Pmr Percubaan 2009 Sarawak Science

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SULIT 1

2

2

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Which of the following is the best definition of science? Di antara yang berikut, yang manakah definisi sains yang terbaik? A

Science is the study of the objects in the universe Sains ialah kajian tentang objek di alam semesta

B

Science is the natural phenomena happening around us Sains ialah fenomena semulajadi yang berlaku di sekeliling kita

C

Science is the study of nature and its implications on us Sains ialah kajian tentang alam semulajadi dan implikasinya terhadap kita

D

Science is the knowledge obtained from the study of human Sains ialah pengetahuan yang diperoleh daripada kajian tentang manusia

Diagram 1 shows a chemical substance. Rajah 1 menunjukkan satu bahan kimia.

Diagram 1 Rajah 1 Why is the chemical substance dangerous? Mengapakah bahan kimia itu merbahaya?

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A

It is irritant Ia adalah bahan merangsang

B

It is explosive Ia boleh meletup

C

It is corrosive Ia boleh mengakis

D

It is poisonous Ia adalah bahan racun

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3

Diagram 2 shows a plant cell. Rajah 2 menunjukkan sel tumbuhan Q

P

S

R Diagram 2 Rajah 2

Which structure gives shape to the plant cell? Struktur yang mana memberi bentuk kepada sel tumbuhan?

4

A

P

C

R

B

Q

D

S

Diagram 3 shows a plasticine lump shaped into a model that floats. Rajah 3 menunjukkan satu ketul plastisin yang dibentuk menjadi satu model yang terapung. Plasticine model Model plastisin Plasticine lump Ketulan plastisin

Water Air Diagram 3 Rajah 3

The plasticine model floats because Model plastisin terapung kerana

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A

it is denser than water ia lebih tumpat daripada air

B

its volume has been increased isipadunya telah bertambah

C

its mass has been increased jisimnya telah bertambah.

D

its mass has been reduced jisimnya telah dikurangkan

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4

Diagram 4 shows the particles found in four different substances. Rajah 4 menunjukkan jirim yang terdapat dalam empat bahan yang berlainan.

J

L

K

M

Diagram 4 Rajah 4 Which substance is a compound? Bahan yang manakah sebatian?

6

A

J

B

K

C

L

D

M

Diagram 5 shows an experiment to determine the percentage of air used in the combustion of a candle. Rajah 5 menunjukkan satu eksperimen untuk menentukan peratusan udara yang digunakan di dalam pembakaran lilin.

Plasticine Plastisin

Gas jar stand Penyokong balang gas Diagram 5 Rajah 5

How many percent of air is used in the combustion of the candle? Berapakah peratus udara yang digunakan dalam pembakaran lilin?

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A

10%

B

20%

C

40%

D

50%

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5

Diagram 6 shows apparatus set-up to study living things during respiration. Rajah 6 menunjukkan susunan radas untuk mengkaji benda hidup semasa pernafasan.

Indicator P Penunjuk P

Live cockroach Lipas hidup

Cotton soaked in sodium hydroxide solution Kapas direndam di dalam larutan natrium hidroksida Indicator Q Penunjuk Q

Boiled seeds Biji benih yang dididih

Cotton soaked in sodium hydroxide solution Kapas direndam di dalam larutan natrium hidroksida Indicator R Penunjuk R

Dead cockroach Lipas mati

Cotton soaked in sodium hydroxide solution Kapas direndam di dalam larutan natrium hidroksida Diagram 6 Rajah 6

Which of the following pairs is correct? Yang manakah merupakan pasangan yang betul? Observation Pemerhatian

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Inference Inferens

A Indicator P moves towards the test tube. Penunjuk P bergerak ke arah tabung uji

Oxygen is used during respiration. Oksigen digunakan semasa pernafasan.

B Indicator P moves away from the test tube. Penunjuk P bergerak menjauhi tabung uji

Carbon dioxide is released during respiration. Karbon dioksida dibebaskan semasa pernafasan

C Indicator Q moves away from the test tube. Penunjuk Q bergerak menjauhi tabung uji.

Carbon dioxide is released during respiration. Karbon dioksida dibebaskan semasa pernafasan.

D Indicator R moves towards the test tube. Penunjuk R bergerak ke arah tabung uji

Oxygen is used during respiration. Oksigen digunakan semasa pernafasan.

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6

Which of the following conditions shows that an object has kinetic energy ? Di antara berikut, keadaan manakah yang menunjukkan bahawa sesuatu objek mempunyai tenaga kinetik?

8

A

A lighted bulb Mentol menyala

B

A compressed spring Spring yang dimampatkan

C

A fast moving car Kereta bergerak dengan laju

D

A person on top of the roof Seseorang yang berada di atas bumbung

9 Diagram 8 shows the sources of energy and their descriptions. Rajah 8 menunjukkan sumber tenaga dan penerangannya. Sources of energy Sumber tenaga

Description Keterangan Energy obtained from the decomposition of organic waste products or dead organism. Tenaga yang didapati daripada penguraian bahan buangan organik atau organisma yang mati.

P

Energy obtained from dead plants and animal deposited on the sea bed and compressed between rocks. Tenaga yang diperolehi daripada tumbuhan dan haiwan mati terenap di dasar laut dan dimampatkan di antara batuan

Q

Energy obtained from the core of the earth. Tenaga yang diperolehi daripada teras bumi

R

Which of the following are represented by P, Q and R? Antara berikut yang manakah diwakili oleh P, Q dan R? P

Q

R

A

Coal Arang batu

Natural gas Gas asli

Petroleum Petroleum

B

Coal Arang batu

Biomass Biojisim

Geothermal Geoterma

C

Biomass Biojisim

Petroleum Petroleum

Geothermal Geoterma

D

Biomass Biojisim

Natural gas Gas asli

Petroleum Petroleum

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7

10 Which of the following has black and dull surfaces? Di antara berikut, yang manakah mempunyai permukaan yang hitam dan pudar?

