Pmr Trial 2009 Sce Q&a (sbp)

papercollection

1

BAHAGIAN PENGURUSAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER KEMENTERIAN PELAJARAN MALAYSIA

PEPERIKSAAN PERCUBAAN PMR 2009

55/1

SCIENCE Kertas 1 Ogos 1 jam

Satu jam

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU 1. Kertas soalan ini adalah dalam Bahasa Inggeris . 2. Calon dikehendaki membaca maklumat di halaman belakang kertas soalan ini.

Kertas soalan ini mengandungi 20 halaman bercetak

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

2 1.

Diagram 1 shows a hazard symbol.

Diagram 1 Which of the following substances is labelled with the symbol? A B C D

2.

Ethanol Mercury Ammonium solution Concentrated sulphuric acid

Diagram 2 shows the sequence of cell organisation in humans.

Diagram 2 Which pair of organ X and system Y is matched correctly?

A B C D

Organ X Eye Lung Liver Kidney

System Y Nervous Respiratory Skeletal Digestive

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

3 3.

Diagram 3 shows the comparisons of mass among solid P, Q and R of the same volume.

Diagram 3 Which of the following shows the arrangement of the densities of solids in increasing order? A B C D

4.

P, Q, R P, R, Q Q, P, R Q, R, P

Diagram 4 shows the particles of material M and material N.

M

N Diagram 4

Which of the following material is true about material M and material N?

A B C D

M Orange juice Gold Carbon dioxide Orange Juice

N Gold Sea water Sea water Carbon dioxide

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

4

5.

Diagram 5 shows a pie chart that represents the composition of air in the atmosphere.

Diagram 5 Which of the following is true about gas X? A B C D

6.

Slightly soluble in water Turns lime water cloudy Soluble in alkaline pyrogallol solution Support combustion but does not burn

The information below shows the characteristics of energy.

-

Can be radiated

-

Can travel through a metal

-

Can travel through a vacuum

Which form of energy has the characteristics shown above? A B C D

Sound energy Heat energy Light energy Chemical energy

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

5 7.

Diagram 6 shows a bimetallic strip being heated.

Diagram 6 Why would the bimetallic strip bend when it is heated? A B C D

8.

Metal Y is hotter than metal X Metal X expands more than metal Y The size of atoms increases more in metal X than that of metal Y The kinetic energy of the atoms in metal Y increases more than that of metal X

Diagram 7 shows two mirrors J and K which are placed parallel to each other.

Which is the value of the angle g? A 25° B 35° C 55° D 65°

Diagram 7

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

6 9.

Table 1 shows the X and Y solutions that are required for the food tests. Food Milk Corn powder

Food Test X Y Table 1

Which of the following are most probably X and Y?

A B C D

10.

X Iodine solution Ethanol and water Millon’s reagent Benedict’s solution

Y Benedict’s solution Millon’s reagent Iodine solution Millon’s reagent

Diagram 8 shows the classification of plants.

Diagram 8 Which of the following is true about P, Q, R and S?

A B C D

P

Q

R

S

Flowering plant

Non-flowering plant

Mango tree

Fungus

Non –flowering plant

Flowering plant

Dicotyledonous

Fungus

Flowering plant

Non-flowering plant

Paddy plant

Mushroom

Non-flowering plant

Flowering plant

Monocotyledonous plant

Mushroom

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

7 11.

Diagram 9 shows a pyramid of numbers.

Diagram 9 As the level goes higher in a pyramid of numbers,… A B C D

12.

more energy is lost in each level the size of the organisms in each level decreases the number of organisms in each level increases the mass of the organisms in each level decreases

Diagram 10 shows two pieces of wet filter paper that are hung under the sun.

string

wet filter paper Diagram 10 It is observed that P dries first. This is probably because A B C D

air circulation at P is faster P receives more heat than Q the exposed surface area for P is larger the air around Q is more humid than P

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

8 13.

Diagram 11 shows an insecticide sprayer.

Diagram 11 Which part of the insecticide sprayer has the lowest air pressure when the piston is pushed? A B C D

14.

