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4531/3FIZIK

Kertas 3Peperiksaan AkhirTahun 2009Ting 4 SMK BUD41 jam

Nama : ................................................................

Ting 4 ..........................

SMK Bandar Utama Damansara 4Peperiksaan Akhir Tahun 2009

Tingkatan 4

Bahagia

n

Soalan Markah

Penuh

Markah

diperoleh

A

120

26

B3

14

Jumlah 40

FIZIKKertas 3

( 1 jam 30 minit )

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

1. Write your name and form in the spaces provided

2. You can answer the whole question or part of it in

Bahasa Melayu or in English3. The question paper consists of two sections, A and

B. Answer ALL questions

4. Write your answers to questions 1 and 2 in the

spaces provided in the test paper. Answers written

anywhere else will NOT be marked.

5. Answer question on testpad paper. You can use

equations, diagrams, tables, graphs and other

suitable means to clarify your answers.

6. Show all calculations

7. Diagrams are not drawn to scale unless otherwise

stated.

8. Marks allocated for each question or its parts are

indicated in brackets9. You can use a non programmable scientific

calculator

10. Submit your answer papers at the end of the

examination

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Kertas ini mengandungi 5 halaman bercetak

Bahagian AJawab SEMUA soalan

Masa yang dicadangkan untuk menjawab bahagian ini ialah 60 minit

1 A student is investigating the rate of cooling of hot water.

( a ) He pours hot water into a beaker until it is about two-thirds full. He measures and records the temperature

, o C of the hot water and at the same time starts a stopwatch.

As the water cools, he records the temperature every 30 s for a total of five minutes. The sections of thethermometer showing the readings are shown below :

2

2

Disediakan oleh Disemak oleh Tandatangan Ibubapa

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

Long FS Pn Leow HS

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(b) Name the variables in the experiment ( 2 m )

manipulated variable : .

responding variable : ..

( c ) Record and tabulate the results of the experiment as shown. ( 4 m )

time, t / s 0 30 60 90 120 150section of

thermomete

r

time , t/ s 180 210 240 270 300 330section of

thermomete

r

3

3

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( d ) ( i ) Plot a suitable graph on the grid provided below to represent the results of the experiment. ( 3 m )

( ii ) Determine the gradient of the graph at t = 190 s. Show clearly on the graph how this gradient isfound. ( 3 m )

( iii ) What does the gradient calculated in ( d ) ( ii ) tell us about the relationship between and t ?

( 1 m )

.

.

Grid for graph ( d ) ( i ) Title :

4

4

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(e

)

The rate of cooling of the hot water at any time depends on the difference between the temperature of the

water at that time and room temperature.

( i ) State whether your graphsupports this statement and explain your answer ( 3 m )

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

( ii ) Suggest three variables that you would try to keep constant if this statement were to be

investigated further. ( 3 m )

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

.

( e ) Suggest one addition you could make to the apparatus provided in order to reduce the rate of

evaporation of the water in the beaker. ( 1 m )

.

5

5

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2 Another student is investigating the refraction of light through

a transparent block of glass.

The figure shows the apparatus used.

( a ) She looks down through the transparent

block at the image of a line drawn on the

sheet of paper. She carefully places the point

of an optical pin exactly in line with the image.

On the figure

( i ) measure the vertical distance x

between the paper and the pin. ( 1 m )

x = .....................................................

( ii ) measure the height hof the transparent block. ( 1 m )

h = .....................................................

( b ) Calculate the refractive indexnof the material

of the block using the equation ( 2 m )

Bahagian BJawab SEMUA soalan

Masa yang dicadangkan untuk menjawab bahagian ini ialah 30 minit

3 Insulation can slow down heat loss

Referring to the statement above,

( a ) make a suitable inference ( 1 m )

(b ) state a suitable hypothesis that can be investigated ( 1 m )

( c ) outline an experiment to investigate this hypothesis using two copper cans, a piece of

synthetic fleece ( polyester ) material and other pieces of apparatus commonly found in a school

laboratory. Your description should include the following

i aim of experiment

ii the variables involved in the experiment

iii a list of the apparatus, and materials used

iv the arrangement of the apparatus

v procedure of the experiment including the method of controlling the manipulated variable and of

measuring the responding variable

vi how you would tabulate the data

vii how you would analyse the data ( 12 m )

End of Test

6

6

eye

optical pin

transparent

glass block

sheet of a er