to A B C D

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help the blood to clot transport oxygen to the cells of the body help the body fight off diseases and resist infection transport substances needed by cells and removes waste products from cells

maintain our blood pressure control our body temperature control the acidity of our body maintain our body salt content

The figure shows the structure of the kidney.

X

What is the function of X? A B C D

To collect urine To produce urea To filter waste products To channel urine to the outside of the body

Unit Kurikulum Jabatan Pelajaran Perak

11

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The figure shows part of the stages of the human development. Ovum

P

Q

R

Sperm Which of the following is represented by P,Q and R

A B C D 32

P Zygote Embryo Foetus Zygote

Q Embryo Foetus Zygote Foetus

R Foetus Zygote Embryo Embryo

The graph shows the human growth curve. Adulthood Height (cm)

Infancy

Old age Adolescence Childhood

Age (years) Birth

3

13

20

65

Based on the graph, what can be deduced ? Stage A B C D

Infancy Childhood Adolescence Adulthood

Unit Kurikulum Jabatan Pelajaran Perak

Rate of growth Slow Rapid Very rapid Negative growth

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The following substances can be absorbed by the developing foetus.   

Drugs Alcohol Chemicals in tobacco smoke

What is the effect of these substances to the foetus? A B C D 34

Promotes healthy brain development Increases the growth rate of the foetus Improves the rate of absorption of nutrients Causes birth defects such as mental retardation

The diagram shows the fractional distillation of petroleum.

X Kerosen W

V

What are the products of the petroleum distillation labeled V, W, and X? V

W

X

A

Fuel oil

Bitumen

Petrol

B

Lubricating oil

Diesel

Naphtha

C

Paraffin

Lubricating oil

Naphtha

D

Fuel oil

Diesel

Petrol

Unit Kurikulum Jabatan Pelajaran Perak

13

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35

The figure shows the effect of heat on substance P. Substance P

Heat

limewater

The gas produced turns lime water cloudy. What is substance P?

36

A

Copper oxide

B

Calcium silicate

C

Calcium sulphate

D

Calcium carbonate

The figure shows two position of soft iron in a wire coil.

Soft iron When the switch is on, both two pieces of soft iron A B C D

vibrate become hot repel each other are pushed out of the wire coil

Unit Kurikulum Jabatan Pelajaran Perak

14

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37

Five lamps with the label 40 W,240 V are used for 5 hours and a television with label 500 W,240 V is used for 8 hours in a day? The tariff rates for use of electrical. are given below For the first 100 units = 20 cent per unit For the next 100 units = 23 cent per unit For every additional unit = 26 cent per unit What is the total cost of using those appliances for 30 days? A B C D

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RM 25.98 RM 27.65 RM 28.05 RM 31.50

Based on the given information, which is the correct sequence of formation and death of a star? L M N P A B C D

39

40

New Star Nebula Black Hole Red Supergiant N,M,L,P P,M,L,N M,L,P,N L,M,N,P

The atmospheric layer of the Sun that is only visible during a full eclipse of the Sun is I II III

corona chromosphere photosphere

A B C D

I and II I and III II and III I , II and III

In Malaysia, remote sensing technology is used in agriculture to A B C D

monitor oil spills monitor landslides monitor soil condition prevent natural disasters END OF QUESTION PAPER

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