11

A

Air conditioner Alat Pendingin Hawa

B

Electric fans Kipas Elektrik

C

Electric iron Seterika Elektrik

D

Car radiators Radiator Kereta

Diagram 9 shows iron bobs of different mass put in boiling water. Rajah 9 menunjukkan ladung besi berlainan jisim diletakkan dalam air mendidih

Diagram 9 Rajah 9 Arrange the iron bobs in order starting with the least heat content. Susunkan ladung besi itu mengikut susunan bermula daripada kandungan haba yang terendah.

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A

L, K , J , M

B

M, J , K , L

C

J, K, L, M

D

K, M, L , J

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8

Diagram 10 shows the structure of the human ear. Rajah 10 menunjukkan struktur telinga manusia.

R

S

Q P Diagram 10 Rajah 10

Which of the labelled parts P, Q, R and S produces impulses to be sent to the brain? Yang manakah di antara bahagian yang berlabel P, Q, R dan S menghasilkan impuls untuk dihantar ke otak?

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A

P

B

Q

C

R

D

S

Grass in vegetable garden are weeded from time to time to reduce the problem of: Rumput di kebun sayur dicabut dari semasa ke semasa untuk mengurangkan masalah: A

Parasitism Parasitisme

B

Mutualism Mutualisme

C

Commensalism Komensalisme

D

Competition Persaingan

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9

Diagram 11 shows a chart of the human senses. Rajah 11 menunjukkan satu carta deria-deria manusia.

R

Sense of smell Deria bau

Sense of touch Deria sentuh

SENSES DERIA

S

Sense of taste Deria rasa

Diagram 11 Rajah 11

R and S are used in R dan S digunakan dalam

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A

Tasting the chicken curry Merasa kari ayam

B

Selecting a good durian Memilih durian yang baik

C

Watching a movie Menonton wayang

D

Mother hugging her baby Ibu memeluk bayi

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Diagram 12 shows two boys suffering from a disease due to lack of a certain nutrient. Rajah 12 menunjukkan dua orang kanak-kanak lelaki yang berpenyakit disebabkan oleh kekurangan zat makanan tertentu.

Diagram 12 Rajah 12 What is their diet lacking of? Apakah kekurangan zat dalam pemakanan mereka?

16

A

Fat Lemak

C

Iodine Iodin

B

Iron Zat besi

D

Protein Protein

The following information shows the characteristics of a plant. Maklumat berikut menunjukkan ciri-ciri suatu tumbuhan.



Soft stem. Batang lembut.



Fibrous root system. Sistem akar serabut.



Parallel veined leaves. Daun urat selari.

Which plants have these characteristics? Tumbuhan yang manakah mempunyai ciri-ciri ini ?

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A

Banana Pisang

C

Coconut Kelapa

B

Papaya Betik

D

Balsam Keembung

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Diagram 13 shows a food chain. Rajah 13 menunjukkan satu rantai makanan.

Grasshopper Belalang

Paddy plant Padi

Bird Burung

Z Diagram 13 Rajah 13

Which organism can represent Z? Organisma manakah boleh mewakili Z? I. Rat Tikus II. Eagle Helang III. Fungi Kulat IV. Bacteria Bakteria

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A

I and II I dan II

B

II and III II dan III

C

III and IV III dan IV

D

I and IV I dan IV

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What is the similarity between evaporation and boiling? Apakah persamaan antara penyejatan dan pendidihan? A

Both absorb heat Kedua-duanya menyerap haba

B

Both are slow processes Kedua-duanya merupakan proses yang lambat

C

Both occur at the surface of liquid Kedua-duanya berlaku di permukaan cecair

D

Both occur below boiling point Kedua-duanya berlaku di bawah takat didih

Which of the following enables glucose powder to dissolve in a saturated glucose solution ? Antara cara-cara yang berikut, yang manakah membolehkan serbuk glukosa larut dalam larutan tepu glukosa?

A

Stirring Mengacaukannya

B

Adding more water Tambah lebih banyak air

C

Using a bigger beaker Menggunakan bikar yang lebih besar

D

Adding alcohol Tambah alkohol

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Diagram 14 shows an empty soft drink carton. When a student sucks air out of it, the carton changes in shape as shown. Rajah 14 menunjukkan sekotak minuman ringan yang kosong. Apabila seseorang pelajar menyedut udara keluar, kotak tersebut telah berubah bentuk seperti yang ditunjukkan.

Soft drink carton Kotak minuman ringan Diagram 14 Rajah 14

This happens because when air is sucked out of the carton, Ini berlaku kerana apabila udara disedut keluar dari kotak,

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A

the air pressure outside the carton increases tekanan udara diluar kotak bertambah

B

the air pressure inside the carton decreases tekanan udara di dalam kotak berkurangan

C

the speed of the air particles outside the carton increases kelajuan pergerakan zarah-zarah udara di luar kotak bertambah

D

the speed of the particles of air inside the carton decreases kelajuan pergerakan zarah-zarah udara di luar kotak berkurangan

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Diagram 15 shows an activity to find the weight of water. Rajah 15 menunjukkan satu aktiviti untuk menentukan berat air. (a)

(b)

(c)

Diagram 15 Rajah 15

What is the weight of the water? Berapakah berat air?

55/1

A

9N

B

7N

C

5N

D

4N

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15

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Diagram 16 shows a wild orchid plant. Rajah 16 menunjukkan satu tumbuhan orkid liar.

Diagram 16 Rajah 16

What is the support system of the plant? Apakah sistem sokongan tumbuhan tersebut?

55/1

A

Tendrils Sulur paut

B

Prop roots Akar sokongan

C

Buttress roots Akar banir

D

Clasping roots Akar cengkam

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16

Diagram 17 shows a figure in three different postures. Rajah 17 menunjukkan tiga postur yang berlainan.

Diagram 17 Rajah 17 Which posture is the most and the least stable? Yang manakah postur yang paling stabil dan postur yang paling kurang stabil? Most stable Paling stabil

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Least stable Paling kurang stabil

A

P

R

B

R

Q

C

Q

R

D

R

P

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17

24 Diagram 18 shows a pair of scissors used to cut a piece of string. Rajah 18 menunjukkan sepasang gunting digunakan untuk memotong sehelai benang.

