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Primary 3 Science Materials Quiz

Free P3 Science Materials quiz, HY3 Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 3 Science From Real Exams Generated by Tencent HY3 Free Updated 2026-08-17

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Questions

Primary 3 Science Quiz - Materials

Name: ___________________________
Class: _________
Date: ____________
Score: _______ / 40

Duration: 50 minutes
Total Marks: 40

Instructions:

This quiz has 20 questions on the topic of Materials.
Section A: Multiple Choice (1 mark each)
Section B: Short Answer (2 marks each)
Section C: Application & Explanation (2 marks each)
Write your answers clearly in the spaces provided.

Section A: Multiple Choice (Questions 1–5, 1 mark each)

Which material is most suitable for making a raincoat?
A) Paper
B) Plastic
C) Cotton cloth
D) Wood
Which of these is a natural material?
A) Glass
B) Plastic
C) Cotton
D) Nylon
A material that allows most light to pass through is described as:
A) Opaque
B) Transparent
C) Flexible
D) Waterproof
Which material would float on water?
A) A metal spoon
B) A wooden block
C) A ceramic cup
D) A stone
Rubber is often used to make shoe soles because it is:
A) Transparent
B) Flexible and waterproof
C) Very heavy
D) Able to absorb water

Section B: Short Answer (Questions 6–15, 2 marks each)

Name one property of glass that makes it useful for windows.
State whether wood is a natural or man-made material.
Give one reason why metal is used to make cooking pans.
Fill in the table below for the material "plastic".

Material	Flexible? (Yes/No)	Waterproof? (Yes/No)
Plastic

Which material — fabric or rubber — is better for a stretchy hair band? Why?

A boy drops a ceramic plate and it breaks. What property of ceramic does this show?

State one difference between natural and man-made materials.

Why is rubber not a good material for a drinking cup?

Complete the sentence: "A material that does not let water pass through is called __________."

Name two materials that are transparent.

Section C: Application & Explanation (Questions 16–20, 2 marks each)

Explain why a wooden boat can float but a metal coin sinks.

A shop sells umbrellas made of plastic and umbrellas made of paper. Which is better for rainy days? Explain your answer.

Look at the object below.

Diagram for Q18 (P3 Science)

Generated diagram for Q18.

Which panel (A or B) lets light pass through? Explain.

Tina wants to make a soft toy. She can choose fabric or metal. Which should she choose? Give two reasons.

A class tested if materials absorb water. They put one drop of water on plastic, fabric, and glass. Which material absorbed the water? Why?

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Answers

Primary 3 Science Quiz - Materials: Answer Key

Total Marks: 40
Topic: Materials

Section A: Multiple Choice

B) Plastic [1 mark]
Teaching note: Plastic is waterproof, so rain cannot pass through it. Paper and cotton absorb water; wood is not flexible for a coat.
C) Cotton [1 mark]
Teaching note: Cotton comes from the cotton plant (natural). Glass, plastic, nylon are man-made.
B) Transparent [1 mark]
Teaching note: Transparent means most light passes through. Opaque blocks light; flexible/waterproof are other properties.
B) A wooden block [1 mark]
Teaching note: Wood is less dense than water and floats. Metal, ceramic, stone are denser and sink.
B) Flexible and waterproof [1 mark]
Teaching note: Shoe soles bend (flexible) and keep feet dry (waterproof). Rubber is not transparent or absorbent.

Section B: Short Answer

Transparent (or allows light through) [2 marks: 1 for property, 1 for linking to windows]
Teaching note: Glass is transparent so we can see outside through windows.
Natural [2 marks]
Teaching note: Wood comes from trees, which are natural. Man-made means made by people from other materials.
Metal is strong / conducts heat well [2 marks]
Teaching note: Pans need to be strong and pass heat to cook food. Metal does both.

Material	Flexible?	Waterproof?
Plastic	Yes	Yes
[2 marks: 1 for each correct]
Teaching note: Plastic bends and does not absorb water.

Fabric; because it is flexible/stretchy [2 marks: 1 material, 1 reason]
Teaching note: Hair bands need to stretch; fabric (or rubber) is flexible, rubber also works but fabric was option.
Brittle / not flexible (breaks easily) [2 marks]
Teaching note: Ceramic breaks on drop, showing it is hard but brittle.
Natural comes from nature (plants/animals); man-made is made by people [2 marks]
Teaching note: Example: wood natural, plastic man-made.
Rubber may smell / not clear / not usual for cups (or absorbs? no, rubber waterproof) — better: Rubber is not transparent and not typical; but correct: Rubber is flexible but not used as cup because not rigid/holds shape poorly. Accept: "Rubber is too soft to hold liquid well." [2 marks]
Teaching note: Cups need to keep shape; rubber bends too much.
Waterproof [2 marks]
Teaching note: Waterproof means water cannot pass through.
Glass, clear plastic [2 marks: 1 each]
Teaching note: Both let light through.

Section C: Application & Explanation

Wood floats because it is less dense / has air; metal coin sinks because dense. [2 marks: 1 each point]
Teaching note: Floating depends on material density vs water. Wood naturally floats; coin is heavy metal.
Plastic umbrella; paper absorbs water and breaks, plastic is waterproof. [2 marks: 1 choice, 1 reason]
Teaching note: Rain needs waterproof material.
Panel B (glass); glass is transparent and lets light through. [2 marks: 1 panel, 1 reason]
Image note: Diagram shows A=wood (opaque), B=glass (transparent). Student picks B.
Fabric; soft and flexible (light, comfortable). [2 marks: 1 choice, 2 reasons but 2 marks total]
Teaching note: Metal is hard, heavy, not soft; fabric is soft for toy.
Fabric absorbed water; it is not waterproof (unlike plastic/glass). [2 marks: 1 material, 1 reason]
Teaching note: Fabric soaks water; plastic/glass stay dry.