Sabah 2009 Spm Trial - G.science

Excel 2 SPM SCIENCE Kertas 1 Sept 2009 1 ¼ jam

JABATAN PELAJARAN NEGERI SABAH

SIJIL PELAJARAN MALAYSIA 2009 EXCEL 2

SAINS KERTAS 1 Satu jam lima belas minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

1. 2. 3. 4. 5. 6. 7.

Kertas soalan ini mengandungi 50 soalan. Jawab semua soalan. Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan. Hitamkan satu ruangan sahaja bagi setiap soalan. Sekiranya anda hendak menukarkan jawapan, padamkan tanda yang telah dibuat dan hitamkan jawapan yang baru. Rajah yang mengiringi soalan tidak dilukiskan mengikut skala kecuali dinyatakan. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.

________________________________________________________________________ Kertas soalan ini mengandungi 25 halaman bercetak.

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Diagram 1 shows the components of the human nervous system. Rajah 1 menunjukkan komponen dalam system saraf manusia.

Diagram 1 Rajah 1 What is X? Apakah X? A B C D

2.

Sensory nervous system Sistem saraf deria Spinal nervous system Sistem saraf tunjang Peripheral nervous system Sistem saraf periferi Receptors and effectors Reseptor dan efektor

Diagram 2 shows a neurone. Rajah 2 menunjukkan satu neuron.

Diagram 2 Rajah 2 What is X? Apakah X? A B C D

Axon Akson Dendron Dendron Dendrite Dendrit Cell body Badan sel

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Diagram 3 shows one of the receptor found in the human body. Rajah 3 menunjukkan satu daripada reseptor yang terdapat dalam badan manusia.

Diagram 3 Rajah 3 Which part of the body this receptor can be found? Di manakah reseptor ini boleh didapati dalam badan? A B C D

4.

The glucose content in a patient’s urine is more than the normal level. Which endocrine gland is not functioning well? Kandungan glukosa dalam air kencing seorang pesakit melebihi aras normal. Kelenjar endokrin yang manakah gagal berfungsi? A B C D

5.

Muscle Otot Skin Kulit Nose Hidung Eye Mata

Pituitary Pituitari Pancreas Pankreas Thyroid Tiroid Testis Testis

What is the process involved in the production of new cells for growth? Apakah proses yang terlibat dalam penghasilan sel-sel baru untuk pertumbuhan? A B C D

Mitosis Mitosis Meiosis Meiosis Mutation Mutasi Fertilisation Persenyawaan

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Which comparison of identical and non-identical twins is true? Manakah perbandingan yang betul bagi kembar seiras dan kembar tak seiras?

A B C D

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4

Identical twins Kembar seiras Involve two sperms and two ova Melibat dua sperma dan dua ovum Sharing the same placenta Berkongsi plasenta Same or different sex Jantina sama atau berbeza Different genetic traits Sifat genetik berbeza

Non-identical twins Kembar tak seiras Involve one sperm and one ovum Melibatkan satu sperma dan satu ovum Have their own placenta Mempunyai plasenta tersendiri Same sex Jantina sama Same genetic traits Sifat genetik sama

Diagram 4 shows graphs of variation among the students in a class. Rajah 4 menunjukkan graf variasi di kalangan pelajar di dalam satu kelas.

Diagram 4 Rajah 4 Which of the following is correct? Manakah antara berikut adalah benar?

A B C D

Shoulder width Lebar bahu Continuous variation Variasi selanjar Continuous variation Variasi selanjar Discontinuous variation Variasi tak selanjar Discontinuous variation Variasi tak selanjar

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Left-handed / Normal Kidal / Tangan kanan Discontinuous variation Variasi tak selanjar Continuous variation Variasi selanjar Continuous variation Variasi selanjar Discontinuous variation Variasi tak selanjar [Lihat sebelah SULIT

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Diagram 5 shows the inheritance of height in pea plants. Rajah 5 menunjukkan pewarisan sifat tinggi pada pokok kacang.

Diagram 5 Rajah 5 Which offspring has a correct pair of genes? Manakah anak yang mempunyai pasangan gen yang betul?

A B C D

9.

Offspring Anak P Q R S

Genotype Genotip Tt TT TT tt

Based on the Periodic Table, which element represents an inert gas? Berdasarkan Jadual Berkala, unsur yang manakah mewakili gas nadir?

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Diagram 6 shows the structure of an atom. Which of the following represents a neutron? Rajah 6 menunjukkan struktur atom. Manakah antara berikut mewakili neutron?

Diagram 6 Rajah 6

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Diagram 7 shows the arrangement of ions in an ionic compound. Rajah 7 menunjukkan susunan ion bagi sebatian ionik.

Diagram 7 Rajah 7 Which substance is represented by the particles shown in Diagram 7? Manakah bahan yang diwakili oleh partikel seperti Rajah 7? A B C D

Zinc Zink Mercury Merkuri Sulphur Sulfur Sodium chloride Natrium klorida

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Which of the following is an example of an endothermic reaction? Antara berikut yang manakah contoh tindakbalas endotermik? A B C D

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Haber process Proses Haber Acid reacts with alkali Asid bertindakbalas dengan alkali Ammonium salt dissolved in water Garam ammonium dilarutkan dalam air Sodium hydroxide crystals dissolved in water Hablur natrium hidroksida dilarutkan dalam air

Diagram 8 shows a simple voltaic cell. Rajah 8 menunjukkan sebuah sel ringkas.

