skema percubaan sbp pmr 2007 p2

8/7/2019 Skema Percubaan SBP PMR 2007 p2

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PERCUBAAN PENILAIAN MENENGAH RENDAH 2007

SKEMA PEMARKAHAN

SAINS

(KERTAS 1 & KERTAS 2)

55/1 & 55/2

SEKTOR SEKOLAH BERASRAMA PENUH

KEMENTERIAN PELAJARAN MALAYSIA


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SKEMA PEMARKAHAN

SCIENCE PAPER 2 (55/2)

No. Answer Mark

1 a

2

b R : Protects the flower during the bud stage 1

c Fruit 1

d Cross-pollination 1

Total 5

2 a (i) P

(ii) T

1

1

b (Because each product has a) different boiling point. 1

c (i) Darker colour(ii) More viscous(iii) Less (ability to) burns(iv) (Produce) more soot

(choose any two)

2

d (Bitumen is used for) covering road surface. 1

Total 6

3 a (i) boiling(ii) evaporation

11

b (i) R / S / T / melting / boiling / evaporation / sublimation(ii) U / V/condensation / freezing / sublimation

1

1

c (i) sublimation(ii) iodine / dry ice / naphthalene

11

Total 6

4 a The discharge of an unfertilized egg, uterus lining and blood through the vagina 1

b An ovum is released / Ovulation 1

c 28 days 1

d Day 12 16 1

e (i) Day 15(ii) Day 30

11

Total 6

R: Sepal

Q: Ovule


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5 a A reaction between an acid and alkali to form salt and water 1

b Acid + Alkali Salt + Water

c Solution K : Hydrochloric acid // Sulphuric acid // Nitric acid

Solution L : Sodium hydroxide // Potassium hydroxide // Ammonium hydroxide

1

1

d (i) Green(ii) Acidic solution

1

1e (i) A dilute alkali is used to reduce pain caused by insect bite

(ii) Alkali in toothpaste helps to neutralise the acid around our teeth(iii) Slake lime (Calcium hydroxide) is used to neutralise acidic soil(iv) Milk of magnesia (antacid) is used to neutralised the excess acid in the

stomach*Choose any two suitable answers

2

Total 8

6 a

Cupboard R

Cupboard S

Cupboard T

* the X must be located at the top, middle and lower part of cupboard S, R and T

respectively.

3

X

X

X


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b (i) (Cupboard) T(ii) (It has the) lowest centre of gravity(iii) T S R

11

1

c (i) (It) spreads out its legs(ii) The stability is increased by increasing the base area (when the giraffe

spreads out its legs)

1

2

Total 9

7 a W has network vein leaf / tap root / fruit / tubers / flower

X - has parallel vein leaf / fibrous root / fruits / suckerY - has network vein leaf / tap root / fruits / has runner

Z - has parallel vein leaf / fibrous / flower

4

b

Suggested answers:

e.g : Answer 1 Left Right

Common characteristics Has network vein leaf Has parallel vein leaf

Name of plants Potatoe plantStrawberry plant

Banana plantWater hyacinth

e.g : Answer 2

Common characteristics Has tap root Has fibrous root

Name of plants Potatoe plantStrawberry plant

Banana plantWater hyacinth

e.g : Answer 3

Common characteristics With fruit Without fruit

Name of plants Potatoe plant

Strawberry plant

Banana plant

Water hyacinth

e.g : Answer 4Common characteristics With flower Without flower

Name of plants Water hyacinth

Potatoe plant

Strawberry plant

Banana plant

* Accept any suitable answers.

4

Total 8

8

a

Manipulated variable : The value of resistance

Responding variable : The value of current /Ammeter reading

Fixed variable : Number of dry cells / Voltage

3

b

Resistance () 1 2 5 10

Ammeter reading (A) 0.9 0.7 0.5 0.3

2


5/5

0.37

c

At least 3 points plotted correctly - 1mA smooth graph line - 1m

2

d (i) The current depends on the value of resistance

(ii) Indirectly proportional //The brightness of the bulb decreases // the bulb becomesdimmer when the resistance increases

1

e 0.37 0.01 A 1

fCurrent is the ammeter reading / reading of the ammeter 1

Total 12

END OF MARKING SCHEME

Resistance ()

0

CurrentA

0.3

0.2

0.1

0.4

0.7

0.6

0.5

0.

1 2 3 4 5 6 7 8 9 10

skema percubaan sbp pmr 2007 p2

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