PMR Percubaan 2009 MRSM Science Paper 2

8/14/2019 PMR Percubaan 2009 MRSM Science Paper 2

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SULIT 55/2

55/2 2009 Hak Cipta BPL(M) MARA SULIT1

Nama : .. No Maktab : ..

SULIT 55/2

55/2

Sains

Kertas 2

Ogos

2009

1 jam

MAKTAB RENDAH SAINS MARA

PEPERIKSAAN PERCUBAAN

PENILAIAN MENENGAH RENDAH 2009

SAINS

Kertas 2

Satu jam tiga puluh minit

Untuk Kegunaan Pemeriksa

Bahagian SoalanMarkahPenuh

MarkahDiperoleh

A

1 6

2 6

3 6

4 7

5 7

6 8

B7 10

8 10

Jumlah 60

Kertas Soalan ini mengandungi 28 halaman bercetak

JANGAN BUKA KERTAS SOALAN INI

SEHINGGA DIBERITAHU1 Tulis nama dan kelas anda pada ruang

yang disediakan.

2 Kertas soalan ini adalah dalam dwibahasa.

3 Soalan dalam bahasa Inggeris mendahuluisoalan yang sepadan dalam bahasa

Melayu.

4 Calon dibenarkan menjawab keseluruhanatau sebahagian soalan sama ada dalam

bahasa Inggeris atau bahasa Melayu.

5 Calon dikehendaki membaca maklumat di

halaman belakang kertas soalan ini.

[Lihat sebelah


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Section A

Bahagian A

[40 marks][40 markah]

Answer all questions.

Jawab semua soalan.

1 Diagram 1 shows the human excretory system.

Rajah 1 menunjukkan sistem perkumuhan manusia.

Diagram 1

Rajah 1

(a) On Diagram 1, label the organs P, Q and R using the following words:Pada Rajah 1, labelkan organ P, Q dan R menggunakan perkataan berikut:

[3 marks]

[3 markah]

Skin Lung Kidney

Kulit Peparu Ginjal

P : ..

Q : ..

R : .

For

Examiners

Use

1(a)


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(b) Draw lines to match each system of the human body with its function.Lukis garisan untuk memadankan setiap sistem badan manusia dengan

fungsi masing-masing.

System Function

Sistem Fungsi

[3 marks]

[ 3 markah ]

To support the weight of the body andprotect internal organs.

Untuk menyokong berat badan dan

melindungi organ dalaman.

To defend the body against disease.

Untuk mempertahankan badan terhadap

penyakit.

To digest food so that it can be readilyabsorbed.

Untuk mencernakan makanan supaya ia

mudah diserap.

To transmit messages to every part ofthe body.

Untuk menghantar maklumat ke seluruhbahagian badan.

Total A1

6

For

Examiner

Use

1(b)


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(b) Diagram 2.2 shows two different mugs, M and N containing equal volume ofhot coffee left to cool for 10 minutes.

Rajah 2.2 menunjukkan dua mug, Mdan Nmengandungi air kopi panasdengan isipadu yang sama dibiarkan menyejuk selama 10 minit.

Diagram 2.2

Rajah 2.2

Based on Diagram 2.2,

Berdasarkan Rajah 2.2,

(i) state how most heat is lost from the hot coffee?

nyatakan bagaimana haba paling banyak hilang daripada kopi panas?

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

[1 mark]

[1 markah]

(ii) coffee in which mug will cool faster?

Give the reason for the chosen mug.

kopi dalam mug yang manakah akan menyejuk dahulu?

Berikan sebab bagi mug yang dipilih.

Mug /mug : .........

Reason /sebab : .....................................................................................

.....................................................................................[2 mark]

[2 markah]

M NBlack ceramic mug

Mug seramik hitam

White ceramic mug

Mug seramik putih

2(b)(ii)

Total A2

6

2(b)(i)

For

Examiner

Use


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3 Diagram 3.1 shows the distribution of organisms J, K, L and M in a habitat. Rajah 3.1 menunjukkan taburan organisma , K, L dan Mdalam satu habitat.