Diagram 8 Rajah 8 Which sequence of energy conversion is correct? Manakah urutan perubahan tenaga yang betul? A B C D

Electrical energy  chemical energy  heat energy  light energy Tenaga elektrik  tenaga kimia  tenaga haba  tenaga cahaya Chemical energy  electrical energy  heat energy  light energy Tenaga kimia  tenaga elektrik  tenaga haba  tenaga cahaya Electrical energy  chemical energy  light energy  heat energy Tenaga elektrik  tenaga kimia  tenaga cahaya  tenaga haba Chemical energy  electrical energy  light energy  heat energy Tenaga kimia  tenaga elektrik  tenaga cahaya  tenaga haba

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Table 1 shows the observations of metals P, Q and R when heated. Jadual 1 menunjukkan pemerhatian ke atas logam P, Q dan R apabila dipanaskan. Metals Logam P Q R

Observation Pemerhatian Burns with bright white flame Terbakar dengan nyalaan putih yang terang A bright flame spreads slowly Nyalaan terang merebak perlahan A glow spreads slowly Berbara secara perlahan Table 1 Jadual 1

Which is the correct arrangement of the reactivity of metals P, Q and R in an increasing order? Manakah susunan yang betul tentang kereaktifan logam P, Q dan R secara menaik? A B C D

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

A student wants to get a pure liquid X from a mixture of liquids X and Y. Table 2 shows the boiling points of both liquids. Seorang pelajar ingin mendapatkan cecair tulen X daripada campuran cecair X dan Y. Jadual 2 menunjukkan takat didih bagi kedua-dua cecair. Liquid Cecair X Y

Boiling point ( o C ) Takat didih ( o C ) 78 100 Table 2 Jadual 2

Which is the most suitable method for separating the liquids? Manakah kaedah yang paling sesuai untuk memisahkan cecair-cecair tersebut? A Filtration Penurasan B Condensation Kondensasi C Distillation Penyulingan D Crystallisation Penghabluran

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Diagram 9 shows radioactive rays in electrical field. Rajah 9 menunjukkan sinaran radioaktif dalam medan elektrik.

Diagram 9 Rajah 9 Which is the alpha ray? Manakah merupakan sinaran alfa? A B C D

17.

P Q R P and R

Diagram 10 shows nuclear fission of uranium. Rajah 10 menunjukkan pembelahan nuclear bagi uranium.

Diagram 10 Rajah 10 What is particle P? Apakah zarah P? A B C D

Proton Proton Neutron Neutron Electron Elektron Atom Atom

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Diagram 11 shows two identical prisms placed in front of a white screen. Rajah 11 menunjukkan dua prisma yang serupa disusun di hadapan sebuah skrin putih.

Diagram 11 Rajah 11 What can be seen on the white screen? Apakah yang boleh dilihat di atas skrin putih? A B C D

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A spectrum with red colour on top. Spektrum dengan cahaya merah di atas. A spectrum with violet colour on top. Spektrum dengan cahaya ungu di atas. A patch of white light. Tompok cahaya putih. A patch of red light. Tompok cahaya merah.

Diagram 12 shows the structure of a camera. Rajah 12 menunjukkan struktur kamera.

Diagram 12 Rajah 12 Which part of the eyes has a similar function to the part of camera labelled X ? Bahagian manakah pada mata mempunyai fungsi yang sama seperti bahagian berlabel X? A B C D

Ciliary muscle Otot silia Pupil Anak mata Retina Retina Iris Iris

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Diagram 13 shows a candle O in front of a plane mirror. Which of the points A, B, C or D will the image be formed? Rajah 13 menunjukkan lilin O di hadapan sebuah cermin satah. Manakah antara kedudukan A, B, C atau D imej akan terbentuk?

Diagram 13 Rajah 13

21.

Diagram 14 shows the production of colours X, Y and Z from the addition of coloured lights. Rajah 14 menunjukkan hasil warna X, Y dan Z dari penambahan cahaya berwarna.

Diagram 14 Rajah 14 What colours are represented by X, Y and Z? Apakah warna yang diwakili oleh X, Y dan Z?

A B C D

X Cyan Sian Yellow Kuning Magenta Magenta Cyan Sian

Y Magenta Magenta Magenta Magenta Cyan Sian Yellow Kuning

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Z Yellow Kuning Cyan Sian Yellow Kuning Magenta Magenta [Lihat sebelah SULIT

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Diagram 15 shows the particles arrangement of steel. Rajah 15 menunjukkan susunan zarah bagi keluli.

Diagram 15 Rajah 15

What is the effect of the presence of foreign atoms in steel? Apakah kesan kehadiran atom asing di dalam keluli? A B C D

23.

To prevent the iron atoms from sliding Untuk menghalang atom-atom besi dari menggelongsor To increase the electrical conductivity of the iron Untuk meningkatkan kekonduksiaan elektrik bagi besi. To increase the empty spaces between the iron atoms Untuk meningkatkan ruang kosong antara atom-atom besi. To decrease the magnetic properties of the iron atoms Untuk mengurangkan sifat magnet bagi atom-atom besi.

The information below shows the industrial products made from substance P. Maklumat berikut menunjukkan hasil industri yang diperbuat daripada bahan P.   

Nitric acid Asid nitrik Cleaning agent Agen pencuci Explosives Bahan letupan

What is P? Apakah P? A B C D

Ethanol Etanol Ammonia Ammonia Sulphur Sulfur Sulphuric acid Asid sulfurik

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Diagram 16 shows a type of microorganism which grows on the surface of bread. What group of microorganism is this? Rajah 16 menunjukkan sejenis mikroorganisma yang tumbuh pada permukaan roti. Apakah kumpulan mikroorganisma ini?

Diagram 16 Rajah 16 A B C D

25.

Bacteria Bakteria. Virus. Virus Algae. Alga Fungi Kulat.

Diagram 17 shows an apparatus set-up to study the growth of microorganisms. Rajah 17 menunjukkan susunan radas untuk mengkaji pertumbuhan mikroorganisma.

Diagram 17 Rajah 17 Two Petri dishes are prepared as shown in Diagram 17. These Petri dishes are kept in a cupboard and under the sun respectively. What is the factor investigated in this experiment? Dua piring Petri disediakan seperti ditunjukkan dalam Rajah 17. Piring-piring Petri ini masing-masing diletakkan di dalam almari dan di bawah sinaran matahari. Apakah faktor yang dikaji dalam eksperimen ini? A B C D

Light Cahaya Humidity Kelembapan Temperature Suhu pH pH

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B C D

They are used for baking bread. Ia digunakan dalam pembuatan roti. They decompose waste materials. Ia menguraikan bahan buangan They are used in producing vaccines. Ia digunakan dalam penghasilan vaksin. They are used to make antiseptic. Ia digunakan dalam pembuatan antiseptik.

