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JABATAN PELAJARAN TERENGGANU

SET 4

DO NOT OPEN THIS TEST PAPER UNTIL YOU ARE TOLD TO DO SO

1 This question paper consists of three sections: Section A,Section B and Section C

2 Answer all questions in Section A and Section B .Write your answers for Section A and Section B clearlyin the space provided on the question paper.

3 For Section C , answer Question 10 and choose another Question 11 or Question 12 . Write your answer for

Section C on the lined pages provided at the end of this paper. Answer should be clear and logical.

4 The marks allocated for each sub-part of a questionare shown in brackets.

5 The time suggested to complete Section A is 60 minutes,Section B is 50 minutes and Section C is 40 minutes.

1511/2SciencePaper 22 hours

SCIENCE

Paper 2

Two Hours and Thirty Minutes

For Examiners UseSection Question Marks

A

1234

B

56

789

C101112

Total

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6 You are allowed to answer the question in Englishor Bahasa Melayu.

This question paper consists of 15 printed pages

Section A[20 marks ]

Answer all questions Jawab semua soalan

The time suggested for this section is 60 minutesMasa yang dicadangkan untuk bahagian ini ialah 60 minit

1 Diagram 1 shows an experiment to study the changes in the states of matter when it is heated. Rajah 1 menunjukkan eksperimen untuk mengkaji perubahan keadaan jirim apabila dipanaskan.

The result of the experiment is shown in Table 1. Keputusan eksperimen ditunjukkan dalam Jadual 1.

Time / minnuteMasa / minit

Temperature / 0CSuhu / 0C

0 05 0

10 3615 6820 10025 100

(a) Write one observation based on Diagram 1.Tuliskan satu pemerhatian berdasarkan Rajah 1.

...........................................................................................................................................................[1 mark ]

2

beaker

ais

thermometer

Ice before heating Ais sebelum dipanaskan Ice after heating

Ais selepas dipanaskan

thermometerice

Diagram 1 Rajah 1

Table 1 Jadual 1

Bunsen bunner

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(b) Based on Table 1, draw a graph of temperature against time. Berdasarkan Jadual 1, lukiskan graf suhu melawan masa.

0 5 10 15 20 25 30 35

[2 marks ](c) Base on the graph in (b), determine the state of matter at 76 oC.

Berdasarkan graf di (b) , tentukan keadaan jirim pada suhu 76 oC.

...........................................................................................................................................................[1 mark ]

(d) What is the conclusion from this experiment ?

Apakah kesimpulan daripada ekperimen ini?

...........................................................................................................................................................[1 mark ]

3

20

40

60

80

100Suhu / 0 C

Masa / min

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2 Diagram 2(a) and 2(b) shows the experiment to study the relationship between object distance of lens P and the characteristic of image formed. Rajah 2(a) dan 2(b) menunjukkan eksperimen untuk mengkaji hubungan di antara jarak objek kanta P dengan sifat imej yang terhasil .

Diagram 2(a) Rajah 2(a)

Diagram 2(b) Rajah 2(b)

(a) Complete ray diagram on Diagram 2(a) and Diagram 2(b) to show image formed. Lengkapkan rajah sinar pada Rajah 2(a) dan Rajah 2(b) untuk menunjukkanimej yang terhasil.

[2 marks ]

(b) Measure and write image distance on Diagram 2(a)Ukur dan tulis jarak imej pada rajah 2(a) .

...........................................................................................................................................................[1 mark ]

(c) Write one hypothesis based on Diagram 2(a) and Diagram 2(b)Tuliskan satu hipotesis berdasarkan Rajah 2(a) dan Rajah 2(b).

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

4

2F F F 2F

2F F F 2F

LensKanta P

Lens PKanta P

ObjectObjek

Object Objek

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[1 mark ]

(d) What is the constant variable in this experiment ? Apakah pembolehubah yang dimalarkan dalam eksperimen ini?

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

[1 mark ]3 Diagram 3 shows the arrangement of the apparatus to compare the hardness of copper and brass.The diameter of the dent in each block is measured when the weight is released and the results arerecorded.

Rajah 3 menunjukkan susunan radas bagi membandingkan sifat kekerasan kuprum dan loyang. Diameter lekukan yang terbentuk pada setiap bongkah diukur apabila pemberat dijatuhkan dandicatatkan.

Diagram 3 Rajah 3

The result is recorded on Table 2 Keputusan yang diperolehi dicatatkan dalam Jadual 2.

