Fizik Sbp Akhir Tahun f4 2008

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4531/1 Fizik Kertas 1 OKTOBER 2008 1 ¼ jam SEKTOR SEKOLAH BERASRAMA PENUH BAHAGIAN SEKOLAH KEMENTERIAN PELAJARAN MALAYSIA

PEPERIKSAAN AKHIR TAHUN (DIAGNOSTIK) TINGKATAN 4 2008

FIZIK KERTAS 1 Satu jam lima belas minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU 1.

Kertas soalan ini mengandungi 50 soalan.

2.

Jawab semua soalan.

3.

Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan.

4.

Bagi setiap soalan hitamkan satu ruangan sahaja.

5.

Sekiranya anda hendak menukarkan jawapan, padamkan tanda yang telah dibuat.

6.

Kemudian hitamkan jawapan yang baru.

7.

Satu senarai rumus disediakan di halaman 2

8.

Penggunaan kalkulator saintifik yang tidak boleh diprogramkan adalah dibenarkan

Kertas ini mengandungi 22 halaman bercetak

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The following information may be useful. The symbols have their usual meaning.

1.

v2 = u2 + 2as

2.

a=

3.

vu t 1 s = ut + at2 2

4.

Momentum = mv

5.

F = ma

6.

Kinetic Energy = ½ mv2

7.

Gravitational Potential Energy = mgh

8.

Elastic Potential Energy =

9.

F = kx

10.

ρ=

11.

Pressure in liquid, P = hg

12.

Pressure, P=

13.

Heat, Q = mc

14.

Heat, Q = mℓ

15.

P1V1 = P2V2

16.

V1 V2  T1 T2

17.

P1 P2  T1 T2

18.

PV = constant T

19.

g = 10 ms-2

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1 Fx 2

m V

F A

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Each question is followed by either three or four options. Choose the best option for each question, then blacken the correct space on the answer sheet.

1

Which of the following is not a SI unit? A kg B s C A o D C

2

Which group contains only scalar quantities? A

C

3

B

Distance Work Mass Time

D

Force Momentum Velocity Weight

Speed Weight Time Volume

Displacement Area Density Energy

Diagram shows a hole at the wooden block.

Wooden block

Hole

Which measuring tool is the most suitable to measure the diameter and the depth of the hole? A B C D

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Ruler Vernier calipers Ruler and Vernier calipers Micrometer screw gauge and Ruler

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Diagram (a) shows the scale of a micrometer screw gauge when the anvil and spindle are closed. Diagram (b) shows the scale of the micrometer screw gauge when it is measuring the thickness of a piece of glass.

DIAGRAM (a)

DIAGRAM (b)

What is the zero error of the micrometer screw gauge and the actual thickness of the glass? Zero error Actual thickness A –0.02 mm 12.84 mm B –0.02 mm 12.86 mm C +0.02 mm 12.84 mm D +0.02 mm 12.86 mm 5

Diagram shows a track for 200m event. The athlete took 25 s to finish the race. Start A

150 m B

200 m

Finish What is the velocity of the athlete ?

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A

350 25

B

200 25

C

150 25

D

25 150

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6.

A car starts from rest and goes down a slope with a constant acceleration of 5 ms-2. After 5 s the car reaches the bottom of the hill. What is its speed at the bottom of the hill? A B C D

7.

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1.0 ms-1 12.5 ms-1 25.0 ms-1 50.0 ms-1

Which displacement-time graph represents the motion of an object moving at constant velocity ? s/m

s/m

t/s A

s/m

t/s B

s/m

t/s

t/s D C

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8.

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The graph shows the speed of the car at position P,Q,R,S and T. v/ ms-1 S

T

R

Q

t/s

P

Which position shows the acceleration of the car is equal to zero? A B C D

9

PQ PR QS ST

The diagram shows a student is riding a skateboard and runs over a stone, he is thrown off from the skateboard.

This is due to A inertia B decrease in velocity C change in acceleration D conservation of momentum

10

Which is not conserved when inelastic collision occurs? A B C D

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Total energy Total momentum Total kinetic energy Total mass

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Which of the following has the largest momentum?

A

Mass = 90 kg Speed = 20 m s–1 B

Mass = 360 kg Speed = 40 m s–1

C

Mass = 1000 kg Speed = 38 m s–1 D

Mass = 12000 kg Mass = 12000 kg Speed = 3 m s–1

12

Which quantity does not change when a body moves at constant acceleration. A B C D

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Time Force Velocity Displacement

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A person just supports a mass of 20 kg suspended from a rope.

2O kg

What is the resultant force acting on the mass? A B C D 14

0N 10 N 20 N 200 N

A softball player moves his hand backwards while catching a fast moving ball.

The movement of his hand is to A B C D 15

increase the time impact. increase the impulsive force. decrease the energy of the ball increase the impulse of the ball

Which of the following is not a safety feature in the design of a vehicle? A B C D

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Headrest Soft cushion Safety seat belts. Shatter-proof wind screen

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A golfer hits a golf ball of mass 0.05 kg with a velocity of 20 ms-1. 0.05kg

20ms-1

If the time of contact is 0.005 s. What is the impulsive force ? A B C D 17

0.1N 2.0 N 20.0 N 200.0 N

The diagram shows a coin and a marble being released at the same time in a vacuum cylinder.

Coin

Marble

Vacuum cylinder

Base Which observation is correct? A B C D 18

The coin reaches the base earlier than the marble The marble reaches the base earlier than the coin Both reaches the base at the same time Both float in the cylinder.

An aeroplane flying at a particular height is said to be in equilibrium state when moving with A B C D

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constant velocity constant acceleration increasing velocity increasing acceleration

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Diagram shows two cables, JK and LK are used to hold a flagpole upright. Each cable has a tension 1 000 N and makes and angle 30o with the surface of the ground.

1000 N

1000 N

What is the magnitude of the resultant force acting on the ground? A B C D 20

Which of the following is true regarding the Principle of Conservation of Energy? A B C D

21

250 N 500 N 866 N 1000 N

Energy can be created Energy can be destroyed Total energy in the system is constant Energy cannot be transformed from one type to another

A man of weight 600 N walking up a staircase consisting of 20 steps. Each step is 15 cm height.

How much gravitational potential energy does he gain? A B C D

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1800 J 9000 J 12000 J 180000 J

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22.

A crane lifted a load of 500 kg to a height of 50 m. If the energy input is 5 x 10 5 J, calculate the efficiency of the crane. A. B. C. D.

23.

5 % 25 % 50 % 75 %

Spring constant is higher if A B C D

24.

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length of spring increase diameter of spring coil increase diameter of spring wire increase arrangement of springs in series

Diagram shows a spring of length 20 cm is compressed to a length of 10 cm when a load of 12 kg is put on top of it. When the load M is put on top of it, the spring compressed to a length of 15 cm . M

20 cm

Load

12 kg 15 cm 10 cm

What is the value of M ? A

B C D

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4 kg 6 kg 8 kg 9 kg

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A farmer has two carts. The carts have the same weight, but one has four narrow wheels and the other has four wide wheels.

On rainy weather, which cart will sinks less into the soft ground, and explain why Cart wheels

26

Explanation

A

Narrow

greater pressure on the ground

B

Narrow

less pressure on the ground

C

Wide

greater pressure on the ground

D

Wide

less pressure on the ground

The diagram shows a small aquatic bird walking across lily pads with-out sinking into the water.

Which of the following explains the above situation? A B C D

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The bird’s weight is small. Its weight is spread out over a large area by its long toes. Its weight is spread out over a large area of lily pads. The density of the bird is less than the density of water.

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If each lorry has the same weight, which lorry exerts the least pressure? A

B

C

D

28

Diagram shows two different liquids X and Y. At the same depth, liquid X spurts out further than liquid Y.

hole

hole Liquid Y

Liquid X

Which statement is true? A B C D

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Density of liquid Y is lower than liquid X. Density of liquid Y is greater than liquid X. Pressure of liquid Y is higher than liquid X. Pressure of liquid Y is equal to pressure of liquid X.

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Diagram shows a dam retaining water in a reservoir. Water

Dam

The wall of the dam is thicker at the base because the pressure in the water is A B C D 30

Which does not affect the pressure of liquid? A B C D

31

the same at all water levels. directly proportional to the area. directly proportional to the depth of the water. inversely proportional to the denser of the water.

Density of the liquid Surface area of the liquid Depth of the liquid Strength of the gravitational field

Diagram shows a cylinder containing water.

2.0 m

Water P h

If the pressure at point P is 12 000 N m-2, the height of h is [the density of the water = 1000 kg m-3] A B C D

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0.8 m 1.0 m 1.2 m 2.0 m

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Diagram shows a little girl is drinking with a straw.

