SCIENCE UPSRKEDAH 2012

1 D 11 A 21 B

2 B 12 D 22 C

3 A 13 C 23 B

4 B 14 C 24 A

5 D 15 B 25 A

6 B 16 C 26 D

7 C 17 A 27 A

8 C 18 A 28 C

9 A 19 C 29 D

10 D 20 D 30 D

200200 200

400 400400

X = 200 g Y = 150 g Z = 300 g

J K

Nail, key,

paperclip

Tissue, thread, towel

Non-absorbent Absorbent

Number of ice cubes

0 2

Temperature of water

82 74

6

58

+ 2 + 2

+ 2

- 8 - 8

- 8

4

66

BEFORE EXPERIMENT

AFTER EXPERIMENT

Balloon deflates Balloon inflates

WHAT TO CHANGE? Presence / absence of hot water

WHAT TO OBSERVE? Effect of heat on matter

Conclusion:The air in the balloon inflates, when heated

No comparison

TYPE OF SURFACE

TIME TAKEN FOR TOY CAR REACHED THE FINISHING LINE

GLASS 18CEMENT 24

SANDPAPER 30

WHAT TO CHANGE? TYPE of surface

WHAT TO OBSERVE? TIME TAKEN for toy car reached the finishing line

Conclusion:The rougher type of surface, the longest time taken for toy car reached the finishing line.

With comparison

SM

OO

TH

SMOOTH

ROUGH LONGEST

SHORTEST

i) S = NEW CRESCENT

ii) Q = NEW GIBBOUS

iii) R = FULL MOON

iv) P = HALF MOON

MARBLE TIME TAKEN

P 2 s

Q 5 s

DISTANCE

10 cm

10 cm

SPEED

= DISTANCETIME

= 10 cm2 s

= 5 cm/s

= 10 cm5 s

= 2 cm/s

DIFFERENT SPEED = 5 cm/s – 2 cm/s= 3 cm/s

CONTAINER INITIAL VOLUME OF WATER

VOLUME OF WATER AFTER 2 HOURS

R 50 30S 50 35T 50 40

WHAT TO CHANGE? EXPOSED SURFACE AREA of container

WHAT TO OBSERVE? RATE of evaporation

Conclusion:The bigger exposed surface area of container,the fastest rate of evaporation.

With comparison

BIGGER

SMALLERSLOWEST

FASTEST

Planets

= b

igge

st

Mer

cury

Ven

usEar

thM

ars

Jupi

ter

Satu

rn

Ura

nus

Nep

tune

Ceres

DwarfPlanets

Plut

oH

aum

eaM

akem

ake

Eris

= th

e Su

n he

at tr

appe

d in

atm

osph

ere

= fr

ozen

wat

er

= h

otte

st pl

anet

/clo

sest

to th

e Sun

= th

e su

itabl

e te

mpe

ratu

re

=th

ree

wid

e rin

gs

=bl

ue o

cean

of l

iqui

d m

etha

ne

=ly

ing

on it

s sid

e

SECTION B

GRAPH

TABLEDIAGRAM

STATEMENT

OBSERVATION

INFERENCE

RELATIONSHIP / CONCLUSION

WHAT TO CHANGE

WHAT TO OBSERVE

WHAT KEEP THE SAME

AIM / PURPOSE

TREND / PATTERN

PREDICTION

KEY WORD

OBSERVATION

State what you see in the picture / table / graph• What can you say• What can you observe

INFERENCE

Explain your observation.Give reason based on your observation.

TYPE OF PLANT

CONDITION OF PLANT

X WiltedY Still fresh

WHAT TO CHANGE? TYPE of plant

WHAT TO OBSERVE? CONDITION for plant

INFERENCE:Plant X wilted because it stem cannot store water, while Plant Y still fresh because it have thick stem to store water.

WC WO

INFERENCE:Plant X wilted because Hibiscus has a large number of leaves for transpiration activity, while Plant Y still fresh because cactus has needle shaped leaves so that less water is lost from it.

or

What have you observe from the diagram?

1. (b) Observation:

Plant X wilted while Plant Y still fresh.