Which of these substances can treat diseases caused by bacteria? Manakah antara bahan berikut dapat merawat penyakit yang disebabkan oleh bakteria? A B C D

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Which of the following is not an importance of microorganisms to human? Manakah yang berikut bukan kepentingan mikroorganisma kepada manusia? A

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Antifungal Antikulat Antibiotic Antibiotik Antitoxin Antitoksin Antigen Antigen

Table 3 shows the types and quantities of food taken by Shafiq for his breakfast. Jadual 3 menunjukkan jenis dan kuantiti makanan yang diambil oleh Shafiq untuk sarapannya. Type of food Jenis makanan Bread Roti Milk Susu Eggs Telur Butter Mentega

Quantity / g Kuantiti / g

Energy / kJ per 100 g Tenaga / kJ setiap 100 g

100

1 060

150

270

50

660

30

3 120 Table 3 Jadual 3

Calculate the total energy taken by him that morning. Hitung jumlah tenaga yang diambil olehnya pada pagi itu. A B C D

1 820 kJ. 2 731 kJ. 2 750 kJ. 2 800 kJ.

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Diagram 18 shows an experiment to study the healthy growth of a maize plant. Rajah 18 menunjukkan suatu eksperimen untuk mengkaji pertumbuhan yang sihat bagi satu anak jagung.

Diagram 18 Rajah 18 Which of the following will spoil the growth of the maize plant? Manakah antara berikut yang boleh menjejaskan pertumbuhan anak jagung? A B C D

Wrap the boiling tube with black paper. Tabung didih dibalut dengan kertas hitam. Put the boiling tube in a closed cupboard. Tabung didih diletakkan di dalam almari tertutup. Replaces the Knop's solution every week. Menukar larutan Knop setiap minggu. Air the solution all the time. Pengudaraan larutan pada setiap masa.

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Diagram 19 shows the roots of a leguminous plant. Rajah 19 menunjukkan akar tumbuhan kekacang.

Diagram 19 Rajah 19 Which bacteria is found in Q? Apakah bakteria yang ditemui dalam Q? A B C D

31.

Nitrifying bacteria Bakteria penitritan Putrefying bacteria Bakteria pengurai Denitrifying bacteria Bakteria pendenitritan Nitrogen-fixing bacteria Bakteria pengikat nitrogen

Diagram 20 shows a pond community. Rajah 20 menunjukkan komuniti sebuah kolam.

Diagram 20 Rajah 20 Which of the following are producers in this community? Manakah antara berikut merupakan pengeluar dalam komuniti ini? A B C D

P and Q only P dan Q sahaja P and R only P dan R sahaja Q and R only Q dan R sahaja P, Q and R P, Q dan R

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B C D

Nitrogen dioxide Nitrogen dioksida Carbon monoxide Karbon monoksida Sulphur dioxide Sulfur dioksida Lead fumes Asap plumbum

The excessive use of pesticides is a threat to human health. Which is the most effective method to overcome this threat? Penggunaan racun makhluk perosak merupakan ancaman kepada kesihatan manusia. Manakah kaedah paling efektif untuk mengatasi masalah ancaman tersebut? A B C D

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The exhaust gases from motor vehicles contain several harmful gases. Which gas can cause death by depriving a person of oxygen? Gas ekzos daripada kenderaan bermotor mengandungi gas berbahaya. Manakah gas yang boleh menyebabkan kematian akibat kekurangan oksigen dalam badan seseorang? A

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Rear natural predators of the pests Memelihara pemangsa semulajadi kepada perosak Destroy pests using chemicals Memusnahkan perosak menggunakan bahan kimia Destroy the habitat of pests Memusnahkan habitat perosak Use organic fertilisers Menggunakan baja organik

Diagram 21 shows a human activity. Rajah 21 menunjukkan satu aktiviti manusia.

Diagram 21 Rajah 21

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What are the problems resulting from the activity shown in Diagram 21? Apakah masalah yang berpunca daripada aktiviti ditunjukkan dalam Rajah 21? I II III

A B C D

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I and II only I dan II sahaja I and III only I dan III sahaja II and III only II dan III sahaja I, II and III I, II dan III

Which of these substances is the source of hydrocarbon? Manakah antara bahan berikut merupakan sumber hidrokarbon? A B C D

36.

Soil erosion Hakisan tanah The greenhouse effect Kesan rumah hijau Flash flood Banjir kilat

Coal Arang batu Ethanol Etanol Gasohol Gasohol Thiokol Tiokol

Diagram 22 shows an experiment set up to produce ethanol from glucose solution and yeast. Rajah 22 menunjukkan satu eksperimen yang disediakan untuk menghasilkan etanol daripada larutan glukosa dan yis.

Diagram 22 Rajah 22

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What will happen to limewater after 30 minutes? Apakah yang berlaku kepada air kapur selepas 30 minit? A B C D

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Turn cloudy Berubah menjadi keruh Turn to yellow Berubah menjadi kuning Turn colourless Berubah menjadi tidak berwarna Form red precipitate Membentuk mendakan merah

Diagram 23 shows a soap molecule. Rajah 23 menunjukkan molekul sabun.

Diagram 23 Rajah 23 Which of the following describes J and K correctly? Manakah di antara berikut adalah benar tentang J dan K? J

A B C D

38.

Part Bahagian Ionic Ionik Hydrocarbon Hidrokarbon Hydrocarbon Hidrokarbon

Ionic Ionik

K Solubility in Larut di dalam Water Air Grease Gris Water Air Grease Gris

Part Bahagian Hydrocarbon Hidrokarbon

Ionic Ionik Hydrocarbon Hidrokarbon

Ionic Ionik

Solubility in Larut di dalam Grease Gris Water Air Water Air Grease Gris

Diagram 24 shows a polymer breaking down into monomers. Rajah 24 menunjukkan penguraian polimer kepada monomer.

Diagram 24 Rajah 24

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What is polymer X? Apakah polimer X? A B C D

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Starch Kanji Protein Protein Silk Sutera Wool Kapas

Diagram 25 shows a stage in a four stroke petrol engine. Rajah 25 menunjukkan satu peringkat di dalam enjin petrol empat lejang.