P Q R S

Diagram 12 shows a wooden block being pulled on the surface of a table.

Diagram 12 Based on the diagram, which of the arrows labeled P,Q,R and S represent the direction in which a frictional force is exerted? A B

15.

P Q

C D

R S

Which of the following groups of organisms has the same method of support? A B C D

Camel, elephant, crab Water lily, lotus, duckweed Prawn, cockroach, caterpillar Bougainvillea plant, pea plant, maize plant

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

9 16.

Diagram 13 shows four wooden tables.

Diagram 13 Based on the picture above, arrange the tables in descending order of stability. A B C D

17.

M, K, L, J M, L, K, J J, K, L, M J, L, K, M

Diagram 14 shows two types of levers.

Diagram 14 Which of the following tools represent X and Y ?

A B C D

X A fishing rod A broom Scissors A claw hammer

Y A nutcracker A paper cutter A wheelbarrow A fishing rod

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

10 18.

What property of alveoli enables oxygen to diffuse through the walls of alveoli easily? A B C D

19.

Which of the following is true about the aorta? A B C D

20.

The alveoli have small surface areas and thin walls The alveoli are made up of a network of blood capillaries The alveoli consist of many living cells which are involved in the diffusion process The alveoli are surrounded by a network of capillaries which possess very thin walls

It is the smallest artery in the human body It has a large lumen with thin muscular walls It has many valves that allow blood to flow in one direction. It carries oxygenated blood from the heart to all parts of the body

Diagram 15 shows a cross section of a stem.

Diagram 15 Which of the following is true about tissue M and N.

A B C D

Tissue M Transport water Transport food Soft living tissue Does not provide support for plants

Tissue N Transport food Transport water Long hollow tissue Provides support for plants

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

11 21.

The graph below shows the growth curve of a human. Which stage represents a form three student?

22.

Pollination is the ….. A B C D

23.

Mother's breast milk is ideal for a baby because it ….. A B C D

24.

germination of pollen grains and ovule. fusion of male and female gamete in the ovary. transfer of pollen grains from the anther to the stigma. transfer of pollen grains from the stigma to the anther.

is rich in fibre. supplies oxygen to the baby. contains a high amount of iron. contains the most nutrients needed by a baby.

A low protein diet slows down children’s body growth because protein is needed for ….. A B C D

preventing anaemia building strong teeth building strong bones building new body tissues

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

12 25.

In which of the following parts do plants store their waste products ? I. Leaf II. Stem III. Fruit A B C D

26.

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

Diagram 16 below, shows one of the excretory organs in humans.

Diagram 16 What are the excretory products from the organ shown above? A B C D

Water only Water and carbon dioxide Water, mineral salts and urea Water, mineral salts, glucose and urea

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

13 27.

Diagram 17 shows the apparatus set-up to investigate the reaction between magnesium and oxygen.

Diagram 17 Why is the magnesium powder being heated first? A B C D

28.

To melt it To turn it into gas To make it react with the potassium manganate (VII) To make it hot enough and ready to react with oxygen

Diagram 18 shows three types of vehicles that run on fuels extracted from petroleum.

P

Q

R

Diagram18 Which of the following states correctly the fuels used by P, Q and R respectively?

A B C D

P Diesel Diesel Petrol Petrol

Q Kerosene Petrol Kerosene Diesel

R Petrol Kerosene Diesel Kerosene

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

14 29.

Diagram 19 shows a complete electrical circuit.

Diagram19 Both A1 and A2 show readings of 2A. What is the resistance of Y in ohms? A B C D

30.

1 2 3 4

Diagram 20 shows a positively-charged electroscope.

Diagram 20 A polythene rod which has been rubbed with a piece of woollen cloth is brought close to the metal cap of the electroscope.

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

15 Which of the following shows the most likely final position of the gold leaf? A

B

C

D

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

16

31.

Diagram 21 shows a cable that transmits electrical power from the power station to the consumer.

11 kV

P

Power station

132 kV

Q

33 kV

R

T

415 V

S

Light industry

240 V Residential

11 kV Heavy industry Diagram 21 The position of the step-down transformer is at A B C D

32.

