Pmr Trial 2010 Science Qa Kedah

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PEPERIKSAAN PERCUBAAN NEGERI KEDAH SKEMA JAWAPAN SAINS PMR KERTAS 1 2010 Sub Topik Q A F1 1.2 2.1 3.4 4.2 5.1 5.2 6.1 7.2 7.3 7.5 F2 8.8 9.1 9.3 10.1 11.2 11.3 12.2 12.4 12.5 13.1 13.2 14.2 14.5 15.1 16.1 17.1 17.2 F3 18.1 19.1 19.3 20.2 21.4 21.1 23.5 22.1 24.3 24.8 25.6 26.2 Steps in scienctific investigation Cells The use of properties of matter in everyday life Elements, compounds and mixtures The composition of air The properties of oxygen and carbon dioxide The various forms and sources of energy Heat flow and its effect The effect of heat on matter Absorbing and giving out heat Sound and hearing Classes of food Digestive system in human Organisms and their classification Interdependence among living organisms Food web Composition of water Solution and solubility Acid and alkali Air pressure Application of the principle of air pressure Measurement of force Application of power Support systems in animals Stability Levers Appreciating the innovative efforts in the design of machines to simplify work 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 B A C A D B A B A B B B C A B C D D A D B D A A D C C

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S 1

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Rajah Jadual

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 19 13 8

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

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

Human breathing mechanism Transport system in humans Transport system in plants Human urinary system The menstrual cycle Understanding Sexual and Asexual Reproduction Natural fuel resources and their importance The pattern of human growth Measuring electricity Magnetism Functions of fuse and earth wire The stars and the galaxies in the Universe Developments in the field of astronomy and space 27.1 exploration

28 29 30 31 32 33 34 35 36 37 38 39 40

B D C C D C C B D C D B A

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55/2 SCIENCE PMR Ogos 2010

PEPERIKSAAN PERCUBAAN PENILAIAN MENENGAH RENDAH 2010

SCIENCE KERTAS 2 PERATURAN PEMARKAHAN

UNTUK KEGUNAAN PEMERIKSA SAHAJA

Peraturan pemarkahan ini mengandungi 14 halaman bercetak

2

No. 1(a)

Marking Scheme Able to label parts P, Q, and R correctly Answer P : Prominence Q : Sunspot R : Solar flares

Sub Marks

Total Mark

1 1 1

3

(b)

Able to match the phenomenon correctly. Answer Neutron star Bintang neutron Black hole Lohong hitam White dwarf Kerdil putih 1 1 1 3

Y

Z

X

Total

6

3No. 2 (a) ( i ) Able to state the method. Marking Scheme Sub Marks Total Marks

AnswerWater displacement ( ii ) Able to determine the volume of stone

1

1

Answer1 27 ml/cm3 [ without calculation ] unit must be written 1

2

Able to determine the volume of cork

Answer3 ml/cm3 [ without calculation ] unit must be written 1 2

(b) (i) Able to name apparatus P correctly.

AnswerP external calipers ( ii ) 1

Able to determine the thickness of boiling tubes wall correctly

Answer(3.0 cm - 2.5 cm) = 0.25 cm unit cm must be written 1 2

2

4

No.

Marking Scheme

Sub Marks

Total

(c)

Able to choose the suitable apparatus correctly.

Answer

Thread Benang

RulerPembaris 1 1

Total

6

No. 3 (a) ( i)

Marking Scheme

Marks

Total

Able to name substance L correctly.

AnswerMetal/iron/copper/ any example of metals.

1

( ii )

Able to make conclusion based on their properties.

AnswerCopper/L is metal which conducts electricity while sulphur/K is non metal which does not conduct electricity.

1

2

5No. 3 (b) Able to choose the correct sequence correctly ( i) Answer Mark Scheme Marks Total

4

3

2Salt ,sand and water Garam , pasir dan air(b)

1Mixture of sand , iron filings and salt Campuran pasir, serbuk besi dan garam

Magnet

Note:

4 correct , award 2 marks 3 correct, award 1 mark 2 or 1 correct, award 0 mark

2

2

6No. 3 (c) ( i) Marking Scheme Marks Total

Able to give correct observation.