Block Bongkah

Diameter lekuk / cmThe diameter of the dent/cm

The average of the dent/cm Purata diameter lekuk / cmExperiment 1

Eksperimen 1 Experiment 2 Eksperimen 2

Copper Kuprum 1.2 1.4

1.3

Brass Loyang 0.8 0.9 ...........................................

Table 2 Jadual 2

(a) Based on the experiment above, complete table 2 Berdasarkan eksperimen di atas, lengkapkan Jadual 2. [1 mark ]

(b) Based on Table 2, state the observation in this experiment. Berdasarkan Jadual 2, nyatakan pemerhatian bagi eksperimen ini.

5

RulerPembaris meter

Retort standKaki retot Weight 100g

Pemberat 100 g

Block Bongkah

Steel ball Bebola keluli

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...........................................................................................................................................................[1 mark ]

(c) What is the inference based on the observation above ? Apakah inferens berdasar pemerhatian di atas?

...........................................................................................................................................................[1 mark ]

(d) State the operational definition of brass. Nyatakan definisi secara operasi bagi loyang.

...........................................................................................................................................................[1 mark ]

(e) Predict the diameter of the dent of copper block if weight 200 g is used in this experiment. Ramalkan diameter lekuk logam kuprum jika pemberat 200 g digunakan dalam eksperimen ini.

...........................................................................................................................................................[1 mark ]

4 Diagram 4 shows the experiment of coagulation of latex. Rajah 4 menunjukkan eksperimen penggumpalan lateks.

Diagram 4 Rajah 4

Table 3 shows the result of the experiment. Jadual 3 menunjukkan keputusan eksperimen itu.

Beaker Bikar

Substance Bahan

The time duration of coagulation of latex (minute)Tempoh penggumpalan susu getah (minit)

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Beaker B Bikar B

Beaker A Bikar A

Latex Lateks

Latex + ethanoic acid Lateks + asid etanoik

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Beaker A Bikar A

Latex + ethanoic acid Lateks + asid etanoik 2

Beaker A Bikar B

Latex Lateks 45

Table 3Jadual 3

(a) State one hypothesis in this experiment. Nyatakan satu hipotesis untuk eksperimen ini.

...........................................................................................................................................................[1 mark ]

(b) State one inference based on the observation in beaker B. Nyatakan satu inferens berdasarkan pemerhatian pada bikar B.

...........................................................................................................................................................[1 mark ]

(c) What is the responding variable in this experiment ? Apakah pembolehubah bergerakbalas eksperimen ini?

...........................................................................................................................................................[1 mark ]

(d) How to fix the constant variable in this experiment ? Bagaimanakah pembolehubah yang dimalarkan ditetapkan dalam eksperimen ini?

...........................................................................................................................................................[1 mark ]

(e) Predict what happens if latex is mixed with alkali ?Ramalkan apakah yang terjadi kepada lateks jika dicampurkan dengan alkali?

...........................................................................................................................................................[1 mark ]

Section B

[30 marks ] Answer all questions in this section

The time suggested to complete this section is 50 minutes

5 Diagram 5 shows an impulse pathway when a student accidentallytouches a hot pot.

Rajah 5 melintasan impuls apabila seorang pelajar tersentuh periuk panas.

7

P ..............................

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(a) Name P and Q in the boxes provided in Diagram 5.

Namakan P dan Q dalam kotak yang disediakan pada Rajah 5 . [2 mark ]

(b) In Diagram 5, mark with arrow to show the pathway of impulses. Pada Rajah 5, tandakan dengan anak panah arah lintasan impuls saraf. [1 mark ]

(c) What will happen to students muscle when he accidentally touches the hot pot ? Apakah yang berlaku pada otot apabila pelajar ini tersentuh periuk panas?

...........................................................................................................................................................[1 mark ]

(d) (i) What is the type of action involved in Diagram 5 ? Apakah jenis tindakan yang terlibat pada Rajah 5?

...........................................................................................................................................................[1 mark ]

(ii) Which part of the nervous system controls the action in d(i) ? Bahagian manakah pada sistem saraf yang mengawal tindakan di (d) (i)?

...........................................................................................................................................................[1 mark ]

6 Diagram 6 shows the list of organisms in paddy field Rajah 6 menunjukkan senarai organisma hidup di sawah padi.

8

Q ...........................................

