Question 1

Study the diagram below. Which of the following properties should the shower curtain and the canopy of the umbrella have?
A They are flexible.
B They are waterproof.
C They allow light to pass through.

Accepted Answer

B. A and B only. A shower curtain and an umbrella canopy must both be flexible so they can be drawn open/closed or folded, and waterproof so they keep water out. Allowing light to pass through is not a required property (in fact, opaque or translucent curtains are usually preferred for privacy/shade).

Question 2

Ali carried out an experiment using three different materials, A, B and C. The materials were placed in a container of water as shown below. Which property of the material is Ali testing?

Accepted Answer

D. ability to float or sink. The three materials are placed in water — B floats at the surface, A is suspended in the middle, and C rests at the bottom. Observing whether each material floats or sinks tests the property 'ability to float or sink'.

Question 3

The classification table shows three groups of objects. Group R contains beach ball and raincoat. Group S contains car tyre and eraser. Group T contains bedsheet and school uniform. Which of the following materials do R, S and T represent?

Accepted Answer

C. R: plastic, S: rubber, T: fabric. Beach balls and raincoats are typically made of plastic, so R = plastic. Car tyres and erasers are made of rubber, so S = rubber. Bedsheets and school uniforms are made of fabric, so T = fabric. This matches option C.

Question 4

Study the flowchart below. Based on the flowchart, which material, P, Q, R and S, is most suitable for making part G of the safety helmet for the worker to wear during wet weather?

Accepted Answer

C. R. Part G is the hard outer shell of a safety helmet, which should NOT be flexible (it must be rigid to protect the head) and must be waterproof (because it is worn in wet weather). Following the flowchart: 'Is it flexible?' → No → 'Is it waterproof?' → Yes → R. So R is the most suitable material.

Question 5

Mary used the set-up as shown below. She wanted to test the strength of materials A, B and C. She placed identical bricks one at a time on each material until it broke. She recorded the results below: Material A — 21 bricks; Material B — 9 bricks; Material C — 13 bricks. Which row shows the strongest and the weakest material?

Accepted Answer

A. strongest: A, weakest: B. The strongest material holds the most bricks before breaking, and the weakest holds the fewest. Material A held 21 bricks (most) → strongest. Material B held only 9 bricks (fewest) → weakest. This matches option A.

Question 6

Which of the following is/are magnetic materials?
X Aluminium
Y Copper
Z Steel

Accepted Answer

B. Z only. Magnetic materials are attracted to magnets. Steel (which contains iron) is magnetic. Aluminium and copper are metals but are NOT magnetic. Therefore only Z (Steel) is magnetic.

Question 7

Which of the following objects uses a magnet?

Accepted Answer

B. compass needle. A compass needle is itself a small magnet — it aligns with Earth's magnetic field to point north. The umbrella, table lamp and watering can do not use magnets to function.

Question 8

W and V repelled when they are brought near each other as shown below. Based on the observation, which of the following is definitely true?

Accepted Answer

A. W: magnet, V: magnet. Only two magnets can repel each other. Attraction can occur between a magnet and any magnetic material, but repulsion is the definitive test of magnetism — it requires both objects to be magnets with like poles facing each other. Therefore both W and V must be magnets.

Question 9

Jane placed three ring magnets through a wooden rod as shown below. Which row shows the correct poles at P, Q and R of the ring magnets?

Accepted Answer

C. P: S, Q: S, R: N. The three ring magnets are floating apart on the rod, which means like poles must be facing each other (like poles repel). The top of the topmost ring is N-pole, so its bottom face (P) must be S. For the middle ring to be repelled by the top ring, the face of the middle ring facing P must also be S — but the labels show P is the underside of ring 1 and Q is the upper face of ring 2. For repulsion, Q must be S too. Similarly, the bottom face of ring 2 and the upper face of ring 3 (R) must be like poles. Following the labelled pattern, P = S, Q = S, R = N gives the alternating repulsion pattern with the given N-pole at the top.

Question 10

Diana conducted an experiment using magnets, X and Y, of different shapes. She placed each magnet at the same distance above a tray containing identical number of iron clips. The diagrams below show her observation. Based on her observations above, which of the following statements are correct?
A The iron clips are made of magnetic materials.
B Magnet X and Y are equally strong.
C Magnet Y is stronger than magnet X.
D The magnet is strongest at its poles.

Accepted Answer

D. A, C and D only. A is correct: the iron clips are attracted, so they are magnetic. D is correct: clips hang from the N and S poles in clusters (none in the middle), showing the magnet is strongest at its poles. C is correct: Magnet Y attracted 12 iron clips while X attracted 9, so Y is stronger than X. B is wrong because the two magnets are NOT equally strong (9 vs 12 clips). Therefore A, C and D are correct.

Question 11

Peter wanted to make an electromagnet using the electrical method. Which one of the following set-ups should he use to make the strongest electromagnet?

Accepted Answer

D. 3 batteries, 20 turns of wire around a nail. An electromagnet becomes stronger when (i) more batteries are used (greater current) and (ii) the wire is wound more times around the nail (more turns). Option (4) has the most batteries (3) AND the most turns of wire (20), so it produces the strongest electromagnet.

P3 Science CA2 2025 — St Hildas

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