PS RS P4L15 Review 1 WS

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Topic: REVIEW 1 (LESSON 15)

Rocket Science | Primary 4

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Primary 4: Rocket Science

Lesson Outline
• SectionA– MCQs (30 marks)
• Section B– Open-ended Questions (20 marks)

1

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Primary 4: Rocket Science

1. The flower shown below closes at night and only opens in the early
morning.

At night In the morning

Which one of the following characteristic of living things does the above
flower show?

(1) Living things die.

(2) Living things reproduce.

(3) Living things need air, food and water to survive.
(4) Living things respond to change its surroundings.

()

2. The pictures below show two livings.

Toadstool Bird’s nest fern

Which one of the following statements correctly describes both living
things?

(1) Both are flowering plants.

(2) Both reproduce from spores.

(3) Both can make their own food.

(4) Both can move freely from one place to another.

( )

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Primary 4: Rocket Science

3. The diagram below shows a cockroach.

Which of the following is not a stage in the life cycle of a cockroach?

(1) Egg

(2) Pupa

(3) Adult

(4) Nymph

( )

4. The diagram below shows a young plant.

Leaves

Which of the following statements is correct about the young plant?

(1) The young plant grows root first.

(2) The leaves will grow into an adult plant.

(3) The roots provide food for the young plant.
(4) The leaves of the young plant take in water.

( )

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Primary 4: Rocket Science

5. The diagrams below show four set-ups with equal number of green bean
seeds placed in different conditions.

Substance to Air- tight seal Substance to
absorb
absorb moisture
moisture in the air
in the air

Dry soil seed Dry soil seed

Set-up R Set-up S

Substance to Air- tight seal Substance to
absorb absorb
moisture moisture
in the air in the air

Dry soil seed Dry soil seed

Set-up T Set-up U

In which one of the following set-ups will the seeds germinate?
(1) R

(2) S

(3) T

(4) U

( )

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Primary 4: Rocket Science

6. The diagrams below show the life cycles of a chicken and frog.
Egg Egg

Chicken Chick Frog Tadpole

Which of the following describes the similarities between the 2 life cycles?

A: Both life cycles have 3 stages.
B: Both life cycles have an egg stages.
C: The young of both animals look like the adult.
D: The adult of both animals lay their eggs on the ground.

(1) A and B
(2) B and C
(3) B and D
(4) C and D

()

5

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Primary 4: Rocket Science

7. Study the diagrams below.

Young of a frog Young of a mosquito

Which of the following statements are true about the similarities between
the young of a frog and the young of a mosquito at this stage?

A: Both will moult.
B: Both live in water.
C: Both eat to grow bigger.
D: Both are the larva stage of the animal’s life cycle.

(1) A and B only
(2) B and C only
(3) A, B and D only
(4) B, C and D only

()

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Primary 4: Rocket Science

8. The table below gives information about the life cycle of 4 animals,
S, T,U or V.

Description RQRS
It has a 4-stage life cycle.
It produces by laying eggs. Yes No No Yes

No No Yes Yes

The young looks like the adult. Yes No Yes No

Which animal most likely represents a butterfly?
(1) P
(2) Q
(3) R
(4) S

()

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Primary 4: Rocket Science

9. The graph below shows the number of days for each stage of the life cycle
of an insect.

How many days would the insect take to become a male adult after the egg
is hatched?
(1) 14 days
(2) 16 days
(3) 21 days
(4) 23 days

()

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Primary 4: Rocket Science

10. An air pump containing 30 cm3 of air was inserted into a fully inflated
football using a delivery tube as shown in the diagram below. Linda gave
one complete push of the pump into the ball.

50 cm3 of air Delivery tube 30 cm3 of air
in football pumped in

Air pump

Which was the total volume of air in the football after the air pump was
pushed in completely?

(1) 20 cm3
(2) 30 cm3
(3) 50 cm3
(4) 80 cm3

()

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Primary 4: Rocket Science

11. The following statements show the different stages of a seed germinating
into a seedling.

A: The shoot grows upwards.
B: The root grows downwards.
C: The seedling develops its first leaves.
D: The young plant uses sunlight to make food.

Which of the following options show the correct stages of growth?
(1) A ➔ C ➔ D ➔ B
(2) B ➔ A ➔ C ➔ D
(3) B ➔ C ➔ A ➔ D
(4) D ➔ C ➔ B ➔ A

()

10

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Primary 4: Rocket Science

12. Study the diagram below.

Object B
Volume = 20 cm3

Object A balance
Volume = 20 cm3

Which of the following statement(s) about objectsA and B is/are correct?

A: Both objects have the same mass.
B: Both objects have different amount of matter.
C: ObjectA takes up more space than Object B.

(1) A only
(2) B only
(3) A, B and C
(4) B and C only

()

11

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Primary 4: Rocket Science

13. Diagrams 1 and 2 below show two identical beakers containing substances
A and B when placed on a tabletop and when tilted at an angle, respectively.

A

Table top

Diagram 1

B
A

Table top

Diagram 2

Based on the observation above, which one of the following statements
about substancesA and B is correct?

(1) Substance A has a greater mass than substance B.

(2) Substance A is a liquid while Substance B is a solid.

(3) Substance A has a definite shape but not Substance B.
(4) Substance A cannot be compressed but Substance B can be

compressed.

