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Primary 3 Science Diversity Materials Quiz

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

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Primary 3 Science From Real Exams Generated by DeepSeek V4 Flash Sample 04 Updated 2026-08-17

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Questions

Primary 3 Science Quiz - Diversity Materials

Name: _________________________ Class: _________________________ Date: _________________________ Score: ________ / 20

Duration: 30 minutes Total Marks: 20

Instructions:

This quiz has 20 questions about the properties and uses of different materials.
Read each question carefully before answering.
Write your answers in the spaces provided.
Show your working or reasoning where needed.

Section A: Multiple-Choice Questions (Questions 1 to 5)

Circle the correct answer for each question. Each question is worth 1 mark.

1. Which of the following materials is most suitable for making a raincoat?

A) Cotton
B) Metal
C) Plastic
D) Wood

Answer: ________

2. A student wants to make a toy boat that floats on water. Which material would be the best choice?

A) A metal block
B) A piece of wood
C) A glass marble
D) A rubber eraser

Answer: ________

3. Which property of glass makes it suitable for making windows?

A) It is flexible.
B) It is waterproof.
C) It is transparent.
D) It is strong.

Answer: ________

4. A spoon made of which material would be most likely to bend easily?

A) Metal
B) Wood
C) Plastic
D) Ceramic

Answer: ________

5. Which of the following is a natural material?

A) Nylon
B) Plastic
C) Wood
D) Glass

Answer: ________

Section B: Matching and Classification (Questions 6 to 10)

Match the items or fill in the blanks. Each question is worth 1 mark.

6. Match each material in List A to its correct property in List B. Write the letter of the property in the blank.

List A (Material)	Property (List B)
Rubber	______
Metal	______

A) Can be stretched and returns to original shape
B) Allows light to pass through completely
C) Hard and does not bend easily
D) Absorbs water easily

7. Look at the objects below. Classify them into Natural Materials and Man-Made Materials by writing their names in the correct column.

Objects: Cotton T-shirt, Plastic Bottle, Leather Shoes, Glass Cup

Natural Materials	Man-Made Materials
________________	________________
________________	________________

8. Complete the sentence by choosing the correct word from the box.

flexible	waterproof	transparent	strong

A material that does not let water pass through is called ______________.

9. A student has a piece of cloth and a piece of plastic sheet. Which material is more suitable for making an umbrella? Explain your answer in one sentence.

Material: ________________ Reason: _____________________________________________________________

10. Which property of a metal pot makes it suitable for cooking soup on a stove? Circle the correct answer.

A) It is flexible.
B) It is transparent.
C) It is strong and can withstand heat.
D) It floats on water.

Answer: ________

Section C: Short-Answer Questions (Questions 11 to 15)

Write your answers in the spaces provided. Each question is worth 2 marks.

11. A student drops a rubber ball and a glass marble from the same height.

(a) Which object is more likely to break? (1 mark)
(b) Explain why. (1 mark)

(a) ________________ (b) ________________________________________________________________

12. Look at the table below showing the properties of three materials.

Material	Floats on Water?	Waterproof?	Transparent?
P	Yes	Yes	No
Q	No	Yes	Yes
R	Yes	No	No

Which material (P, Q, or R) would be best for making a transparent window? Explain your answer.

Material: ________________ Explanation: ________________________________________________________

13. A pencil is made of wood and has a metal tip (ferrule) holding an eraser.

(a) Why is wood a good material for the body of the pencil? Give one reason. (1 mark)
(b) Why is metal used for the tip instead of wood? Give one reason. (1 mark)

(a) ________________________________________________________________ (b) ________________________________________________________________

14. A student wants to make a container to keep her lunch dry in her school bag. She has a paper bag and a plastic container.

(a) Which container should she choose? (1 mark)
(b) Explain your answer using the property of the material. (1 mark)

(a) ________________ (b) ________________________________________________________________

15. A toy car is made of plastic. Why is plastic a suitable material for making toy cars? Give two reasons.

Section D: Application and Explanation (Questions 16 to 20)

Read each question carefully. Each question is worth 2 marks.