PLANT Y

Has needle shaped leaves

Less transpiration trough needle shaped leaves, so less water is lost

Needle shaped leaves to avoid being eaten by animals

REASON

Fine needle shaped leaves to prevent excessive loss of water

CONTROLLING VARIABLES

The things you select in a fair test / experiment.

What to change? (Manipulated Variables)

Answer Key

Parameter Object+

Type the plantof

Parameter ObjectsVolume of water

Size of sponge

Number of brick

Distance of toy car

Temperature of water

Type of soil

Except:

(Time, Day, Week, Month and Year)

Number of .......

BOX WEIGHT OF LOAD

DIFFICULTY LEVEL OF FORCE USED TO PULL THE LOAD

J 10 kg Easy to pull

K 50 kg Difficult to pull

WHAT TO CHANGE? WEIGHT OF load

WHAT TO OBSERVE? DIFFICULTY LEVEL OF force used to pull the load

WHAT KEEP THE SAME? TYPE OF surface

2. (a) INFERENCE / reason:

Box J easy to pull because less force is needed to move the load than Box K.

Or

Box K difficult to pull because more force is needed to move the load than Box J

2. (b)

Observation – to support the reason (inference) in 2 (a):

Box J is easy to pull.

Or

Box K is difficult to pull.

1. (c) . Relationship

As { what to change} increase / decrease,

the{what to measure} increase/ decrease

As the weight of load increase, the difficulty level of force used to pull the load increase too.

As the more bigger weight of load, the amount of force used to move the load is bigger too.

1. (c) . Relationship / hypotheses

As { the roughness of surface} rougher/smoother, the {amount of friction} increase/decrease

When the more rougher the roughness of surface, the amount of friction will increase

The amount of friction depends on

the roughness of surfaceW

C

WO

PREDICTION

Using the data / from past experienceState what will happen next

Answer Key

Study the trend / pattern changes Predict the number eg 6 month…

Predict the situation – food preservation eg It will last longer

Period for the fish to last longer

(month)

30 60 90 120 Quantity of salt (g)

3. (a). Predict: for the fish last longer -> if 105 g salt is used

7 month.

Predict the number

8 –

6 –

4 –

2 –

3. (b) . Relationship / hypotheses

As the more quantity of salt used, the period for the fish to last longer will increases.

When the quantity of salt used increases, so the period for the fish to last longer will increases too.

The period for the fish to last longer

the quantity of saltW

C

WO

3. (c) . Information

The period for the fish to last longer

The quantity of saltW

C

WO

Period for the fish to last longer

(month)

30 60 90 120 Quantity of salt (g)

Increases.8 –

6 –

4 –

2 –

3. (d) TREND / PATTERN

Increase : From small getting bigger or larger From lower became higher

Decrease: From bigger/larger getting smaller From higher getting lower

Constant : Did not change / unchanged

X30’C

Y25’C

12:00 noon

12:00 mid night

The temperature of town

The location of investigationW

C

WO

4a Reason / Inference:

Temperature at Town X is higher than Town Y because Town X is facing the Sun while Town Y does not facing the Sun.

4b To investigate the relationship between the location of investigation with the temperature of town X and Y.

4c 25’c

4 d Conclusion:The nearer the location of investigation to the sunlight, the higher temperature of the town.

WO

WC

Question 5:

TYPE OF MATERIALS NUMBER OF DAMAGED HOUSE

Clay 200

Wooden 150

Concrete 100

Steel 50

Question 5:

5a WS:

Place of investigation

5b WO:

Number of damaged houses

5c To investigate the relationship between the types of houses material with the number of damaged houses.

5 d

TYPE OF MATERIALS

NUMBER OF DAMAGED HOUSE

Clay 200

Wooden 150

Concrete 100

Steel 50

KEKUATAN CALON UPSR

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SOALAN BHG.A DAN BHG.B

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• KETELITIAN ANDA ADALAH PENTING BAGI MENGELAKKAN KESILAPAN2. KERANA KESILAPAN YANG ANDA LAKUKAN ADALAH SATU PENGANIAYAAN UNTUK :I. DIRI ANDAII. IBU BAPA ANDAIII. GURU ANDAIV. SEKOLAH