J

K

L

M Diagram 18 Rajah 18

J, K, L and M are four different positions of the string. Where should the string be placed in order to be cut with the least effort? J, K, L dan M merupakan empat kedudukan benang yang berlainan. Di kedudukan manakah benang itu harus diletak supaya daya yang kurang sekali digunakan?

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A

Position J Kedudukan J

B

Position K Kedudukan K

C

Position L Kedudukan L

D

Position M Kedudukan M

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Diagram 19 shows two boys, X and Y standing on a wooden plank which is in equilibrium. Rajah 19 menunjukkan dua orang budak lelaki, X dan Y berdiri di atas papan kayu yang berada dalam keadaan yang seimbang.

Diagram 19 Rajah 19 If Y moves a distance of 1.0 m nearer to the fulcrum, what distance and direction must X move to maintain equilibrium? Sekiranya Y bergerak pada jarak 1.0 m mendekati fulkrum, apakah jarak dan arah X bergerak untuk mengekalkan keseimbangan? Distance Jarak

Direction Arah

A

0.6 m

Towards the fulcrum. Mendekati fulkrum

B

0.6 m

Away from the fulcrum Menjauhi fulkrum

C

0.9 m

Towards the fulcrum Mendekati fulkrum

D

0.9 m

Away from the fulcrum Menjauhi fulcrum

26 Haemoglobin is found in Hemoglobin didapati dalam

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A

white blood cells sel darah putih

B

red blood cells sel darah merah

C

blood plasma plasma darah

D

platelets platelet SULIT

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27 Diagram 20 shows the cross-section of the stem of a plant. Rajah 20 menunjukkan keratan rentas batang sesuatu tumbuhan.

Diagram 20 Rajah 20 Structure Z transports Struktur Z mengangkut

28

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A

water air

B

oxygen oksigen

C

mineral salts garam mineral

D

manufactured food makanan yang telah diproses

Which of the following helps in the clotting of blood? Di antara berikut, yang manakah membantu dalam pembekuan darah? I

Calcium Kalsium

II

Iron Zat besi

III

Vitamin K Vitamin K

IV

Platelets Platelet

A

I, II and III I, II dan III

C

I, II and IV I, II dan IV

B

II, III and IV II, III dan IV

D

I, III and IV I, III dan IV SULIT

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29 Diagram 21 shows a longitudinal section of the kidney. Rajah 21 menunjukkan keratan memanjang ginjal. Blood Darah

Diagram 21 Rajah 21 The function of part R is to Fungsi bahagian R ialah untuk

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A

channel urine to the urinary bladder menyalur air kencing ke pundi kencing

B

transport blood out of the kidney mengangkut darah keluar dari ginjal

C

transport blood to the kidney mengangkut darah ke ginjal

D

control the amount of water and mineral salts in the body mengawal kandungan air dan garam mineral di dalam badan

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21

30 Diagram 22 shows the female reproductive system. Rajah 22 menunjukkan sistem pembiakan perempuan.

P

Diagram 22 Rajah 22 The processes that take place at P and Q are Proses-proses yang berlaku di P dan Q adalah

P

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Q

A

Fertilisation Persenyawaan

Ovulation Pengovulan

B

Ovulation Pengovulan

Implantation Penempelan

C

Fertilisation Persenyawaan

Implantation Penempelan

D

Implantation Penempelan

Fertilisation Persenyawaan

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The following information shows the development in a boy. Maklumat berikut menunjukkan perkembangan seorang budak lelaki. •

Deepening of the voice Suara yang garau



Growth of beard, armpit and pubic hair Pertumbuhan janggut, bulu ketiak dan bulu di bahagian sulit.

The above characteristics appear in a boy during a certain stage of growth. The stage of growth is ….. Ciri-ciri di atas wujud pada seorang budak lelaki pada suatu peringkat pertumbuhan. Peringkat pertumbuhan ini ialah….

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A

childhood kanak-kanak

B

adolescence remaja

C

adulthood dewasa

D

old age tua

Which of the following exists as a free element in the Earth Crust? Antara yang berikut, yang manakah wujud sebagai elemen bebas dalam kerak Bumi? A

Magnesium Magnesium

B

Potassium Kalium

C

Calcium Kalsium

D

Gold Emas

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23

Diagram 23 shows the effect of heat on zinc sulphide Rajah 23 menunjukkan kesan haba ke atas zink sulfida

Zinc Sulphide Zink sulfida Heat panaskan

Solution X Larutan X Diagram 23 Rajah 23 What is solution X which is used to test the gas released? Apakah larutan X yang digunakan untuk menguji gas yang dibebaskan?

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A

Acidic potassium manganate (VII) solution Larutan potassium manganat(VII) berasid

B

Hydrogen carbonate indicator Penunjuk bikarbonat

C

Litmus solution Larutan litmus

D

Lime water Air kapur

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24

Diagram 24 shows an experiment to investigate the property of a calcium compound. Rajah 24 menunjukkan satu eksperimen untuk menyiasat sifat sebatian kalsium.

Dilute hydrochloric acid Asid hidrokloric cair

Lime water Air kapur

Calcium compound Sebatian kalsium

Diagram 24 Rajah 24 The gas released turns limewater chalky. Which of the following equations represents the reaction in the test tube? Gas yang terbebas mengeruhkan air kapur. Yang manakah di antara persamaan-persamaan berikut mewakili tindak balas dalam tabung uji? A Calcium compound + Hydrochloric acid Sebatian kalsium Asid hidroklorik

Calcium oxide + Water + Carbon dioxide Kalsium oksida Air Karbon dioksida

B Calcium compound + Hydrochloric acid Sebatian kalsium Asid hidroklorik

Calcium chloride + Water + Carbon dioxide Kalsium klorida Air Karbon dioksida

C Calcium compound + Hydrochloric acid Sebatian kalsium Asid hidroklorik

Calcium chloride + Water + Calcium oxide Kalsium klorida Air kalsium klorida

D Calcium compound + Hydrochloric acid Asid hidroklorik . Sebatian kalsium

35

Calcium hydroxide + Carbon dioxide Kalsium hidroksida Karbon dioksida

Which of the symbol of electrical components is correct? Antara simbol komponen elektrik berikut, yang manakah betul?

