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Primary 3 Science Weighted Assessment 3 (Term 3) Paper 4

Free P3 Science WA3 Paper 4, Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 3 Science From Real Exams Generated by Claude Sonnet 4 Updated 2026-08-17

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Questions

TuitionGoWhere Primary 3 Science

Weighted Assessment 3 (2026) - Version 4

Name: _________________________________ Class: _______ Date: ___________

Duration: 45 minutes
Total Marks: 50

Section A: Multiple Choice Questions (15 marks)

Choose the correct answer and write the letter (A, B, C, or D) in the brackets provided. Each question carries 1 mark.

1. Which of the following is a non-living thing?

(A) Ant
(B) Moss
(C) Pebble
(D) Mushroom

( )

2. Which material is obtained from animals?

(A) Cotton
(B) Wood
(C) Leather
(D) Rubber

( )

3. What is the first stage in a frog's life cycle?

(A) Tadpole
(B) Adult frog
(C) Egg
(D) Froglet

( )

4. Which part of a plant makes seeds?

(A) Root
(B) Stem
(C) Leaf
(D) Flower

( )

5. Which of these can we detect using our ears?

(A) A bright light
(B) A loud noise
(C) A sweet smell
(D) A rough surface

( )

6. Which animal undergoes 4 stages in its life cycle?

(A) Chicken
(B) Human
(C) Butterfly
(D) Fish

( )

7. The main function of leaves is to:

(A) Absorb water
(B) Make food
(C) Hold the plant upright
(D) Produce seeds

( )

8. Which of these is made from man-made materials only?

(A) Silk scarf
(B) Leather bag
(C) Nylon rope
(D) Wooden chair

( )

9. A tadpole develops legs and loses its tail to become a:

(A) Fish
(B) Frog
(C) Lizard
(D) Snake

( )

10. Which body part helps us smell perfume?

(A) Tongue
(B) Eyes
(C) Ears
(D) Nose

( )

11. What does a plant need from the soil?

(A) Sunlight and air
(B) Water and minerals
(C) Flowers and fruits
(D) Leaves and stems

( )

12. Which of these is a living thing?

(A) Coral
(B) Shell
(C) Coal
(D) Pearl

( )

13. The stage between caterpillar and adult butterfly is called:

(A) Egg
(B) Larva
(C) Pupa
(D) Nymph

( )

14. Which sense do we use to check if a blanket is soft?

(A) Sight
(B) Touch
(C) Hearing
(D) Taste

( )

15. What happens to a plant if its roots are damaged?

(A) It makes more food
(B) It grows more flowers
(C) It cannot absorb water properly
(D) It produces more seeds

( )

Section B: Short Answer Questions (20 marks)

Answer all questions in the spaces provided.

16. Look at the list of items. Write 'L' for living and 'N' for non-living. (4 marks)

(a) Seaweed ______

(b) Wooden desk ______

(d) Glass cup ______

17. Draw lines to match each sense with what it helps us detect. (5 marks)

Sense	What it detects
Sight	Temperature
Hearing	Flavour
Smell	Light and colours
Taste	Odours
Touch	Sounds

18. Arrange the stages of a frog's life cycle in the correct order. Number them 1 to 4. (4 marks)

______ Adult frog

______ Tadpole

______ Egg

______ Froglet (young frog with legs)

19. Write one example for each type of material. (4 marks)

(a) A natural material from plants: _______________

(b) A natural material from animals: _______________

(d) A natural material from the ground: _______________

20. Complete the sentences about plant parts. (3 marks)

(a) The _____________ absorbs water from the soil.

(b) The _____________ transports water to the leaves.

Section C: Word Problems / Structured Questions (15 marks)

Answer all questions in the spaces provided.

21. Look at the life cycles below and answer the questions. (5 marks)

Animal A: Egg → Tadpole → Adult Animal B: Egg → Caterpillar → Pupa → Adult

(a) What is Animal A? What is Animal B? (2 marks)

Animal A: _____________________________________________________________

Animal B: _____________________________________________________________

(b) Which animal goes through more stages? (1 mark)

22. Emma is using her senses while eating dinner. (5 marks)

(a) Which sense organ does she use to see what food is on her plate? (1 mark)

(b) Which sense helps her know the soup is too hot? (1 mark)

(d) Name two other senses Emma might use during dinner and what they help her detect. (2 marks)

Sense 1: _________________ - Helps detect: _________________

Sense 2: _________________ - Helps detect: _________________

23. A gardener planted some seeds in his garden. (5 marks)

(a) What three things must the gardener provide for the seeds to start growing? (3 marks)