AnswerIron filings are attracted to the magnet but sulphur powder is not attracted to the magnet. [ accept any suitable answer ] ( ii ) 1

Able to state the properties correctly

AnswerThe product cannot be separated by physical method // The product can be separated by chemical method. [ accept any suitable answer ] 1 2

Total

6

No. 4 (a)

Marking Scheme

Marks

Total

Able to arrange the sequence correctly

Answer1 R ,Q, and P (b ) Able to name the solution correctly 1

AnswerDilute solution 1 1

7

(c )

Able to give two factors that affect the rate of dissolving correctly

Answer1. The volume of solvent/water 2. The temperature of solvent/water 3. Size of solute/sugar 4. Rate of stirring (d ) 1+1 2

Able to give the suggestion

Sample Answer(i) Increase the volume of solvent /(distilled) water into beaker R//add more water Add more (distilled) water to beaker R, so the density of solution will be reduced and the egg will sink. 1 1

(ii)

1

1

Total

6

8No. 5 (a) (i) Mark Scheme Marks Total

Able to draw the curve correctly Answer

1

1

(ii)

Able to state the growth pattern Answer Infancy: Rapid growth Adulthood: Minimal growth 1+1 2

(b)(i)

Able to make conclusion based on the graph at the age range 13 to 15 Answer The growth rate of girl is higher than boy. 1 1

(ii)

Able to explain the factor that make the difference growth rate between the girls and boys Answer: A girl reaches puberty earlier than boy. 1 1

(iii)

Able to state the age that the girl reaches height of 140 cm Answer: 13 years old 1 1

9(c)(i) Able to name the disease Answer: Kwashiorkor (spelling must correct) (ii) Able to name the class of food Answer: Protein (reject any example of proteins) Total 1 1 8 1 1

No. 6(a)(i)

Marking Scheme Able to draw electric circuit . Sample Answer

Marks

Total

1+1

2

R

S (ii) Able to state the way ammeter and voltmeter are connected. Sample Answer In circuit R, ammeter is connected in series, while in circuit S, voltmeter is connected in parallel. (b)(i)

1

1

Able to state the relationship between V, V1, and V2. Sample Answer V= V1=V2 // voltage V is equal to V1 and V2.

1

1

10(ii) Able to state the relationship between I, I1, and I2. Sample Answer I= I1 + I2 // The current I is equal to the sum of I1 and I2.

1

1

(iii)

Able to state the relationship between R, R1, and R2. Sample Answer

=(c)(i)

+

1

1

Able to state the difference in brightness of the bulb P in Circuit 1 and Circuit 2. Answer Bulb P in Circuit 2 is brighter than Circuit 1 // Bulb P in Circuit 1 less brighter or dimmer than Circuit 2.

1

1

(ii)

Able to give one reason for the answer in (c)(i). Answer Bulb P in Circuit 2 is arranged in parallel so it receives (more current) / (higher voltage) or

1Bulb P in Circuit 1 is arranged in series so it receives (less current) / (less voltage ) *Note: Bulb P in Circuit 2 is arranged in parallel. Wrong!

1

(accept: Bulb P in circuit 2 receives more current/higher voltage)

Total

8

11No. 7 (a) Marking Scheme Able to state the support system Answer J : K : L : M: (b) Thorn Tendril Thorn Twinning stem 1 1 1 1 4 Marks Total

Able to classify Sample answer

1.

J, K, L , M

with thorn

without thorn

2

J, L

K, M2

4

2.

J, K, L , M

With tendril

without tendril

K

J, L, M

12

3

J, K, L , M

With twinning stem

Without twinning stem

M

J , K, L

(c)(i)

Able to state the condition of aquatic plant Answer Plant in situation B stands upright but plant in situation A cannot stand upright 1 1

(ii)

Able to state the inference Answer The plant stands upright because of water buoyancy 1 1

Total

10

13No. 8(a) Marking Scheme Able to make inference based on diagram 8.1. Sample Answer 1 In the presence of light, the water weed carries out photosynthesis. 2 In the presence of light, the water weed releases oxygen. 3 Water weed needs light to carry out photosynthesis. 4 During photosynthesis, oxygen is released. [Accept any reasonable answer] (b) Able to record the volume of oxygen. Answer Distance = 20 cm ; Distance = 30 cm ; Volume = 0.4 cm3 Volume = 0.2 cm3 Sub Marks Total

1

1

(i) (ii)

1 1

1 1

(iii)

Able to draw a line graph Answer

1+1

2

Note: 3 correct points - 1 mark Straight line - 1 mark

14Able to state the relationship between volume of oxygen and distance of bulb. Answer The farther the distance, the lesser the volume // The closer the bulb, the higher the volume // Indirectly proportional. Able to state the responding variable; Answer The rate of photosynthesis // The volume of oxygen

(c)

1

1

(d)

1(e) Able to state one constant variable. Answer Type of bulb/lamp or Type/size of the plant. or the size of the gas jar. Able to predict based on the graph drawn. Answer 0.3 cm3 (the value same as shown in the graph. Not by calculation.)

1

1

1

(f)

1

1

(g)

Able to give de