Electric component Komponen elektrik A

B

C

D

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Symbol Simbol

Electric source Punca elektrik

G

Fixed resistor Perintang tetap

V

Ammeter Ammeter

A

Fuse Fius

Ω SULIT

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25

Diagram 25 shows a wire passing through the middle of a cardboard. Rajah 25 menunjukkan dawai melalui kadbod. Current + Arus

_ Diagram 25 Rajah 25 The current is passed through the wire. Iron filings are sprinkled on the card board around the wire and then the cardboard is gently tapped. What is the shape and direction of the magnetic field? Arus dilalu menerusi dawai itu. Serbuk besi ditaburkan ke atas kadbod yang mengelilingi dawai dan kadbod tersebut dijentik secara perlahan-lahan. Apakah bentuk dan arah medan magnet? Shape and direction of magnetic field Bentuk dan arah medan magnet

A

B

C

D

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26

Diagram 26 shows a 3-pin plug. Rajah 26 menunjukkan satu palam 3 pin. P

Q

R

Diagram 26 Rajah 26 What is the colour of wire R? Apakah warna pada dawai R?

38

A

Yellow with green stripes Kuning dengan jalur hijau

B

Brown Perang

C

White Putih

D

Blue Biru

An air conditioner marked 2000 W, 240 V is used for 30 minutes daily. The cost of one unit of electricity is RM 0.30. What is the cost of using the air conditioner for 3 weeks? Sebuah penghawa dingin bertanda 2000 W, 240V telah diguna selama 30 minit setiap hari. Kos bagi satu unit bekalan elektrik ialah RM 0.30. Apakah kos untuk penghawa dingin yang digunakan selama 3 minggu?

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A

RM 6.30

B

RM 54.00

C

RM 378.00

D

RM 756.00

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27

Which galaxy does the Solar System belong to? Dari galaksi manakah, sistem solar berada?

A

B

C

D

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Diagram 27 shows a space probe. Rajah 27 menunjukkan prob angkasa.

Diagram 27 Rajah 27

What is a space probe? Apakah prob angkasa? A

A space ship that carries astronauts Kapal angkasa yang membawa angkasawan

B

A space robot launched to other planets to get information Robot angkasa yang dilancarkan ke planet untuk mendapatkan maklumat

C

A space ship used to launch satellites Kapal angkasa yang digunakan untuk melancarkan satelit-satelit

D

A man-made object that orbits the Earth Object buatan manusia yang mengorbitkan Bumi

END OF QUESTION PAPER KERTAS SOALAN TAMAT

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29

INFORMATION FOR CANDIDATES MAKLUMAT UNTUK CALON

1.

This paper consists of 40 questions. Kertas soalan ini mengandungi 40 soalan.

2.

Answer all questions. Jawab semua soalan.

3.

Each question is followed by four alternative answers, A, B, C and D. For each question, choose one answer only. Blacken your answer on the objective answer sheet provided. Tiap-tiap soalan diikuti oleh empat pilihan jawapan, iaitu A, B, C dan D. Bagi setiap soalan, pilih satu jawapan sahaja. Hitamkan jawapan anda pada kertas jawapan objektif yang disediakan.

4.

If you wish to change your answer, erase the blackened mark that you have made. Then blacken the new answer. Jika anda hendak menukar jawapan, padamkan tanda yang telah dibuat. Kemudian hitamkan jawapan yang baru.

5.

The diagrams in the questions provided are not drawn to scale unless stated. Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.

6.

You may use a non-programmable scientific calculator. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogam.

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Section A Bahagian A [40 marks] [40 markah] Answer all questions. Jawab semua soalan. 1

Diagram 1 shows the structure of a human heart. Rajah 1 menunjukkan struktur jantung manusia.

Diagram 1 Rajah 1 (a)

On Diagram 1, label the parts P, Q and R using the following words. Pada Rajah 1, labelkan bahagian-bahagian P, Q dan R menggunakan perkataan berikut:

Tricuspid valve Injap trikuspid

Pulmonary vein Vena pulmonari

Left ventricle Ventrikel kiri (3 marks)

(b)

(c)

State the function of P. Nyatakan fungsi P. -------------------------------------------------------------------------------------------------[1 mark] Which one of the parts in Diagram 1 ensures blood flows in one direction only? Bahagian yang mana satukah dalam Rajah 1 memastikan darah mengalir dalam satu arah sahaja? -------------------------------------------------------------------------------------------------[1 mark]

55/2 @ 2009 Hak Cipta Jabatan Pelajaran Sarawak

1

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Diagrams 2.1 and 2.2 below show the results of tests done on gas X. Gas X is tested with a lighted splinter and limewater. The results of the tests are shown below. Rajah 2.1 dan 2.2 di bawah menunjukkan keputusan ujian ke atas gas X. Gas X diuji dengan kayu uji bernyala dan air kapur. Keputusan ujian adalah ditunjukkan di bawah.

Lighted splinter extinguished Kayu uji menyala padam

gas X Lime water turns cloudy Air kapur menjadi keruh

gas X

Diagram 2.1 Rajah 2.1 (a)

Diagram 2.2 Rajah 2.2

(i) From the results of the above tests, identify gas X. Daripada keputusan-keputusan ujian di atas, kenalpasti gas X. ------------------------------------------------------------------------------------------[1 mark] (ii) State whether gas X is acidic, alkaline or neutral. Nyatakan sama ada gas X berasid, beralkali atau neutral. ------------------------------------------------------------------------------------------[1 mark] (iii) Name one solution which absorbs gas X readily. Namakan satu larutan yang boleh menyerap gas X. ------------------------------------------------------------------------------------------[1 mark]

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Diagram 2.3 shows the sources of air pollutants. Rajah 2.3 menunjukkan punca-punca pencemaran udara.

Burning of rubbish Pembakaran sampah

Construction activities Aktiviti pembinaan Sources of air pollutants Punca-punca pencemaran udara

Industrial activities Aktiviti perindustrian

Motor vehicles Kenderaan bermotor

Smoking Merokok

Diagram 2.3 Rajah 2.3 (i)

Name any two of these air pollutants. Namakan dua daripada bahan-bahan pencemar udara ini.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------[2 marks] (ii)

State one way you can reduce air pollution. Nyatakan satu cara anda boleh mengurangkan pencemaran udara.