The water can flow into the straw because A B C D 33.

there is no atmospheric pressure on the straw . the atmospheric pressure is equal to the pressure inside the straw. the atmospheric pressure is less than the pressure inside the straw. the atmospheric pressure is more than the pressure inside the straw. Diagram shows a manometer filled with water. One arm of the manometer is connected to a gas supply. The difference height of the water level between each arm is h cm.

Height h can be increased by A B C D

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using mercury liquid sloping the manometer tube using tube with bigger diameter using oil which has a lower density than water

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34 piston is pushed

When the piston is pushed forward as shown in Diagram, water are spurted out in all directions with equal speed. This is because A B C D

liquid is easy to expand the water pressure increase thrust force acted on the water water pressure is transmitted uniformly

35

Which device is an application of Pascal’s principle?

36

The input piston of a hydraulic press is pushed down 2.0 cm from the original position. If the cross sectional area of the input piston is 5.0 cm2 and of the output piston is 50 cm2, how much will the load raised up? A B C D

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0.2 cm 1.0 cm 1.5 cm 1.8 cm

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Diagram shows three blocks A, B, and C are floating in water.

Blocks A and B have the same mass and volume. Block C has the same volume, but submerged to a greater depth than the other two blocks. Which statement is not true? A B C D

38

The density of block A is less than the density of block C. The weight of block C is greater than the weight of block A The buoyant force acting on block A is equal to that acting on block B. The volume of water displaced by block A is greater than that displaced by block B.

Diagram shows a ship with a total mass of 1200 kg . The volume of submerged portion of the ship is 2 m3.

What is the weight of the water displaced? A B C D

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2400 N 12000 N 20000 N 24000 N

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Diagram shows two ping pong balls hung by a rope.

air jet An air jet is blown between the two ping pong balls. The two ping pong balls will A B C D

40

move closer to each other move further from each other remain stationary move upwards

Diagram shows the flow of air in an underground tunnel. Fast air Y

Slow air X

The flow of air through the tunnel from X to Y can be explained using A B C D

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Pascal’s principle Bernoulli’s principle Archimedes’ principle Principle of equilibrium

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Diagram shows a sailboat.

The sailboat is able to accelerate forward because A B C D

42 .

the wind flow at region A is faster than region B the wind flow at region A is slower than region B the wind flow at region A is equal to region B the wind only flow at region A

Diagram shows a copper block at temperature of 90 oC is in contact with an iron block at temperature of 50 oC.

Copper block

What is the temperature of the iron block when thermal equilibrium is achieved between the copper block and the iron block after a few minutes? A B C D

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Same as room temperature. Less than 50 oC. Between 50 oC and 90 oC. More than 90 oC.

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43.

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A clinical thermometer is designed to respond quickly to a change in temperature and to have a high sensitivity.

Glass bulb

Bore

Which features should the clinical thermometer have?

A B C D

44.

Glass Bulb Thick glass Thick glass Thin glass Thin glass

Bore narrow wide narrow wide

The table shows the specific heat capacity of four materials P, Q, R and S. Material

Specific heat capacity/Jkg-1°C-1

P Q R S

800 910 1300 1600

Which material is most suitable in making the handle of a pot? A B C D

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P Q R S

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45.

Temperature / oC

70 60 50 40 30 20 10 0

1

2

3

4

5

6

7

t / minute

The graph shows the heating curve of a 500 g liquid P by a 60 W immersion heater. The specific heat capacity of the liquid Q is

46.

A

220 J kg-1 oC-1

B

720 J kg-1 oC-1

C

1260 J kg-1 oC-1

D

1680 J kg-1 oC-1

A block of ice is heated at a constant rate. Eventually the melted ice boils. The graph shows how the temperature changes with time. 100

Temperature/0C

0 Time/minutes 0

5

10

How many minutes did it take to melt all the ice? A

4

B

7

C 9

D 11

47. The latent heat of fusion of a substance is the quantity of heat required to A B C D

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increase the temperature of the substance increase the kinetic energy of the molecules in the solid substance. change the phase of liquid to gas without a change in temperature. overcome the attractive force between the molecules in the solid substance so that they are free to move.

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Diagram shows the air pressure in a tyre of a car before starting a journey.

After a long non-stop journey, the pressure of the tyre is 212.0 kNm-2. This because A. B. C. D.

49.

The air pressure in a gas tank is 200 k Nm-2 at a temperature of 27 oC. What is the air pressure in the gas tank at a temperature of 37 oC ? [ Assume the volume of the air in the gas tank is kept constant ] A B C D

50

the volume of air in the tyre decreases. the temperature of air in the tyre increases. the number of air molecules in the tyre increases. frequency of collision between the air molecules in the tyre decreases.

109.4 k Nm-2 145.9 k Nm-2 193.5 k Nm-2 206.7 k Nm-2

Diagram shows the image of a boy seen in a mirror. The mirror is for security in a shop.

What type of mirror is being used? A B C D

Plane mirror Convex mirror Concave mirror Parabolic mirror END OF THE QUESTIONS

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4531/2 Fizik Kertas 2 OKTOBER 2008 2 ½ Jam

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Nama : ……………………………….............................. Tingkatan : ………………

SEKTOR SEKOLAH BERASRAMA PENUH BAHAGIAN SEKOLAH KEMENTERIAN PELAJARAN MALAYSIA

PEPERIKSAAN AKHIR TAHUN (DIAGNOSTIK) TINGKATAN 4 2008

FIZIK KERTAS 2 Dua jam tiga puluh minit (Anda dinasihatkan untuk memperuntukkan masa 90 minit untuk Bahagian A, 30 minit untuk Bahagian B dan 30 minit untuk Bahagian C) JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU. 1. 2. 3. 4. 5.

6. 7. 8.

Kertas soalan ini mengandungi tiga bahagian : Bahagian A, Bahagian B dan Bahagian C Jawab semua soalan dalam Bahagian A, satu soalan daripada Bahagian B dan satu soalan daripada Bahagian C. Jawapan kepada ketiga-tiga bahagian ini hendaklah diserahkan bersama-sama. Jawapan kepada Bahagian A hendaklah ditulis dalam ruang yang disediakan dalam kertas soalan. Jawapan kepada Bahagian B dan Bahagian C hendaklah dituliskan pada ruang jawapan yang disediakan dalam kertas soalan ini. Walau bagaimanapun kertas tulis tambahan sekiranya digunakan, perlulah diikat bersama dengan buku soalan ini. Dalam jawapan anda, persamaan, gambar rajah, jadual, graf dan cara lain yang sesuai untuk menjelaskan jawapan anda boleh digunakan. Rajah tidak dilukis mengikut skala kecuali dinyatakan. Markah maksimum yang diperuntukkan ditunjukkan dalam kurungan pada hujung tiap-tiap soalan atau bahagian soalan. Penggunaan kalkulator saintifik yang tidak boleh diprogramkan dibenarkan.

Untuk Kegunaan Pemeriksa Markah Bahagian Soalan Markah Penuh 1 4

A

2

5

3

6

4

7

5

8

6

8

7

10

8

12

Jumlah Bahagian A B C

60

9

20

10

20

11

20

12

20

Jumlah Besar

Kertas ini mengandungi 22 halaman bercetak 4531/2

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The following information maybe useful. The symbols have their usual meaning. 1.

v2 = u2 + 2as

2.

a=

3.

vu t 1 s = ut + at2 2

4.

Momentum = mv

5.

F = ma

6.

Kinetic Energy = ½ mv2

7.

Gravitational Potential Energy = mgh

8.

Elastic Potential Energy =

9.

F = kx

10.

ρ=

11.

Pressure in liquid, P = hg

12.

Pressure, P=

13.

Heat, Q = mc

14.

Heat, Q = mℓ

15.

P1V1 = P2V2

16.

V1 V2  T1 T2

17.

P1 P2  T1 T2

18.

PV = constant T

19.

g = 10 ms-2

1 Fx 2

m V

F A

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Section A [60 marks] Answer all question

1

Diagram 1 shows a micrometer screw gauge when the jaws are closed. Rajah 1 menunjukkan sebuah tolok skru mikrometer semasa rahangnya rapat.

