kertas 2 trial sn pmr sbp 2007

SULIT 55/2

55/2 © 2007 Hak Cipta Sektor Sekolah Berasrama Penuh SULIT

55/2SainsKertas 2Ogos20071½ jam

PERCUBAAN PENILAIAN MENENGAH RENDAH 2007

SAINS

Kertas 2

Satu jam tiga puluh minit

SEKTOR SEKOLAH BERASRAMA PENUHKEMENTERIAN PELAJARAN MALAYSIA

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

Kertas soalan ini mengandungi 14 halaman bercetak

[Lihat sebelah

1. Tulis nama penuh dan tingkatan anda pada ruang yang disediakan.

2. Kertas soalan ini adalah dalam Bahasa Inggeris.

3. Calon dikehendaki membaca maklumat di halaman 2.

Kod Pemeriksa

Bahagian Soalan MarkahPenuh

MarkahDiperoleh

A

1 5

2 6

3 6

4 6

5 8

6 9

B7 8

8 12

JUMLAH 60

NAMA MURID

TINGKATAN

SULIT 55/2

INFORMATION FOR CANDIDATES

1. This question paper consist of two sections: Section A and Section B.

2. Write your answers in the space provided in the question paper.

3. Show your working, it may help you to get marks.

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

5. The diagrams in the questions provided are not drawn to scale unless stated.

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

7. The time suggested to complete Section A is 60 minutes and Section B is 30 minutes.

8. You may use a non-programmable scientific calculator.

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

55/2 © 2007 Hak Cipta Sektor Sekolah Berasrama Penuh [Lihat sebelah SULIT

2

SULIT 55/2

Section A

[40 marks]

Answer all questions.

1 Diagram 1 shows a longitudinal section of a flower.

DIAGRAM 1

(a) On Diagram 1, label structures Q and R using the following words.

[ 2 marks ]

(b) State one function of structure R in Diagram 1.

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

(c) What will the structure P develop into after fertilization? ………………………………………............……………………………………......…

[ 1 mark ]

(d) Name the process of transferring ripe pollen from the anther of a flower to the stigma of another flower on the different plant of the same species.

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


3

P

R:

Q:

Ovule Ovary Sepal

SULIT 55/2

2 Diagram 2 shows the fractional distillation of petroleum.

DIAGRAM 2

(a) Which of the fraction in Diagram 2 represent

(i) petrol: ……………………………………………….............…....................…

(ii) lubricating oil : ……………………………...………..............……………….[2 marks]

(b) Why does fractional distillation can produce various petroleum components?

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

(c) What are the two characteristics of the fractions as the boiling point increases ?

(i) ……..………………………………………………………………………..

(ii) ……………………………………………………………………………… [2 marks]

(d) State the use of bitumen.

Bitumen: …….……………………………………………......…………………... [1 mark]


4

Furnace

Petroleum

Petroleum gas

Bitumen

SULIT 55/2

3 Diagram 3 shows the changes of state of matter.

DIAGRAM 3

(a)

Name two possible processes of S.

(i) ......................................................................................................................................

(ii) ......................................................................................................................................[2 marks]

(b)

Which process in Diagram 3 involve

(i) the absorption of heat energy?

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

(ii) releasing of heat energy?

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

(c) (i) Name process T.

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

(ii) Give one example of substance that will undergo process T.

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


5

R

U

SR

TSR

VSR

SULIT 55/2

4 Diagram 4 shows a menstrual cycle of a woman.

DIAGRAM 4Based on Diagram 4,

(a)

What is menstruation?

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

(b)

What happen at stage X?

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

(c) How long is this menstrual cycle takes place?

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

(d)

When is fertilization most likely to occur ?

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

(e) The calendar below shows that her last period began on 2 October 2006. Circle the date on the calendar (i) when the ovulation will possibly take place (ii) when her next period will probably begin

[2 marks]


6

SULIT 55/2

5 Diagram 5 shows the titration process.

DIAGRAM 5

(a) What is neutralisation?

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

(b) Write down the general word equation for the neutralisation reaction.

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

(c) Give one example of solution K and L.

Solution K : ............................................................................................................

Solution L : ............................................................................................................[2 marks]

(d) (i) What is the colour of the universal indicator at the end-point of the reaction?

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

(ii) What is the type of solution formed if the volume of solution K is more than solution L in the conical flask?

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

(e) State two uses of neutralisation in our daily life.

(i) ...............................................................................................................................

(ii) ................................................................................................................................[2 marks]


7

Solution L

Solution K

Retort stand

SULIT 55/2

6 Diagram 6.1 shows three cupboards R, S and T with some heavy books stored in it.

Cupboard R

Cupboard S

Cupboard T

DIAGRAM 6.1

(a) On Diagram 6.1, mark “X” at where the centre of gravity of the three cupboards will be.

[3 marks](b) (i) Which cupboard is more stable?

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

(ii) Give one reason for your answer in (b) (i).

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


8

SULIT 55/2

(iii) Using the letter in Diagram 6.1, complete the diagram below to show the stability of the cupboards in descending order.

[1 mark]

(c) Diagram 6.2 shows a giraffe drinking water from a pond.

DIAGRAM 6.2

Based on Diagram 6.2, (i) How the giraffe maximise its stability?

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

(ii) Explain your answer in (c) (i).

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

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


9

SULIT 55/2

Section B

[20 marks]

Answer all questions.

7 Diagram 7 shows four pictures of plants W, X, Y and Z.

W X

Y Z

DIAGRAM 7

(a) Observe the plants in Diagram 7.Based on your observations, state one characteristic of plants W, X, Y and Z.

W : ...............................................................................................................................

X : ................................................................................................................................

Y : ................................................................................................................................

Z : ................................................................................................................................

[4 marks]


10

SULIT 55/2

(b) Classify plants W, X, Y and Z in Diagram 7 into two groups based on their common characteristics.Write the name of the plants belonging to each group.

[4 marks]

[4 marks]


11

W, X, Y and Z

Name of plants

Common characteristics

SULIT 55/2

8 A student carried out an experiment to study the relationship between resistance and current. Diagram 8.1 shows the arrangement of apparatus for the experiment.

DIAGRAM 8.1

The procedure of experiment is as follows:

Step 1: Set up the circuit using the 1 Ω resistor.Step 2: Close the switch and observe the brightness of the bulb and record the ammeter

reading. Step 3: Repeat step 2 with a 2 Ω, 5 Ω and 10 Ω resistor respectively.

(a) State the variables involved in the experiment.

Manipulated variable : ……………………………………………………….

Responding variable : ……………………………………………………….

Fixed variable : ……………………………………………………….

[3 marks]

(b) Diagram 8.2 shows the reading of the ammeter when different resistors are connected to the circuit.


12

1 Ω 2 Ω

SULIT 55/2

Complete Table 8.3 by recording the reading of the ammeter as shown in Diagram 8.2.

Resistance (Ω) 1 2 5 10

Ammeter reading (A)

TABLE 8.3[3 marks]

(c) Based on the readings in Table 8.3, plot a graph of current, I against resistance, R.


13

Cur

rent

(A

)

0.7

0.6

0.8

1.0

0.9

SULIT 55/2

[2 marks]

(d) Based on the graph in question (c),(i) state your inference.

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

[1 mark](ii) State the relationship between resistance and current.

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

(e) Predict the reading of the ammeter when the resistance is 8 Ω.

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

(f) Based on Diagram 8.2, state the operational definition of current.

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

END OF QUESTION PAPER


14

kertas 2 trial sn pmr sbp 2007

Documents