--------------------------------------------------------------------------------------------[1 mark]

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Diagram 3.1 shows a few organisms interacted with each other in a maize field. Ralah 3.1 menunjukkan beberapa organisma berinteraksi antara satu sama lain dalam ladang jagung.

Diagram 3.1 Rajah 3.1 (a) Based on Diagram 3.1: Berdasarkan Rajah 3.1 (i)

Name the producer Namakan pengeluar -----------------------------------------------------------------------------------------[1 mark]

{ii) Name the tertiary consumer Namakan pengguna tertier ----------------------------------------------------------------------------------------[1 mark] (iii) Construct a food chain Binakan satu rantai makanan ----------------------------------------------------------------------------------------[1 mark] (iv) What will happen to the ecosystem if all the snakes are killed? Apakah akan terjadi kepada ekosistem itu jika semua ular mati? --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------[1 mark] 55/2 @ 2009 Hak Cipta Jabatan Pelajaran Sarawak

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(b) Diagram 3.2 shows a food web. Rajah 3.2 menunjukkan satu siratan makanan. Snakes Ular

Rats Tikus

Oil palm tree Kelapa sawit

Beetles Kumbang

Owls Burung

Hawks Helang

Birds Burung

Caterpillars Ulat

Diagram 3.2 Rajah 3.2 (i)

How many food chains are there in this food web? Berapakah rantai makanan yang terdapat dalam siratan makanan ini ? -----------------------------------------------------------------------------------------[1 mark]

(ii) What is the main source of energy in this food web? Apakah sumber tenaga utama dalam siratan makanan ini? -----------------------------------------------------------------------------------------[1 mark]

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Diagram 4 shows an apparatus to study the composition of the water through electrolysis. Rajah 4 menunjukkan radas untuk mengkaji komposisi air melalui elektrolisis. Carbon electrode Elektrod karbon Distilled water Air suling + Dilute sulphuric acid Asid sulfurik cair

Diagram 4 Rajah 4 (a)

When the switch is on, bubbles appear at the electrodes. Apabila suiz dihidupkan, gelembung-gelembung udara kelihatan pada elektrod. (i) Name the gas collected in test tube P. Namakan gas yang dikumpul dalam tabung uji P. ----------------------------------------------------------------------------------------[1 mark] (ii) Suggest a test for the gas collected in test tube Q. Cadangkan satu ujian untuk gas dalam tabung uji Q. -----------------------------------------------------------------------------------------[1 mark]

(b)

Give one use of the gas collected in test tube P. Berikan satu kegunaan gas yang terkumpul dalam tabung uji P.

----------------------------------------------------------------------------------------[1 mark]

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Why is dilute sulphuric acid added to the distilled water? Mengapakah asid sulfurik cair ditambah ke dalam air suling ?

-----------------------------------------------------------------------------------------[1 mark] (i) State whether distilled water is a compound, an element or a mixture? Nyatakan sama ada air suling adalah sebatian, unsur atau campuran ?

-----------------------------------------------------------------------------------------[1 mark] (ii) Explain your answer. Terangkan jawapan anda. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------[1 mark]

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Diagram 5.1 shows an experiment to study the transfer of heat in water. Rajah 5.1 menunjukkan eksperimen untuk mengkaji pemindahan haba di dalam air.

Potassium permanganate crystal Hablur kalium permanganat

Diagram 5.1 Rajah 5.1 (a)

(i) Draw arrows on Diagram 5.1 to show the direction of the heat flow in the beaker. Lukiskan beberapa anak panah pada Rajah 5.1 untuk menunjukkan arah pengaliran haba di dalam bikar. [1 mark] (ii) Name the method of heat transfer in the beaker. Namakan cara pemindahan haba dalam bikar itu.

-----------------------------------------------------------------------------------------[1 mark] (iii) Explain how heat transfer occurs in water? Terangkan bagaimana pemindahan haba berlaku di dalam air? --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------[2 marks] (iv) Give one application of heat transfer similar to the process shown in diagram 5.1. Berikan satu aplikasi pemindahan haba seperti proses yang berlaku dalam Rajah 5.1. ------------------------------------------------------------------------------------------[1 mark] 55/2 @ 2009 Hak Cipta Jabatan Pelajaran Sarawak

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Diagram 5.2 shows a cooking utensil. Rajah 5.2 menunjukkan suatu perkakas memasak.

Diagram 5.2 Rajah 5.2 (i) Name the method of heat transfer when this utensil is heated? Nama kaedah pemindahan haba apabila perkakas ini dipanaskan?

-----------------------------------------------------------------------------------------[1 mark] (ii) What is a suitable material for making the cooking utensil? Apakah bahan yang sesuai untuk membuat perkakas memasak itu?

-----------------------------------------------------------------------------------------[1 mark] (iii) Explain your answer in (b)(ii) Terangkan jawapan anda (b)(ii) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------[1 mark]

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Diagram 6.1 and 6.2 shows two power stations. Rajah 6.1 dan 6.2 menunjukkan dua stesen janakuasa.

Diagram 6.1 Rajah 6.1 High pressure steam Stim tekanan tinggi

Water from sea Air dari laut

Dynamo Dinamo

Turbine Turbin Water Air

Condenser Kondenser

Burning of fossil fuel Pembakaran bahan api fosil Water Air

Diagram 6.2 Rajah 6.2 (a)

(i)

What are the sources of energy used for generating electricity in Diagram 6.1 and Diagram 6.2? Apakah sumber tenaga yang digunakan untuk menjana elektrik dalam Rajah 6.1 dan Rajah 6.2 ? Diagram 6.1 Rajah 6.1 ----------------------------------------------------------------------------

Diagram 6.2 Rajah 6.2 ---------------------------------------------------------------------------[2 marks] (ii) What is the use of the turbine in Diagram 6.1 and 6.2? Apakah kegunaan turbin dalam Rajah 6.1 dan 6.2? -----------------------------------------------------------------------------------------[1 mark] SULIT 55/2 @ 2009 Hak Cipta Jabatan Pelajaran Sarawak 10

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Diagram 6.3 shows the electrical power transmission and distribution system. Rajah 6.3 menunjukkan sistem penghantaran dan pengagihan kuasa elektrik .