(b) After the seeds germinate, the gardener notices small green leaves appearing. Why are leaves important for the plant? (1 mark)

End of Paper

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Answers

TuitionGoWhere Primary 3 Science

Weighted Assessment 3 (2026) - Version 4 Answer Key

Duration: 45 minutes
Total Marks: 50

Section A: Multiple Choice Questions (15 marks)

Question	Answer	Explanation
1	(C)	Pebble is non-living. Ant, moss, and mushroom are living things.
2	(C)	Leather comes from animal skin. Cotton is from plants, wood from trees, rubber from rubber trees.
3	(C)	Frog life cycle starts with an egg.
4	(D)	Flowers produce seeds for plant reproduction.
5	(B)	Ears detect sounds like loud noises.
6	(C)	Butterfly has 4 stages: Egg → Caterpillar → Pupa → Adult.
7	(B)	Leaves make food for the plant through photosynthesis.
8	(C)	Nylon is man-made. Silk, leather, and wood are natural materials.
9	(B)	A tadpole develops into a frog.
10	(D)	Nose is the sense organ for smell.
11	(B)	Plants get water and minerals from the soil through roots.
12	(A)	Coral is a living organism. Shells, coal, and pearls are non-living.
13	(C)	Pupa (chrysalis) is the stage between caterpillar and adult butterfly.
14	(B)	Touch (using skin) helps us feel textures like soft or rough.
15	(C)	Damaged roots cannot absorb water properly for the plant.

Section B: Short Answer Questions (20 marks)

16. Living or non-living classification (4 marks)

(a) Seaweed L (Seaweed is a type of algae, which is living)

(b) Wooden desk N (It is made from dead wood)

(d) Glass cup N (Glass is man-made and non-living)

Award 1 mark for each correct answer.

17. Matching senses with what they detect (5 marks)

Sense	What it detects
Sight	Light and colours
Hearing	Sounds
Smell	Odours
Taste	Flavour
Touch	Temperature

Award 1 mark for each correct match.

18. Frog life cycle in correct order (4 marks)

4 Adult frog

2 Tadpole

1 Egg

3 Froglet (young frog with legs)

Award 1 mark for each correct number.

19. Examples of materials (4 marks)

(a) A natural material from plants: Wood, Cotton, Rubber, Paper (Accept any correct example)

(b) A natural material from animals: Leather, Wool, Silk, Fur (Accept any correct example)

(d) A natural material from the ground: Stone, Sand, Clay, Rock, Gold (Accept any correct example)

Award 1 mark for each correct example.

20. Sentences about plant parts (3 marks)

(a) The root absorbs water from the soil.

(b) The stem transports water to the leaves.

Award 1 mark for each correct answer.

Section C: Word Problems / Structured Questions (15 marks)

21. Life cycle comparison (5 marks)

(a) What is Animal A? What is Animal B? (2 marks)

Animal A: Frog (1 mark)

Animal B: Butterfly (1 mark)

(b) Which animal goes through more stages? (1 mark)

Animal B / Butterfly (4 stages vs 3 stages)

Accept any two of:

Both start from an egg (1 mark)
Both hatch from eggs (1 mark)
Both go through stages before becoming adults (1 mark)
The young look different from the adults (1 mark)
Both are animals (1 mark)

22. Using senses during dinner (5 marks)

(a) Which sense organ to see food on plate? (1 mark)

Eyes

(b) Which sense to know soup is too hot? (1 mark)

Touch (using skin/lips/tongue)

Using her tongue / sense of taste

(d) Two other senses and what they detect (2 marks)

Accept any two of:

Smell - Helps detect: the aroma/odour of the food (1 mark)
Hearing - Helps detect: sounds of eating/chewing/conversations (1 mark)
Sight - Helps detect: colours and appearance of food (1 mark)

Award 1 mark for each complete pair (sense + what it detects).

23. Growing seeds in garden (5 marks)

(a) Three things for seeds to start growing (3 marks)

Water
Air
Warmth / Suitable temperature

Award 1 mark for each correct answer.

(b) Why are leaves important for the plant? (1 mark)

Leaves make food for the plant. OR Leaves carry out photosynthesis to produce food.

Accept any one of:

To absorb water and minerals from the soil
To hold/anchor the plant firmly in the ground

Marking Summary

Section	Marks
Section A: MCQ	15
Section B: Short Answer	20
Section C: Structured Questions	15
Total	50

End of Answer Key