16. A chef uses a metal pan to cook food on a stove. He uses a wooden spoon to stir the food.

(a) Why is metal a suitable material for the pan? (1 mark)
(b) Why is wood a suitable material for the spoon? (1 mark)

(a) ________________________________________________________________ (b) ________________________________________________________________

17. A student places a metal coin and a plastic toy duck in a basin of water.

(a) Which object will sink? (1 mark)
(b) Explain why the other object floats. (1 mark)

(a) ________________ (b) ________________________________________________________________

18. A window is made of glass. The frame around the glass is made of metal.

(a) Why is glass used for the window pane? (1 mark)
(b) Why is metal used for the frame instead of rubber? (1 mark)

(a) ________________________________________________________________ (b) ________________________________________________________________

19. A student has a rubber band and a piece of string. She wants to tie a bundle of sticks together tightly.

(a) Which material is more suitable? (1 mark)
(b) Explain your answer using the property of the material. (1 mark)

(a) ________________ (b) ________________________________________________________________

20. A water bottle is made of plastic. A metal water bottle is also available.

(a) Give one advantage of using a plastic water bottle over a metal one. (1 mark)
(b) Give one advantage of using a metal water bottle over a plastic one. (1 mark)

(a) ________________________________________________________________ (b) ________________________________________________________________

End of Quiz

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Answers

Answer Key: Primary 3 Science Quiz - Diversity Materials

Total Marks: 20

Section A: Multiple-Choice Questions (Questions 1 to 5)

1 mark each.

1. C) Plastic

Explanation: A raincoat must keep the wearer dry. Plastic is a waterproof material, meaning it does not let water pass through. Cotton absorbs water, metal and wood are not flexible or comfortable for clothing.
Marking note: Award 1 mark for correct answer.

2. B) A piece of wood

Explanation: Wood is less dense than water, so it floats. Metal and glass are dense and sink. Rubber can be made to float, but wood is a classic material for toy boats because it naturally floats.
Marking note: Award 1 mark for correct answer.

3. C) It is transparent.

Explanation: Windows need to let light through so we can see outside. Transparent materials allow light to pass through clearly. Glass is also waterproof and strong, but the key property for a window is transparency.
Marking note: Award 1 mark for correct answer.

4. C) Plastic

Explanation: Plastic is a flexible material that can bend easily. Metal is hard and strong, wood is rigid, and ceramic is hard but brittle (breaks rather than bends).
Marking note: Award 1 mark for correct answer.

5. C) Wood

Explanation: Natural materials come from nature. Wood comes from trees. Nylon and plastic are man-made (synthetic) materials. Glass is man-made from sand.
Marking note: Award 1 mark for correct answer.

Section B: Matching and Classification (Questions 6 to 10)

1 mark each.

6. Rubber → A (Can be stretched and returns to original shape) Metal → C (Hard and does not bend easily)

Explanation: Rubber is elastic, meaning it stretches and returns to shape. Metal is hard and strong, so it does not bend easily.
Marking note: Award 1 mark for both correct matches. If only one is correct, award 0 marks.

Natural Materials	Man-Made Materials
Cotton T-shirt	Plastic Bottle
Leather Shoes	Glass Cup

Explanation: Cotton comes from the cotton plant, and leather comes from animal skin. Plastic and glass are made by humans from raw materials.
Marking note: Award 1 mark for all four items correctly placed. Accept any order within each column.

8. A material that does not let water pass through is called waterproof.

Explanation: "Waterproof" means water cannot pass through it. "Flexible" means can bend, "transparent" means lets light through, "strong" means hard to break.
Marking note: Award 1 mark for correct word.

9. Material: Plastic sheet Reason: Plastic is waterproof, so it will keep the person dry.

Explanation: An umbrella must keep rain off the user. Cloth absorbs water and would let rain through, making the person wet.
Marking note: Award 1 mark for correct material and a valid reason mentioning waterproof property.

10. C) It is strong and can withstand heat.

Explanation: A cooking pot must be strong enough to hold food and withstand the high heat of a stove without melting or breaking. Metal has these properties.
Marking note: Award 1 mark for correct answer.

Section C: Short-Answer Questions (Questions 11 to 15)

2 marks each.

