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SEKTOR SEKOLAH BERASRAMA PENUHKEMENTERIAN PELAJARAN MALAYSIA

SET 2

SAINS

Kertas 2Satu jam tiga puluh minit

JANGAN BUKA KERTAS SOALAN INISEHINGGA DIBERITAHU

1. Tuliskannombor kad pengenalandanangka giliran

anda pada ruang yang disediakan .

2. Kertas soalan ini adalah dalam Bahasa Inggeris .

3. Calon dikehendaki membaca maklumat di halaman 2.

Kertas soalan ini mengandungi 15 halaman bercetak

[Lihat sebelah

2006 Hak Cipta Sektor SBP

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SULIT

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Sains

Kertas 2

2007

1 jam

NO. KAD PENGENALAN

ANGKA GILIRAN

Kod Pemeriksa

Bahagian Soalan Markah

Penuh

Markah

Diperolehi

A

1 6

2 5

3 6

4 9

5 8

6 6

7 8

8 12

Jumlah 60

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Figure 1.1 Figure 1.2

a ) Label the following structures in Figure 1.1

Nucleus Cytoplasm Neck

(3 marks)

1 (a)

b ) Based on the structure in Figure 1.2, complete Table 1

Name of structure P Function of Structure P

TABLE 1

(2 marks)

1 (b)

c) State one difference between Figure 1.1 and Figure 1.2.

_____________________________________________________________

(1 mark)

1 (c)

2 Figure 2 shows a stomata on the surface of a leaf.

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FIGURE 2

a ) Label the structures Q and R in Figure 2 using the words given below.

list :

Chloroplast Stoma Guard cell

( 2 marks )

2 ( a )

b) What is the function of P ?

_____________________________________________________________

( 1 mark )

2 (b)

c) Why are the stomata important to plants ?

______________________________________________________________

( 1 mark )

2 (c)

d ) Give one reason why plants need to lose water

___________________________________________________________

( 1 mark )

2( d )

3 Figure 3 shows an experiment to study the reaction between metal and

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oxygen.

FIGURE 3

a ) What is the function of the Potassium permanganate crystals ?____________________________________________________________

( 1mark )

3 ( a )

b ) Between zinc and copper, which metal is more reactive towards oxygen ?____________________________________________________________

( 1 mark )

3 (b)

c ) Name the product formed when zinc reacts with oxygen ?

_____________________________________________________________

( 1 mark )

3 (c)

d ) Write the word equation for the reaction between copper and oxygen.

+( 1 mark )

3 (d)

e ) Give one reason why metals such as gold and silver do not react withoxygen.

____________________________________________________

____________________________________________________

( 1 mark )

3 (e)

4. Figure 4 shows an experiment related to heat flow. Equal volumes of hot

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water are poured into each flask. The temperature of water is taken every 5minutes for 20 minutes.

FIGURE 4

Table 2 shows the results obtained.

Time ( minutes ) Temperature of water in flasks ( C )

P Q R

0 90 90 90

5 84 86 87

10 79 83 85

15 75 80 83

20 71 78 82

TABLE 2

( a ) What is the aim of this experiment ?

____________________________________________________________

( 1 mark )

4 (a)

( b ) State the hypothesis for this experiment.

____________________________________________________________

( 1 mark )

4 (b)

( c ) After 20 minutes, which flask shows the lowest heat loss ?

____________________________________________________________

( 1 mark )

4 (c)

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( d ) Predict what will happen to the temperature if the paper is removed fromflask P after 20 minutes.

____________________________________________________________

( 1 mark )

4(d)

( e ) Based on your answer in ( c ), which material is the best heat insulator ?____________________________________________________________

( 1 mark )

4 (e)

( f ) State how heat is lost from the round-bottomed flasks. ?

_____________________________________________________________( 1 mark )

4 (f)

( g ) Arrange the materials according to their ability to insulate heat in

ascending order.____________________________________________________________

( 1 mark )

4 (g)

(h) ( i ) Youre your opinion, which material is suitable foe making winterjackets?

____________________________________________________________( 1 mark )

( ii ) Give a reason for your answer in ( f ) ( i ).

