Primary 6 Prelim Practice Paper 2020 (Set 3A)
Name: ______________________ (
)
Class: 6 ________________
48
Date: _______________________
Section A (24 x 2 = 48 marks)
For each question from 1 to 24, four options are given. One of them is the correct
answer. Make your choice (1, 2, 3 or 4).
1.
The diagrams below show two organisms found in a rotting log community.
fern
fern
mus
mushroom
Which of the following correctly shows the similarity and difference between the fern
and the mushroom?
(1)
Similarity
Both reproduce by spores.
(2)
Both make their own food.
(3)
Both reproduce by spores.
(4)
Both are non-flowering plants.
Difference
The fern bears flowers but the mushroom
does not.
The fern reproduces by seeds but the
mushroom reproduces by spores.
The fern makes its own food but the
mushroom feeds on other organisms.
The fern makes its own food but the
mushroom feeds on other organisms.
1
2.
The diagram below shows the cross-sections of flowers A, B and C.
Part X and Part Y carry out the same function.
Part Y
Part X
Flower A
Flower B
Flower C
Which one of the following statements is definitely correct?
(1)
(2)
(3)
(4)
(4)
3.
Only Flower A can be fertilised.
Flower B is pollinated by insects.
Both Flower A and Flower B can develop into fruits.
The fruits that develop from Flower A will have only one seed each.
Three children were comparing how plants and fish breathe.
Plants only
breathe during
the day when
there is light.
Fish breathe
through gills but
plants breathe
through tiny
openings on their
leaves.
Alan
Candice
Both plants and fish
take in oxygen and
give out carbon
dioxide.
Betty
Who is/are correct?
(1)
(2)
(3)
(4)
Alan only
Candice only
Betty and Candice only
Alan, Betty and Candice
2
4.
The transport systems in a land plant and human body consist of sets of tubes.
These tubes carry materials from one part of the organism to another as shown in
the diagram below.
tubes for
transporting
materials
Which of the following are carried through the transport systems in both
organisms?
A
B
C
D
(1)
(2)
(3)
(4)
Food
Water
Oxygen
Carbon dioxide
A and B only
C and D only
A, B and C only
A, B, C and D
3
5.
The diagram below shows the life cycle of a butterfly.
egg
4 days
larva
adult
2 weeks
7 – 15 days
pupa
Based on the diagram, what cannot be concluded about the life cycle of the
butterfly?
(1)
(2)
(3)
(4)
The order of stages in the life cycle
The number of stages in the life cycle
The length of time the eggs take to become adults
The length of time that the butterfly stays as an adult
4
6.
The diagram below shows how some cells can be classified.
Which letters represent the following cells correctly?
(1)
(2)
(3)
(4)
7.
Cheek cell
S
T
S
T
Leaf cell
R
S
T
R
Root cell
T
R
R
S
Timothy wanted to show that plants take in water through their roots. He prepared
four set-ups, A, B, C and D, using similar plants as shown below.
layer of
oil
plastic
lid
Set-up
A
300ml
of
water
Set-up
B
plastic
lid
Set-up
C
Which two set-ups should he use to ensure a fair test?
(1)
(2)
(3)
(4)
A and B
A and C
B and D
C and D
5
300ml
of
water
Set-up
D
8.
The table below gives information on two plants, A and B, based on three
characteristics. A tick () shows that the plant has the characteristic.
Characteristics
Bears fruit
Produces spores
Grows in water
Plant A