P

DIAGRAM 1 RAJAH 1

a) Name the part label P. Namakan bahagian berlabel P. ……………………………………………………………………………….......................................... [1 mark] b) What is the function of the part label P? Apakah fungsi bahagian berlabel P ? ……………………………………………………………………………….......................................... [1 mark] c) What is the value of zero error shown by the micrometer above? Berapakah nilai ralat sifar yang ditunjukkan oleh tolok skru mikrometer di atas? ……………………………………………………………………………….......................................... [1 mark] d) Give one reason why micrometer screw gauge is more accurate compare to a vernier calliper. Berikan satu sebab mengapa tolok skru mikrometer adalah alat yang lebih jitu berbanding dengan angkup vernier . …………………………………………………………………………................................................... [1 mark]

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Diagram 2 shows a boy throwing a ball upwards at a velocity of 10 m s-1. The ball decelerates to a maximum height before accelerating downwards. Rajah 2 menunjukkan seorang budak lelaki melontar bola ke atas dengan kelajuan 10 m s-1. Bola itu bergerak dengan nyahpecutan sehingga mencapai tinggi maksimum sebelum memecut turun.

DIAGRAM 2 RAJAH 2 (a)

Name one force that is acting on the ball. Namakan daya yang bertindak pada bola itu. …………………………………………………………………………………………………………. [1 mark]

(b)

Using the equation: v2 = u2 + 2 as , calculate the maximum height reach by the ball. Menggunakan persamaan: v2 = u2 + 2 as, hitung tinggi maksimum yang dicapai oleh bola.

[2 marks] (c)

Sketch a displacement, s against time,t graph to describe the motion of the ball. Lakarkan graf sesaran,s, lawan masa,t, bagi menerangkan pergerakan bola.

[2 marks]

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Diagram 3 shows an arrangement of apparatus used to determine the atmospheric pressure in a laboratory. The length of the glass tube is 100 cm and the atmospheric pressure in the lab is 75 cm Hg. Rajah 3 menunjukkan satu susunan radas digunakan untuk menentukan tekanan atmosfera di dalam makmal. Panjang tiub kaca adalah 100 cm dan tekanan atmosfera di dalam makmal adalah 75 cm Hg.

d DIAGRAM 3 RAJAH 3 (a )

(b )

(c )

Name the apparatus shown in Diagram 3. Namakan radas yang ditunjukkan pada Rajah 3. ……………………………………………………………………………………………………. [ 1 mark ] What is in space X? Apakah yang terdapat dalam ruang X? …………………………………………………………………………………………………… [ 1 mark ] (i) What is the value of H? Apakah nilai H? …………………………………………………………………………………………………………. [ 1 mark ] (ii) What happens to height, H, when this apparatus is submerged in water. Apakah yang berlaku kepada ketinggian, H, apabila radas ini ditenggelamkan ke dalam air. ………………………………………………………………………………………………………….. [ 1 mark ] (iii) Give a reason for your answer in c(ii). Berikan satu sebab kepada jawapan anda di c (ii).

(d)

………………………………………………………………………………………………………….. [ 1 mark ] State one application of atmospheric pressure in everyday life. Nyatakan satu aplikasi tekanan atmosfera dalam kehidupan harian. ………………………………………………………………………………………………………….. [1 mark]

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Diagram 4 shows a truck pulling a car with a cable. The cable is at an angle of 600 to the horizontal. The force, F, of the cable is 1500 N. Rajah 4 menunjukkan sebuah trak sedang menunda sebuah kereta dengan menggunakan kabel. Kabel itu adalah pada sudut 600 dari ufuk. Daya, F, pada kabel adalah 1500 N.

DIAGRAM 4 RAJAH 4 (a)

What is meant by force? Apakah yang dimaksudkan dengan daya? ………………………………………………………………………………………….............................. …………………………………………………………………………………………………………….. [1 mark]

(b)

(c)

On Diagram 4, draw the horizontal component, Fx and the vertical component Fy for F. In your drawing show the direction of Fx and Fy. Dalam Rajah 4, lukiskan komponen ufuk, Fx, dan komponen tegak, Fy untuk F. Dalam lukisan anda tunjukkan arah Fx dan Fy. [2 marks] Calculate the magnitude of the horizontal component, Fx. Hitung magnitud komponen ufuk Fx.

[2 marks] (d)

What is the effect of the component of forces, Fx and Fy to the towed car? Apakah kesan komponen daya, Fx dan Fy kepada kereta yang ditunda itu? (i)

Fx :…………………………………………………………………………………………………..

(ii)

Fy:…………………………………………………………………………………………………… [2 marks]

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Diagram 5.1 and Diagram 5.2 show the hair shampoo is pressed out with the same force from a shampoo container. Rajah 5.1 dan 5.2 menunjukkan syampu rambut ditekan keluar dengan daya yang sama dari bekas syampu

(a)

(b)

What is meant by pressure ? Apakah yang dimaksudkan dengan tekanan? ……………………………………………………………………………………………………. [ 1 mark ] Based on Diagram 5.1 and Diagram 5.2, compare Berdasarkan Rajah 5.1 dan 5.2, bandingkan (i)

( ii )

(c)

the volume of shampoo in the container isipadu syampu dalam bekas ……………………………………………………………………………………………… [1 mark ] the volume of shampoo that spurts out from the container isipadu syampu yang dipancut keluar dari bekas.

…………………………………………………………………………………………….. [1 mark] Based on your answer in (b), Berdasarkan jawapan anda dalam (b), (i)

relate the volume of shampoo in the container with the volume of shampoo that spurts out from the container. hubungkaitkan isipadu syampu dalam bekas dengan isipadu syampu yang dipancut keluar dari bekas. …………………………………………………………………………………………….. [1 mark]

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8 MOZ@C

SULIT (ii)

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relate the volume of shampoo that spurts out from the container with the pressure exerted by the shampoo. hubungkaitkan isipadu syampu yang dipancut keluar dari bekas dengan tekanan yang dikenakan oleh syampu. …………………………………………………………………………………………….. [1 mark]

(iii)

state the relationship between pressure and the volume of shampoo in the container. nyatakan hubungan di antara tekanan dan isipadu syampu di dalam bekas. ………………………………………………………………………………………………

(d)

…………………………………………………………………………………………….. [1 mark ] State one characteristic of the liquid Nyatakan satu ciri cecair itu ……………………………………………………………………………………………………… [1 mark ]

(e)

Name the principle involved that enable the shampoo to spurt out from the container. Namakan prinsip yang terlibat yang membolehkan syampu dikeluarkan dari dalam bekas. ……………………………………………………………………………………………………… [1 mark]

6

Diagram 6.1 and 6.2 show a virtual image produced by a plane mirror and a convex mirror respectively. Rajah 12(a) dan rajah 12(b) menunjukkan imej maya yang terbentuk pada cermin satah dan cermin cembung masing-masing.

DIAGRAM 6.1 RAJAH 6.1 (a)

DIAGRAM 6.2 RAJAH 6.2

What is meant by virtual image? Apakah yang dimaksudkan dengan imej maya? ......................................................................................................................................... ........................ [1 mark ]

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9 MOZ@C

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(b)

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Based on Diagram 6.1 and Diagram 6.2, Berdasarkan Rajah 6.1 dan Rajah 6.2, (i) compare the size of the image bandingkan saiz imej ........................................................................................................................................................... [1 mark] (ii) state one other similarity of the image formed besides virtual. nyatakan satu ciri imej yang sepunya yang lain daripada imej maya. ........................................................................................................................................................... [1 mark]

(c)

In Diagram 6.3, draw a ray diagram to show how the image in Diagram 6.2 is formed. Dalam Rajah 6.3, lukiskan rajah sinar untuk menunjukkan bagaimana imej dalam Rajah 6.2 terbentuk. [3 marks]

DIAGRAM 6.3 RAJAH 6.3 (e)

Name the light phenomenon that occurs. Namakan fenomena cahaya yang berlaku. ............................................................................................................................................................ [1mark]

(f)

State one advantage of using convex mirror as the side mirror of a car. Nyatakan satu kelebihan menggunakan cermin cembung sebagai cermin sisi kereta. …………………………………………………………………………................................................ [1mark]

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SULIT SMS MUZAFFAR SYAH , MELAKA

SULIT 7

10 MOZ@C

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Diagram 7 shows a hydrometer used to determine the density of a liquid. Rajah 7 menunjukkan sebuah hidrometer yang digunakan untuk menentukan ketumpatan suatu cecair

Diagram 7 Rajah 7 (a)

(i) Name the physics principle involved . Namakan prinsip fizik yang terlibat. …………………………………………………………………………………………………….. [ 1 mark ] (ii) Explain why the hydrometer floats on the surface of the liquid. Terangkan mengapa hidrometer terapung di atas permukaan cecair itu. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………. [ 1 marks ] (iii) The volume of the hydrometer under the surface of the liquid is 25 cm3. The density of liquid measured is 0.8 g cm-3. Calculate the buoyant force exerted to the hydrometer. Isipadu hidrometer di bawah permukaan cecair adalah 25 cm3. Ketumpatan cecair yang diukur ialah 0.8 g cm-3. Hitungkan daya tujah keatas yang bertindak ke atas hidrometer itu.

