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JABATAN PELAJARAN KEDAH DARUL AMAN LATIH TUBI SAINS PMR KERTAS 2 ( SET 1 ) SEKTOR PENGURUSAN AKADEMIK
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Page 1: Latih Tubi Set 1 Kertas2 Sains Pmr Kedah

JABATAN PELAJARAN KEDAH DARUL AMAN

LATIH TUBI SAINS PMR KERTAS 2

( SET 1 )

SEKTOR PENGURUSAN AKADEMIK

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Section A

[ 40 marks ] Answer all questions.

1. Diagram 1 shows the different parts of a flower. Rajah 1 menunjukkan bahagian –bahagian berbeza bagi sekuntum bunga..

Diagram 1 / Rajah 1 ( a ) Based on Diagram 1 , name the parts labelled P , Q and R with the following words.

Berdasarkan Rajah 1 , namakan bahagian berlabel P, Q dan R dengan perkataan berikut.

[ 3 marks ]

P :

Q :

R :

Stigma Anther Ovary Stigma Anter Ovari

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( b ) Draw lines to match the structures with their functions.

Lukis garisan untuk memadankan struktur dengan fungsinya. Structure Function

Struktur Fungsi

[ 2 marks ]

( c ) Diagram 1.2 shows a flower. Rajah 1.2 menunjukkan sekuntum bunga.

Diagram 1.2 Rajah 1.2

Based on Diagram 1.2 , what will happen to part P after fertilisation ?

Tick ( X) the correct answer Berdasarkan Rajah 1.2 , apakah yang akan berlaku pada bahagian P selepas persenyawaan . Tandakan ( X ) bagi jawapan yang betul..

Seed Biji benih

Fruit Buah

Shoot Pucuk

[1 mark ]

P

P

Q

R

Produces ovules Menghasilkan ovul.

Produces pollen grain Menghasilkan butir debunga.

Enables pollen grains to stick on it. Membolehkan butir debunga melekat di atasnya.

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2 Diagram 2.1 shows the arrangement of the particles of three substances J , K and L

Rajah 2.1 menunjukkan susunan zarah – zarah bagi tiga bahan J , K dan L.

Diagram 2.1 Rajah 2.1

( a ) On Diagram 2.1 , label J , K and L by using the following words.

Pada Rajah 2.1 , label J , K dan L menggunakan perkataan – perkataan berikut.

[ 3 marks ] ( b ) Give one example for :

Berikan satu contoh bagi :

J : ………………………………………………………….

L : ………………………………………………………..

[ 2 marks ]

J : K : L :

Element Mixture Compound

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( c ) Substances J and L can be separated through the certain method. Based on Diagram 2.2 , choose the correct method to separate substance J. Tick ( √ ) in the box provided.

Bahan J dan L boleh dipisahkan melalui kaedah tertentu. Berdasarkan Rajah 2.2 , pilih kaedah yang betul untuk memisahkan bahan J. Tandakan ( √ ) pada kotak yang disediakan.

[ 1 mark ]

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3. Diagram 3.1 shows the interaction between living organisms

Rajah 3.1 menunjukkan interaksi di antara organisma –organisma hidup.

Diagram 3.1 / Rajah 3.1 ( a ) On Diagram 3 .1, name the of interactions labelled M, N and O.

Pada Rajah 3.1 , namakan interaksi berlabel M , N dan O. [ 3 marks ] ( b ) Diagram 3.2 below shows the interaction of prey – predator is used as one of the

method to control the pest. Circle the name of the method that used this interaction. Rajah 3.2 di bawah menunjukkan interaksi mangsa –pemangsa yang digunakan sebagai salah satu kaedah untuk mengawal makhluk perosak. Bulatkan kaedah yang menggunakan interaksi berikut.

Diagram 3.2

M : N : O :

Organic control Biological control Pesticide control Kawalan organik Kawalan biologi Kawalan racun makhluk perosak

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[ 1 mark ] ( c ) ( i ) Which of the interactions stated in 3.1 ( a ) can be used as biological control in a

farm.? Antara interaksi –interaksi di 3.1 ( a ) , yang manakah boleh digunakan dalam kawalan biologi di ladang ?