Diagram 25 Rajah 25 What is the stage shown in Diagram 25? Apakah peringkat yang ditunjukkan dalam Rajah 25? A B C D

Exhaust stroke Lejang ekzos Power stroke Lejang kuasa Intake stroke Lejang pengambilan Compression stroke Lejang mampatan

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The initial velocity of a car is 20 ms-1. It then accelerates to 10 ms-2 in 3 seconds. Calculate the final velocity of the car. [ Acceleration =

Final velocity – Initial velocity Time

]

Halaju sebuah kereta adalah 20 ms-1. Ia kemudiannya memecut sehingga 10 ms-2 dalam masa 3 saat. . Kira halaju akhir kereta tersebut. [ Pecutan = A B C D 41.

Halaju Akhir – Halaju Awal Masa

]

60 ms-1 50 ms-1 30 ms-1 0 ms-1

Diagram 26 shows the passengers being thrown forward when the bus suddenly stops. Rajah 26 menunjukkan penumpang terhumban ke hadapan apabila bas dihentikan secara tiba-tiba.

Diagram 26 Rajah 26 What causes the phenomenon in Diagram 26? Apakah yang menyebabkan fenomena di dalam Rajah 26 ? A B C D

Force Daya Inertia Inersia Pressure Tekanan Momentum Momentum

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42. Diagram 27 shows a hydraulic jack. Rajah 27 menunjukkkan satu jek hidraulik.

Diagram 27 Rajah 27 How much force must be applied on piston X so that piston Y can push up the load of 3000 N? Force [ Pressure = ] Surface Area Berapakah daya yang dikenakan ke atas omboh X supaya omboh Y dapat mengangkat beban seberat 3000 N? Daya [ Tekanan = ] Luas permukaan A B C D 43.

50 N 100 N 150 N 300 N

Which of these shapes is most suitable to make water vehicles? Manakah bentuk yang paling sesuai untuk membuat kenderaan air? A

B C

D

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B C D

Stabilizer Penstabil Preservative Pengawet Flavouring Perisa Antioxidant Pengantioksida

A farmer has a mango plant which produces big and sweet fruits. He intends to produce a large quantity of mango seedlings in a short period from the mango plant in his orchard. Which method should he use? Seorang petani mempunyai pokok mangga yang menghasilkan buah yang besar dan manis. Dia berhasrat untuk menghasilkan anak pokok mangga di dalam tempoh yang singkat daripada pokok mangga daripada kebunnya itu. Apakah kaedah yang patut digunakannya? A B C D

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Which of the following chemical substances is used in processed food to make the food tastier and delicious? Manakah di antara bahan kimia berikut digunakan di dalam pemprosesan makan untuk menjadikan makanan lebih sedap dan enak?

A

45.

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Cloning Pengklonan Bud grafting Cantuman tunas (tut) Stem cutting Keratan batang Germination of seeds Percambahan biji benih

Which of the following is a synthetic polymer? Manakah di antara berikut merupakan polimer sintetik? A B C D

Isoprene Isoprena Neoprene Neoprena Sucrose Sukrosa Cellulose Selulosa

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Diagram 28 shows the structure of a plastic Rajah 28 menunjukkan struktur suatu plastik.

. Diagram 28 Rajah 28 Which plastic has the above structure? Manakah plastik yang mempunyai struktur di atas? A. B C D

48.

Perspex Perspek Polystyrene Polistirena Bakelite Bakelit Polyvinyl chloride Polivinil klorida

Diagram 29 shows a wave form. Rajah 29 menunjukkan satu bentuk gelombang.

Diagram 29 Rajah 29 What is the velocity of the wave if its frequency is 10 Hz? [ Velocity = Frequency x Wavelength ] Apakah halaju gelombang tersebut jika frekuensinya adalah 10 Hz? [ Halaju = Frekuensi x Panjang Gelombang ] A B C D

1.0 ms-1 2.0 ms-1 3.0 ms-1 4.0 ms-1

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Diagram 30 shows a radio transmitter system. Rajah 30 menunjukkan satu sistem pemancar radio.

Diagram 30 Rajah 30 Which of the following is used for generating radio waves? Manakah antara berikut digunakan di dalam penjanaan gelombang radio? A B C D

50.

Aerial Arial Oscillator Pengayun Modulator Modulator Microphone Mikrofon

Why is a communication satellite geostationary? Mengapakah satelit komunikasi adalah geopegun? A B C D

It is attracted by the gravity of the Earth. Ia ditarik oleh graviti bumi. It is located above the equator of the Earth. Ia terletak di atas khatulistiwa bumi. It appears stationary when viewed from the Earth. Ia kelihatan pegun apabila dilihat dari bumi. It makes one complete orbit round the Earth every day. Ia membuat satu putaran lengkap mengelilingi bumi dalam satu hari.

END OF QUESTION PAPER KERTAS SOALAN TAMAT

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Excel 2 SPM SCIENCE Kertas 1 September 2009 ANSWER 1

C

11

D

21

A

31

B

41

B

2

C

12

C

22

A

32

B

42

B

3

A

13

D

23

B

33

A

43

C

4

B

14

B

24

D

34

D

44

C

5

A

15

C

25

A

35

A

45

A

6

B

16

A

26

D

36

A

46

B

7

A

17

B

27

B

37

A

47

C

8

D

18

C

28

B

38

B

48

B

9

D

19

D

29

B

39

B

49

B

10

C

20

B

30

D

40

B

50

C

Nama : …………………………………………..

Kelas : ……………….

JABATAN PELAJARAN SABAH Excel 2 SPM SCIENCE Kertas 2 Sept 2009 2½ jam

Dua jam tiga puluh minit

SAINS KERTAS 2

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU Kegunaan Pemeriksa Kod Pemeriksa : 1. Tulis nama, kelas, angka giliran, dan nombor kad pengenalan anda pada ruangan yang disediakan. 2. Kertas soalan ini adalah dalam dwibahasa. 3. Soalan dalam Bahasa Inggeris mendahului soalan yang sepadan dalam Bahasa Melayu. 4. Calon dibenarkan menjawab keseluruhan atau sebahagian soalan sama ada dalam Bahasa Inggeris atau Bahasa Melayu. 5. Calon dikehendaki membaca maklumat di halaman belakang kertas soalan ini.