[ 2 marks ]

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SULIT (b)

11 MOZ@C

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The hydrometer in Diagram 7 is unsuitable to measure the density of an acid solution which has smaller density. Hidrometer dalam Rajah 7 tidak sesuai untuk mengukur ketumpatan larutan asid yang mempunyai ketumpatan yang lebih rendah. (i) State two modifications required to the hydrometer so that it can be used to measure the density of the acid solution. Nyatakan dua pengubahsuaian yang diperlukan kepada hidrometer itu supaya ia boleh menyukat ketumpatan larutan asid itu. ......………………………………………………………………………………………………… . .…………………………………………………………………………………………………... [ 2 marks ] (ii) Give the reasons for your answer in b(i) Berikan sebab bagi jawapan anda dalam (b) (i). .…………………………………………………………………………………………………… ……………………………………………………………………………………………………. ……………………………………………………………………………………………………. [ 2 marks ] (iii) Suggest one method to increase the stability of the hydrometer. Cadangkan satu kaedah untuk meningkatkan kestabilan hidrometer tersebut. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… [ 1 mark ]

(c)

What happens to the hydrometer in Diagram 7 when it is placed in a higher density liquid? Apakah yang berlaku kepada hidrometer dalam Rajah 7 apabila ia diletakkan dalam cecair yang berketumpatan lebih tinggi?. .………………………………………………………………………………………………………… …………………………………………………………………………………………………………. [ 1 mark ]

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12 MOZ@C

SULIT 8

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Diagram 8.1 and Diagram 8.2 show a block of iron and a block of aluminium, each of mass 250 g, are heated by an immersion heater. The power of the immersion heater is 50 W. Rajah 8.1 dan Rajah 8.2 menunjukkan sebuah blok besi dan sebuah blok aluminium setiap satu berjisim 250 g dipanaskan dengan pemanas rendam. Kuasa pemanas rendam itu adalah 50 W.

DIAGRAM 8.1

DIAGRAM 8.2

The temperature-time graph for the two experiments are shown in diagram 8.3 . Graf suhu-masa bagi kedua-dua eksperimen ditunjukkan dalam Rajah 8.3.

DIAGRAM 8.3 (a)

(b)

What is meant by heat? Apakah yang dimaksudkan dengan haba? ……………………………………………………………………………………………………… [1 mark] Based on Diagram 8.3, calculate the change in temperature per minute for; Berdasarkan Rajah 8.3, hitung perubahan suhu per minit untuk (i) Iron Besi [2 marks]

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(ii) Aluminium Aluminium

[2 marks] (c)

Based on your calculation, which metal gets hot faster? Explain your answer. Berdasarkan kepada kiraan anda, logam yang manakah lebih cepat panas? Terangkan jawapan anda. ………………………………………………………………………………………………………….. ………………………………………………………………………………………………………….. [2 marks]

(d)

Determine the specific heat capacity for iron and aluminium. Tentukan muatan haba tentu besi dan aluminium.

[3 marks] (e)

Table 8 shows the specific heat capacity of materials which could be used to make a frying pan. Jadual 8 menunjukkan muatan haba tentu bahan yang boleh digunakan untuk membuat kuali. Material Bahan A B C

Specific heat capacity/ J kg-1 oC-1 Muatan haba tentu 780 1528 1415

TABLE 8 Based on your answer in (c) and (d) , which material would be suitable to make a frying pan? Explain your answer. Berdasarkan kepada jawapan anda di (c) dan (d), bahan yang manakah sesuai untuk dibuat kuali? …………………………………………………………………………………………………………. …………………………………………………………………………………………………………. [2 marks]

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14 MOZ@C

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Section B [ 20 marks ] Answer any one question

9

(a)

Diagram 9.1 and Diagram 9.2 show two springs M and N. Both springs are of the same material and same wire thickness but have different spring constant. Rajah 9.1 dan Rajah 9.2 menunjukkan dua spring M dan N. Kedua-dua spring adalah dari bahan yang sama dan ketebalan yang sama tetapi mempunyai pemalar spring yang berlainan

DIAGRAM 9.1

DIAGRAM 9.2

(i) What is meant by spring constant? Apakah yang dimaksudkan dengan pemalar spring? [1 mark] (ii) Using Diagram 9.1 and Diagram 9.2, compare the mass loaded by the spring, the diameter of the spring and the extension of the spring. Relate the mass loaded by the spring, the diameter of the spring and the extension of the spring with the spring constant. Menggunakan Rajah 9.1 dan Rajah 9.2, bandingkan jisim yang dibeban oleh spring, diameter spring dan pemanjangan spring. Hubungkaitkan jisim yang dibeban oleh spring, diameter spring dan pemanjangan spring dengan pemalar spring. [5 marks]

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SULIT SMS MUZAFFAR SYAH , MELAKA

15 MOZ@C

SULIT (b)

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The springs in Diagram 9.1 and 9.2 will return to its original length when the load is removed. Explain how the forces between molecules cause the elasticity. Spring dalam Rajah 9.1 dan 9.2 akan kembali kepada panjang asal apabila beban dikeluarkan. Terangkan bagaimana daya-daya antara molekul menyebabkan kekenyalan.

[ 4 marks] spring in suspension system

DIAGRAM 9.3 RAJAH 9.3

(c)

Diagram 9.3 shows a spring of the suspension system in an ordinary motorcycle. Rajah 9.3 menunjukkan suatu spring yang terdapat dalam sistem suspensi pada sebuah motosikal biasa.

(i) State two functions of the spring in the suspension system ? Nyatakan dua fungsi spring dalam sistem suspensi itu?

[2 marks] (ii) Using the suitable physics concepts, you are required to give some suggestions on designing a racing motorcycle of 500cc. Explain your suggestions based on the following aspects ; Menggunakan prinsip fizik yang sesuai, anda dikehendaki memberi beberapa cadangan untuk merekabentuk sebuah motosikal lumba 500 cc. Terangkan cadangan anda berdasarkan aspekaspek berikut:

- density of motorcycle parts ketumpatan bahagian motosikal

- engine power kuasa enjin

- spring in suspension system spring dalam sistem suspensi

- size of tyre saiz tayar

[ 8 marks]

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16 MOZ@C

SULIT 10

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Diagram 10.1 and Diagram 10.2 show two methods of transfering a heavy load of 50 kg from the ground to the lorry. The forces needed to transfer the heavy load are not the same. However, the work done for both methods of transfering are the same. Rajah 10.1 dan Rajah 10.2 menunjukkan dua kaedah untuk memindahkan beban yang berat berjisim 50 kg dari tanah ke atas lori. Daya yang diperlukan untuk memindahkan beban yang berat itu berbeza. Walaubagaimanapun, kerja yang dilakukan bagi kedua-dua kaedah pemindahan adalah sama.

DIAGRAM 10.1 RAJAH 10.1

(a)

DIAGRAM 10.2 RAJAH 10.2

What is meant by work? Apakah yang dimaksudkan dengan kerja? [1 mark]

(b)

Using diagram 10.1 and 10.2, compare the forces needed to transfer the load, the distance travelled by the load and the potential energy gained by the load. Relate the forces needed to transfer the load and the distance travelled by the load with the work done. State the relationship between the potential energy gained by the load and the work done on transfering the load. Menggunakan Rajah 10.1 dan 10.2, bandingkan daya yang diperlukan untuk memindahkan beban, jarak yang dilalui beban dan tenaga keupayaan yang diperolehi beban. Hubungkaitkan daya yang diperlukan untuk memindahkan beban dan jarak yang dilalui dengan kerja yang dilakukan. Nyatakan hubungan di antara tenaga keupayaan yang diperolehi dan kerja yang dilakukan untuk memindahkan beban. [ 5 marks]

(c)

In a wall climbing competition, Ali of mass 45 kg reached the peak earlier than Chong of mass 60 kg. Even though Ali won the competition, Ali is said to have the same power as Chong. Explain the reason why. Dalam pertandingan ‘wall climbing’, Ali yang berjisim 45 kg sampai ke puncak lebih dahulu dari Chong yang berjisim 60 kg. Sungguhpun Ali memenangi pertandingan itu, Ali dikatakan mempunyai kuasa yang sama dengan Chong. Terangkan sebab mengapa. [4 marks]

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SULIT SMS MUZAFFAR SYAH , MELAKA

17 MOZ@C

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Diagram 10.3 shows an athlete of mass 60 kg in a Pole Vaulting event. J, K,N,O and P are the positions of the athlete. The height of the bar from ground is 5 m. Rajah 10.3 menunjukkan seorang atlit yang berjisim 60 kg dalam acara Lompat Bergalah. J, K,N,O dan P adalah kedudukan atlit. Tinggi palang dari tanah adalah 5 m.