Diagram 3.1Rajah 3.1

(a) Based on Diagram 3.1,Berdasarkan Rajah 3.1,

(i) which organism represents the secondary consumer?

organisma manakah yang mewakili pengguna sekunder?

[1 mark]

[1 markah]

(ii) build a complete food chain.

binakan rantai makanan yang lengkap.

[1 mark]

[1 markah]

M

KL

JL

K

K

K

K

M

M

MM

M

M

M

J

J

J

J

J

J

J

J

J

J

For

Examiners

Use

3(a)(i)

3(a)(ii)


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(iii) Circle the animals which may represent M.Bulatkan haiwan yang mewakili M.

Tigerharimau

GrassRumput

Cowlembu

[1 mark][1 markah]

(b) Producers synthesize food through photosynthesis. State the source of energy

for the process.

Pengeluar mensintesis makanan melalui fotosintesis. Nyatakan sumber tenaga

bagi proses ini.

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

[1 mark]

[1 markah]

(c) Diagram 3.2 shows the apparatus set up to study a factor needed forphotosynthesis.

Rajah 3.2, menunjukkan susunan radas bagi mengkaji satu faktor yang

diperlukan untuk fotosintesis.

Diagram 3.2

Rajah 3.2

(i) The plant is kept in the dark for two days, then exposed to sunlight.Why is the plant kept in the dark?

Tumbuhan diletakkan dalam gelap selama dua hari, kemudian didedahkan

kepada cahaya matahari.

Mengapa tumbuhan itu diletakkan dalam gelap?

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

[1 markah]

Black paper

Kertas hitam

3(b)

For

Examiner

Use

3(c)(i)

3(a)(iii)


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(ii) The leaf that is covered with black paper is tested for the presence of starch.On Diagram 3.3, shade the part of the leaf that turns blue black.

Daun yang diliputi oleh kertas hitam diuji kehadiran kanji.

Pada Rajah 3.3, lorekkan bahagian daun yang bertukarkepada biru gelap.

Diagram 3.3

Rajah 3.3

[1 mark]

[1 markah]

For

Examiners

Use

3(c)(ii)

Total A3

6


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4 Diagram 4.1 shows a female reproductive system. Rajah 4.1 menunjukkan sistem pembiakan perempuan .

Diagram 4.1

Rajah 4.1

(a) (i) Based on Diagram 4.1 , name the part labeled R.

Berdasarkan Rajah 4.1, namakan bahagian berlabel R.

[1 mark]

[1 markah]

(ii) Q is the place where the process of fusion between nucleus of sperm and

ovum to form a zygote. Label Q in Diagram 4.1.

Q adalah tempat di mana proses persenyawaan antara nukleus sperma danovum bagi pembentukkan zigot. Labelkan Q dalam Rajah 4.1.

[1 mark]

[1 markah]

R

For

Examiner

Use

4(a)(i)

4(a)(ii)


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(b)Diagram 4.2 shows a method of birth control in female reproductive system.Rajah 4.2 menunjukkan satu kaedah pencegahan kehamilan dalam sistem

pembiakan perempuan.

Diagram 4.2

Rajah 4.2

Based on the Diagram 4.2,Berdasarkan Rajah 4.2,

Name the device K : .

Namakan alatK

Describe how it works.

Terangkan bagaimana ia berfungsi.

..

..

....

[2 marks]

[2 markah]

Device K

AlatK

4(b)

For

Examiners

Use


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(c) Diagram 4.3 shows two types of flower J and K.Rajah 4.3 menunjukkan dua jenis bunga dan K.

J K

Diagram 4.3

Rajah 4.3

Based on the Diagram 4.3,Berdasarkan Rajah 4.3,

(i) mark ( ) in the box provided for wind pollinated flower.

tandakan ( ) dalam kotak disediakan bagi bunga yang didebungakan

oleh angin.