P only. Q, R and S only. Q, R, S and T only. P, Q, R, S and T.

Diagram 22 shows an electrical appliance with its power and voltage ratings.

Diagram 22 Which of the following fuses is the most suitable to be used for the appliance? A

3A

B

C

D

5A 10 A 13 A

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

17 33.

Diagram 23 shows the internal structure of a 3-pin plug and the wires connected to it.

Diagram 23 What are the colours of the wires W, X and Y according to the International Colour Code for Wires used in this country?

A B C D

W Brown Blue Brown Red

X Black Green with yellow stripes Blue Brown

Y Green Brown Yellow with green stripes Blue

34.

Which of the following units is used to measure heat? A Joule (J) B Kelvin (K) C Fahrenheit (F) D Degree celsius (°C)

35.

Diagram 24 shows a beaker filled with water and pieces of paper. When the water is heated, the pieces of paper will move in the direction as shown in Diagram 24.

Water Pieces of paper Bunsen burner

Diagram 24 Which of the following appliances use this principle? A B C D

Icebox Refrigerator Thermos flask Washing machine

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

18

36.

The pie chart in Diagram 25 below shows the constituents of the different classes of food in food sample X.

Water Fat

Protein

Diagram 25 Which of the following statements is true? A Food X is rice B Food X is essential for growing toddlers C Food X shows a positive result when tested with Benedict solution D Food X provides more energy than the energy provided by carbohydrates.

37.

Which of the following is a permanent contraceptive method? A Ligation B Spermicides C In Vitro Fertilization (IVF) D Intrauterine contraceptive device (IUCD)

38.

Diagram 26 shows a ginger that reproduce by their vegetative part.

Diagram 26 Which of the plants below reproduce same way as the plant in Diagram 26 ? A B C D

Potato Carrot Sweet potato Bryophyllum

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

19 39.

Which of the following statements is true about prominences? A B C D

40.

They emit gamma rays They last for a few years They occur in the inner layer of the sun They throw out matter from the Sun into space

In 1996, Malaysia launched a satellite called MEASAT as shown in Diagram 27.

Diagram 27 What is the satellite used for? A B C D

To explore planets To obtain data on the universe To carry out experiments in space To help in broadcasting and communication services.

END OF QUESTION PAPER

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

20

INFORMATION FOR CANDIDATES

1. This question paper consists of 40 questions. 2. Answer all questions. 3. Each question is followed by four alternative answers, A, B, C or D. For each question, choose one answer only. Blacken your answer on the objective answer sheet provided.

4. If you wish to change your answer, erase the blackened mark that you have made. Then blacken the new answer.

5. The diagrams in the questions provided are not drawn to scale unless stated. 6. You may use a non-programmable scientific calculator.

55/1 © 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

SULIT NAMA PELAJAR

TINGKATAN

BAHAGIAN PENGURUSAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER KEMENTERIAN PELAJARAN MALAYSIA

PEPERIKSAAN PERCUBAAN PMR 2009 TINGKATAN 3

55/2

SCIENCE Kertas 2 Ogos 1 ½ jam

Satu jam tiga puluh minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU Untuk Kegunaan Pemeriksa

1. Tulis nama penuh dan tingkatan anda pada ruangan yang disediakan.

2. Kertas soalan ini adalah dalam Bahasa Inggeris.

Kod Pemeriksa: Bahagian

Soalan 1

3. Calon dikehendaki membaca maklumat di halaman belakang kertas soalan ini.

A

B

Markah Markah Penuh Diperoleh 6

2

6

3

6

4

6

5

8

6

8

7

10

8

10

JUMLAH

60

Kertas soalan ini mengandungi 19 halaman bercetak 55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT

papercollection

55/2

2 Section A [40 marks] Answer all questions.

1

Diagram 1 shows three instruments, J, K and L which are commonly used in the laboratory.