Mice( Tikus )Grasshopper ( Belalang)

Paddy (Pokok padi)Sparrow (Burung pipit)

Eagle (Helang)Owl (Burung hantu)

Sensory neurone

Neuron deria

Effector Efektor

Diagram 5

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Diagram 6 Rajah 6

(a) Based on Diagram 6, name

Berdasarkan Rajah 6, namakanProducer : ...............................................................................................................

Pengeluar :

Primary consumer : ................................................................................................... Pengguna primer :

[2 marks ]

(b) Based on Diagram 6, build one food chain in the boxes provided.Berdasarkan Rajah 6, binakan satu rantai makanan dalam kotak yang disediakan.

[1 mark ]

(c) State one characteristic of producer. Nyatakan satu ciri pengeluar .

...........................................................................................................................................................[1 mark ]

(d) State the energy change in the food chain

Nyatakan perubahan tenaga dalam rantai makanan.

...........................................................................................................................................................[1 mark ]

(c) What would happen to the primary consumer if the producers died ? Apakah kesan terhadap pengguna primer jika pengeluar mati?

...........................................................................................................................................................[1 mark ]

7 Diagarm 7.1 shows the water flows in the Bernoulli Tube. Rajah 7.1 menunjukkan aliran air dalam Tiub Bernoulli .

9

A B C

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Diagram 7.1

(a) Mark the water level at Tube B.Tandakan aras air pada Tiub B. [1 mark ]

(b) W, X and Y are the points in the water that flows in Bernoulli Tube.Which area has

W, X dan Y ialah titik di dalam air yang mengalir dalam Tiub Bernoulli. Kawasan yang manakah mempunyai

(i) the higher velocity of water ?aliran air yang paling laju?

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

(ii) the higher pressure of water ?tekanan air paling tinggi?

...........................................................................................................................................................[2 marks ]

(c) (i) State the relationship between the velocity and the pressure of water in Diagram 7.1 Nyatakan hubungan di antara kelajuan air dengan tekanan air dalam Rajah 7.1.

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

(ii) Name the shape of flight which uses Bernoulli Principle Namakan bentuk pada sayap pesawat terbang yang menggunakan prinsip Bernoulli.

...........................................................................................................................................................[ 2 marks ]

(c) Diagram 7.2 shows the Bernoulli Tube which both ends of tubes are blocked.Mark the water level in tube B and C in Diagram 7.2

Rajah 7.2 menunjukkan Tiub Bernoulli ditutup kedua-dua hujungnya.Tandakan aras air pada tiub B dan C pada Rajah 7.2.

10

w YXWater inlet Air masuk Water outlet Air keluar

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Diagram 7.2 [1 mark ]

8 Diagram 8 shows the simple nitrogen cycle. Rajah 8 menunjukkan kitar nitrogen ringkas.

(a) Complete X and Y in Diagram 8 using the information given in the boxes. Lengkapkan X dan Y pada Rajah 8 dengan menggunakan maklumat di bawah.

11

Lightning (Kilat)Nitrifying Bacteria ( Bakteria penitritan )

Denitrifying Bacteria ( Bakteria pendenitritan )

Diagram 8

Nitrogen inatmosfere

Gas Nitrogen di udara

Nitrate in the soil Nitrat

dalam tanah

Y : ...................................X : ...............................

Nirogen-Fixing Bacteria Bakteria pengikat nitrogen

PlantTumbuhan

Animal Haiwan

Ammonium compoundSebatian ammonium

A B C

Air

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[2 marks ]

(b) What is the role of Nitrogen-fixing bacteria in Diagram 8 ? Apakah peranan bakteria pengikat nitrogen pada Rajah 8?

...........................................................................................................................................................[1 mark ]

(c) How does nitrate compound transfered to the plant ? Bagaimanakah sebatian nitrat dapat dipindahkan ke dalam tumbuhan?

...........................................................................................................................................................[1 mark ]

(d) Name the bacteria which converted ammonium compund to nitrate compund in the soil. Namakan bakteria yang menukarkan sebatian ammonium kepada sebatian nitrat dalam tanah.

...........................................................................................................................................................[1 mark ]

(e) Name another nature cycle besides the cycle above. Namakan satu kitar semulajadi selain daripada kitar di atas.

...........................................................................................................................................................[1 mark ]

9 Diagram 9 shows the modulation process between radio waves and audio waves frequency to formmodulated waves in the transmission system.

Rajah 9 menunjukkan proses modulasi diantara gelombang radio dengan gelombang frekuensi audiountuk membentuk gelombang termodulasi dalam sistem pemancar radio.