Bahagian A

B

C

Soalan 1 2 3 4 5 6 7 8 9 10 11 12 Jumlah

Markah Penuh 5 5 5 5 6 6 6 6 6 10 10 10

Markah Diperoleh

Kertas soalan ini mengandungi 21 halaman bercetak.

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Section A Bahagian A [20 marks] [20 markah] Answer all the questions in this section. Jawab semua soalan dalam bahagian ini.

1.

Diagram 1 shows an experiment to study the resistance of iron nail and stainless steel nail (an alloy) to corrosion. Rajah 1 menunjukkan satu eksperimen untuk mengkaji rintangan paku besi dan paku keluli tahan karat (suatu aloi) ke atas kakisan.

Diagram 1 Rajah 1

Both test tubes with their contents are left for three days and the results of the experiment are as shown in Table 1. Kedua-dua tabung uji dan kandungannya dibiarkan selama tiga hari dan keputusan eksperimen ditunjukkan dalam Jadual 1.

Type of nail Jenis paku Iron nail Paku besi Stainless steel nail Paku keluli tahan karat

Observation Pemerhatian

Table 1 Jadual 1

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(a)

3

Complete Table 1 with the following information : Lengkapkan Jadual 1 dengan maklumat berikut : Rust Berkarat

No rust Tidak berkarat [1 mark] [1 markah]

(b)

State one inference to explain the observations made in Table 1. Nyatakan satu inferens untuk menjelaskan pemerhatian yang dibuat dalam Jadual1. ……………………………………………………………………………………………

(c)

…………………………………………………………………………………………… [1 mark] [1 markah] State the operational definition of an alloy. Nyatakan definisi secara operasi bagi aloi. …………………………………………………………………………………………… …………………………………………………………………………………………… [1 mark] [1 markah]

(d)

Tick ( √ ) the objects that rust in sodium chloride solution. Tandakan ( √ ) objek yang akan berkarat dalam larutan natrium klorida.

Iron scissors

Steel hammer

Steel lock

Iron key

[1 mark] [1 markah] (e)

What can be observed when the test tube containing iron nail is left for four weeks? Apakah yang akan diperhatikan apabila tabung uji yang mengandungi paku besi dibiarkan selama empat minggu ? …………………………………………………………………………………………… [1 mark] [1 markah]

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4

Diagram 2 shows an experiment to study the relationship between the object distance and the size of the image formed on the screen of a pin-hole camera. Rajah 2 menunjukkan satu eksperimen untuk mengkaji hubungan di antara jarak objek dan saiz imej yang terbentuk di atas skrin kamera lubang jarum.

Diagram 2 Rajah 2

Table 2 shows the results of the experiment. Jadual 2 menunjukkan keputusan eksperimen ini. Object distance (cm)

10

8

Size of the image (cm)

0.5

1.0

6

4

2

2.0

2.5

Table 2 Jadual 2 (a)

Complete Table 2 by measuring the size of the image formed in Diagram 2. Lengkapkan Jadual 2 dengan mengukur saiz imej yang terbentuk dalam Rajah 2. [1 mark] [1 markah]

(b)

State one characteristic of the image formed in Diagram 2. Nyatakan satu ciri imej yang terbentuk dalam Rajah 2. …………………………………………………………………………………………… [1 mark] [1 markah]

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(c)

Using the data in Table 2, draw a graph of the size of the image against the object distance. Menggunakan data dalam Jadual 2, lukiskan graf saiz imej melawan jarak objek. [2 marks] [2 markah]

(d)

State one hypothesis for this experiment. Nyatakan satu hipotesis untuk eksperimen ini. …………………………………………………………………………………………… …………………………………………………………………………………………… [1 mark] [1 markah]

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Diagrams 3.1 and 3.2 shows an experiment to study the relationship between uphtrust and the weight of the water that is displaced. Rajah 3.1 dan Rajah 3.2 menunjukkan satu eksperimen untuk mengkaji hubungan di antara tujahan dan berat air yang disesarkan.

Diagram 3.1 Rajah 3.1

Diagram 3.2 Rajah 3.2 1511/2

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The results are as shown in Table 3. Keputusan ditunjukkan dalam Jadual 3. In air Dalam udara

Set of experiment Set eksperimen Reading of spring balance (N) Bacaan neraca spring (N)

In water Dalam air

Difference in weight (N) Perbezaan dalam berat (N)

0.6

0.6

1.8

Reading of mechanical weighing scale (N) Bacaan penimbang skala mekanikal (N)

0

Table 3 Jadual 3 (a)

Based on Diagram 3.2, write the reading of spring balance in Table 3. Berdasarkan Rajah 3.2, tuliskan bacaan neraca spring dalam Jadual 3. [1 mark] [1 markah]

(b)

State the variables in this experiment. Nyatakan pembolehubah dalam eksperimen ini. (i) Constant variable Pembolehubah dimalarkan ……………………………………………………………………………………… (ii)

Responding variable Pembolehubah bergerakbalas ……………………………………………………………………………………… [2 marks] [2 markah]

(c)

(d)

Based on Table 3, state the relationship between upthrust and the weight of the water that is displaced. Berdasarkan Jadual 3, nyatakan hubungan di antara tujahan dan berat air yang disesarkan. …………………………………………………………………………………………… [1 mark] [1 markah] Tick (√ ) the vehicles that use this principle. Tanda (√ ) kenderaan yang menggunakan prinsip ini. Aeroplane Kapal terbang

Submarine Kapal selam

Ship Kapal laut

Tank Kereta kebal [1 mark] [1 markah]

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8

Diagram 4 shows an experiment to compare the effect of acid and alkali on latex. Rajah 4 menunjukkan satu eksperimen untuk membandingkan kesan asid dan alkali ke atas lateks.