Q 33kV

Diagram 6.3 Rajah 6.3 (i)

What is the type of transformer X? Apakah jenis transformer X? -----------------------------------------------------------------------------------------[1 mark]

(ii)

Why is the electrical power transmitted through Q at high voltage? Mengapakah kuasa elektrik dihantar melalui Q pada voltan yang tinggi? -----------------------------------------------------------------------------------------[1 mark]

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Diagram 6.4 shows a transformer. Rajah 6.4 menunjukkan sebuah transformer.

Diagram 6.4 Rajah 6.4 (i) Name the type of transformer. Namakan jenis transformer.

------------------------------------------------------------------------------------------[1 mark] (ii) Compare the brightness of bulb M1 and M2. Which bulb is brighter? Bandingkan kecerahan mentol M1 dan M2. Mentol manakah yang paling cerah? ------------------------------------------------------------------------------------------[1 mark]

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The data below shows the information about a transformer. Data di bawah menunjukkan maklumat tentang sebuah transformer.

50 turns lilitan

Primary coil Gegelung primer

200 turns lilitan

Secondary coil Gegelung sekunder

10 volts volt

input voltage Voltan input

By using the given formula, calculate the output voltage. Dengan menggunakan rumus yang diberi, kirakan voltan output.

[2 marks]

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Section B Bahagian B [20 marks] [20 markah] Answer all questions Jawab semua soalan 7

Diagram 7 shows flowers P, Q, R and S with their filaments, anthers, stigmas, styles and petals. Rajah 7 menunjukkan bunga-bunga P, Q, R dan S dengan filamen, anter, stigma, stil dan ranggi. P

Q

R

S

Diagram 7 Rajah 7 (a)

Based on your observations, state one characteristic of each flower P, Q, R and S. Berdasarkan permerhatian anda, nyatakan satu ciri bagi tiap-tiap bunga P, Q, R dan S P: ------------------------------------------------------------------------------------------Q: ------------------------------------------------------------------------------------------R: ------------------------------------------------------------------------------------------S: ------------------------------------------------------------------------------------------[4 marks]

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Classify flowers P, Q, R and S into two groups based on their common characteristics. Kelaskan bunga -bunga P, Q, R dan S dalam kepada dua kumpulan berkaitan dengan ciri sepunya.

P, Q, R, S

Common characteristics Ciri sepunya

Letters of the flowers Huruf-huruf bunga

[4 marks]

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A pupil carried out an experiment to determine the time taken for ten complete swings of a pendulum of various lengths as shown in Diagram 8.1 below. Seorang pelajar menjalankan ekperimen untuk menentukan masa yang diambil untuk melengkapkan sepuluh ayunan lengkap bagi satu bandul yang berlainan panjang seperti yang ditunjukkan dalam Rajah 8.1 di bawah.

String Benang

Length of pendulum Panjang bandul

Retort stand Kaki retort

X

Y Y

X

Pendulum bob Ladung bandul

Wooden block Blok kayu

Diagram 8.1 Rajah 8.1 (a)

State the variables involved in this experiment. Nyatakan pembolehubah yang terlibat dalam eksperimen ini. (i)

Manipulated variable Pembolehubah yang dimanipulasikan

(ii)

Responding variable Pembolehubah yang bergerakbalas Constant variable Pembolehubah yang dimalarkan

The mass of the pendulum bob Jisim bagi ladung bandul

[2 marks]

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Diagram 8.2 shows the readings on the stop watch for the pendulum of different lengths to make ten complete swings. The first two reading have been given. Rajah 8.2 menujukkan bacaan jam randik untuk bandul yang berlainan panjang membuat sepuluh ayunan lengkap. Dua bacaan pertama telah diberi. Record the time taken for the next four readings of the stop watch. Catatkan bacaan masa yang diambil bagi empat lagi jam randik seterusnya.

The length of pendulum = 15 cm Panjang bandul

The length of pendulum = 30 cm Panjang bandul

Time taken = 9 seconds Masa yang diambil

Time taken = 18 seconds Masa yang diambil

The length of pendulum = 45 cm Panjang bandul

The length of pendulum = 60 cm Panjang bandul

Time taken = _______ seconds Masa yang diambil

Time taken = ________ seconds Masa yang diambil

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The length of pendulum = 75 cm Panjang bandul

The length of pendulum = 90 cm Panjang bandul

Time taken = ________ seconds Masa yang diambil

Time taken = ________ seconds Masa yang diambil [2 marks] Diagram 8.2 Rajah 8.2

(c)

Based on Diagram 8.2, record the readings of the stop watch in Table 8.1. Berdasarkan Rajah 8.2, rekodkan bacaan jam randik di dalam Jadual 8.1

Length of pendulum (cm) Panjang bandul (cm) Time taken for ten complete swings (s) Masa diambil untuk sepuluh ayunan lengkap (s)

0

0

15

9

30

45

60

75

90

18

Table 8.1 Jadual 8.1 [1 mark]

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Draw a graph to show the time taken for ten complete swings against the length of the pendulum. Lukiskan graf untuk menunjukkan masa yang diambil untuk sepuluh ayunan lengkap melawan dengan panjang bandul.

Time taken for ten complete swings (s) Masa diambil untuk sepuluh ayunan lengkap (s)

(d)

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Length of pendulum (cm) Panjang bandul (cm) [3 marks] (e)

State the relationship between the time taken for ten complete swings and the length of the pendulum. Nyatakan hubungan antara masa yang diambil untuk sepuluh ayunan lengkap dan panjang bandul. --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------[1 mark]

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What is your inference about the results of this experiment? Apakah inferens anda tentang keputusan eksperimen ini?