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P :..............................................

Q :..............................................

R :..............................................

+

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Diagram 9

(a) Complete P, Q and R in the boxes in Diagram 9 using the following information

Lengkapkan P, Q dan R dalam petak pada Rajah 9 dengan maklumat berikut .Modulated waves (Gelombang termodulasi)Radio waves (Gelombang radio)Audio waves frequency (Gelombang frekuensi audio)

[3 marks ](b) (i) What is the type of modulated waves shown in Diagram 9 ?

Apakah jenis gelombang termodulasi yang di tunjukkan dalam Rajah 9?

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

(ii) Draw another type of modulated waves in the box provided. Lukiskan gelombang termodulasi yang lain dalam petak di bawah.

[2 marks ](c ) Name a component in radio transmiter system that produce radio waves.

Namakan komponen dalam sistem pemancar radio yang menghasilkan gelombang radio .

...........................................................................................................................................................[1 mark ]

Section C

[20 marks ]

Answer Question 10 and any one of Question 11 or Question 13 .The time suggested to complete this section is 40 minites.

10 Study the following statement ; Kaji pernyataan berikut;

13

Different metals show different reactivity when react with dilute acid. Logam-logam menunjukkan kereaktifan yang berlainan apabila bertindak balas dengan asid

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(a) Suggest one hypothesis to investigate the above statement.Cadangkan satu hipotesis untuk menyiasat pernyataan di atas. [1 mark ]

(b) Using the magnesium powder, aluminium powder, zinc powder, dilute hydrocloric acid, plasic basin, test tube and other apparatus, describe an experiment to test your hypothesis in (a) basedon the following criteria :

Dengan menggunakan serbuk magnesium , serbuk aluminium , serbuk zink , asid hidroklorik cair , besen plastik, tabung uji dan radas-radas lain, huraikan satu eksperimen untuk mengujihipotesis di (a) berpandukan kriteria berikut:

(i) Aim of the experimentTujuan eksperimen [1 mark ]

(ii) Identification of variablesMengenalpasti pembolehubah [2 marks ]

(iii) List of apparatus and materialsSenarai radas [1 mark ]

(iv) Procedure Prosedur [4 marks ]

(v) Tabulation of data Penjadualan data [1 mark ]

11 (a) Explain two uses of the following microoganisms ;Terangkan dua kegunaan setiap mikroorganisma berikut;

(i) bacteriabakteria

(ii) fungikulat

[4 marks ]

(b) After flood, the residents of Kampung Gajah Putih is affected by a disease which have thefollowing symptoms :

Continuously vomiting Diarrhoea

Fever

(Selepas banjir, penduduk penduduk di Kampung Gajah Putih telah dijangkiti oleh sejenis penyakit yang mempunyai gejala-gejala seperti berikut :

Muntah-muntah yang berterusan. Cirit-birit berterusan. Demam)

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Based on the symptoms above, explain the way of how to make a decision to control the diseasefrom spreading out. Your explanation should include the following :

Berdasarkan kepada gejala-gejala di atas, terangkan bagaimana cara untuk membuat keputusan bagi mengawal penyakit di atas dari terus merebak.Penerangan anda mestilahberdasarkan kepada perkara-perkara berikut;

Identify the problemMengenalpasti masalah Explain three methods to control the disease Terangkan tiga kaedah untuk mengawal penyakit tersebut. Arrange the methods according the priority

Menyusun kaedah-kaedah mengikut keutamaan. Make a decision

Membuat keputusan.[6 marks ]

12 (a) State four ways to increase the quality and quantity of food production. Berikan empa t usaha yang dijalankan oleh kerajaan untuk meningkatkan kualiti dankuantiti makanan negara kita.

[4 marks ]

(b) Pak Ali planted a lot of pineapple in his farm.Explain how Pak Ali can process his pineapple to make it long lasting and comercialized.

Your explanation should include the following : Problem statement Name of the method used Steps1 of the method used Evaluation the method

Pak Ali menanam pokok nenas yang banyak di ladangnya.Terangkan bagaimana Pak Ali boleh memproses nenasnya supaya lebih tahan lama danbersifat komersial.Penerangan anda mestilah mengandungi perkara berikut :

Pernyataan masalah Nama kaedah yang digunakan

Langkah-langkah yang perlu diambil dalam kaedah itu Penilaian kaedah[6 marks ]

.

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