J:

K:

L: Diagram 1

(a)

(i)

On Diagram 1, label the apparatus, J, K and L using the following words: Measuring cylinder

Evaporating dish

Filter funnel [ 3 marks ]

(ii) Based on your answer in (a) (i), which of the instruments is used to measure the volume of a liquid? ............................................................................................................................. [1 mark] (b)

Draw lines to match the instruments with their respective functions. Instrumets

Function •

To support apparatus during heating

•

To measure temperature

•

To conduct the excess heat away

•

To measure time [2 marks]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT 2

papercollection

55/2

3

Diagram 2.1 shows the classification of nutritious food in a Food Pyramid.

X

Diagram 2.1 (a) State the importance of using a food pyramid. ........................................................................................................................................ [1 mark] (b) (i)

What is the function of food class X? .............................................................................................................................. [1 mark]

(ii) What happens if an individual lacks class food X in his daily diet? .............................................................................................................................. [1 mark] (c)

Diagram 2.2 shows a person suffering from a kind of disease.

Diagram 2.2 Which class of food will cause the disease in Diagram 2.2 if taken excessively in our daily diet? ..................................................................................................................................... [1 mark]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT

papercollection

55/2

4

(d) (i)

A student was given few food samples by his teacher. How can he test the presence of carbohydrates in the food sample? ........................................................................................................................... [1 mark]

(ii)

State the end product of digestion of carbohydrates in the small intestine? ........................................................................................................................... [1 mark]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT 3

papercollection

55/2

5

Diagram 3.1 shows a food chain in the oil palm estate.

Oil palm tree

Mouse

Owl

Diagram 3.1 (a) (i)

What is the main energy source for this food chain? ............................................................................................................................. [1 mark]

(ii)

Write down the energy changes when the oil palm leaf absorbs sunlight during photosynthesis. ............................................................................................................................ [1 mark]

(b) (i)

Owls are used to control the mouse population in the oil palm estate. State the method used. ............................................................................................................................ [1 mark]

(ii)

State one advantage of the method you mentioned in (b)(i). ............................................................................................................................ [1 mark]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT

6

papercollection

55/2

(d) Diagram 3.2 shows a pyramid of numbers.

Diagram 3.2 Complete the pyramid of numbers to represent the food chain in Diagram 3.1. [1 mark] (e)

If all owls migrate to another place, state another organism that can be introduced to control the mouse population in this oil palm estate. ..................................................................................................................................... [1 mark]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT 4

papercollection

55/2

7

Diagram 4 shows an appliance that uses the principle of air pressure.

Diagram 4 (a) (i)

Name the apparatus in Diagram 4. ........................................................................................................................... [1 mark]

(ii)

State the use of the apparatus. ........................................................................................................................... ........................................................................................................................... [1 mark]

(b) On Diagram 4, mark the symbols:

HP

for high pressure

LP

for low pressure [2 marks]

(c)

Can the apparatus function properly if the rubber tube is not filled with water? Explain. ……………………………………………………………………………………..... ………………………………………………………………………………………. [2 marks]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT 5

8

papercollection

55/2

Diagram 5.1 shows an experiment conducted on a balsam plant.

Diagram 5.1 (a)

(i)

What happens if a fresh balsam plant is left in beaker R for two hours? ............................................................................................................................... [1 mark]

(ii)

Predict what will happen to the balsam plant if water is poured into beaker R? ............................................................................................................................... [1 mark]

(iii)

What can you infer from your observation in (a) (ii) above? ............................................................................................................................... [1 mark]

(iv)

State the support system in a balsam plant? ............................................................................................................................... [1 mark]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT (b)

papercollection

55/2

9 (i)

Diagram 5.2 shows the same aquatic plant in two different situations.

Situation A

Situation B Diagram 5.2

State your observation in situation A and situation B ? ............................................................................................................................... [1 mark] (ii)

What is the inference for your observation in (b)(i) above? ............................................................................................................................... [1 mark]

(iii)

What makes the aquatic plant in situation B stand upright? ............................................................................................................................... [1 mark]

(c)

What is the function of the support system in both plants in this experiment? .......................................................................................................................................... [1 mark]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT 6

papercollection

55/2

10

Diagram 6 shows the set-up apparatus to determine the action of heat on plumbum sulphide.