[1 mark]

[1 markah]

(ii) explain for the answer in (c)(i).

terangkan jawapan dalam (c)(i).

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

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

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

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

[2 markah]

4(c)(ii)

For

Examiner

Use

4(c)(i)

Total A4

7


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5 Diagram 5.1, shows two types of generator M and N.Rajah 5.1, menunjukkan dua jenis penjana M dan N.

M N


(a) (i) State the source of energy used by each generator.

Nyatakan sumber tenaga yang digunakan oleh setiap penjana.

M :

N :

[2 marks]

[2 markah]

(ii) State the energy change involved in generator M.

Nyatakan perubahan tenaga yang terlibat dalam penjana M.

.

[1 mark]

[1 markah]

TurbineTurbin

TurbineTurbin

5(a)(i)

For

Examiners

Use

5(a)(ii)


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Diagram 5.2 shows electricity transmission and distribution system.Rajah 5.2 menunjukkan sistem penghantaran dan pengagihan elektrik.


(b) (i) J and K are two types of transformers.

State the difference in the function ofJ and K.

dan Kmerupakan dua jenis tranformer. Nyatakan perbezaan fungsi danK.

[1 mark]

[1 markah]

(ii) What is the advantage of National Grid Network?

Apakah kelebihan Rangkaian Grid Nasional?

.....

[1 mark][1 markah]

National Grid Network

Rangkaian Grid Nasional

J

K

5(b)(i)

For

Examiner

Use

5(b)(ii)


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Current = Power

Voltage

Arus = Kuasa

Voltan

(c) Diagram 5.3, shows an electric rice cooker.Rajah 5.3, menunjukkan sebuah periuk nasi elektrik.

Diagram 5.3

Rajah 5.3

Calculate the current flow in an electric rice cooker labeled 3000 watts and

240 volts. Suggest the most suitable fuse that can be used.

Use the following formula:Hitungkan arus yang mengalir dalam periuk nasi elektrik yang bertanda

3000 watt dan 240 volt. Cadangkan nilai fius yang paling sesuai digunakan.

Gunakan formula berikut:

The most suitable fius can be used is : ___________ A

Fius yang paling sesuai digunakan ialah

[2 marks][2 markah]Total A5

7

5(c)

For

Examiners

Use


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Work done = Force X Distance

Kerja = Daya X Jarak

6 Diagram 6.1 shows a man pulling a load of 50kg up an inclined plane to theplatform (Assume 1kg = 10N).

Rajah 6.1 menunjukkan seorang lelaki menarik beban 50kg menaiki satah condong

ke pelantar (Andaikan 1kg = 10N).

Diagram 6.1

Rajah 6.1

(a) (i) In the box provided in Diagram 6.1, draw an arrow to show the direction

of force that opposes the motion of load.

Dalam kotak yang disediakan pada Rajah 6.1, lukiskan anak panah bagi

menunjukkan arah daya yang menentang pergerakan beban.

[1 mark][1 markah]

(ii) Name the force for the answer in (a)(i).Namakan daya bagi jawapan dalam (a)(i).

[1 mark]

[1 markah]

(iii) Calculate the work done. Use the following formula:

Hitungkan kerja yang dilakukan. Gunakan formula berikut:

Work done : . Nm

kerja

[1 marks][1markah]

Load

Beban

2 metre

2 meter

Platform

Pelantar

6(a)(ii)

For

Examiner

Use

6(a)(i)

6(a)(iii)


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(b) Diagram 6.2 shows two mountain bikes P and Q with tyres of different threads.Rajah 6.2 menunjukkan dua jenis basikal bukit P dan Q dengan tayaryang berbeza bunga..

Mountain bike PBasikal bukitP

Mountain bike QBasikal bukit Q

Diagram 6.2

Rajah 6.2

Based on Diagram 6.2,


(i) which mountain bike is more suitable to ride up a hill.basikal bukit yang manakah lebih sesuai untuk mendaki bukit.