………………………………………………………………………………… [ 1 mark ] ( ii ) Explain how the interaction state in 3 ( c ) ( i ) , help to eliminate pest in a

farm. Terangkan bagaimana interaksi di 3 ( c ) membantu untuk menghapuskan makhluk perosak di ladang .

…………………………………………………………………………………. ………………………………………………………………………………… …………………………………………………………………………………

[ 1 mark ] ( d ) Give one advantage of the method of the interaction in ( b ).

Berikan satu kelebihan menggunakan kaedah interaksi di ( b ).

……………………………………………………………………………………… ……………………………………………………………………………………… ………………………………………………………………………………………

[ 1 mark ]

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4. Diagram 4 shows a man pushing a box through a distance of 10 m. The mass of the box is

500 N. Rajah 4 menunjukkan seorang lelaki menolak sebuah kotak sejauh 10 m. Jisim kotak tersebut adalah 500N.

Diagram 4 Rajah 4

( a ) Explain why the man is considered doing work . Jelaskan mengapa lelaki ini dianggap telah melakukan kerja.

................................................................................................................................... [ 1 mark ] ( b ) ( i ) Name the type of force which is produced by the moving box and the floor.

Namakan jenis daya yang terhasil daripada pergerakan kotak dengan lantai.

………………………………………………………………………………. [ 1 mark ] ( ii ) Suggest one way how the man can drag the box easily.

Berikan satu cara bagaimana lelaki tersebut boleh menarik kotak dengan mudah.

……………………………………………………………………………… [ 1 mark ] ( iii ) Give one advantage of the force produced in Diagram 4 in everyday life.

Berikan satu kelebihan daya yang terhasil pada Rajah 4 dalam kehidupan seharian.

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

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( c ) Calculate the work done by the man.

Use the following formula : Hitung kerja yang dilakukan oleh lelaki tersebut. Gunakan rumus berikut :

[ 2 marks ] ( d ) If the time taken for the man to drag the box is 50 seconds. Calculate the power

generated by the man. Use the following formula.

Jika masa yang diambil bagi lelaki tersebut untuk menarik kotak adalah 50 saat. Hitung kuasa yang terhasil. Guna rumus yang berikut :

[ 2 marks ]

Work = Force X Distance Kerja = Daya X Jarak

Power ( Kuasa ) = Work done ( Kerja ) Time taken ( Masa )

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5 Diagram 5.1 and Diagram 5.2 shows two parts of an experiment to study the components of

a mineral P. Rajah 5.1 dan Rajah 5.2 menunjukkan dua bahagian dalm satu eksperimen untuk mengkaji komponen mineral P.

Diagram 5.1 Diagram 5.2

( a ) ( i ) Why the lime water in Diagram 5.2 become cloudy ?

Mengapa air kapur di Rajah 5.2 menjadi keruh ?

……………………………………………………………………………….. [ 1 mark ] ( ii ) Give one reason for the answer in 5 ( a ) ( i ) .

Beri satu sebab bagi jawapan di 5 ( a ) ( i ).

…………………………………………………………………………………..

…………………………………………………………………………………. [ 1 mark ] ( b ) Why the colour of acidified potassium manganate ( VII ) solution in Diagram 5.1

does not change ? Mengapa warna larutan Kalium manganat ( VII ) di Rajah 5.1 tidak berubah ?

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

Mineral P

Mineral P

The colour of acidified potassium manganate ( VII ) solution remain purple.

Lime water became cloudy [Air kapur menjadi keruh ]

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( c ) If it is given that mineral P contains zinc, tick ( √ ) in the correct box to identify the

mineral. Jika diberikan bahawa galian P mengandungi zink, tandakan ( √ ) dalam petak

yang betul untuk mengenalpasti galian tersebut.

[ 1 mark ] ( d ) Complete the word equation for this reaction based on answer in 5 ( c )

Lengkapkan persamaan perkataan bagi tindak balas ini berdasarkan jawapan di 5 ( c).

