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Primary 3 Science Semestral Assessment 2 (End of Year) Paper 5
Free P3 Science SA2 Paper 5, HY3 Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.
These static practice materials are generated from the site's syllabus and paper-generation workflow, with source and model context shown so students and parents can evaluate the material before use.
Questions
TuitionGoWhere Exam Practice (AI) — Science Primary 3
SA2 Practice Paper — Version 5
School: TuitionGoWhere Exam Practice (AI)
Subject: Science
Level: Primary 3
Paper: SA2 Practice (Version 5 of 5)
Duration: 60 minutes
Total Marks: 40
Name: ______________________
Class: _________
Date: ___________
Instructions:
- This paper has 20 questions on the topic of Diversity.
- Section A: Questions 1–10 (1 mark each)
- Section B: Questions 11–15 (2 marks each)
- Section C: Questions 16–20 (2 marks each)
- Write your answers clearly in the spaces provided.
- Marks for each question are shown at the end.
Section A (10 marks)
Circle the correct letter. 1 mark each.
1. Which of the following is a living thing?
A) Toy car
B) Rose plant
C) Wooden chair
D) Plastic cup
2. Which characteristic shows that a cat is a living thing?
A) It is soft
B) It can grow
C) It is coloured
D) It is small
3. Which animal group has feathers and lays eggs?
A) Fish
B) Birds
C) Mammals
D) Reptiles
4. A mushroom is an example of a ________.
A) plant
B) bacteria
C) fungus
D) insect
5. Which material is natural?
A) Plastic bag
B) Cotton shirt
C) Glass cup
D) Nylon rope
6. Which material lets most light pass through?
A) Wooden door
B) Clear glass window
C) Metal spoon
D) Rubber tyre
7. Which animal breathes with gills?
A) Dog
B) Sparrow
C) Goldfish
D) Frog (on land)
8. Which of these is NOT a living thing?
A) Mould
B) Yeast
C) Rock
D) Bacteria
9. A material that does not let water pass through is ________.
A) waterproof
B) flexible
C) transparent
D) strong
10. Which group of animals has scales and lives in water?
A) Birds
B) Fish
C) Insects
D) Mammals
Section B (10 marks)
Answer in the spaces. 2 marks each.
11. Classify the following into living and non-living things.
Table, cow, mushroom, bicycle, fern
Living: ________________________
Non-living: _____________________
12. Complete the table about material properties.
| Material | Transparent / Not transparent | Flexible / Not flexible |
|---|---|---|
| Plastic bag | ||
| Wooden ruler |
13. State two characteristics of living things and give one example for each.
(a) _________________________ Example: _________
(b) _________________________ Example: _________
14. A boy wears a raincoat made of plastic. Explain why plastic is suitable.
15. Sort these animals into groups by body covering:
Cat (fur), snake (dry scales), sparrow (feathers), fish (scales)
Fur: _________
Feathers: _________
Scales: _________
Section C (10 marks)
Answer in the spaces. 2 marks each.
16. Look at the picture of four objects.
Image pending generation: diagram for Q16.
Which two are living? Why?
Living: __________________
Reason: _________________
17. Bacteria are tiny living things. Are all bacteria harmful? Explain your answer.
18. A cup is made of glass and a plate is made of ceramic. Both break easily. Give one property they share and one use for glass because of transparency.
Shared: _______________
Use of glass: __________
19. Classify: wool, steel, leather, polyester. Which are natural? Which are man-made?
Natural: ________________
Man-made: ______________
20. A frog starts as an egg, becomes a tadpole, then an adult frog. Which animal group does it belong to and why is its life cycle special?
Group: _______________
Special: _____________
Answers
TuitionGoWhere Exam Practice (AI) — Science Primary 3
SA2 Practice Paper Version 5 — Answer Key
Total Marks: 40
Section A (10 marks)
1. B (1 mark)
Teaching note: A rose plant is living because it grows, needs water/air/food, and reproduces. Toy car, chair, cup are non-living made by humans.
2. B (1 mark)
Teaching note: Growth is a characteristic of living things. Softness, colour, size are not proof of life.
3. B (1 mark)
Teaching note: Birds have feathers and lay eggs. Fish have scales, mammals have fur and usually live birth, reptiles have dry scales.
4. C (1 mark)
Teaching note: Mushroom is fungus, not plant. Fungi do not make food like plants.
5. B (1 mark)
Teaching note: Cotton is natural from cotton plant. Plastic, glass, nylon are man-made.
6. B (1 mark)
Teaching note: Clear glass is transparent (most light passes). Wood, metal, rubber are not.
7. C (1 mark)
Teaching note: Goldfish breathes with gills underwater. Dog/sparrow use lungs; frog on land uses lungs/skin.
8. C (1 mark)
Teaching note: Rock is non-living. Mould, yeast, bacteria are living microorganisms.
9. A (1 mark)
Teaching note: Waterproof means water cannot pass through. Flexible = bend, transparent = light passes, strong = hard to break.
10. B (1 mark)
Teaching note: Fish have scales and live in water. Birds have feathers, insects have wings, mammals have fur.
Section B (10 marks)
11. (2 marks: 1 for each group correct)
Living: cow, mushroom, fern
Non-living: table, bicycle
Teaching note: Living need food/air/water, grow, reproduce. Mushroom is fungus (living). Table/bicycle are made, do not grow.
12. (2 marks: ½ mark per cell)
Plastic bag: Transparent (or not, acceptable if clear bag), Flexible
Wooden ruler: Not transparent, Not flexible
Teaching note: Plastic bag bends and may be see-through; wood is rigid and opaque.
13. (2 marks: 1 mark each characteristic+example)
(a) Grow — example: child grows taller
(b) Reproduce — example: hen lays eggs
Teaching note: Other accepted: respond to change (plant bends to light), need food/air/water (dog eats). Must give real example.
14. (2 marks: 1 for property, 1 for link to use)
Plastic is waterproof (1). So rain cannot pass through to wet the boy (1).
Teaching note: Property must match purpose. Common mistake: says "strong" but raincoat needs waterproof.
15. (2 marks: ½ each correct)
Fur: cat
Feathers: sparrow
Scales: snake, fish
Teaching note: Body covering helps classify animals.
Section C (10 marks)
16. (2 marks: 1 living list, 1 reason)
Living: sunflower, snail (1)
Reason: They grow and need air/food/water (1)
Teaching note: From image, toy robot and bread are non-living though bread was once from living wheat. Snail moves and grows.
17. (2 marks: 1 answer, 1 explain)
No, not all bacteria are harmful (1). Some help like yeast in bread or good bacteria in yoghurt (1).
Teaching note: Bacteria can be useful; misconception all are bad.
18. (2 marks: 1 shared, 1 use)
Shared: break easily / not flexible (1)
Use of glass: window so we see through (1)
Teaching note: Transparency lets light pass; both are brittle.
19. (2 marks: 1 each group)
Natural: wool, leather
Man-made: steel (processed), polyester
Teaching note: Wool from sheep, leather from animal skin; polyester synthetic, steel from iron ore processed (accepted man-made).
20. (2 marks: 1 group, 1 special)
Group: amphibian (1)
Special: changes from tadpole with tail to frog with legs (metamorphosis) (1)
Teaching note: Frog is amphibian; life cycle shows big change, not just growing bigger.
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