11. (a) The glass marble (1 mark)

(b) Glass is brittle and can break easily when dropped, while rubber is flexible and bounces instead of breaking. (1 mark)
Explanation: Brittle materials like glass crack or shatter on impact. Flexible materials like rubber absorb the impact and return to shape.
Marking note: Award 1 mark for each part. Accept "glass is hard and can crack" or similar.

12. Material: Q (1 mark) Explanation: Q is transparent, so it allows light to pass through, which is needed for a window. (1 mark)

Explanation: The table shows Q is transparent. Material P is not transparent, and R is not transparent. Even though Q sinks, that property does not matter for a window.
Marking note: Award 1 mark for correct material and 1 mark for mentioning transparency.

13. (a) Wood is light and easy to sharpen. (1 mark)

(b) Metal is strong and holds the eraser firmly without breaking. (1 mark)
Explanation: Wood is chosen for pencils because it is lightweight and can be sharpened to a point. Metal is used for the ferrule because it is strong and can be crimped to hold the eraser.
Marking note: Accept any reasonable property. For (a): "Wood is not too hard" or "Wood can be cut easily." For (b): "Metal is stronger than wood" or "Metal does not break easily."

14. (a) Plastic container (1 mark)

(b) Plastic is waterproof, so it will keep the lunch dry even if water spills in the bag. (1 mark)
Explanation: Paper absorbs water, so a paper bag would not protect the lunch from moisture. Plastic is waterproof and keeps contents dry.
Marking note: Award 1 mark for correct choice and 1 mark for mentioning waterproof property.

15. 1. Plastic is light, so the toy car is easy to carry and move. (1 mark) 2. Plastic is strong and does not break easily when dropped. (1 mark)

Explanation: Toy cars need to be lightweight for children to play with, and durable to withstand being dropped or bumped. Plastic has both properties.
Marking note: Award 1 mark for each valid reason. Accept: "Plastic can be moulded into shapes," "Plastic is cheap," or "Plastic does not rust."

Section D: Application and Explanation (Questions 16 to 20)

2 marks each.

16. (a) Metal is a good conductor of heat, so the pan heats up quickly and cooks food evenly. (1 mark)

(b) Wood is a poor conductor of heat, so the spoon does not get too hot to hold. (1 mark)
Explanation: The pan needs to transfer heat from the stove to the food, so metal is suitable. The spoon handle must stay cool for the chef to hold, so wood (an insulator) is suitable.
Marking note: Award 1 mark for each part. Accept "Metal is strong and can withstand heat" for (a). Accept "Wood does not get hot easily" for (b).

17. (a) The metal coin (1 mark)

(b) The plastic toy duck floats because plastic is less dense than water, so it stays on the surface. (1 mark)
Explanation: Objects that are denser than water sink. Metal is dense, so the coin sinks. Plastic is less dense than water, so the toy duck floats.
Marking note: Award 1 mark for each part. Accept "The duck is hollow and filled with air" as a valid explanation.

18. (a) Glass is transparent, so it lets light into the room. (1 mark)

(b) Metal is strong and can hold the glass in place, while rubber is too flexible and would not hold the frame securely. (1 mark)
Explanation: The window pane needs to be transparent. The frame needs to be strong and rigid to support the glass. Rubber is flexible and would not provide a stable frame.
Marking note: Award 1 mark for each part. Accept "Metal does not bend easily" for (b).

19. (a) Rubber band (1 mark)

(b) Rubber is elastic and can stretch around the sticks, holding them tightly together. (1 mark)
Explanation: An elastic material like rubber can stretch and then return to its original shape, creating tension that holds the bundle. String can be tied, but a rubber band provides constant tension.
Marking note: Award 1 mark for correct choice and 1 mark for mentioning elasticity or stretchiness.

20. (a) Plastic is lighter than metal, so the bottle is easier to carry. (1 mark)

(b) Metal is stronger and more durable than plastic, so the bottle lasts longer. (1 mark)
Explanation: Both materials have advantages. Plastic is lightweight and does not dent. Metal is more durable and can keep drinks cold longer.
Marking note: Award 1 mark for each valid advantage. Accept: "Plastic does not rust" or "Plastic is cheaper." Accept: "Metal keeps water cool" or "Metal is harder to break."

End of Answer Key