............................................................................................................................... [ 1 mark ] ( e ) What conclusion can be made from this study ?

Apakah kesimpulan yang boleh dilihat daripada kajian ini ? ……………………………………………………………………………………

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

Zinc sulphide

Zink sulfida

Zinc carbonate Zink karbonat Zinc oxide Zink oksida

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6 Diagram 6.1 shows distribution system of electrical supply. P , Q , R and S are transformers.

Rajah 6.1 menunjukkan sistem pengagihan bekalan elektrik. P , Q, R dan S adalah transformer.

Diagram 6.1 Rajah 6.1 ( a ) ( i ) Based on Diagram 6.1 , name one step-down transformers.

Berdasarkan Rajah 6.1 , namakan satu transformer injak-turun.

................................................................................................................................... [ 1 mark ] ( ii ) Give one reason for the answer in 6 ( a ) ( i ).

Berikan satu sebab bagi jawapan di 6 ( a ) ( i ).

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

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

Heavy industry

Light industry

City Houses

P Q R S

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( b ) Based on Diagram 6.1 , draw the number of turns for primary coil and the number of

turns for secondary coil to show a step-up transformer on Diagram 6.2 Berdasarkan Rajah 6.1 ,lukiskan bilangan lilitan gegelung primer dan bilangan lilitan gegelung sekunder untuk menunjukkan transformer injak naik di Rajah 6.2

Diagram 6.2 Rajah 6.2 [ 1 mark ] ( c ) Electrical wiring system is important for safety. In Diagram 6.3, arrange the

component of wiring system at home in correct sequence . Sistem pendawaian elektrik adalah amat penting untuk keselamatan. Pada Rajah 6.3 , susun komponen-komponen pendawaian elektrik di rumah mengikut turutan yang betul.

Diagram 6.3 Rajah 6.3

[ 1 marke]

Main fuse Fius utama

Circuit breaker Pemutus litar

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( d ) Diagram 6.4 shows two electrical appliances,M and N.

Rajah 6.4 menunjukkan dua peralatan elektrik , M dan N.

M N Diagram 6.4

Rajah 6.4 ( i ) Based on Diagram 6.4, explain why the appliance M uses a 3-pin plug while appliance

N uses 2-pin plug? Berdasarkan Rajah 6.4 , terangkan mengapa peralatan M menggunakan plug 3 –pin manakala peralatan N menggunakan plug 2-pin?

…………………………………………………………………………………………

………………………………………………………………………………………... [ 2 marks ] ( e ) Diagram 6.5 shows an refrigerator.

Rajah 6.5 menunjukkan sebuah peti sejuk.

Diagram 6.5 / Rajah 6.5

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( i ) Calculate the current flowing through a refrigerator of 2640 W,240V using the

formulae given. Kira arus yang mengalir melalui peti sejuk yang mempunyai 2640, 240V dengan menggunakan formula yang diberi .

[ 1 mark ] ( ii ) Suggest one suitable rate of fuse to be used for the refrigerator.

Cadangkan satu kadar yang sesuai untuk digunakan oleh peti sejuk.

………………………………………………………………………………………… [ 1 mark ]

P = VI

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Section B

( 20 marks )

7. Diagram 7.1 shows a picture of results for tests done on four food samples J, K , L and M.

Rajah 7.1 menunjukkan gambar keputusan ujian yang dibuat ke atas empat sample makanan J , K , L dan M.

Diagram 7.1 / Rajah 7.1

Mendakan merah bata terbentuk

Mendakan merah bata terbentuk

Tompok lutcahaya terbentuk Biru gelap

terbentuk

Food M Makanan M

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( a ) Based on your observation in Diagram 7.1, Berdasarkan pemerhatian anda di Rajah 7.1,

State one characteristic that can be observed from any food sample J , K , L and M.

Nyatakan satu ciri yang boleh diperhatikan daripada mana-mana sampel makanan J , K , L dan M.

Food Sample Sampel makanan

Characteristic Ciri

J

K

L

M

[ 4 marks ] ( b ) Classify sample food J , K , L and M into two groups based on their common characteristics.