...

[1 mark]

[1 markah]

(ii) explain for the answer in (c)(i).

terangkan jawapan dalam (c)(i).

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

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

[2 markah]

6(b)(i)

For

Examiners

Use

6(b)(ii)


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(c) Diagram 6.3 shows, a man find it is hard to push a trolley with stuck tyres.

Rajah 6.3 menunjukkan seorang lelaki mendapati sukar untuk menolak troli

yang tayarnya tersekat.

Diagram 6.3

Rajah 6.3Based on diagram 6.3,


(i) State one way to overcome the problem without unloading the trolley.Nyatakan satu cara untuk menyelesaikan masalah ini tanpa mengeluarkan

beban di dalam troli.

.

[1 mark]

[1 markah]

(iii) State the effect, if the problem is not overcome?

Apakah kesan, sekiranya masalah ini tidak diselesaikan?

.

.

.

[1 mark][1 markah]

6(c)(i)

For

Examiner

Use

6(c)(ii)

Total A6

8


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Section B

Bahagian B

[20marks]

[20 markah]

Answer all questions.

Jawab semua soalan.

7 Diagram 7.1 shows four types of plants with different support systems.

Rajah 7.1 menunjukkan empat jenis tumbuhan dengan sistem sokongan berbeza.

Orchid CucumberOrkid Timun

Rose Mangrove tree

Ros Pokok paya bakau

Diagram 7.1

Rajah 7.1

(a) State the parts of the plants that provide additional support to each of the plants.

Nyatakan bahagian tumbuhan yang membeir sokongan tambahan pada setiap

tumbuhan.

Plants

Tumbuhan

Additional support part

Bahagian sokongan tambahan

Orchid

Orkid

CucumberTimun

Rose

Ros

Mangrove tree

Pokok paya bakau

[4marks]

[4markah]

For

Examiners

Use

7(a)


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(b) Classify the plants into two groups based on the part that provide additionalsupport.

Kelaskan tumbuhan kepada dua kumpulan berdasarkan pada bahagian yang

memberi sokongan tambahan.

[4 mark]

[4 markah]

Common characteristics

Ciri sepunya

Name of the plant

Nama tumbuhan

Orchid, cucumber, mangrove tree, roseOrkid, timun, pokok paya bakau, ros

For

Examiner

Use

7(b)


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(c) Diagram 7.2 shows an activity to study the support system in a plant.

Rajah 7.2 menunjukkan satu aktiviti yang dijalankan untuk mengkaji sistem

sokongan dalam tumbuhan.


Based on Diagram 7.2, state one inference from the activity.

Berdasarkan Rajah 7.2, nyatakan satu inferens daripada aktiviti ini.

[1 mark][1 markah]

(d) Predict what will happen to the aquatic plant if the weight is remove frombeaker Q.

Ramalkan apa yang berlaku pada tumbuhan akuatik apabila pemberat

dikeluarkan dari bikar Q.

[1 mark]

[1 markah]

Total A7

10

7(c)

For

Examiners

Use

7(d)

Aquatic plant

Tumbuhan akuatik Weight

pemberat

Beaker Q

Bikar Q

Water

air


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8 Diagram 8.1 shows a sugar cube of similar size added to glass P and Q.After five minutes, the size of sugar cube is as shown in the diagram.

Rajah 8.1 menunjukkan satu gula kiub yang sama saiz dimasukan ke dalam gelas Pdan Q. Selepas lima mini,, saiz gula kiub ditunjukkan dalam Rajah.

ConditonKeadaan BeforeSebelum AfterSelepas

100ml water at 80oC

in glass P100ml air pada suhu

80oC dalam cawan P

100ml water at 35oC

in glass Q100ml air pada suhu

35oC dalam cawan Q

Diagram 8.1

Rajah 8.1

Based on your observation in diagram 8.1,Berdasarkan pada pemerhatian daripada Rajah 8.1,

(a) (i) What inference can be made?