DIAGRAM 10.3 RAJAH 10.3

Using the suitable physics concepts, suggest modifications that can be made to the athlete’s techniques and equipments so that the athlete can jump higher and land safely. Modifications can be emphasised on the following aspects; Menggunakan prinsip fizik yang sesuai, terangkan pengubahsuaian yang perlu dilakukan kepada teknik athlit dan peralatan supaya athlit boleh melompat dengan lebih tinggi dan mendarat dengan selamat. Pengubahsuaian boleh menekankan kepada aspek-aspek berikut: -

running technique teknik larian

-

jumping technique teknik melompat

-

characteristics of pole ciri-ciri galah

-

athlete’s attire pakaian athlit

-

athlete’s safety keselamatan athlit [10 marks]

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Section C [20 marks] Answer any one question 11.

Diagram 11.1 shows a metal block of mass 250 g is immersed in boiling water for a long time. The metal block is then transferred to a beaker containing water until a thermal equilibrium is achieved. The initial temperature of water in the beaker is 29 °C and the mass of water is 500g. Rajah 1.1 menunjukkan satu bongkah logam berjisim 0.25kg direndam di dalam air yang mendidih dalam jangka masa yang lama. Bongkah logam itu dipindahkan ke dalam satu bikar berisi air sehingga mencapai keseimbangan terma. Suhu awal air di dalam bikar itu adalah 29 °C dan jisim air itu adalah 500g.

DIAGRAM 11.1 RAJAH 11.1

(a) (i) What is meant by thermal equilibrium? Apakah yang dimaksudkan dengan keseimbangan terma? [1 mark] (ii) Explain how a liquid –glass thermometer can be used to measure the body temperature of a sick person. Explain heat transfer that takes place at each stage of measurement. Terangkan bagaimana termometer cecair dalam kaca digunakan untuk mengukur suhu badan seorang yang sakit. Terangkan pemindahan tenaga yang berlaku dalam setiap peringkat pengukuran. [4 marks] (b) Based on Diagram 11.1 and the informations above , when the metal block is transferred and immersed in the second beaker of water, Berdasarkan Rajah 11.1 dan maklumat-maklumat di atas, apabila bongkah logam dipindahkan dan direndam ke dalam bikar air yang kedua, (i) (ii) (iii)

state the initial temperature of the metal block. nyatakan suhu awal bongkah logam. calculate the final temperature of the water. hitungkan suhu akhir air di dalam Rajah 11.1 state one assumption which you have made in (b) (ii) nyatakan satu anggapan yang telah anda buat dalam (b) (ii) .

[Specific heat capacity of water is 4200 J kg-1 °C] [ Muatan haba tentu air adalah 4200 J kg-1 °C]

[Specific heat capacity of the water is 900 J kg-1 °C] [ Muatan haba tentu bongkah logam adalah 900 J kg-1 °C] [5 marks]

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19 MOZ@C

SULIT (c)

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Diagram 11.2 shows parts of a car engine cooling system that uses liquid with a certain specific heat capacity. Rajah 11.2 menunjukkan sebahagian sistem penyejuk enjin kereta yang menggunakan cecair dengan muatan haba tentu yang tertentu.

Diagram 11.2 Rajah 11.2 You are asked to investigate the features of car radiator and the cooling material as shown in the Table 11 below. Explain the suitability of each feature in Table 11 and then determine the most suitable car engine radiator to be used. Give reason for your choice. Anda ditugaskan untuk mengkaji ciri-ciri radiator kereta dan cecair penyejuk seperti yang ditunjukkan dalam Jadual 11 dibawah. Terangkan kesesuaian setiap ciri di dalam Jadual 11 di bawah dan seterusnya tentukan radiator enjin kereta yang paling sesuai digunakan . Berikan sebab untuk pilihan anda. Ciri Features

No. Of fin Blade

Size of Fan

Boiling point of liquid/°C

Bilangan sirip penyejuk

Saiz kipas

Takat didih cecair /°C

Radiator P Q R S T

Many Banyak A few Sedikit Medium Sederhana Many Banyak Many Banyak

Small Kecil Small Kecil Big Besar Big Besar Medium Sederhana TABLE 11

Specific Heat Capacity of liquid/ J kg-1 °C Muatan Haba Tentu cecair /J kg-1 °C

78

2450

78

2450

100

2450

100

4200

100

4200

[10 marks]

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SULIT SMS MUZAFFAR SYAH , MELAKA

SULIT 12

20 MOZ@C

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Diagram 12.1 shows a patient is being fed with medicine from an intravenous injection ( IV ) bottle. The medicine from the IV bottle is able to enter the patient’s vein due to the difference in pressure. Rajah 12.1 menunjukkan seorang pesakit disalurkan ubat melalui botol suntikan intravenus ( IV ). Ubat dari botol IV boleh dialirkan kepada pesakit disebabkan oleh perbezaan tekanan.

DIAGRAM 12.1 RAJAH 12.1

(a) State one factor that affect the pressure in liquid. Nyatakan dua faktor yang mempengaruhi tekanan dalam cecair. [1 mark] (b) Explain how the medicine flows from the IV bottle into the patient’s vein. Terangkan bagaimana ubat mengalir dari botol IV kepada vena pesakit. [4 marks] (c)

Diagram 12.2 shows a water supply system. Water from a water storage tank is pumped to the water tank of a house in a housing estate. Rajah 12.2 menunjukkan sistem bekalan air. Air daripada tangki penyimpan air dipam ke tangki air sebuah rumah dalam suatu kawasan perumahan.

DIAGRAM 12.2 RAJAH 12.2

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Table 12 shows the specifications of four water storage tanks, P, Q, R and S, that can be used to store water in a housing estate. Jadual 12 menunjukkan speksifikasi empat tangki penyimpan air, P, Q, R dan S, yang digunakan untuk menyimpan air untuk sebuah rumah dalam suatu kawasan perumahan. Water storage tank Tangki penyimpan air

P

Q

R

S

Material used Bahan yang digunakan

metal logam

concrete konkrit

concrete konkrit

metal logam

Density Ketumpatan

low rendah

high tinggi

low rendah

low rendah

low rendah

high tinggi

high tinggi

low rendah

Shape Bentuk

Height from the ground Tinggi daripada bumi

TABLE 12 JADUAL 12 You are required to determine the most suitable water storage tank. Study the specifications of all the four water storage tanks based on the following aspects : Anda diminta untuk mengenal pasti tangki penyimpan air yang paling sesuai. Kaji spesifikasi keempat-empat tangki penyimpan air itu berdasarkan aspek : -

The material used Bahan yang digunakan

-

The density of the tank Ketumpatan tangki

-

The shape of the tank Bentuk tangki

-

The height of the tank from the ground Ketinggian tangki daripada bumi

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22 MOZ@C

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Explain the suitability of the aspects. Terangkan kesesuaian aspek-aspek tersebut. [10 marks] (d)

Diagram 12.3 shows a manometer with arms of different cross section. Liquid Y of density 1 200 kg m-3 is poured into the manometer. The level of liquid Y is found to be the same at both arms of the manometer. Rajah 12.3 menunjukkan sebuah manometer dengan lengan yang berbeza keratan rentasnya. Cecair Y dengan ketumpatan 1 200 kgm-3 diisi ke dalam manometer. Paras cecair Y didapati sama pada kedua-dua lengan manometer.

DIAGRAM 12.3 RAJAH 12.3

DIAGRAM 12.4 RAJAH 12.4

i.

Explain why the level of liquid Y in both arms of the manometer are equal. Terangkan mengapa paras cecair Y pada kedua-dua lengan manometer adalah sama. [2 marks]

ii.