Diagram 6 (a) (i)

Describe the colour change of the acidified potassium manganate (VII) solution. ........................................................................................................................... [1 mark]

(ii)

Name the solution that can be used to substitute the acidified potassium manganate (VII) solution. ......................................................................................................................... [1 mark]

(iii)

Name the white residue produced after plumbum sulphide is heated. ........................................................................................................................... [1 mark ]

(b) State the two elements found in plumbum sulphide. (i) ........................................................................................................ (ii) ......................................................................................................... [2 marks]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT (c)

papercollection

55/2

11 Write the word equation for the reaction of heat on plumbum sulphide. heat + Oxygen

+

[2 marks] (d) Give one example of a chemical compound that can replace plumbum sulphide in this experiment. ..................................................................................................................................... [1 mark]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT

papercollection

55/2

12

Section B [20 marks] Answer all questions. 7

(a)

Diagram 7.1 shows four organisms, P, Q, R and S that reproduce in different ways.

P

Q

S

R Diagram 7.1

State one characteristic that can be observed from any three organisms by referring to their way of reproduction. Organisms

Way of Reproduction

.........................................................................................

.........................................................................................

......................................................................................... [3 marks]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT (b)

13

papercollection

55/2

Classify the organisms, P, Q, R and S into groups based on their common characteristics.

P, Q, R and S

Common characteristics

Name of organisms

[4 marks]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT (c)

papercollection

55/2

14 Diagram 7.2 shows three conditions, J, K and L, for germination of seeds.

J

K

L

Diagram 7.2 Based on Diagram 7.2: (i) State one inference about the condition required for germination of seeds. ……………………………………………………………………………… ……………………………………………………………………………… [1 mark] (ii)

Predict which condition is the most suitable for the seeds to germinate. ……………………………………………………………………………… [1 mark]

(iii)

State the relationship between the presence of water and air with the germination of seeds. ……………………………………………………………………………… ……………………………………………………………………………… [1 mark]

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT 8 .

(a)

papercollection

55/2

15 Diagram 8.1 shows two circuits P and Q that have different numbers of bulbs.

P

Q Diagram 8.1

The brightness of bulbs in two circuits is observed. State one inference about the brightness of the bulbs. ……………………………………………………………………………………... [1 mark] (b)

Diagram 8.2 shows an electrical circuit set up to study the relationship between the length of nichrome wire and current flow. Dry cells Bulb Ammeter Crocodile clip Metre ruler Nichrome wire

Diagram 8.2 The steps of the experiment are as follows: 1. The crocodile clip is touched on the nichrome wire at the length of 10 cm. 2. The ammeter reading is recorded. 3. Step 1 and step 2 are repeated by increasing the length of nicrome wire at 20 cm, 30 cm and 40 cm respectively. The results are shown in Table 8.3. Length of nichrome wire (cm)

Ammeter reading (A)

10

0.85

20

0.80

30

0.75

40 Table 8.3

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT

papercollection

55/2

16

Diagram 8.4 shows the ammeter reading when the length of nichrome wire is 40 cm.

Diagram 8.4 Based on Table 8.3 and Diagram 8.4:

55/2

(i)

Record the ammeter reading for 40 cm length of wire used in Table 8.3. [1 mark]

(ii)

Use the graph paper provided on page 17 to answer this part of the question. Based on the readings in Table 8.3, plot a graph to show the relatioship between the length of nichrome wire against current flow. [2 marks]

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT

papercollection

55/2

17 Graph for Question 8(b)(ii)

0.8

Current (A)

0.6

0.4

0.2

10

20

30

40

50

Length of nichrome wire (cm)

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT (iii)

papercollection

55/2

18

Based on the graph drawn in 8(b)(ii), state the relationship between the length of nichrome wire and current. .................................................................................................................................... .................................................................................................................................... [1 mark]

(iv)

State the manipulated variable involved in this experiment. .................................................................................................................................... [1 mark]

(v)

Predict the ammeter reading if 50 cm nichrome wire is used in the circuit. .................................................................................................................................... [1 mark]

(vi)

Define operationally “the current”. ………………………………………………………………………………..…..… [1 mark]

(vii)

In the box provided draw a circuit diagram to show a parallel circuit by using the symbols for the following components.