Apakah inferens yang boleh dibuat?

[1 mark][1 markah]

(ii) State one hypothesis.Nyatakan satu hipotesis.

[1 mark]

[1 markah]

8(a)(i)

For

Examiner

Use

8(a)(ii)


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b) Diagram 8.2 shows the apparatus set-up to study the effect of water temperatureon the rate of dissolving.

Rajah 8.3 menunjukkan susunan radas bagi mengkaji kesan suhu air ke atas

kadar ketelarutan.

Diagram 8.2

Rajah 8.2

The student takes the following the steps:

Pelajar itu menjalankan langkah-langkah di berikut:

Step 1 : Fill a beaker with 100 ml distilled water at 40 0C

Langkah 1 : Isikan sebuah bikar dengan 100ml air suling bersuhu 400C

Step 2 : Add 5 grams of fine sugar to the water.

Langkah 2 : Tambahkan 5 gram gula halus ke dalam air.

Step 3 : Stir the mixture.

Langkah 3 : Kacau larutan tersebut.

Step 4 : Record the time taken for the fine sugar completely dissolve. Langkah 4 : Catatkan masa yang diambil untuk gula halus larut

sepenuhnya.

Step 5 : Repeat steps 1 to 3 are by using temperature water at 500

C,60

0C, 70

0C and 80

0C.

Langkah 5 : Ulang langkah 1 hingga 3 dengan menggunakan air bersuhu

500C, 600C, 700C and 800C.

5g of fine sugar

5g gula halus

Stir

Kacau

Thermometer

Jangka suhu

For

Examiners

Use


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Diagram 8.3 shows time taken for the fine sugar to dissolve completely.Rajah 8.3 menunjukkan masa yang diambil oleh gula untuk larut sepenuhnya..

Temperature (0C)

Suhu (0C)

Time (s)

Masa (s)

400C

500C

600C

55Reading

Bacaan

Reading

Bacaan

41Reading

Bacaan

For

Examiner

Use


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70

0

C

800C

Diagram 8.3

Rajah 8.3

(b) (i) Based on Diagram 8.3, record the readings of the stopwatch and complete

Table 8.4

Berdasarkan Rajah 8.4,rekodkan bacaan jam randik dan lengkapkanJadual 8.4

Temperate of water

Suhu air (0C )

Mass of solute (g)

Jisim bahan larut(g)

Time taken for sugar to

completely dissolve (s)

Masa diambil untuk gula larut

sepenuhnya (s)

40 5 55

50 5

60 5 41

70 5 34

80 5 27

Table 8.4

Jadual 8.4

[1 marks]

[1 markah]

34Reading

Bacaan

27Reading

Bacaan

8(b)(i)

For

Examiners

Use


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

Manipulated variable

Pembolehubah dimanipulasikan

Responding variable

Pembolehubah bergerak balas

Constant variable

Pembolehubah dimalarkan

Volume of water // mass of fine sugar

Isipadu air // jisim gula halus

[2 marks]

[2 markah ]

(iii) Use the graph provided on page 26 to answer this part of the question.

Gunakan graf yang disedikan dihalaman 26 untuk menjawap bahagian soalan ini.

Based on the reading in Table 8.4, draw a graph of time against temperature.

Berdasarkan bacaan dalam Jadual 8.4, lukis graf masa lawan suhu.

For

Examiner

Use

8(b)(ii)


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Graph for Question 8(b)(iii)Graf untuk soalan 8(b)(iii)

[2 marks]

[2 markah]

For

Examiners

Use

8(b)(iii)

Temperature / 0C

Suhu /0C20 40 60 80 100

Time / s

Masa / s

20

40

60

80

100


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(c) Based on Graph 8(b)(iii), state the relationship between the temperature ofwater and the time taken for sugar to dissolve completely.

Berdasarkan Graf 8(b)(iii), nyatakan hubungan antara suhu air dan kadargula

larut sepenuhnya.