Diagram 12.4 shows the condition of liquids when another immiscible liquid, X, is poured into the right arm of the manometer. Calculate the density of liquid X. Rajah 12.4 menunjukkan keadaan cecair apabila sejenis cecair yang tak bercampur, X, dituang ke dalam lengan kanan manometer tersebut. Hitung ketumpatan cecair X. [3 marks]

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SULIT SMS MUZAFFAR SYAH , MELAKA

MOZ@C 4531/2 Fizik Kertas 3 OKTOBER 2007 1 ½ Jam

SULIT Nama : ……………………………….............................. Tingkatan : ………………

BAHAGIAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER KEMENTERIAN PELAJARAN MALAYSIA

PEPERIKSAAN AKHIR TAHUN (DIAGNOSTIK) TINGKATAN 4 2007

FIZIK Kertas 3 Satu jam tiga puluh minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU 1. Kertas soalan ini mengandungi dua bahagian : Bahagian A dan Bahagian B. 2. Jawab semua soalan dalam Bahagian A. Tuliskan jawapan bagi Bahagian A dalam ruang yang disediakan dalam kertas soalan. 3. Jawab satu soalan daripada Bahagian B. Tuliskan jawapan Bahagian B pada ruangan yang disediakan.. Jawab Bahagian B dengan lebih terperinci. Jawapan mestilah jelas dan logik. 4. Tunjukkan kerja mengira, ini membantu anda mendapat markah. 5 Gambarajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan. 6. Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan dalam kurungan. 7 Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh di programkan 8 Masa yang dicadangkan untuk menjawab Bahagian A ialah 60 minit dan Bahagian B ialah 30 minit. 9 Serahkan semua kertas jawapan anda di akhir peperiksaan

Kegunaan Pemeriksa Bahagian

Soalan

Markah Penuh

A

1

16

2

12

3

12

4

12

B

Markah

JUMLAH

Kertas soalan ini mengandungi 11 halaman bercetak 4531/2

SULIT

SMS MUZAFFAR SYAH , MELAKA

2 MOZ@C Section A Bahagian A [28 marks} [28 markah] Answer all questions in this section. Jawab semua soalan dalam bahagian ini. 1

A students carries out an experiment to investigate the relationship between volume of air, V and the pressure, P. The arrangement of the apparatus is shown in Diagram 1.1. Seorang murid menjalankan satu eksperimen untuk mengkaji hubungan antara isipadu udara dan tekanan. Susunan radas ditunjukkan pada Rajah 1.1.

Diagram 1.1 Rajah 1.1 The piston is pushed slowly until the volume of air is 35 cm3.The pressure of air, P is recorded by using the Bourdon gauge. The actual reading of the Bourdon gauge is shown in diagram 1.2 on page 3. The above procedure is repeated by varying the volume of air 30 cm3, 25 cm3, 20 cm3, 15 cm3 and 10 cm3.The actual corresponding reading of Bourdon gauge shown in Diagram 1.3, 1.4, 1.5 and 1.6 on page 4 Picagari ditekan secara perlahan sehingga isipadu udara 35 cm3.Tekanan udara,P direkod dengan menggunakan Tolok Bourdon. Bacaan sebenar oleh Tolok Bourdon ditunjukkan pada diagram 1.2 di halaman 3. Prosedur di bawah diulangi bagi isipadu udara 30 cm3, 25 cm3, 20 cm3, 15 cm3 and 10 cm3. Bacaan sebenar yang sepadan dengan bacaan oleh Tolok Bourdon ditunjukkan pada Rajah 1.3, 1.4, 1.5 dan 1.6 di halaman 4. (a) For the experiment on page 3 and 4, identify: Bagi eksperimen di halaman 3 dan 4 kenal pasti: (i) The manipulated variable Pembolehubah dimanipulasi ……………………………………………………………………………….. [1 mark] [1 markah ] (ii) The responding variable Pembolehubah gerak balas ………………………………………………………………………………… [1 mark] [1 markah ] (iii) The constant variable Pembolehubah dimalarkan ………………………………………………………………………………..... [1 mark] [1 markah ]

SMS MUZAFFAR SYAH , MELAKA

3 MOZ@C

P=……………………. Volume of air = 35 cm3 Diagram 1.2

P =………………….. Volume of air = 25 cm3 Diagram 1.4

P=……………………. Volume of air = 15 cm3 Diagram 1.6

SMS MUZAFFAR SYAH , MELAKA

P =…………………..… Volume of air = 30 cm3 Diagram 1.3

P =…………………… Volume of air = 20 cm3 Diagram 1.5

4 MOZ@C (b)

Based on Diagram 1.2, 1.3, 1.4, 1.5 and 1.6 on page 3 Berdasarkan Rajah 1.2, 1.3, 1.4, 1.5 dan 1.6 di halaman 3 (i) Record the Bourdon gauge reading, in the spaces provided on page 3. Catatkan bacaan Tolok Bourdon dalam ruang yang disediakan di halaman.

[ 2 marks] [ 2 markah] (ii)Tabulate your results for V,

and P in space below.

Jadualkan keputusan anda bagi V,

dan P pada ruang di bawah

[5 marks] [5 markah] (c)

.

On the graph paper on page 5 , plot graph of P against Pada kertas graf di halaman 5, lukiskan graf P melawan

. [5 marks] [5 markah]

(d)

Based on your graph in 1 (c) , state the relationship between P and Berdasarkan graf anda di 1(c),nyatakan hubungan antara graf P melawan

.

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

SMS MUZAFFAR SYAH , MELAKA

5 MOZ@C Graph P against

SMS MUZAFFAR SYAH , MELAKA

6 MOZ@C

2

A student carries out an experiment to investigate the relationship between the force, F and time, t for a trolley move a distance of 1m. The result of this experiment is shown in the graph of F against

in diagram 2.1 on page 7.

Seorang murid menjalankan satu eksperimen untuk mengkaji hubungan daya,F dengan masa,t bagi satu troli yang bergerak dengan jarak 1m. Keputusan bagi eksperimen ini ditunjukkan oleh graf F melawan (a)

pada Rajah 2.1 dihalaman 7.

Based on the graph in Diagram 2.1, Berdasarkan graf pada Rajah 2.1 (i)What happen to F as

increases?

Apakah yang berlaku pada F apabila

bertambah?

………………………………………………………………………………........ [1 mark] [1 markah] (ii) Determine the value of F when

= 0.

Show on the graph, how do you determine the value of F. Tentukan nilai F apabila

=0

Tunjukkan pada graf ,bagaimana anda menentukan nilai F.

[2 marks] [2 markah] (iii)

Determine the value of t when F = 1.8 N. Tentukan nilai bagi t apabila F = 1.8 N. [2 marks] [2 markah]

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7 MOZ@C Graph of F against

F/N

2.40

2.00

1.60

1.20

0.80

0.40

0

0.10

0.20

0.30 Diagram 2.1

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0.40

0.50 / s-2

8 MOZ@C (b)

The mass of trolley, m is given by the formula m = Jisim bagi troli,m diberi dengan formula m = (i)

.

.

Calculate the gradient of the graph F against

. Show on the graph how

you determine the gradient. Hitungkan kecerunan bagi graf F melawan

. Tunjukkan pada graf

bagaimana anda menentukan kecerunan.

[3 marks] [3 markah] (ii)

By using formula m =

and the value obtained in b(i) calculate the

mass of trolley. Dengan menggunakan formula m =

dan nilai yang di perolehi dalam

b(i) ,hitungkan jisim bagi troli.

[2 marks] [2 markah] (c) State one precaution that should be taken to improve the results of the experiment. Tentukan satu langkah berjaga-jaga yang perlu diambil untuk meningkatkan keputusan dalam eksperimen. ……………………………………………………………………………………….. [1 mark] [1markah]

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9 MOZ@C Section B Bahagian B [ 12 marks ] [12 markah] Answer any one question. Jawab mana-mana satu soalan dalam bahagian ini. The time suggested to answer this section is 30 minutes. Masa yang dicadangkan untuk menjawab bahagian ini ialah 30 minit. 3

Diagram 3 shows two different situations of a skier by wearing ordinary shoes and then wearing snow hoes. The mass of ordinary shoes and the snow shoes are the same Rajah 3 menunjukkan dua situasi bagi seorang peluncur salji dengan memakai kasut biasa dan kemudiannya memakai kasut salji. Jisim kasut biasa dan kasut salji adalah sama.

Diagram 3 Rajah 3 Based on your observations on the depth of sinking of the skier in the snow by wearing ordinary shoes and by wearing snow shoes. Berdasarkan pemerhatian anda tentang kedalaman tenggelam peluncur salji itu di dalam salji dengan memakai kasut biasa dan dengan memakai kasut salji.

(a) State one suitable inference Buat satu inferens yang sesuai

(b) State one appropriate hypothesis that could be investigated. Nyatakan satu hipotesis yang sesuai dan boleh disiasat

[1 mark] [1 markah]

[1 mark] [1 markah] (c) With the use of apparatus such as a one kg load,plasticine,vernier caliper, different area of wooden block and other apparatus,describe an experiment to investigate the hypothesis stated in 3(b).

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10 MOZ@C Dengan menggunakan radas seperti 1kg pemberat, plastisin, angkup vernier dan radas lain ,terangkan satu eksperimen untuk menyiasat hipotesis yang dnyatakan di 3(b) In your description,state clearly the following : Dalam penerangan anda, jelaskan perkara berikut : (i)

The aim of the experiment Tujuan eksperimen

(ii)

The variables in the experiment Pembolehubah yang terlibat dalam eksperimen itu

(iii) The list of apparatus and materials Senarai radas dan bahan (iv)

The arrangement of the apparatus Susunan radas

(v)

The procedure of the experiment Describe how to control measure the manipulated variables and how to measure the responding variables. Prosedur yang digunakan dalam eksperimen. Terangkan bagaimana mengawal dan mengukur pembolehubah dimanipulasi, dan bagaimana mengukur pemboleh ubah bergerak balas.