______________________________________________________________( 1 mark )

(h)(i)

4(h)(ii)

5. Figure 5.1. shows the fertilisation process in plant

FIGURE 5.1

a ) Name the structure labelled Q in Figure 5.1 and state its function.

Structure Function

( 2 marks )

5(a)

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b ) Show on Figure 5.1 the structure Y, where the male gamete develops?

_____________________________________________________________

( 1 mark )

5 (b)

c ) Mark, using arrows, to show the movement of male gametes in theprocess of fertilisation in Figure 5.1.

( 1 mark )

5 (c)

d) What does a pollen grain form immediately after it lands on the stigma?

___________________________________________________________

( 1 mark )

5 (d)

e) State the development of the following parts after fertilisation.

( i ) Ovule : _______________________________________

( ii ) Ovary : _______________________________________( 2 marks )

5 (e)(i)

5(e)(ii)

f) What happens to the stamen after the fruits develops ?

___________________________________________________________

( 1 mark )

5 (f )

6. Figure 6 shows an experiment to study neutralisation.

FIGURE 6

(a) What is neutralisation ?____________________________________________________________

( 1 mark )

6(a)

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(b) ( i ) State the purpose of the universal indicator.

________________________________________________________

( 1 mark )

( ii ) What is the pH of the solution when neutralisation takes placecompletely.

________________________________________________________

( 1 mark )

( iii ) What is the taste of the neutral solution in (b) ( ii ) ?________________________________________________________

( 1 mark )

6(b)(i)

6(b)(ii)

6(b)(iii)

c ) Write the word equation for the reaction between copper and oxygen.

+ +

( 1 mark )

3 (c)

( d ) Give one example of neutralisation in our daily life.

____________________________________________________________

( 1 mark )

6(d)

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SodiumHydroxide

Hydrochloricacid

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Section B(20 marks)

Answerall questions.The time suggested to complete this section is 30 minutes.

7. Figure 7 shows a picture of animals R, S, T U and V.

FIGURE 7

Observe the animals in Figure 7 carefully.

a ) Based on your observations in Figure 7, state the characteristics for anyfouranimals R, S. T, U and V.

R. ______________________________________________________

S. ______________________________________________________

T. ______________________________________________________

U. ______________________________________________________

V. ______________________________________________________

( 4 marks)

7(a)

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b) Classify animals R, S. T, U and V into groups based on their commoncharacteristics. Name the animal belonging to each group.

CommonCharacteristics

Names ofanimals

7(b)

( 4 marks )

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R, S , T, U and V

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8. Figure 8 shows an electrical circuit to study the relationship between voltage,current and resistance.

FIGURE 8This experiment is repeated using two, three and four dry cells connected inseries. The ammeter and voltmeter readings are recorded. The result areshown in Table 3.

Number of Dry Cells Current ( A ) Voltage ( V )

0 0 0

1 0.1 1.5

2 0.2 3.0

3 0.3 4.5

4 0.4 X

TABLE 3

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( a ) Record the ammeter reading in the space provided.

Ammeter reading = ___________________ A( 1 mark )

8(a)

( b ) State the manipulated and responding variables in the experiment.

8(b)

Manipulated variable

Responding variable

Controlled variableLength of wire used in the circuitResistance/rheostat settingType of dry cellsType of wire

( 2 marks )

( c ) Based on table 3, find the value of X.

____________________________________________________________

( 1 mark )

8(c)

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( d ) Based on the information in Table 3, plot a graph to show therelationship between voltage and current.

( 2 marks )

8(d)

(e) ( i ) Based on the graph, what is the relationship between voltage andcurrent?

__________________________________________________________

( 1 mark )

( ii ) Write a relationship between voltage, current and resistanceaccording to Ohms Law.

________________________________________________________( 1 mark )

( iii ) Predict what will happened to the ammeter reading if the rheostat isreplaced with a short length of copper wire ?

___________________________________________________________( 1 mark )

8(e)(i)

8(e)(ii)

8(e)(iii)

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( f ) Draw a parallel circuit in symbols using the following components.

Connecting wire Switch Two dry cells One voltmeter Two bulbs

( 2 marks )

8(f)

( g ) The electrical wiring system in houses is in parallel circuits. Give oneadvantage of this system.

.____________________________________________________________

____________________________________________________________

( 1 mark )

8(g)

The End of Question Paper

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