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

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

[1 markah]

(d) Predict the time taken for fine sugar to dissolve completely in 100ml water at

650C.

Ramalkan masa yang di ambil untuk gula halus larut sepenuhnya dalam

100ml air yang bersuhu 650C .

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

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

[1 markah]

(e) Define operationally the meaning ofthe rate of dissolving.

Definasikan secara operasi kadar ketelarutan.

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

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

[1 markah]

END OF THE QUESTIONSKERTAS SOALAN TAMAT

Total A8

10

8(e)

8(d)

8(c)

For

Examiner

Use


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INFORMATION FOR CANDIDATESMAKLUMAT UNTUK CALON

This question paper consists of two sections: Section A andSection B.

Kertas soalan ini mengandungi dua bahagian: Bahagian A dan Bahagian B.

Write your answers in the spaces provided in the question paper.Tulis jawapan anda dalam ruang yang disediakan dalam kertas soalan. .

Show your working, it may help you get marks.

Tunjukkan kerja kira-mengira, ini membantu anda mendapat markah.

If you wish to change your answer, neatly cross out the answer that you have done. Then

write down the new answer.

Sekiranya anda hendak menukar jawapan, batalkan dengan kemas jawapan yang telah

dibuat. Kemudian tulis jawapan yang baru.

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

.

Marks allocated for each question or part question are shown in the brackets.

Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan dalam

kurungan.

The time suggested to answerSection A is 60 minutes andSection B is 30 minutes.Masa yang dicadangkan untuk menjawab Bahagian A ialah 60 minit dan Bahagian B

ialah 30 minit.

You may use a non-progammable scientific calculator.

Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.

Hand in this question paper at the end of the examination.

Serahkan kertas soalan ini di akhir peperiksaan..


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@2009 Hakcipta MARA SULIT

SULIT 1

55/2

SCIENCE

OGOS, 2009

1 hour

MAKTAB RENDAH SAINS MARAPEPERIKSAAN PERCUBAAN

PENILAIAN MENENGAH RENDAH 2009

ANSWER SCHEMESCIENCE PMR

PAPER 2

Question Mark Scheme Marks

1(a)

(b)

Able to label P, Q and R correctly

Answer

P : Lung //Peparu

Q: Skin //Kulit

R : Kidney //GinjalNote:

Tak boleh salah ejaan

Able to system of the human body with its function correctlyAnswer

Note:

Mark wrong if one system is matched with more than one function orvice versa.

1

1

1

1

1

1

3

3

Total 6


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SULIT 2


2(a)

(b)(i)

(ii)

Able to state how heat is transferred correctly

i) Owl / Burung hantu : Convection // RadiationPerolakan // Radiasi

ii) Boy H / Budak lelaki H: Radiation //Radiasiiii) Iron rod / Rod besi: Conduction // Konduksi

Able to state the method of heat lost correctly

Radiation //radiasi

Able to identify coffee in which mug will cool faster

N // Black ceramic mugMug seramik hitam

Able to give correct reasonBlack mug is a good radiator // give out heat better

Mug hitam adalah pemancar haba yang baik // membebaskan /

menghilangkan haba lebih baik

1

11

1

1

1

3

1

2

Total 6


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SULIT 3


3(a)(i)

(ii)

(iii)

(b)

(c)(i)

(ii)

Able to state the organism correctlySample answers

KNote:

Accept symbol with letter

Able to build a complete food chain correctly

Sample answersJMKL

Note:

mesti terdiri dari 4 organisma

huruf mesti sama dalam soalan

Able to circle the correct animal which may MAnswer

Able to state the source of energy correctly.Answer

Sun // SunlightMatahari // suria // solar

Note:

Also accept light

Able the give reason why plant kept in the dark correctly.Answer

To destarch / remove starch // to prevent photosynthesisMenyahkan / menghilangkan kanji // menghalang fotosintesis

Able to shade the part of the leaf that turns blue black correctlyAnswer

Note:

Must shade both part to get one mark.