----------------------------------------------------------------------------------------------[1 mark] (g)

Predict the time taken for ten complete swings if the length of the pendulum is 50 cm. Ramalkan masa yang diambil untuk sepuluh ayunan lengkap untuk bandul yang panjangnya 50 cm. ----------------------------------------------------------------------------------------------[1 mark]

(h)

Based on Diagram 8.1, define operationally “time taken for ten complete swings.” Berdasarkan Rajah 8.1, definisikan secara operasi “masa yang diambil untuk sepuluh ayunan lengkap.” ----------------------------------------------------------------------------------------------[1 mark] END OF QUESTION PAPER KERTAS SOALAN TAMAT

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Answers for Paper 1 (Peperiksaan Percubaan Science PMR 2009) 1

B

11

A

21

D

31

B

2

B

12

D

22

D

32

D

3

A

13

D

23

B

33

A

4

B

14

D

24

D

34

B

5

C

15

D

25

A

35

C

6

B

16

A

26

B

36

A

7

A

17

C

27

D

37

B

8

C

18

A

28

D

38

A

9

C

19

B

29

A

39

C

10

D

20

B

30

B

40

B

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PERCUBAAN PMR 2009 MARKING SCHEME SUBJECT CODE SUBJECT PAPER

QUESTION SOALAN

1

(a)

(b)

(c)

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ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU

MARK MARKAH

Students should be able to label the parts of the heart in Diagram 1 correctly; P : Pulmonary vein Vena Pulmonari Q : Tricuspid valve Injap tricuspid R : Left ventricle Ventrikel kiri Students should be able to state the function of part P. P carries oxygenated bloods from the lungs to the left atrium // carries blood from the lung to the heart. P membawa darah beroksigen dari paru-paru ke atrium kiri // Membawa darah beroksigen dari paru-paru ke jantung

1 1

1

Students should be able to state the parts that ensures blood flows in one

direction only.

1

Q / tricuspid valve / bicuspid valve / semilunar valve Inja Q/ injap tricuspid / injap bicuspid / injap semilunar Total

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ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU

MARK MARKAH

(a)

A student should be able to answer correctly;

(i) (ii) (iii)

Carbon dioxide / karbon dioksida Acidic / berasid Sodium hydroxide solution / larutan natrium hidroksida

(b)

A student should be able to state

(i)

Carbon dioxide // dust // sulphur dioxide //lead particles // carbon monoxide // nitrogen dioxide // smoke soot // haze //oxides of nitrogen// CFC // nicotine tar // tobacco tar // chemicals such as pesticides and DDT Karbon dioksida // debu // sulfur dioksida // zarah-zarah plumbum // karbon monoksida // nitrogen dioksida // jelaga asap // jerebu // nitrogen oksida // CFC // tar nikotin // tar tembakau // bahan kimia seperti racun perosak dan DDT

(ii)

1 1 1

Ban open burning / Melarang pembakaran terbuka Recycle / Kitar semula Avoid using CFC based products / Mengelakkan penggunaan bahanbahan berasas CFC Use unleaded petrol / Guna petrol tanpa plumbum Car pool / Berkongsi kereta Walk or cycle / Berjalan atau mengayuh basikal Replant trees / Menanam semula pokok Use less electricity / Guna kurang tenaga electrik TOTAL

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ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU

MARK MARKAH

(a)

Students will be able to name the producer and tertiary consumer, construct food chain and explain what happen to the ecosystem if all snakes died.

(i)

Producer: Maize Pengeluar : Jagung

(ii)

Tertiary consumer : Eagle Pengguna tertiary : Helang

(iii)

Maize Jagung

(iv)

There are many answers Terdapat beberapa jawapan

(b)

A student should be able to answer correctly;

(i)

4

1

(ii)

The Sun Matahari

1

1

1

1 Rat Tikus

Snake Ular

Eagle Helang 1

TOTAL

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QUESTION SOALAN

4

(a)(i)

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ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU

MARK MARKAH

A student should be able to name the gas in test tube P; Oxygen / oksigen

(a)(ii)

(b)

1

A student should be able to suggest a test to determine the gas collected in test tube Q . A ‘pop’ sound is heard when a lighted wooden splinter is inserted into the test tube. Bunyi ‘pop’ kedengaran apabila kayu uji menyala dimasukkan ke dalam tabung uji. A student should be able to give one use of the gas accumulated in test tube Q;

1

Fuel for rocket // Used in weather balloons Bahan api untuk roket // Digunakan dalam belon cuaca (c)

A student should be able to give one reason of adding the dilute sulphuric acid to the distilled water; 1

To increase the conductivity of electricity in distilled water. Menambahkan pengaliran electrik dalam air suling.

(d)

A student should be able to state the answers correctly ;

(i)

A compound Sebatian

(ii)

Because a molecule of water is made up of 1 atom of oxygen and 2 atoms of hydrogen // Because a molecule of water is made up of two types of atoms which are chemically combined. Kerana satu molekul air terdiri daripada 1 atom oksigen dan dua atom hydrogen // Kerana satu molekul air terdiri daripada dua atom yang digabungkan secara kimia.

1

TOTAL

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QUESTION SOALAN

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(a)

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ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU A student should be able to draw arrows, correctly;

MARK MARKAH

(i)

1

(ii)

A student should be able to state correctly;

(iv)

Convection / perolakan Hot water rises when heated, cool water sink to the bottom // when water is heated it expands and becomes less dense. The hot water moves upwards. Cold and denser water moves downwards to take its place. Air panas naik ke atas apabila dipanaskan, air sejuk tenggelam ke bawah // Apabila air dipanaskan, ia mengembang dan menjadi kurang tumpat// Air panas bergerak ke atas // Air sejuk dan lebih tumpat bergerak ke bawah untuk mengambil alih tempatnya . A student should be able to answer correctly;

(b)

Ventilation of building / car radiator / air conditioner / refrigerator / electric kettle Pengudaraan dalam bangunan / radiator kereta / penghawa dingin / cerek elektrik A student should be able to state correctly;

(iii)

(i)

Conduction of heat Pengaliran haba / Konduktor haba

(ii)

Material : metals(name of other metals) / nama logam

1

2

1

1

2

(iii)

Reason: Metals are good conductor of heat / Logam adalah pengalir/konduktor haba yang baik TOTAL

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QUESTION ANSWER IN ENGLISH VERSION / SOALAN JAWAPAN DALAM VERSI BAHASA MELAYU (a) A student should be able to state the source of energy used for 6 generating electrical energy; (i)

(ii)

MARK MARKAH

Diagram 6.1 - Used water / Guna air Diagram 6.2 - Used fossil fuel/ Guna bahan api fossil

2

To turn the dynamo / generator // To rotate the dynamo to produce electricity Memutarkan dynamo / janakuasa // memutarkan dynamo untuk menghasilkan elektrik.

