Pmr Trial 2012 Science a Pahang

55/1

55/1 OTI2MIDY07F3SN55P1J

SUGGESTED MARKING SCHEME SCIENCE PMR 2012 PAPER ONE (55/1)

FORM THREE

QUESTION NO. ANSWER QUESTION

NO. ANSWER

1 D 21 D 2 B 22 D 3 C 23 C 4 D 24 B 5 C 25 B 6 D 26 D 7 D 27 A 8 B 28 D 9 B 29 B

10 A 30 D 11 D 31 A 12 B 32 C 13 C 33 C 14 A 34 C 15 A 35 D 16 D 36 C 17 C 37 B 18 B 38 A 19 D 39 D 20 D 40 D

http://www.chngtuition.blogspot.com

NO Marking Scheme

Mark

1 (a)

X medulla Y cortex

1 1

(b)

Bean shape 1

(c)

3

TOTAL 6 2 (a)

Crab : Exoskeleton Fish : Endoskeleton Starfish: Hydrostatic Skeleton

1 1 1

(b)

Because the whale get support by the buoyancy of the water

1

Ureter Ureter

Removes urine from the body Menyingkirkan air kencing dari badan

Stores urine temporarily Menyimpan air kencing untuk sementara

Urethra Uretra

Urinary Bladder Pundi Kencing

Carries urine to the urinary bladder Membawa air kencing ke pundi kencing

SKEMA SAINS KERTAS 2 PERCUBAAN PMR 2012


(c)

i Mantain the shape of the body ii protect the internal organ iii enable body to move Any 2

2

TOTAL 6 3(a)

P Flowering plant Q Conifer/ moss/ferns/alage/fungi

1 1

(b)

Monocotyledon has fibrous root, dicotyledon has tap root

1

(c)

Draw parallel vein for sugarcane Draw network vein for manggo tree

1 1

(d)

as a natural heritage/ supply raw materials/for tourism/provide food /provide oxygen

1

TOTAL 6 4(a)i ii

The lining of uterus wall fall down Prepares for the implantation of the embryo

1 1

(b)

On the 6 of June

1

(c)i ii iii

Fertilization Fallopion tiub Embrio Feotus

1 1 1

(d)

Ovaries unable to produce egg cell/ fallopion tube blocked/embryo cannot attach itself to the uterus wall/abnormal menstrual cycle/premature release of the egg cell

1

TOTAL 7


5(a)i ii

Wooden block less denser than water Iron block

1 1

(b)

1 1 1

(c)

Iceberg is less denser than the sea water

1

(d)

The water level must be half or more than half

1

(e)

Use oil because oil is less denser than water (and it prevent oxygen)

1

TOTAL 8

R

Q

P

S


6 (a) Activity Q Because the trolly move at certain distance(any reasonnable answer involve change in distance)

1 1

(b) i ii

Power = Time

work done

= 8

(50x10) x 1.3

= 81.25 waat Less power

1 1 1

(c)i ii

Situation Q Because its have to againts the gravitional force

1 1

TOTAL 7 7 (a) i ii

Q = 20 V R = 8 V When the number of turns in secondary coil increase the output voltage increase

1 1 1

(b)

The voltage output increase because the number of turn in secondary coil increase

1

(c)

P = 17.6 V

1

(d) i ii

7.2 (a) More bright 7.2 (b) Less bright When the number of turns in secondary coil increase the brightness of the bulb increase

1 1 1

(e)

classification transformer

Step up transformer P Step down transfomer R,S,Q

1 1

TOTAL 10


END OF THE PAGE

8(a)i ii iii

Boy A feel more hot than boy B Boy A feel more hot because he wear black shirt( which absorb more heat) Black shirt/colour more hot than white shirt/colour (vise versa) / black shirt/colour absorb heat better than white shirt/ colour

1 1 1

(b)

Surface Temperature

Black paint 75 Aliminium paint 55

1 1

(c)

Transfer 2 point Draw bar cart with same wide

1 1

(d)

Manipulated variable Type of surface Responding variable Reading of thermometer

1 1

(e)

Absorption of heat is the reading of thermometer

1

TOTAL 10


Pmr Trial 2012 Science a Pahang

Documents

Transcript of Pmr Trial 2012 Science a Pahang