1

1

1

1

1

1

1

1

1

1

1

1

6

Note:Part that turn blue black


32/40


SULIT 4


4(a)(i)

(ii)

(b)

(c)(i)

Able to name the part R correctlyAnswer

Uterus (wall) // Lining of the uterus(Dinding) rahim // Pelapik uterus

Note:Also accept womb

Able to label Q where fertilization occur correctlyAnswer

Q

Able to name device K and describe how it work correctly

AnswerName of device : IUCD (Intrauterine contraceptic device) // IUD

Describe how its work: Prevent implantation (of fertilized ovum) /

embryo

Menghalang penempelan (ovum yang telahdisenyawakan) / embrio

Note:

Name Describe Mark

/ / 2 marks

/ X 1 mark

X / O mark

Able to mark wind pollinated flower correctly

1

1

1

1

1

1

1

2

1


33/40


SULIT 5


(ii)Able to explain correctlySample answers

1. pt1. (Characteristic)

- Has a large / long / feathery stigma // Stigma outside the flower

/ with long styleMempunyai stigma besar / panjang / berbulu // Stigma beradadiluar bunga dengan stil yang panjang.

pt2. (function)- Expose to wind // to trap pollen (effectively)

Terdedah kepada angina // untuk memerangkap butir debunga

Or

2. pt1. (Characteristic)- Long filament // Stamen dangle / hang outside the flowerFilamen panjang // Stamen tergantung di luar bunga

pt2. (function)

- Expose pollen grain to windMendedahkan butir debunga ke angin

Note:

Any one correct pair(Charteristic + function)

1

1 2

Total 7


34/40


SULIT 6


5(a)(i)

(ii)

(b)(i)

(ii)

Able to state the source of energy used in M and N correctly.Answer

M : Water / hydroAir

N : Natural gas / petroleumGas asli // petroleum

Reject:

Hydroelectric

Able to state the energy change involved in generator M correctly .

Sample answers- Potential (energy) Kinetic (energy) Electric (energy) //

- Potential (energy)(mechanical)Kinetic (energy)

Electric (energy) //- Potential(Energy)Kinetic(energy)Mechanical(energy)

Electric (energy)(Any one only)

Able to state the difference between in the function of J and K.

Answers

Transformer J will increase the (output) voltage while K will lower the(output) voltageTransformer akan menambahkan voltan (output) sementara K akan

merendahkan voltan (output).

Note:

Should have comparison between J and K

Able to give the advantage of National Grid Network correctlySample answers

- To ensure uninterrupted electrical power supply //Untuk memastikan bekalan kuasa electric tidak terganggu

- To prevent the wastage of electrical energy / lessen the costUntuk mengelakkan pembaziran tenaga electric / menggurangkan kos

- Enable any particular power plant to be shut down for maintenance.Membenarkan mana-mana stesen kuasa ditutup bagi

penyelenggaraan.

(Any one only)

1

1

1

1

1

2

1

1

1


35/40


SULIT 7


5(c) Able to calculate the current flow and give suitable fuse in an

electric rice cooker correctlyAnswer

Current = 3000240

= 12.5 A

Most suitable fuse: 13 A

Reject:

Other answer

1

1 2

Total 7


36/40


SULIT 8


6(a)(i)

(ii)

(iii)

b(i)

(ii)

c(i)

(ii)

Able to draw direction of force correctlySample answers

Able to give name the force for the answer in(a)(i).

AnswersFrictional force

Daya geseran

Able to calculate the work doneAnswer

Work done = (50 X 10) X 2= 1000 Nm

Able to state the mountain bike that is suitable to ride up a hill.Answer

(Bicycle) Q

Able to explain for answer in (b)(i).Answer

pt1. The surface of the tyre has more threads / is rougher

Permukaan tayar yang mempunyai lebih bunga / benang / kasar.

pt2. To increase the frictional force /grip the surface (of the hill) better.Menambahkan daya geseran / cengkaman pada permukaan

(bukit) lebih baik.