1

(b)

A student should be able to state the type of transformer and give reason;

(i)

A step-up transformer Transformer injak naik

1

To reduce the amount of heat lost // To reduce the lost of electrical energy. Untuk mengurangkan kehilangan haba // Untuk mengurangkan kehilangan tenaga elektrik

1

(ii)

(c)

A student should be able to answer as following;

(i)

Step-up transformer Transformer injak naik

1

(ii)

M2

1

(iii)

40 volts Input voltage Output voltage

= Primary coil Secondary Coil

[must show working – 1 mark] [Answer correct with unit – 1 mark]

2 TOTAL

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QUESTION SOALAN 7

(a )

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ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU A student should be able to state one characteristic of each flower P, Q, R and S, based on observation : P: small petal/stigma and anther hang outside the flower / long filament/ big anther / featherly stigma Q: Big petal / Stigma and anther are inside the flower / short filament, small anther. R: Big petal / Stigma and anther are inside the flower / short filament, small anther. S: small petal/stigma and anther hang outside the flower / long filament/ big anther / featherly stigma

7

(b)

MARK MARKAH 1 for every characteris tic ( max. 4 )

4

A student should be able to classify P, Q, R, and S into two groups, based on common characteristics P, Q, R, S

Common characteristic Ciri sepunya

Letters of the flowers Huruf-huruf bunga

1. 2. 3. 4. 5.

Long filament Big anther Small petals Featherly stigma Stigma & anther are hung outside the flower

1. 2. 3. 4. 5

Short filament Small anther Big petals Non-featherly stigma Stigma & anther are hung inside the flower

2

2 P, S

Q, R

TOTAL

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QUESTION SOALAN 7

(a )

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ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU Pelajar sepatutnya boleh menyatakan satu ciri bagi setiap bunga P, Q, R and S, berdasarkan kepada pemerhatian: P: ranggi kecil/stigma dan anter bergantung di luar bunga / filament panjang/ big anter / stigma berbulu Q: ranggi besar / Stigma dan anter are inside the berada dalam bunga / filament pendek/ anter kecil. R: ranggi besar / Stigma dan anter are inside the berada dalam bunga / filament pendek/ anter kecil. S: ranggi kecil/stigma dan anter bergantung di luar bunga / filament panjang/ big anter / stigma berbulu

7

(b)

MARK MARKAH 1 for every characteris tic ( max. 4 )

4

Pelajar sepatutnya boleh mengelaskan P, Q, R, and S into two groupskepada dua kumpulan,berdasarkan kepada ciri sepunya. P, Q, R, S

Ciri sepunya

1. 2. 3. 4. 5.

Filamen panjang Anter besar Ranggi kecil Stigma berbulu Stigma & anter Tergantung di luar bunga

5. 6. 7. 8.

6

Filamen pendek Anter kecil Ranggi besar Stigma tidak berbulu Stigma & anter Tergantung di dalam bunga

Huruf-huruf bunga

2

2 P, S

Q, R

TOTAL

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QUESTION SOALAN

8

55/2

ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU

MARK MARKAH

(a)

A student should be able to state the following variables;

(i)

Manipulated variable: Length of pendulum / string Pemboleh ubah yang dimanipulasikan: Panjang bandul / benang

1

(ii)

Responding variable: Time taken for ten complete swings Pembolehubah variable: Masa diambil untuk 10 ayunan lengkap

1

(b)

55 / 2

(i)

27 seconds

(ii)

36 seconds

(iii)

45 seconds

(iv)

54 seconds

(c)

A student should be able to record the readings of the stop watch in Table 8.1; Length of pendulum(cm) 0 15 30 45 60 75 90 Panjang bandul (cm) Time taken for ten complete swings(s) 0 9 18 27 36 45 54 Masa diambil untuk sepuluh ayunan lengkap(s)

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QUESTION SOALAN

ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU

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MARK MARKAH

(d)

Plot the graph – 1 mark 2 marks (All points correct - 2 marks) IF only (3 points correct 1 mark)

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3

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11

SULIT

ANSWER IN ENGLISH VERSION / JAWAPAN DALAM VERSI BAHASA MELAYU

QUESTION SOALAN

8

55/2

MARK MARKAH

(e) A student should be able to state the relationship between the time taken for ten complete swings with its length; As the length of pendulum increases, the time taken for ten complete swings increases // The longer the pendulum, the longer the time taken for ten complete swings // the shorter the length of pendulum, the shorter the time taken for ten complete swings. Apabila panjang bandul bertambah, masa diambil untuk 10 ayunan lengkap juga bertambah // Semakin panjang bandul, semakin lama masa diambil untuk 10 ayunan lengkap // Semakin pendek bandul, semakin pendek masa diambil untuk 10 ayunan.

(f)

A student should be able to give inference about the result of the experiment;

1

1

The time taken for ten complete swing is affected by the length of the pendulum // The time taken for ten complete swings depends on the length of pendulum// The length of pendulum influences the time taken for ten complete swings Masa yang diambil untuk 10 ayunan lengkap dipengaruhi oleh panjang bandul // Masa yang diambil untuk 10 ayunan lengkap bergantung kepada panjang bandul // Panjang bandul memepnegaruhi masa yang diambil untuk 10 ayunan lengkap. (g)

A student should be able to predict the time taken for ten complete swings, if the length of the pendulum is 50 cm;

1

30s (h)

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Students should be able to define operationally, “time taken for ten complete swing.”

Students must write the answer beginning with “the operational definition for time taken is the reading of the stop watch .”

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Calon mesti menulis jawapan bermula dengan “definasi secara operasi bagi masa yang diambil adalah bacaan jam randik untuk sepuluh ayunan.” TOTAL

12

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SULIT

55 / 2

12

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