Skema Trial Sains Upsr Kedah 2012
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Transcript of Skema Trial Sains Upsr Kedah 2012
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
• FOKUS• RAJIN-MENGULANG KAJI PELAJARAN!
• BERDAYA USAHA • TELITI KETIKA MENJAWAB SOALAN• MENYEMAK SEMULA
• SUBJEK SAINS SEGAR DALAM INGATAN
MINDA BAWAH SEDAR!SAINS NAK LULUS SENANG
TAPI NAK SCORE A TU YANG PAYAHNYA
NAK SCORE A,
MURID MESTI MENGUASAI TEKNIK
SOALAN BHG.A DAN BHG.B
MINDA POSITIFSAINS SENANG JE NAK LULUS
NAK SCORE A KACANG JE!
SAYA BOLEH SCORE A,
SAYA MESTI MENGUASAI TEKNIK
SOALAN BHG.A DAN BHG.B
• 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