(vi)

The way to tabulate the data Cara unyuk menjadualkan data

(vii) The way to analyse the data Cara untuk menganalisis data [10 marks] [10 markah]

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11 MOZ@C 4

A boy pushes the boxes along a level walkway as shown in Diagram 4.1. The boy experiences that the boxes move slowly. When the boy removes one of the boxes as shown in Diagram 4.2, he experiences that the boxes move faster than before although the same force was applied. Seorang budak lelaki menolak beberapa buah kotak di sepanjang satu laluan seperti yang ditunjukkan dalam Rajah 3.1. Budak lelaki itu mendapati kotak-kotak bergerak sangat perlahan. Apabila budak lelaki itu mengeluarkan satu daripada kotak-kotak itu seperti ditunjukkan dalam Rajah 3.2, dia mendapati kotak-kotak itu boleh digerakkan lebih laju, walaupun daya yang sama dikenakan..

Diagram 4.1 Rajah 4.1

Diagram 4.2 Rajah 4.2

Based on the information and obsevation above : Berdasarkan maklumat dan pemerhatian di atas: (a)

State one suitable inference. Nyatakan satu inferens yang sesuai. [ 1 mark ]

(b)

State one suitable hypotesis. Nyatakan satu hipotesis yang sesuai. [ 1 mark ]

(c)

With the use of apparatus such as a trolley, ticker timer, ticker tape, elastic cord and other apparatus, describe an experiment framework to investigate the hypothesis stated in 4(b). In your description, state slearly the following : Dengan menggunakan radas seperti troli, jangkamasa detik, pita detik, tali kenyal dan lain-lain radas, terangkan satu rangka kerja ekperimen untuk menyiasat hipotesis yang anda nyatakan dalam 3(b) Dalam penerangan anda jelaskan perkara berikut : (i) The aim of the experiment Tujuan eksperimen (ii) The variables in the experiment Pembolehubah yang terlibat dalam eksperimen itu (iii) The list of apparatus and materials Senarai radas dan bahan

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12 MOZ@C

(iv) The arrangement of the apparatus Susunan radas (v) The procedure of the experiment. Describe how to control the manipulated variables and how to measure the responding variables. Prosedur yang digunakan dalam eksperimen. Terangkan bagaimana mengawal pembolehubah dimanipulasi, dan bagaimana mengukur pemboleh ubah bergerak balas. (vi) The way to tabulate the data Cara untuk menjadualkan data (vii)

The way to analyse the data Cara untuk menganalisis data [10 marks] [ 10 markah] END OF QUESTION PAPER

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MOZ@C

SEKTOR SEKOLAH BERASRAMA PENUH BAHAGIAN SEKOLAH KEMENTERIAN PELAJARAN MALAYSIA PEPERIKSAAN AKHIR TAHUN (DIAGNOSTIK) SBP TINGKATAN 4 2008

FIZIK PERATURAN PERMARKAHAN

KERTAS 1, 2 dan 3

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MOZ@C

MARKING SCHEME – PAPER 1 (PHYSICS) 1

D

11

C

21

A

31

A

41

B

2

A

12

B

22

C

32

D

42

C

3

B

13

A

23

C

33

D

43

C

4

A

14

A

24

B

34

D

44

D

5

C

15

B

25

D

35

B

45

C

6

C

16

D

26

C

36

A

46

A

7

B

17

C

27

A

37

D

47

D

8

D

18

A

28

A

38

B

48

B

9

A

19

D

29

C

39

A

49

D

10

C

20

C

30

B

40

B

50

B

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MOZ@C MARKING SCHEME PAPER 2 PHYSICS DIAGNOSTIC F 4 EXAM SBP 2008 Question Number 1 (a) (i) Rachet (ii)

Mark scheme

Mark 1 1

(b)

To ensure the pressure exerted does not exceed // undue pressure is not exerted 0.02

(c)

The scale is smaller

1

1

Total 4 2. (a) (b)

Gravitational force

1

V2 = u2 + 2as 0 = 102 + 2 (-10) s S = 5m

1 1

(c)

2

3. (a)

Total 5 1

Barometer

(b)

Vacuum

1

(c) (i)

75 cm

1

(ii) increase

1

(iii) The pressure outside glass tube increases // pressure of water + atmospheric pressure (d) Vacuum cleaner// syphon // straw // syringe // water pump

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1 1 Total 6

MOZ@C 4. (a)

Anything that can move a stationary object // stop a moving object // change direction / shape / speed of an object.

1

(b)

2 (c)

Fx = 1500 x cos 60 = 750 N (d) (i) Fx : to make car move forward // overcome frictional force (ii) Fy: to lift the car off the ground // to move the car upwards// to overcome the weight of the car

1 1 1 1

Total 7 5. (a) Normal Force / surface area // Normal force per unit area 1 (b) (i) Diagram 5.2 is bigger / greater // vice versa 1 (ii) Diagram 5.2 is bigger / greater// vice versa 1 (c) (i) When the volume of shampoo in the container is less, the volume of 1 shampoo spurted out from the container is less // vice versa (ii) When the volume of shampoo spurted out from the container is big, 1 the pressure exerted towards the shampoo is big // vice versa (iii) When the volume of the shampoo in the container increase the 1 pressure also increases. (d) Liquid used is non compressible / hard to compress 1 (e) Pascal’s principle 1 Total 8 6. (a) Image that cannot be formed on screen 1 (b) (i) Image in Diagram 6.1 is bigger// vice versa 1 (ii) upright 1 (c)

3 (d) (e)

Reflection Wide angle of reflection // wider the vision

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1 1 Total 8

MOZ@C 7. (a) (i)

Archimedes’s principle // Forces in equilibrium // Principle of flotation

1

-The buoyant force = weight of the hydrometer // density of liquid > density of hydrometer // the volume of the liquid displaced by the hydrometer is large (iii) F =  V g = (8 x 102) x ( 25 x 10- 6 ) x 10 // = 0.2 N

1

(ii)

(b) (i)

1 1

(ii) - to avoid corrosion - to increase the buoyant force // to float the hydrometer

1 1

(iii) add more lead shot

1

(c) 8.

- the plastic wall is replaced by a glass wall - increase the volume of the air filled bulb // reduce the mass of lead shot

1 1

(a) (b) (i)

Less submerged //hydrometer floats higher Total Energy transfer from higher temperature body to lower temperature // type of energy that flow 80 2 = 40 °C per minute

(ii) 100 -20 7 = 80 7 = 11.43 °C per minute (c) -Iron -the rate of change of temperature is higher (d) C iron = 50 x 2 x 60 0.25 x 80 = 300 J kg-1 °C -1 C Al = 50 x 8 x 60 0.25 x 80 = 1200 J kg-1 °C (e) -A - it has lowest specific heat capacity // easily to get hot

1 10 1 1 1

1 1 1 1 1 1

1 2 Total 12

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MOZ@C SECTION B 9. (a) (i) (ii)

(b)

(c) (i)

Ratio of force to the extension // F/x where F = Force and x = extension) - mass in Diagram 9.1 = mass in diagram 9.2 - Diameter in Diagram 9.1 < diameter in Diagram 9.2 - Extension in Diagram 9.1 < extension in Diagram 9.2 - As the diameter increases the extension increases - spring constant decreases - The forces between molecule are attractive and repulsive force - When the spring is stretched attractive force between molecule acts - When the spring is compress the repulsive force between molecule acts - When the force is released, the spring returns to its original position due to the forces - to absorb the shock - to make the rider feel more comfortable // reduce vibration

1 1 1 1 1 1 1 1 1 1 1 1

(ii) Modification Low density of motorcycle parts High engine power High spring constant // stiffer spring Wide tyre // smooth tyre

10. (a)

Explanation So that it is lighter To produce high acceleration// high resultant force So that the spring is stiffer // motorcycle bounce less // less 8 vibration To increase stability // to reduce friction Total 20

Work = force x displacement

1

(b)

- Force in diagram 10.1 > force in Diagram 10.2 - Distance travelled in 10.1 < Distance in Diagram 10.2 - The Potential energy is the same - When Force is higher the distance traveled is shorter - Potential energy = Work done

1 1 1 1 1

(c)

- Power = mgh t - Power is directly proportional to mass - Power is inversely proportional to time - Ratio of mass and time for both is equal // Chong has high mass, Ali has shorter time , power is the same

1

SMS MUZAFFAR SYAH , MELAKA

1 1 1

MOZ@C (d) Modification Run with higher speed Bend pole greater // jump when the pole is maximum bend Elastic pole // strong material // low density

