skema jawapan solaf 3 sains spm 2011f.pdf

8/14/2019 Skema Jawapan SOLAF 3 Sains SPM 2011F.pdf

1/9

JABATAN PELAJARAN PERAK

SOLAF 3

SIJIL PELAJARAN MALAYSIA 2011

SCIENCE

Paper 1

andPaper 2

MARKING SCHEME

This marking scheme contains 9 printed pages

1511ScienceSOLAF 3SPM2011

SULIT


2/9

SULIT SOLAF 3

SULIT 2

Paper 1

1 B 11 C 21 B 31 D 41 C

2 B 12 A 22 C 32 A 42 B

3 A 13 A 23 C 33 D 43 C4 D 14 C 24 D 34 B 44 B

5 A 15 D 25 C 35 D 45 D

6 D 16 A 26 B 36 C 46 A

7 C 17 B 27 A 37 C 47 D

8 C 18 C 28 A 38 A 48 C

9 A 19 C 29 B 39 A 49 B

10 B 20 D 30 D 40 C 50 B


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SULIT 3

Paper 2

Question Answer Mark Marks

1

(a) 1. Metal X is the most reactive //2. Metal Y is the least reactive

(b) (i) Type of metal // Metal // Metal filling

(ii) Amount of metal // Quantity of metal // Mass of metal //Volume of metal

(c) X, Z, Y(d) Magnesium

1

11

11

Total

1

2

1

1

5

2

(a) 1. Thin convex lens produce small/short image. //

Kanta cembung nipis menghasilkan imej yangkecil/pendek2. Lens X produce small / short image.//

Kanta X menghasilkan imej yang kecil / pendek3. Thick convex lens produce large/ long image. //

Kanta cembung tebal menghasilkan imej yang besar/panjang

4. Lens Y produce large/long image.//Kanta Y menghasilkan imej yang besar/panjang

(b) 1. Thin lens has a longer focal length.Kanta nipis mempunyai jarak fokus yang panjang

2. Thick lens has a shorter focal length.Kanta tebal mempunyai jarak fokus yang pendek

3. The size of image increase due to shorter focal length.Saiz imej bertambah disebabkan jarak fokus yang pendek

(c) (i) 1. Size of object. Saiz objek2. Distance between object and convex lens.

Jarak antara objek dan kanta cembung.

(ii) 1. Size of image Saiz imej2. Height of image. Tinggi imej

(d)

1

1

1

1

1

Total

1

1

2

1

5


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SULIT SOLAF 3

SULIT 4

3

(a)

(b) 9

(c) 1. The higher the temperature, the higher the number of bacterialcolonies. //

2. The lower the temperature, the lower the number of bacterial

colonies.(d) Higher temperature will kill/destroy the bacteria //Bacteria are not active at lower temperature.

1

1

1

1

1

Total

2

1

1

1

5

4

(a) Day 2 to day 4 1 1


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SULIT 5

(b)

(c) When the time increases, the height of the seedling increases.(d) 36//37//38//39//40 // Any number from 35 to 40

1

1

11

Total

2

1

1

5

5

(a) Discontinuous variation(b) Genetic factor(c) 1. Colour of eye

2. Thumb prints3. Tongue rolling4. Blood groups5. Sex6. Left handed or right handed

[Any two](d) Tt, Tt, Tt, Tt

(e) Free ear lobes

11

1

1

1

1

Total

1

1

2

1

1

6

6

(a) Energy K : Nuclear energy // Heat energy

Ray M : Radioactive ray // Alpha ray // Beta ray //Gamma ray // // //

(b) (i) To generate electricity // To make nuclear bomb.

1

1

1

1

1

1

2 4 6 8 10 1200

10

20

30

40

50

60

Time/dayMasa/hari

Height of seedling/cmKetinggian anak benih/cm

x

x

x

x

x


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(ii) 1.To sterilize medical equipment.//2.To detect the damage of tyroid gland. //3.To treat cancer // To kill cancer cell.//4.To detect brain tumor.//

5.To detect liver activity.//6.To detect blood clotting in blood vessel.