Able to state one way to overcome the problem correctly.Sample answer

Apply oil / grease / lubricant to the tyre.Menggunakan minyak / gris / pelincir pada tayar.

Able to state the effect correctly.Sample answer

- Waste/ use a lot energy // membazirkan tenaga

- Produces unnecessary heat // noise //menghasilkan bunyi yang tidak

diperlukan

- The tyre will wear out quickly // hauskan tayar lebih cepat

(Any one)

1

1

1

1

1

1

1

1

1

1

1

1

2

2

total 8


37/40


SULIT 9


7(a)

(b)

Able to state part of the plant at provide additional support.Sample answers

Type of plant Part of additional support

Orchid Roots / clasping rootsAkar / akar cengkam

Cucumber Stem /tendrilsBatang / sulur paut

Rose Stem / thornsBatang / duri

Mangrove Roots / stilt rootsAkar / akar jangkang

Able to state the common characteristics and name the plant

correctly.

Sample answers

Note:

Accept any relevant answer.

1

1

1

1

2

2

4

4

Orchid, cucumber, mangrove tree, rose

Orkid, timun, pokok paya bakau, ros

1. (Additional) supportthrough roots

2. (Additional) supportthrough roots

3. (Additional) support

through stem / tendrils


through stem


not through roots


not through stem / tendrils

1. orchid, mangrove tree

2. orchid, mangrove tree

3. cucumber, rose

1. cucumber, rose

2. cucumber, rose

3.orchid, mangrove tree


38/40


SULIT 10


7(c)(i)

(ii)

Able to state inference correctlySample answers

- The aquatic plant is upright because it is supported by the

buoyancy of water.

Tumbuhan aquatic tegak kerana disokong oleh daya apunganair

- The position of the aquatic plant depends on the presence of

water

Kedudukan tumbuhan aquatic bergantung kepada kehadiran air

[any one]

Able to predict what happen to the plant correctly

Answers- The aquatic plant will float

Tumbuhan aquatic akan terapung

1

1

1

1

Total 10


39/40


SULIT 11


8(a)(i)

(ii)

(b)(i)

(ii)

Able to state one inference correctlySample answers

1. the temperature of water affect / influence the size of sugar cubeSuhu air mempengaruhi saiz gula kiub.

2. the size of sugar kiub depend on the temperature of water/ hotnessSaiz gula kiub dipengaruhi oleh suhu / kepanasan air

[Any one]

Reject:Answer regarding rate of dissolving / time.

Able to state hypothesisSample answer

The higher temperature of water, the smaller the size of sugar cube/vise versa.

Semakin tinggi suhu air, semakin kecil saiz gula kiub / sebaliknya

Able to record correct readingAnswer

48sec

Able to state the manipulated and responding variable correctlyAnswer

Manipulated variable : temperature of water / suhu air

Responding variable : time taken to fine sugar dissolve /masa yangdiambil untuk gula halus larut

1

1

1

11

1

1

1

2


40/40



8(b)(iii)

(c)

(d)

(e)

Able to draw graph of time against temperature correctlyAnswers

Note:

Able to plot all point correctlyAble to joint all the point smoothly

Able to state relationship correctly

AnswersThe higher temperature of water, the shorter time taken for sugar

dissolves. Vice versa.Semakin tinggi suhu air, semakin singkat masa diambil untuk gula

melarut. sebaliknya

Reject:

Temperature affect time taken for sugar dissolve.

Able to predict time taken correctly

Answers

(37+1sec)

Able to define operationally the meaning of rate of dissolving

AnswersThe rate of dissolving is the time taken for sugar to dissolve (at

different temperature).Kadar keterlarutan ialah masa yang diambil untuk gula melarut pada

suhu yang berbeza.

11

1

1

1

2

1

1

1

total 10

X

X

X

X

X

PMR Percubaan 2009 MRSM Science Paper 2

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