[2 marks] END OF QUESTION PAPER 55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

SULIT

papercollection

55/2

19

INFORMATION FOR CANDIDATES

1. This question paper consist of two sections: Section A and Section B. 2. Answer all questions in both sections. 3. Write your answers in the spaces provided in the question paper. 4. Show your working, it may help you to get marks. 5. If you wish to change your answer, neatly cross out the answer that you have done. Then write down the new answer. 6. The diagrams in the questions provided are not drawn to scale unless stated. 7. Marks allocated for each question or sub-part of a question are shown in brackets. 8. The time suggested to complete Section A is 60 minutes and Section B is 30 minutes. 9. You may use a non-programmable scientific calculator. 10. Hand in this question paper to the invigilator at the end of the examination.

55/2

© 2009 Hak Cipta Bahagian Pengurusan Sekolah Berasrama Penuh dan Sekolah Kluster

[Lihat sebelah SULIT

papercollection

BAHAGIAN PENGURUSAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER KEMENTERIAN PELAJARAN MALAYSIA

PEPERIKSAAN PERCUBAAN PMR 2009

SKEMA PEMARKAHAN

SAINS

(KERTAS 1 & KERTAS 2) 55/1 & 55/2

papercollection

SCIENCE PMR (SBP) PERCUBAAN PENILAIAN MENENGAH RENDAH 2009

SKEMA JAWAPAN KERTAS 1 BIL

KONSTRUK

ARAS

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

PSNR010103 PSNR010201 PSNR010201 KSNR010501 KSNR010401 PSNR010102 KSNR010401 KSNR010201 KSNR010401 PSNR010202 PSNR010202 KSNR010201 PSNR010301 PSNR010301 PSNR010203 PSNR010201 KSNR010101 KSNR010401 PSNR010102 KSNR010501 KSNR010201 PSNR010101 PSNR010102 PSNR010102 KSNR010501 KSNR010501 KSNR010401 KSNR010501 KSNR020101 KSNR020101 KSNR010401 KSNR020101 PSNR010102 PSNR010102 KSNR010101 KSNR010201 PSNR010102 KSNR010101 PSNR010102 PSNR010101

R S R T S S S T S S S S R R R S T S S S S R R R S S S S T S S T R R T T R S R R

JAWAPAN A B D C B B B C C A A C B C B D D D D A C C D D D C D D C B C B C A B B A A D D

STIMULUS DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM TABLE DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM

DIAGRAM GRAPH

DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM DIAGRAM

papercollection

SKEMA JAWAPAN KERTAS 2 QUESTIONS 1

(a)

(i)

(ii)

RUBRIC

MARKS

J : Filter funnel K: Measuring cylinder L : Evaporating dish * Spelling must be correct

1 1 1

Measuring cylinder / K

1

(b)

•

To support apparatus during heating

•

To measure temperature

•

To conduct the excess heat away

•

To measure time

(a) (b)

(i)

(ii) (c) (d)

(i)

(ii)

2

1

6

Help people to plan a (healthy) balance diet

1

- (Needed) for growth // - Repair body tissues // -(Required) for the formation of enzymes/ hormones/ antibodies/ haemoglobin Any suitable answer

1

Kwashiorkor * Spelling must be correct

1

Fat // Carbohydrate

1

- Drop iodine solution on the food sample, it will turn to blue black/ dark blue// - Turns iodine solution to blue black/ dark blue

1

Glucose

1

(a)

(b)

1 2

6

(i)

Sunlight

1

(ii)

Light energy changes to chemicals energy / light energy chemical energy

1

(i)

Biological control

1

(ii)

- Does not pollute air (environment) // - Does not kill other organisms except pests // - Cheap / affordable

1

*Accept any suitable answer

1

2

TOTAL 3

1

1

TOTAL 2

3

1 1 1

1

papercollection

(c)

(i)

1 Owl Mouse

1

Oil palm tree

(ii)

Snakes / Cats *Accept any suitable answer.