Explanation To increase kinetic energy Increase elastic potential energy

So that the pole can return to it original shape // So that it will not break // light Wear fit attire Reduce air resistance Use mattress increase time of collision // reduce impulsive force Total 11. (a) (i) Thermal equilibrium states that the net rate of heat flow from one medium to another medium and vice versa is zero// temperature for both medium is the same. (ii) - Place the thermometer under the tongue - Heat transfer from the body to the mercury - The temperature rises // length of mercury increases - When the equilibrium state is achieves take the reading of thermometer. (b) (i) 100 °C (ii) Heat supplied by metal block = heat gained by the water // m 1 c1 θ 1 = m 2 c2 θ 2 0.25 x 900 x (100 – θ) = 0.5 x 4200 (θ -29) θ = 27.74 °C (iii) No heat loss to the surrounding (c) Aspect Explanation Large numbers of fin blade Increase surface area // release heat quickly // engine cools quickly Big size of fan Can suck more air // more air can be blow to the engine High boiling point Not easily to vaporize // the volume of liquid reduce slowly // takes a longer time to boil High specific heat capacity Takes a longer time to become hot // the rise in temperature is slow S is chosen Large numbers of fin blade,big size of fan, high boiling point, high specific heat capacity

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10 20

1 1 1 1 1 1 1 1 1 1

10 Total 20

MOZ@C 12. (a) (b)

(c)

(d) (i)

Depth // density //g

1

-Pressure increased with height -Pressure in IV bottle is greater than the patient’s vein -Medicine flowing from IV bottle because height produced difference in pressure// Medicine flow from higher pressure to lower pressure - gravitational pull // weight of liquid Choices Explanation Made of concrete Stronger / Not easy to break // metal can rust easily low density lighter / the structure that hold the tank able to withstand the weight of tank thicker wall at the bottom // able to withstand the higher Diagram pressure at the bottom

1 1 1

height from ground is high

to produce a greater difference in pressure

R is chosen

Made of concrete, low density, thicker wall at the bottom, height from ground is high

-Atmospheric pressure at both side is equal -Pressure does not depends on size of arm

(ii) Patm + h1y g = P atm + h2 x g ( 10 x 10 -2 ) ( 1 200 ) ( 10 ) = ( 16 x10 -2 ) ( x ) ( 10 ) x = 750 kgm-3

1

10 1 1 1 1 1 Total 20

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MOZ@C PAPER 3 Question 1 Mark 1

Section 1 (a)(i) 1

1

1 (ii)

1 7

1 (iii) (b)(i)

(ii)

Answer State the manipulated variable correctly Volume State the responding variable correctly Pressure State the constant variable correctly Temperature // mass Record the reading in the space provide don page 3 1 All 5 values of P are correct 2 the values of P are consistent. Tabulate the results correctly and P shown in the table give one 

1

Quantities of V,

2 3

State the units of Vcorrectly. give one  The values of P is consistent to one decimal places, constant to 3 decimal place. give one 

place is

4& 5 All 5 values of

/ cm-3 correct- give two 

If 3 /4 values are correct give one  If < 3 , 0  Volume,V, cm3

35 30 25 20 15

/ cm-3

Pressure,P/ Pa

0.029 0.033 0.040 0.050 0.067

1.0 x 105 1.2 x 105 1.4 x 105 1.8 x 105 2.3 x 105

Full marks : 7 5

(c)

(b)

5

Draw a complete graph of P against

Tick  based on the following aspects;.

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1 V

MOZ@C

1

 P on the –y axis and

2



1 on the –x axis V

give 

Both axes are marked with uiniform scale And not odd scale ( 1,2, 4,5,10)

give 

3



4

 Best fitted straight line is drawn give  (berdasarkan keseimbangan bilangan titik di atas dan di bawah garisan i.i sama banyak, /2:1 /3 :2. T . Titik paling jauh dari garisan tidak lebih 0.5 cm)

All five points are plotted corectly (+/- 1 mm/ ½ square box) give  ( Only three points plotted correcly , give )

Reject : curve line  Show the minimum size of graph at least 5(vertical) x 4(horizontal) square box (2 cm x 2 cm) (Dikira dari asalan hingga titik akhir jika mula dari asalan. Jika tidak mula dari 0 , tengok titik pertama dan terakhir) Beri  score : 5

Number of  7 5-6  3-4  2 1

Score 5 4 3 2 1

Total maks : 5 marks 1

(d)

(c)

1

State the correct relationship between P and

P inversely proportional to V 16 marks

SMS MUZAFFAR SYAH , MELAKA

1 V

MOZ@C Question 2 Section

Mark

(a) (i) 1

Answer

State the change increases

1

State the value of F (a) (ii)

(a) (iii)

1 1

-shows graph extrapolation 0.4 N(reject without unit)

1

Show on the graph the corresponding value of 1.8N in the graph ,

= 0.35

1

t2 

1 0.35

1

t = 1.69 s Calculate the gradient of the graph, h and state the value of h with the acceptable range -Draw a sufficiently large triangle to calculate the gradient of the graph. -Correct substitution (follow candidate’s triangle)

(b)(i )

1

Ft 2  1

2.40  0.80 0.50  0.10

2

3

3

-State value of the gradient with correct unit. 1 b ( ii )

4.0 Ns2 Correct substitution to the formula

gradient 4 4 m  4

m 1

(c) 1

2

1.0 Ns2 State one precaution Eyes is perpendicular to the scale of reading as to avoid parallax error // Do repeated readings and find the average value as to increase the accuracy

1

12

Total

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MOZ@C Section B Question Soalan 3. (a)

Answer Jawapan

State a suitable inference The pressure exerted on the surface depends on the area of contact. State a relevant hypothesis (b) When the area decrease, the pressure increases State the aim of experiment To investigate the relationship between the area of contact and (c) (i) pressure (depth of hole). State the suitable manipulated variables and responding variable (Quantity (ii) that can be measured) Manipulated variable : Area of contact object. Responding variable : pressure exerted (depth of hole) State the constant variable Force applied (using 1 kg load) (iii) State the complete list of apparatus and materials Vernier caliper, soft plasticine, ruler, Load 1 kg, the object with different surface area but same weight.

Marks Markah 1 1 1

1

1 1

(iv) Draw the functional arrangement of the apparatus

1

State the method to control the manipulated variable Measure the bottom area of the wooden block with vernier caliper/ruler, A1 cm2. Place the wooden block on the plasticine. Place the 1 kg load on the top of the wooden block. State the method to measure the responding variable Remove the load and wooden block. Measure the depth of hole using vernier caliper and record it. Repeat the experiment at least 4 times with the values Procedure 2 and Procedure 3 are repeated using A2,A3,A4,and A5 (v) (Note : Based on SPM standard , at least five manipulated values required.)

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1

1

1

MOZ@C State how the data tabulated with the title MV and RV Area of contact/ cm2

Depth,x /mm 1

A1 A2 A3 A4 A5 State how the data is analysed, plot a graph RV against MV Depth,x/mm

1

Area of contact,A/ cm2

TOTAL

Question Soalan 4. (a) (b)

(c) (i)

Answer Jawapan

12

Marks Markah

State a suitable inference Acceleration is influenced by the mass

1

State a relevant hypothesis When the mass increased, the acceleration will be decreased.

1

State the aim of experiment To investigate the relationship between the acceleration and the mass. (ii) State the suitable manipulated variables and responding variable (Quantity that can be measured) Manipulatd variable : mass Responding variable : acceleration State the constant variable Force applied

State the complete list of apparatus and materials 5 Trolleys, ticker timer, ticker tape, a rubber band, a wooden runway, 12 V a.c power supply, ruler. (iv) Draw the functional arrangement of the apparatus

(iii)

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1

1

1 1

MOZ@C Trolley

rubber band

Ticker Timer Ticker tape Friction compensated runway 1 Power supply State the method to control the manipulated variable (v) The apparatus is set up as shown in the diagram. The ticker-timer is switched on and a trolley (of 1 kg) is pulled using a rubber band. The extension of the rubber band is ensured to be of the same length State the method to measure the responding variable Acceleration of the trolley is calculated using the ticker-tape. a = ( v-u ) / t

1

1

Repeat the experiment at least 4 times with the values Procedure 2 and Procedure 3 are repeated using 2, 3, 4 and 5 trolleys. (Note : Based on SPM standard , at least five manipulated values required.)

State how the data tabulated with the title MV and RV Mass / num. of trolley acceleration / cm s-2 1 2 3 4 5

1

1

State how the data is analysed, plot a graph RV against MV acceleration / cm s-2 1

Mass / num. of trolley

Total

SMS MUZAFFAR SYAH , MELAKA

12