Diagram 4 Rajah 4 The result are as shown in Table 4. Keputusan eksperimen ditunjukkan dalam Jadual 4. Set of the experiment Set eksperimen

Observation Pemerhatian

A

Latex coagulated Lateks menggumpal

B

Latex does not coagulate Lateks tidak menggumpal

C

Latex coagulated Lateks menggumpal Table 4 Jadual 4

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State the hypothesis for this experiment. Nyatakan hipotesis bagi eksperimen ini. ……………………………………………………………………………………………

(b)

…………………………………………………………………………………………… [1 mark] [1 markah] State the variables in this experiment. Nyatakan pembolehubah dalam eksperimen ini. (i)

Constant variable Pembolehubah dimalarkan ………………………………………………………………………………………

(ii)

Manipulated variable Pembolehubah dimanipulasi ……………………………………………………………………………………… [2 marks] [2 markah]

(c)

Based on this experiment, what causes latex in beaker C to coagulate ? Berdasarkan eksperimen ini, apakah yang menyebabkan lateks dalam bikar C menggumpal? …………………………………………………………………………………………… [1 markah]

(d)

After one day, excess hydrochloric acid is added to the beaker in Set B. What observation can be made about the latex? Selepas satu hari, asid hidroklorik berlebihan di tambah ke dalam bikar dalam Set B. Apakah pemerhatian yang boleh dibuat mengenai lateks ini ? …………………………………………………………………………………………… [1 mark] [1 markah]

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10 Section B Bahagian B [30 marks] [30 markah] Answer all questions in this section. Jawab semua soalan dalam bahagian ini.

5.

Diagram 5 shows the inheritance of colour blindness in human. Rajah 5 menunjukkan pewarisan sifat buta warna dalam manusia.

Diagram 5 Rajah 5 (a)

Complete the above Diagram 5. Lengkapkan Rajah 5. [2 marks] [2 markah]

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What is the probability of having: Apakah kemungkinan untuk mendapat : i.

ii.

(c)

(d)

Colour-blind son Lelaki buta warna

: …………………………...………………..……………

Normal daughter but carrier Perempuan normal tetapi pembawa: …………………………………………..… [2 marks] [2 markah]

Colour-blindess known as a sex-linked heredity diseases . State the reason. Buta warna dikenali sebagai penyakit baka terangkai seks. Nyatakan sebabnya. …………………………………………………………………………………………… [1 mark] [1 markah] Name one other example of sex-linked heredity diseases. Namakan satu contoh lain penyakit baka terangkai seks. …………………………………………………………………………………………… [1 mark] [1 markah]

6.

Diagram 6 shows the position of some endocrine glands in humans. Gambarajah 6 menunjukkan kedudukan kelenjar endokrin dalam badan manusia.

Diagram 6 Rajah 6 1511/2

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Name the glands B and D in Diagram 6. Namakan kelanjar B dan D dalam Diagram 6. B: …………………………………………….. D: ………………………….…………………. [2 marks] [2 markah]

(b)

i.

What is the function of hormone produced by glands C ? Apakah fungsi hormon yang dihasilkan oleh kelenjar C? ………………………………………………………………………………………

ii.

State the effect of hormone deficiency produced by gland C? Nyata kesan kekurangan hormon yang dihasilkan oleh kelenjar C? ……………………………………………………………………………………… [2 marks] [2 markah]

(c)

(d)

How are hormones that produced by the glands in Diagram 6 transported in the body? Bagaimanakah hormon yang dihasilkan oleh kelanjar-kelanjar dalam Rajah 6 diangkut dalam badan? …………………………………………………………………………………………… [1 mark] [1 markah] Which gland act as the main endocrine gland? Kelenjar manakah yang bertindak sebagai kelenjar endokrin utama? …………………………………………………………………………………………… [1 mark] [1 markah]

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SULIT 7.

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Diagram 7 shows a process that occurs in nuclear reactor. Rajah 7 menunjukkan suatu proses yang berlaku di mana reaktor nuklear.

Diagram 7 Rajah 7 (a)

Name the type of nuclear reaction shown in Diagram 7. Namakan jenis tindak balas nuklear yang ditunjukkan pada Rajah 7. …………………………………………………………………………………………… [1 mark] [1 markah]

(b)

What is the function of the control rods? Apakah fungsi rod pengawal? …………………………………………………………………………………………… [1 mark] [1 markah]

(c)

What is the radioactive element used in Diagram 7 to produce nuclear energy. Apakah bahan radiaktif yang digunakan dalam Rajah 7 untuk menghasilkan tenaga nuklear. …………………………………………………………………………………………… [1 mark] [1 markah]

(d)

Name the part that control the temperature of the reactor in Diagram 7. Namakan bahagian yang mengawal suhu reaktor dalam Rajah 7.

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State two advantages of using nuclear energy. Berikan dua kebaikan penggunaan tenaga nuklear. 1. ………………..………………………………………………………………………. 2. ………………………………………………………………………………………... [2 marks] [2 markah]

8.

Diagram 8 shows an environmental phenomenon caused by chemical substance, chlorofluorocarbons ( CFCs) on layer X. Rajah 8 menunjukkan fenomena alam sekitar disebabkan bahan kimia, klorofluorokarbon (CFC) ke atas lapisan X.

Rajah 8 Diagram 8 (a)

What happened to layer X? Apa yang berlaku kepada lapisan X ? …………………………………………………………………………………………… [1 mark] [1 markah]

(b)

Name ray Q in Diagram 8. Namakan sinar Q dalam Rajah 8. [1 mark] [1 markah]

(c)

State the main function of layer X. Nyatakan fungsi utama lapisan X. …………………………………………………………………………………………… [1 mark] [1 markah]

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Give one negative effect of ray Q on humans and plants. Beri satu kesan negative sinar Q ke atas manusia dan tumbuhan. i.

Human Manusia ………………………………………………………………………………………

ii.

Plants Tumbuhan ……………………………………………………………………………………… [2 marks] [2 markah]

(e)

Mark ( √ ) the objects below that contribute to the above environmental phenomenon. Tandakan ( √ ) objek-objek di bawah menyumbang kepada fenomena alam sekitar di atas.

Television Televisyen

Refrigerator Peti sejuk

Microwave oven Ketuhar mikro

Aerosol spray Penyembur Aerosol

[1 mark] [1markah] 9.

Diagram 9 shows the types of food that need to be kept in a proper place before it could be used by consumers. Rajah 9 menunjukkan beberapa jenis makanan yang perlu disimpan di dalam tempat yang sesuai sebelum ianya boleh digunakan oleh pengguna.

Diagram 9 Rajah 9 1511/2

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i.

