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Primary 3 Science Practice Paper 4

Free P3 Science Practice Paper 4, HY3 AI version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 3 Science AI Generated Generated by Tencent HY3 Free Updated 2026-08-17

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Questions

TuitionGoWhere Practice Paper - Science Primary 3

TuitionGoWhere Practice Paper (AI)
Version: 4 of 5
Subject: Science
Level: Primary 3
Paper: Practice Paper (Topic: Diversity)
Duration: 45 minutes
Total Marks: 40
Name: ________________________
Class: ________
Date: ________

Instructions:

This practice paper has 20 questions on the topic of Diversity.
Section A: 10 multiple-choice questions (1 mark each).
Section B: 6 short-answer questions (2 marks each).
Section C: 4 structured questions (1, 2, 3, and 3 marks respectively).
Answer all questions in the spaces provided.
No past-year exam paper was used; this is syllabus-first AI practice content.

Section A (10 marks)

Choose the correct answer for each question.

Which of the following is a living thing?
(a) A toy car
(b) A fern
(c) A stone
(d) A glass cup
Which characteristic shows that a cat is a living thing?
(a) It is soft
(b) It can reproduce
(c) It is coloured
(d) It is small
A butterfly belongs to which group of animals?
(a) Mammal
(b) Bird
(c) Insect
(d) Fish
Which material is natural?
(a) Plastic
(b) Wood
(c) Glass
(d) Nylon
A raincoat is usually made of waterproof material. Which property is most useful for a raincoat?
(a) Transparent
(b) Waterproof
(c) Flexible
(d) Strong
Mushrooms are best classified as:
(a) Plants
(b) Animals
(c) Fungi
(d) Bacteria
Which animal breathes using gills?
(a) Frog
(b) Bird
(c) Fish
(d) Lizard
Which of these is NOT a characteristic of living things?
(a) Need food
(b) Grow
(c) Reproduce
(d) Made by humans
Rubber is obtained from a tree. Rubber is a:
(a) Man-made material
(b) Natural material
(c) Metal
(d) Ceramic
A teddy bear can be moved by a child. Why is it non-living?
(a) It is soft
(b) It cannot move by itself
(c) It is brown
(d) It is small

Section B (12 marks)

Answer each question in the space provided.

Name two characteristics of living things. (2 marks)

Classify the following into living and non-living: rose, book, dog, spoon. (2 marks)

State one property of glass and one use of glass. (2 marks)

Give one example of a mammal and one example of a reptile. (2 marks)

Why is plastic not a natural material? (2 marks)

Bacteria are living things. Give one way bacteria can be useful. (2 marks)

Section C (18 marks)

Answer the questions below.

Look at the picture below. Write whether each object is living or non-living and give one reason for each. (3 marks)

Diagram for Q17 (P3 Science)

Generated diagram for Q17.

(a) Sunflower: ___________________________
(b) Wooden chair: ___________________________
(c) Goldfish: ___________________________

At East Coast Park, Siti sees a crab, a seashell, a coconut tree, and a plastic bottle. Complete the table. (2 marks)

Object	Living or Non-living?
Crab
Seashell
Coconut tree
Plastic bottle

A school makes a new outdoor bench. They can choose wood, metal, or plastic. Complete the table and circle the best material for a bench that must not rust and must be comfortable. (3 marks)

Material	Property 1	Property 2	Suitable? (Yes/No)
Wood
Metal
Plastic

Best material: ________

Wei Liang thinks a mushroom is not living because it does not move like a cat. Explain why a mushroom is living and design a simple observation to prove it. (3 marks)

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Answers

TuitionGoWhere Practice Paper - Science Primary 3 (Answer Key)

Version: 4 of 5
Total Marks: 40

Section A (10 marks)

(b) A fern [1]
Teaching note: Fern is a plant; plants are living. Toys, stones, and glass are non-living.
(b) It can reproduce [1]
Teaching note: Reproduction is a characteristic of living things. Softness, colour, size are not proof of life.
(c) Insect [1]
Teaching note: Butterflies have wings and six legs; they are insects.
(b) Wood [1]
Teaching note: Wood comes from trees (natural). Plastic, glass, nylon are man-made.
(b) Waterproof [1]
Teaching note: Raincoat keeps user dry, so waterproof property is most useful.
(c) Fungi [1]
Teaching note: Mushrooms are fungi, not plants or animals.
(c) Fish [1]
Teaching note: Fish use gills to breathe underwater.
(d) Made by humans [1]
Teaching note: Many non-living things are made by humans; this is not a life characteristic.
(b) Natural material [1]
Teaching note: Rubber from tree is natural, though processed rubber can be synthetic.
(b) It cannot move by itself [1]
Teaching note: Teddy bear is moved by child; living things move by themselves.

Section B (12 marks)

[2] Any two: need food / need water / need air / grow / reproduce / respond to changes / move by itself.
Marking: 1 mark per correct characteristic.
[2] Living: rose, dog. Non-living: book, spoon.
Marking: 1 mark for correct grouping of each pair (or list correctly).
[2] Property: transparent (light passes through) or hard. Use: window / cup / lens.
Marking: 1 mark property, 1 mark use.
[2] Mammal: e.g., cat, dog, human. Reptile: e.g., lizard, snake, turtle.
Marking: 1 mark each.
[2] Plastic is made by humans from chemicals (not directly from nature).
Marking: 1 mark "man-made", 1 mark reason (from petroleum/chemicals).
[2] Bacteria can help make yoghurt / medicine / break down waste.
Marking: 1 mark "living" implied, 1 mark useful example.

Section C (18 marks)

[3]
(a) Sunflower: Living – it grows / needs air, water, food. [1]
(b) Wooden chair: Non-living – made from wood but cannot grow or reproduce. [1]
(c) Goldfish: Living – moves by itself / breathes / grows. [1]
Image note: Pupil uses labelled drawing to identify each.
[2]
Crab: Living [0.5]
Seashell: Non-living (shell is from animal but empty shell not living) [0.5]
Coconut tree: Living [0.5]
Plastic bottle: Non-living [0.5]
Common mistake: thinking seashell is living because it came from animal.
[3]
Wood: does not rust, comfortable → Yes [1]
Metal: strong but can rust → No (if rust is problem) [1]
Plastic: waterproof but less comfortable → Maybe [0.5]
Best: Wood [0.5]
Marking descriptors: table completion 2 marks, best choice 1 mark.
[3]
Explanation: Mushroom is living because it grows and reproduces (spores), even if no legs. [2]
Observation: Check mushroom over days for size increase / new mushrooms. [1]
Marking: 2 for reason, 1 for simple investigation.