()

12

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Primary 4: Rocket Science

14. Meimei placed a balloon attached to a straw into a basin and then filled the
basin with ping pong balls to the brim, as shown in the diagram below.
straw

Ping pong ball balloon
basin

When Meimei blew into the straw, she observed that some of the ping pong
balls spilled out of the basin.

Which one of the following best explains her observation?
(1) Each ping pong ball has a definite shape.
(2) The air in the balloon has no definite shape.
(3) The inflated balloon occupied more space in the beaker.
(4) The air in between the ping pong balls has no definite volume.

()

13

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Primary 4: Rocket Science

15. Two identical balloons, X and Y,were filled with equal amounts of air and
then attached to a rod, as shown in the diagram below.

string

rod

string

XY

An additional 20 cm3 of air was pumped into Balloon X.

Which of the following observations is/are correct after additional 20 cm3
of air was pumped into Balloon X?

A: Balloon Y decreased in size.
B: The rod remained horizontal.
C: The rod tilted downwards at Balloon X.
D: Balloon X was bigger in size than Balloon Y.

(1) A and B only
(2) B and D only
(3) C and D only
(4) A, C and D only

()

14

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Primary 4: Rocket Science

Activity 3 – Open-ended Questions
1. The diagram below shows three things.

A: Mould B: Ferns C: Woollen sweater

(a) Classify the things, A, B and C, into the classification chart below. [1]

Things

Living Non-living

(b) Explain why mould cannot be classified as a plant. [1]

15

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Primary 4: Rocket Science

2. The diagrams below showAnimal C and Animal D.

Animal C Animal D
(a) Which stage of the life cycle is Animal C?
[1]

(b) Apart from their physical shape and size, state two similarities [1]
between life cycles of Animal C and Animal D.

16

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Primary 4: Rocket Science

3. Below is a diagram of the nymph and adult of a cockroach.

Nymph Adult

(a) Based on the diagram, what is the similarity between the nymph [1]
of the cockroach and the adult cockroach?

(b) Based on the diagram, what is the difference between the nymph [1]
of the cockroach and the adult cockroach?

17

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Primary 4: Rocket Science

4. Matthew prepared 4 beakers,A, B, C and D. In each beaker, he placed 3
green beans on a moist cotton wool and placed the beakers in different
locations as shown below.

Beaker

Green beans
Moist cotton wool

Set-up A BCD
Location
Well-lit Well-lit Dark room Dark room
room at room at at at
30 0C
0 0C 30 0C 0 0C

(a) He found that only the seeds in set-ups A and C germinate after a [1]
few days. From the experiment, state the three conditions that
were needed for the seeds to germinate.

(b) How many stages are there in the life cycle of a flowering plant? [1]

(c) Matthew set up another beaker, Beaker E, with some moist soil [1]
and 3 green beans. He put them next to Beaker A in a well-lit
room at 30 oC. He found that the plants in Beaker E grew better
than the plants in Beaker A. Explain why.

18

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Primary 4: Rocket Science

5. Lynn placed a funnel on a conical flask and held it in place with plasticine.
She poured some water into the funnel as shown below.

Water Funnel
Plasticine

Conical flask

(a) It is observed that the water flowed slowly into the conical flask. [1]
Give a reason for this observation.

(b) Without breaking any of the apparatus, what can Lynn do to make [1]
the water flow quickly into the conical flask?

(c) Explain how the method stated in (b) allows the water to flow [1]
quickly into the conical flask?

19

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Primary 4: Rocket Science

6. TeckWai has a syringe containing 50 ml of gas. He pumped all the Gas A
into a 60 ml test tube, Testtube P.
Syringe

50 ml Gas A

Testtube P
50 ml

(a) What will be the amount of space that Gas A occupies in Test [1]
tube P?

Teck Wai repeated the experiment with a smaller 30 ml test tube, [1]
Test tube Q.

(b) What will be the volume of Gas A that is demonstrated in Teck
Wai’s experiment.

(c) Write down the property of Gas A that is demonstrated in Teck [1]
Wai’s experiment.

20

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Primary 4: Rocket Science

7. Two solid blocks, F and G, of different sizes, are made of the same
material.

F G
10 cm3 40 cm3

They were dropped into a tank of water separately. Block G sank into the
water and the water level rose as shown in DiagramA below.

(a) Draw the water level in Diagram B when Block F was dropped [1]
into the tank of water.

Ink of water Diagram A Diagram B

Using a measuring cylinder, 40 ml of sand was measured and
poured into the tank of water. The new water level is shown in
Diagram C.

40 ml of sand

Ink of water Diagram A Diagram B

(b) Explain why the water level in Diagram A and C are not the same. [1]

21

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Primary 4: Rocket Science

8. Emily filled a container with water as shown below.

Straw

Tube B

Water

balloon

Emily blew 5 times into the straw which was attached to the opening of the
balloon. She covered the opening of the straw with her thumb after every
blow.

(a) Write down 2 observations that Emily would make. [1]
(i)

(ii)

(b) Explain the observations above. [1]

22

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Primary 4: Rocket Science

Using the same container, Emily did a similar set-up. This time,
the balloon was removed and the end of the straw was covered
with a ball of plasticine as shown in the diagram below.

Plasticine

Straw

Tube B

Water

balloon

(c) What will happen if Emily pumped water into Tube B? [1]

23

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