What is the best method to preserve of foods shown in Diagram 9? Apakah kaedah terbaik untuk menyimpan makanan yang ditunjukkan dalam Rajah 9? ………………………………………………………………………………………

ii.

What is the range of optimum temperature for the method stated in 9(a)i. ? Apakah julat suhu optima bagi kaedah yang dinyatakan pada 9 (a)i. ?

……………………………………………………………………………………… [2 marks] [2 markah] State one advantage of this method. Nyatakan satu kelebihan kaedah ini.

(b)

…………………………………………………………………………………………… [1 mark] [1 markah] (c)

The following diagram shows three types of processed food. Rajah berikut menunjukkan tiga jenis makanan yang diproses.

State the method used to process the foods. Nyatakan kaedah yang digunakan untuk memproses makanan tersebut. X : .......................................................................................................................................... Y : .......................................................................................................................................... Z : .......................................................................................................................................... [3 marks] [3 markah]

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17 Section C Bahagian C [20 marks] [20 markah] Answer Question 10 and either Question 11 or Question 12. Jawab Soalan 10 dan sama ada Soalan 11 atau Soalan 12.

10

Study the following statement : Kaji pernyataan berikut: Humidity is essential for microorganisms growth on any suitable medium. Kelembapan adalah perlu untuk pertumbuhan mikroorganisma pada sebarang medium yang sesuai.

(a)

Suggest one hypothesis to investigate the above statement. Cadangkan satu hipotesis untuk mengkaji pernyataan di atas. [1 mark] [1 markah]

(b)

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Using two pieces of fresh bread, oven and other apparatus, describe an experiment to test your hypothesis in 10(a) based on the following criteria : Dengan menggunakan dua keping roti yang segar, ketuhar dan radas lain, huraikan satu eksperimen untuk menguji hipotesis di 10(a) berdasarkan kriteria berikut : i.

Aim of the experiment Tujuan eksperimen

[1 mark] [1 markah]

ii.

Identification of variables Mengenalpasti pembolehubah

[2 marks] [2 markah]

iii.

List of material and apparatus Senarai bahan dan radas

[1 mark] [1 markah]

iv.

Procedure Prosedur

[4 marks] [4 markah]

v.

Tabulation of data Penjadualan data

[1 mark] [1 markah]

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SULIT 11.

18

(a)

Explain the importance of taking good nutrition and practicing good eating habits. Terangkan kepentingan pengambilan pemakanan dan mengamalkan tabiat pemakanan yang baik. [4 marks] [4 markah]

(b)

You are an obese teenager. You are advised by your doctor to have a balanced diet suitable for you. You have three types of menu, Menu A, B or C as shown in Table 11 to be chosen for your dinner. Anda adalah seorang remaja yang gendut. Anda telah dinasihatkan oleh doktor untuk mengambil makanan yang seimbang bersesuaian dengan anda. Anda mempunyai tiga jenis menu, Menu A, B, dan C seperti yang ditunjukkan dalam Jadual 11 untuk dipilih bagi makan malam anda. Menu

Contents

Total Energy (kJ)

Menu

Kandungan

Jumlah Tenaga (kJ)

A

B

C

A plate of rice, fried chicken, fried mee, a glass of non-fat milk and a banana. Sepinggan nasi, ayam goreng, mee goreng, segelas susu tanpa lemak, dan sebiji pisang. Two pieces of butter bread, fried mix vegetables with prawns, a bowl of egg soup, a glass of full cream milk and an orange. Dua keping roti mentega, sayur campur goreng udang, semangkuk sup telur, segelas susu penuh krim, dan sebiji oren. A small bowl of rice, mix bean-vegetables soup, steamed fish, a glass of lemon juice and a piece of papaya. Semangkuk kecil nasi, sup sayur campuran kekacang, ikan stim, segelas jus lemon, dan sepotong betik.

6158

4750

4550

Table 11 Jadual 11

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Choose the most suitable menu for your dinner as advised by your doctor. Pilih menu yang paling sesuai untuk makan malam anda seperti yang dinasihatkan oleh doctor anda . Explain your choice based on the following aspects: Terangkan pilihan anda berdasarkan aspek-aspek berikut : i.

Aim of choice Tujuan pilihan [3 marks] [3 markah]

ii.

Explanation on the advantages of each menu based on the food class and its function or the total energy calculated for the menu. Penerangan tentang kelebihan setiap menu berdasarkan kelas makanan dan dan juga pada jumlah tenaga yang telah dihitung bagi menu itu. [3 marks] [3 markah]

iii.

List of types of menu according to its priority . Senarai jenis menu mengikut keutamaan. [1 mark] [1 markah]

iv.

The reason for your choice. Sebab kepada pemilihan anda . [1 mark] [1 markah]

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SULIT 12

(a)

20

State two differences between atomic elements and ionic compounds. Give one example of an atomic elements and ionic compunds. Nyatakan dua perbezaan antara unsur atom dan sebatian ion. Beri satu contoh unsur atom dan sebatian ion. [4 marks] [4 markah]

(a)

Diagram 12 shows four examples of molecular substances. Rajah 12 menunjukkan empat contoh bahan molekul.

Diagram 12 Rajah 12 Study the examples in diagram 12 and construct the concept of molecular substances. Kaji contoh-contoh dalam Rajah 12 dan bina konsep bahan molekul. Your answer should be based on the following aspects: Jawapan anda hendaklah berdasarkan aspek-aspek berikut: 

Identify two common characteristics Kenal pasti dua ciri sepunya [2 marks] [2 markah]



Give one other example of molecular substances Beri satu contoh lain bagi bahan molekul [1 mark] [1 markah]





Give one example of non-molecular substances and the reason for your choice. Beri satu contoh bukan bahan molekul dan sebab kepada pemilihan anda [2 marks] [2 markah] State the actual concept of molecular substances. Nyatakan konsep sebenar bahan molekul. [1 mark] [1 markah] END OF QUESTION PAPER KERTAS SOALAN TAMAT

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Paper 2 Scince Excel 2, SEPTEMBER 2009 MARKING SCHEME SECTION A ( 20 MARKS ) Q (a) 1 Type of nail Iron nail

MARKING CRITERIA

MARK

Observation Rust

Stainless steel nail

1

No Rust

(b) A stainless steel nail is more resistant to corrosion than an iron nail.