1 TOTAL

4

1 6

(a)

Siphon

1

1

(b)

To transfer water (liquid) from a high level to a lower level

1

1

(c)

2

2

(d)

No. - The air pressure in the rubber tube will prevent the water from flowing // - The air pressure in the rubber tube is the same as the atmospheric pressure

1 1 2

TOTAL 5

(a)

(i)

It will wilt / droop / unable to remain firm / unable to stay upright

1

(ii)

It will be firm and remain/ stay upright / look fresh/ not droop

1

(iii)

-

1

3

-

(b)

6

Balsam plant needs water to stand upright // Turgidity of the balsam plant depends on the presence of water The balsam plant can stay upright because there is support by turgidity of water

(iv)

The turgidity of cells / cell turgidity

1

1

(i)

In situation A aquatic plant cannot stand upright on its own whereas in situation B the aquatic plant stand upright

1

3

(ii)

-

1

Aquatic plant needs water in order to stand upright The aquatic plant can stand upright because there is support from water (buoyancy)

papercollection

(iii) (c)

Buoyant force of water / buoyancy of water

1

To support its/ the plants body weight

1 TOTAL

6

(a)

(b)

Purple to/  colourless/ The purple colour of acidified potassium manganate (VII) solution is bleached

1

(ii)

Acidified potassium dichromate (VI) solution

1

(iii)

Plumbum oxide

1

(i) (ii)

Plumbum Sulphur

1 1 heat

Plumbum sulphide + Oxygen

(d)

8

(i)

(c)

3

(a)

2

2 Plumbum oxide + sulphur dioxide

2

All 3 answers are correct – 2 marks Any 2 answers are correct – 1 mark

Zinc sulphide (Blende) // Magnesium sulphide // Iron Sulphide (Pyrite) // Copper sulphide (Chalcocite) *Accept any suitable answer.

1 1

TOTAL 7

1

Organism Amoeba Frog Housefly Starfish

Way of Reproduction Asexual (reproduction) // Binary fission Sexual (reproduction) Sexual (reproduction) Asexual (reproduction) // Regeneration

*Accept any 3 correct answers

8 1 1 1 1

3

papercollection

(b) P, Q, R and S

Sexual reproduction / Reproduce sexually //

Asexual reproduction/ Not reproduce Common characteristics sexually/ Reproduce asexually //

Reproduce by binary fission //

Not reproduce by binary fission //

Reproduce by regeneration

Not reproduce by regeneration

Frog, Housefly/ fly //

Amoeba, Starfish//

Amoeba //

Name of organisms

Starfish

4

Frog, Housefly/ fly, Starfish // Frog, Housefly/ fly, Amoeba

*Accept any suitable answer

(c)

(i)

Germination of seeds depends on the presence of water and air/ oxygen

1

(ii)

J / Test tube with wet cotton wool

1

(iii)

The seed will germinate with the presence of water and air/ oxygen/ The seeds need water and air /oxygen to germinate

1

TOTAL 8

(a)

(b)

3

10

The brightness of the bulbs depends on the number of bulbs (arranged in the circuit) // Bulbs in circuit P are brighter because there are less number of bulbs (compare to circuit Q) // (vice versa) The more bulbs (arranged in the circuit), the less brighter the bulb (vice versa)

1

(i)

0.7 // 0.70

1

1

(ii)

Refer to the Appendix 1

2

2

1

papercollection

(iii)

The longer the length of nichrome wire, the lower the current // (vice versa)

1

1

(iv)

Length of nichrome wire

1

1

(v)

0.65A (unit is compulsory)

1

1

(vi)

Current is the reading of the ammeter / ammeter reading

1

1

1 1

2

(vii)

-

Correct symbols drawn – 1m Correct connection of circuit – 1m TOTAL

10

papercollection

APPENDIX for Question 8 (c)

X 0.8

X

X

X

Current (A)

0.6

0.4

0.2

10

20

30

Length of nichrome wire (cm) -

All four points are correctly transferred – 1m A straight smooth line joining all the points – 1m

END OF MARKING SCHEME

40

50