(c) Using Geiger Muller counter // Using GM counter //Using photographic badge.

(d) Mutation // Cancer // Dead // Skin cancer

1

1

1

Total

1

1

1

6

7

(a) Y: KernelZ : Mesocarp // Husk

(b) Z // Husk // Mesocarp

(c) Extraction

(d) 1. Rich of vitamin A //2. Rich of vitamin E //3. Less cholesterol //4. Contain beta carotence5. Contain anti oxidant

(e)

111

1

1

1

Total

2

1

1

1

6

8

(a) J : DehydrationK : CanningL : Pasteurisation

(b) Water is removed from the food.(c) To kill the microorganisms in the food(d) 63 C

111111

Total

3

1

1

1

6


7/9

SULIT SOLAF 3

SULIT 7

9

(a)

Type of satelliteJenis satelit

(i) Type of waveused

Jenis gelombang

digunakan

Microwaves Microwaves

(ii)One uses ofsatelliteSatu kegunaan

satelit

1. Forecast the

weather.

2. Track air

pollution.

1. Outdoor positioning.

2. Track movement of

vehicles.

(b) 1. Global coverage2. Faster installation3. Borderless communication4. Speedy transmission5. Simultaneous transmission

[ Any two]

2

2

2

Total

4

2

6

10

(a) Hypothesis:1. The presence of salt increases the boiling point of pure water.//2. Impurities will increase the boiling point of pure water.

(b) (i) Aim:1. To study the effect of impurities on the boiling point of a pure

water.

(ii) Variables :1. Manipulated : The presence of impurities / table salt2. Responding : Boiling point (of distilled water / mixture)3. Fixed : Volume of distilled water

(any 2)(iii) Apparatus:

1. Distilled water2. Table salt

1

1

1

1

1

1

2 (max)


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3. Beaker

4. Wire gauze5. Tripod stand,6. Bunsen burner7. Thermometer

(iv) Procedure :1. 50 cm3 of distilled water is poured into a beaker.2. The distilled water is heated up until it boils.3. The boiling point of the distilled water is recorded by using

thermometer.4. The experiment is repeated using the mixture of distilled water

and two spatulas of table salt.

OR: Suitable and correct diagram(v) Result :

The presence of impurities Boiling point of mixture / oC

Without salt

With salt

1

111

1

1

Total

1

4

1

10

11

(a) (i) The arrangement of particles in copper and bronze.

(ii) 1. Layers of copper atoms can slide over one another when

sheared.2. Tin atoms in bronze prevent copper atoms from sliding easily

over one another.

(b) Common characteristics:

1. Alloys are made up of two or more elements.2. Alloys are harder than pure metal.3. Alloys are more resistance to corrosion.4. Alloys are more attractive.

Another example of an alloy:1. Steel2. Duralumin3. Cupronickel

1

1

1

1

1

1

1

2

2

2

1

copper

Copper atomCopper atom

Tin atom

bronze


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SULIT SOLAF 3

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Example of a non-allaoy:Any pure metal

e.g: iron/ aluminium/ zink/ carbon

Reason:1. It is made up of one element. // Any characteristics of pure metal

The concept of alloy:e.g: An alloy is made up of two or more elements and it is harder

than pure metals.

1

1

1

Total

2

1

10

12

(a)

Type of plastic Example

ThermoplasticsPolyvinyl chloride (PVC) / nylon /polythene / perspex / polystyrene /polypropene

Thermosets Bakelite / melamine / epoxy glue /

(b) Identify the problem:Environmental pollution

Clarification of the problem:Improper disposal of plastics wastes.

Methods to overcome the problem:1. Recycling the plastics2. Reuse the plastics3. Burning the plastics in incinerators.4. Bury the plastics in the ground.5. Use biodegradable plastics.

[Any three methods]

Best method and reason:e.g: Method: Burning the plastics in incinerators.

Reason: Prevent the release of carbon dioxide or poisonousgases.

[Any one method with correct reason]

2

2

1

1

111

1

Total

4

1

1

3

1

10

skema jawapan solaf 3 sains spm 2011f.pdf

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