Kelaskan sampel makanan J , K , L dan M kepada dua kumpulan berdasarkan ciri sepunya.

[ 4 marks ]

Common characteristics Ciri sepunya

Letters of sample food Huruf Sampel Makanan

J,K,L,M,

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( c ) Diagram 7.2 shows two sample of food, rice and potato. Rajah 7.2 menunjukkan dua sampel makanan , nasi dan ubi kentang.

P

Q Diagram 7.2 ( i ) State one inference based on the observation in the test tube R.

Nyatakan satu inferens berdasarkan pemerhatian pada tabung uji R.

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

[ 1 mark ]

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

( ii ) Predict the observation in the test tube Q.

Ramalkan pemerhatian pada tabung uji Q.

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

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

[ 1 mark ]

Nasi Biru gelap terbentuk

Ubi kentang

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8 (a ) Diagram 8.1 shows two similar toy cars and two identical wooden blocks, P and Q with different heights. Rajah 8.1 menunjukkan dua kereta mainan yang sama dan dua blok kayu yang serupa, P dan Q ,dengan ketinggian yang berbeza.

Diagram 8.1 / Rajah 8.1 When the toy cars are released and move towards the wooden blocks, blocks P topples first

before block Q. Apabila kedua-dua kereta mainan dilepaskan dan menghala ke arah blok kayu, blok P terguling dahulu sebelum blok Q.

( i ) Based on the observation , compare the stability of block Q to the stability of block P.

Berdasarkan pemerhatian , bandingkan kestabilan blok Q dengan kestabilan blok N.

…………………………………………………………………………………………

………………………………………………………………………………………… [ 1 mark ] ( ii ) State one inference based on the observation.

Nyatakan satu inferens berdasarkan pemerhatian tersebut.

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

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

Block Q

Block P

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( b ) Diagram 8.2 shows the set-up of apparatus to study the relationship between the height of an object and the stability of the object. The time taken for the objects to topple is shown by the stopwatch in Diagram 8.3 Rajah 8.2 menunjukkan susunan radas yang digunakan untuk mengkaji hubungan di antara tinggi suatu objek dengan kestabilan objek tersebut. Masa yang diambil oleh suatu objek untuk terguling ditunjukkan oleh jam randik pada Rajah 8.3

Diagram 8.2

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( c ) Record the time taken for models K, L and M to topples in the spaces provided. Catat bacaan masa yang di ambil oleh model K , L dan M untuk terguling pada ruang yang disediakan.

Models Model

Stopwatch reading / s Bacaan jam randik / s

Diagram 8.3 / Rajah 8.3 [ 2 marks ]

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( d ) Based on the readings in Diagram 8.3 , draw bar chart to show the time taken for the models to topple. Berdasarkan bacaan di Rajah 8.3 , lukis carta bar untuk menunjukkan masa yang di ambil oleh model untuk terguling.

[ 2 marks ]

Time taken for the model to topple (s )

Model K L M Model

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( e ) Based on the bar chart drawn in 8 ( d ) , state the relationship between the height of an object and the stability of the object. Berdasarkan carta bar yang dilukis di 8 ( d ) ,nyatakan hubungan di antara tinggi suatu objek dengan kestabilan objek.

……………………………………………………………………………………..

……………………………………………………………………………………. [ 1 mark ] ( f ) State the manipulated variable involved in this experiment.

Nyatakan pembolehubah yang dimanipulasi di dalam eksperimen ini.

……………………………………………………………………………………… [ 1 mark ] ( g ) State what is the reading of the stopwatch if the height of object L is increased to 50

cm . Nyatakan apakah bacaan jam randik sekiranya tinggi object L bertambah kepada 50 cm.

…………………………………………………………………………………….. [ 1 mark ] ( h ) A great force is needed to topple a certain object.

What conclusion can be made about the stability of the object ? Satu daya yang besar diperlukan untuk menggulingkan satu objek tertentu. Apakah kesimpulan yang dapat dibuat tentang kestabilan objek tersebut?

………………………………………………………………………………………….

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