Plant B


From the information given, which letters correctly represent plants A and B?
(1)
(2)
(3)
(4)
Plant A
Q
P
R
P
Plant B
P
S
P
R
6
9.
Study the flow chart below.
Start
No
Question A
Question B
Yes
grasshopper
No
Yes
mosquito
Question C
Yes
bird’s nest fern
No
papaya plant
Which of the following correctly identifies Questions A, B and C?
(1)
Question A
Is it a plant?
(2)
Is it a plant?
(3)
Is it an animal?
(4)
Is it an animal?
Question B
Does it have a 3-stage
life cycle?
Does it have a 4-stage
life cycle?
Does it have a 4-stage
life cycle?
Does it have a 3-stage
life cycle?
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Question C
Does it reproduce by
spores?
Is it a flowering plant?
Does it reproduce by
spores?
Is it a flowering plant?
10. Ying Ying set up two similar glass tanks, Y and Z. Tank Y was covered with black
paper. Both tanks contained the same number of plant A and insect W. Insect W
was observed to feed on plant A.
lid covered with
cardboard
covered with
black paper
After a few weeks, Ying Ying observed that Plant A and Insect W in Tank Z
survived better than those in Tank Y.
What is/are the most likely reason(s) for her observations?
A
B
C
(1)
(2)
(3)
(4)
There is not enough oxygen in Tank Y.
The plants in Tank Y cannot photosynthesise as there is no sunlight.
The plants in Tank Y cannot photosynthesise as there is no carbon
dioxide.
C only
A and B only
A and C only
B and C only
8
11. June bought 4 bar magnets of different lengths as shown below. She wanted to test
the strength of the bar magnets. She lowered each of them into a box of iron pins
and then recorded the number of iron pins which magnet attracted in a table below.
N
15
N
21
Based on the information given in the table, what can June conclude about the
strength of bar magnets?
(1)
(2)
(3)
(4)
The poles of a magnet have the strongest pull.
The longer a magnet, the stronger its magnetic strength.
The length of a magnet does not affect its magnetic strength.
Shorter magnets have stronger magnetic force than longer magnets.
9
12. A syringe was covered with black paper and completely filled with substance A. The
diagram below shows the set-up before the plunger was pushed in.
sealed
opening
A force was applied on the plunger and the distance D was measured and recorded
in the table below. The experiment was then repeated with substance B and the
plunger was pushed in with a similar amount of force.
Distance D (mm)
syringe filled with substance A
syringe filled with substance B
4
10
Based on the above results, which one of the following statements about
substances A and B is true?
(1)
(2)
(3)
(4)
B can be compressed but not A.
B has no definite shape but A has.
A has no definite volume but B has.
A has definite shape and volume but B has only definite volume.
10
13. A cup of crushed ice was placed in an air-tight container. After some time, water
droplets were formed outside the air-tight container as shown below.
air-tight container
Z
cup of crushed ice
Which one of the following best represents the temperature at Positions X, Y and Z?
X
33
15
15
33
(1)
(2)
(3)
(4)
14.
Temperature (0C)
Y
21
21
15
21
Z
15
0
15
0
Mr Lee wants to replace part M of his charcoal grill as shown below.
Part M
Which of the properties below are important when choosing the material to replace
part M?
A
B
C
D
(1)
(2)
(3)
(4)
It does not break easily.
It has a high melting point.
It is a poor conductor of heat.
It is a good conductor of heat.
A and B only
B and C only
A and D only
A, B and D only
11
15. When a container of water is heated until it starts to boil, a white “mist” can be seen
forming above the water.
white mist
boiling water
heat source
How is the white “mist” formed?
(1)
(2)
(3)
(4)
Water loses heat to become steam.
Water gains heat and changes to steam.
Water cools down to become water vapour.
Water becomes steam which rises and then condenses.
16. John conducted an experiment with two metal blocks of the same size but of
different mass. He released the blocks from ramps with different surfaces as shown
below.
He wanted to investigate how the time taken by the block to slide down the ramp
depends on the mass of the block and the surface of the ramp.
Which pairs of set-ups should he use in his investigation?
(1)
(2)
(3)
(4)
Time taken to slide down depends on
mass of block
surface of ramp
P and Q
R and S
R and S
P and R
Q and S
P and Q
P and R
Q and S
12
17. Sue set up the following electric circuit.
She then added one battery at a time to the circuit, as shown below, and measured
the brightness of the bulb each time a battery was added.
(2)
Brightness of
bulb (lux)
(1)
Brightness of
bulb (lux)
Which one of the following graphs shows the correct relationship between the
number of batteries and the brightness of the bulb?
(4)
Brightness of
bulb (lux)
(3)
Number of batteries
Number of batteries
Brightness of
bulb (lux)
Number of batteries
Number of batteries
13
18. The set-up below shows light shining on three shapes made of cardboards, A, B
and C. They are placed at different distances from the torch.
The diagram below shows what was seen on the screen.
What are shapes A, B and C?
A
B
(1)
(2)
(3)
(4)
14
C
19.
Joshi swings a water bottle from point A to point B and tosses it. The bottle
reaches a maximum height at point C and flips. It then comes to a stop at point D.
C
D
A
B
Which of the following statements are true?
A
B
C
D
(1)
(2)
(3)
(4)
There is more gravitational force acting on the bottle at point C than
at point D.
The bottle has more potential energy at point A than point C.
The kinetic energy of the bottle is decreasing from point B to point C.
The potential energy of the bottle is decreasing from point C to point
D.
A and B only
C and D only
A, C and D only
A, B, C and D
.
15
20. Mr Stanley is an astronaut and the picture shows him working in outer space where
there is no gravity.
On Earth, Mr Stanley has a mass of 70 kg and his weight is 678 units. His weight
on the moon is 113 units.
Mr Stanley’s children made some statements about their father’s mass and weight.
In outer space, Dad has a
mass of 70 kg but he does not
have any weight.
Jill
In outer space, Dad has
a smaller mass than 70
kg and a weight less
than 678 units.
On the moon, Dad’s weight is less
than his weight on Earth so his
mass on the moon must also be
less than 70 kg.
Lionel
Which of Mr Stanley’s children made the correct statements?
(1) Jill only
(2) Kathy only
(3) Lionel only
(4) Jill and Lionel only
16
Kathy
21. Four containers of similar sizes, P, Q, R and S, are made of different materials. An
equal volume of water at 100oC was poured into each container and the time taken
for the water in each container to cool down to room temperature was recorded in
the graph below.
Temperature (oC)
Time in
minutes
From the results of the activity, which one of the following statements is not true?
(1)
(2)
(3)
(4)
The water in Container S lost heat the fastest.
Container P is made of the poorest conductor of heat.
The water in Container Q lost heat faster than the water in Container R.
After 15 minutes, the water in all the containers has reached room
temperature.
17
22. The diagram below shows four similar rings made from different materials.
Which of the following are possible observations when all four rings are placed
through the wooden stand one on top of the other?
(1)
(2)
(3)
(4)
C only
B and D only
C and D only
A, B and C only
18
23. The following diagrams show the sequence after a man jumped off a platform with
an elastic rope tied to his ankles.
x
y
A
B
ground
x is the original length of the elastic rope and y is the length of the elastic rope when it is
fully stretched. The man then bounces back to position A before coming down to position
B.
Which of the following graphs correctly represents the energy change from the moment
the man jumped off the platform to position B?
Key:
elastic potential energy
gravitational potential energy
(1)
(2)
B
B
energy
energy
time
(3)
time
(4)
energy
energy
B
B
19
time
time
24. Trevor glued a strong magnet at the top of a ramp. He placed a copper ball close to
the magnet on the ramp. The copper ball rolled down the ramp past point P and
stopped at point Q.
copper ball
magnet
P
Q
Which one of the following correctly shows the forces acting on the ball at P and Q?
Forces acting on the ball at
P
(1)
Q
Frictional
force
Gravitational
force



(2)
(3)

(4)

Magnetic
force
Frictional
force
Gravitational Magnetic
force
force







END OF BOOKLET A
20