1

(c) Alloy is a material which is more resistance to corrosion compared to pure metals

1

(d) Iron scissors √ (e) More rust is formed

1

Iron key √ TOTAL

2

(a) 1.5 cm (b) Real // inverted

1 2

(c) NOTE: All points transferred correctly – 1m Smooth line graph - 1m (d) The larger the object distance, the smaller the size of the image formed TOTAL 3

4

(a) 1.2 N (b) (i) The stone (ii) The weight of the stone (c) upthrust = weight of the water that is displaced (d) Tick (√) both submarine and ship TOTAL (a) Acids cause the latex to coagulate whereas alkalis prevent the latex from coagulating (b) (i) volume of latex (ii) Addition of acid or alkali or none (c) Latex in beaker C contains acid produced by bacteria / in the growth of bakteria (d) Latex coagulates immediately TOTAL

1 5M 1

1 5M 1 2 1 1 5M 1 2 1 1 5M

No 5a

SECTION B: 30 marks Marking Criteria

Mark

Note : 1. Gametes all correct – 1 mark 2. Offspring all correct – 1 mark b

1 1

i. 25% / ¼ ii. 25% / ¼

c

Recessive gene ( for colour blindness) found on the human X chromosome.

d

Haemophilia / Thalassamiea

1 1 1

TOTAL 6a b c d 7a b c d e

B : Thyroid (gland) D : Adrenal (gland) i.To control glucose level ( in the body ) ii.Diabetes (mellitus) Bloodstream Pituitary ( gland ) TOTAL To maintain steady rate of fission To control the rate of nuclear fission by absorbing neutrons Uranium Condensor cooling water // Cooling system Produce electrical energy //Cheap source of energy // less accident happened / / produced huge amount of energy /a lot of useful radioisotopes Note : Accept any two correct answer TOTAL

8a b c e d

Formation of hole /depletion of layer X Ultraviolet rays To prevent from ultraviolet rays ( from reaching the Earth ) Humans : Skin cancer / cataract / eyes diseases / lower immune system Plants : Reduce the rate of photosynthesis / reduce production of crops Mark ( √ ) refrigerator and aerosol TOTAL

9a b c

i. Cooling ii. 0 – 10 ˚C Prevent the growth of microorganism / food spoilage X : Pasteurisation Y : Drying Z : Canning

1 6M 1 1 1 1 1 1 6M 1 1 1 1 2

6M 1 1 1 1 1 1 6M 1 1 1 1 1 1

TOTAL

6M

Paper 2 Science EXCEL 2 - 2009 MARKING SCHEME SCIENCE PAPER 2 SECTION C Question 10.(a)

10.(b)

Marking Criteria

Mark

Hypothesis : Microorganisms need humidity / water to grow // Humidity is essential for microorganisms growth . Aim : To investigate that microorganisms need humidity for growth. Identification of variables : Constant variable : Type of bread/ Place where pieces of bread are kept Manipulated variable : Presence of water (in bread) / Humidity Responding variable : Growth of microorganisms / Presence of microorganisms Materials & apparatus Two pieces of fresh bread, Petri dish and oven

1 mark

2 marks

1 mark

Procedure 1. The fresh breads is put into the Petri dish and labeled as A and B. 2. Bread A is put into the oven to dry it whereas bread B is not. 3. Both bread will be left on the table. 4. Observation is done after 2-3 days and recorded. Tabulation of data Presence of water in bread

1 mark

Presence/ Growth of microorganisms

4 mark

1 mark

Presence of water Absent of water

Total

10 marks

Question 11.(a)

Marking Criteria Taking good nutrition and practising good eating habits are important because we :  

10.(b)(i)

Mark 4 marks

want to avoid being over nourished which may lead to obesity. want to stay healthy by having a balanced diet. want to avoid being malnourished want to avoid diseases like scurvy (lack of vitamin C) and rickets (lack of vitamin D).

Aim of choice  To choose the most suitable menu for me as advised by doctor  To choose a balanced diet menu to avoid obesity.

1 mark

Explanation on the advantages of each menu based on the food class and its function  Menu A – Contains carbohydrates /fats for energy / protein for growth /vitamin C for health  Menu B - Contains fats / carbohydrates for energy/ protein for growth / vitamin C for health.  Menu C - Contains carbohydrates for energy/protein for growth / vitamin C for health.

1 mark

(b) (ii)

(b) (ii)

OR

1 mark 1 mark

Explanation on the advantages of each menu based on the total energy calculated for the menu. (b) (iii)

(b) (iv)

  

Menu A – Has the highest calorie among the menus. Menu B - Is the second higest/ lowest calorie Menu C - Has the lowest calorie.

List of types of menu according to its priority 1. Menu C 2. Menu B 3. Menu A The reason for your choice. Menu C is chosen because it is not too rich in calorie and can avoid getting more obese Total

1 mark 1 mark 1 mark 1 mark

10 marks

Question 12.(a)

Marking Criteria Two differences between atomic elements and ionic compounds are: Atomic elements Particles are atoms Form stable structure with strong metallic bonds Some are soluble in water but mostly not soluble Conduct electricity in solid and liquid state Have free electrons Example accept suitable examples

12.(b)

Mark

Ionic compounds Particles are ions Form crystals with strong electrostatic forces between ions Soluble in water Conduct electricity in molten or in aqueous of solution Have exchange of electrons Example

(Any 2 differences ) *Two common characteristics of molecular substances are: - Particles are small molecules - Form simple molecules with weak intermolecular forces - Mostly in gases physical state - High melting point - High boiling point - Soluble in water - Do not conduct electricity (Any two) *One other example of molecular substances ( Any suitable example of molecular substances) *One example of non molecular substances and give reason for your choice ( Any suitable example of non molecular substances and state specifically characteristics.) [E.g – Iron, because it has high melting point]

4 marks

2 marks

1 mark

1 mark 1 mark

- must relate specificly to the the characteristics of molecular substances *Relate the common characteristics to construct the concept of molecular substances - Molecular substances is a substance that have low melting point and soluble in water. Total

1 mark

10 marks