skema jawapan science paper 2 percubaan selaras perak 2010

8/9/2019 Skema Jawapan Science Paper 2 Percubaan Selaras Perak 2010

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MARKING SCHEME SCIENCE PMR

TRIAL EXAMINATION

No. Marking Scheme Mark

SECTION A/ BAHAGIAN A

1 (a) ( i) R

Reject more than one tick

1

(a) ( ii) Probe and satellite

2 correct = 2m

1 correct 1 wrong = 1m

2 correct 1 wrong = 1m

2 correct 2 wrong = 0 m

2

(b)

3

Total=6

2

(a) Hearing 1

(b) ( i) (Ear) ossicles 1

(b) ( ii) Magnify the (sound) vibration

1

(c) ( i) Becomes softer /fainter (until no sound is heard)

1

(c ) ( ii) Becomes louder

1

(c) ( iii) Sound cannot travel through vacuum //

Sound can only travel through a medium //

Sound needs medium to travel

1

Total = 6

Sunspot /

Tompok

matahari

Prominence

Prominen

Solar flare/

Nyalaan

suria

X

Y

Z


2/5

3

(a) ( i)

4 correct = 2 marks

2 or 3 correct = 1 mark

1 correct = 0 mark

2

(a) ( ii) L / water 1

(a) ( iii) 0.84 0.86 1

(b)

P1 - Ship has big air space

P2 - Reduce the density of ship

P3 - (Causes) the ship less dense than water

ANY TWO

2

Total = 6

4

(a) Present of /Kehadiran

Beginning ofthe

experiment /Awal

eksperimen

End of theexperiment /

Akhireksperimen

Starch / Kanji X XGlucose /

Glukosa

X /

4 correct = 2 marks2 or 3 correct = 1 mark

1 correct = 0 mark

2

(b) (Salivary) amylase 1

(c) )( i) Illeum / Small intestine 1

(c) ( ii)

P1 = Has villi

E1 = Increase surface area for absorption

P2 = Villi have many blood capillaries

E2 = To transport absorbed nutrien t/ digested food 2

X

L

K

M

J


3/5

P3 = very long

E3 = increase surface area / time for absoption

Any 1 pair (P + E)

Total = 6

5

(a)

3 correct = 2 marks

2 correct = 1 mark

1 correct = 0 mark

2

(b)

1

(c) P1 = Brighter

P2 = Higher voltage supply //

P3 = Higher current flow

P1 + P2 or P3

1

1

(d) Y 1

(e)

= 0.3 (A)

If only answer given = 1m

1

1

Chemical

energy

Heat energy Light energy

Y

X

+ -

Electrical

energy

I =V

R

I =3.0V

10


4/5

If no unit given is accepted

Wrong unit is rejected

Total = 8

6

(a) ( i) P / Day 1 until day 5 1

(a) ( ii) Day 13/14 / 15 1

( b ) ( i) R 1

(b) ( ii) Un reliable // must have constant menstrual cycle 1

(c ) ( i) Surgery / in vitro fertilisation (IVF) 1

(c) ( ii) Hormone treatment / (IVF ) 1

(d)

P1 = Yes

E1 = Prevent unwanted pregnancy // Help to plan family

size //

Family economy// for the mother,s health

P2 = No

E2 = Misused // Encourage free sex // Lead to grey society

(Any one pair P and E)

2

Total = 8

SECTION B/ BAHAGIAN B

7

(a) ( 1) P = (Bulb) lights up

Q = (Bulb) lights up

R = (Bulb )does notlights up

S = (Bulb) lights up

4

(a) ( ii) Bulb light up because P, Q and S / P / Q / S is electrical

conductor / can conduct electric //

Bulb does not light up because R is nor electrical conductor /

cannot conduct electric

1


5/5

(b) If (the substance used is) electrical conductor, the bulb lights

up //

Vice versa //

Electrical conductor used, can light up bulb.

1

(c)

2

2

Total = 10

8

(a) ( i) Number of secondary coil 1

(a) ( ii) Reading of voltmeter // Output voltage

Reject: Voltage

1

(a)( iii) Number of primary coil // Input voltage

Reject: Voltage

(b) The higher/more the number (of turns) of secondary coil, the

higher the output voltage/ reading of voltmeter

1

(c ) ( i) 9

12

1

1

(c ) ( ii) 15 1

(d) Output voltage is the reading of the voltmeter 1

(e) All points transfered correctly

Drawing (straight line)

1

1

Total= 10

P, Q, R, S

Not Electrical

conductor// Cannot

conduct electricity

Electrical

conductor//

Can conduct

electricity

RP, Q and S

skema jawapan science paper 2 percubaan selaras perak 2010

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