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Primary 3 Science Weighted Assessment 1 (Term 1) Paper 2
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Questions
TUITIONGOWHERE PRIMARY SCHOOL (AI)
WEIGHTED ASSESSMENT 1 EXAMINATION 2026
PRIMARY 3 SCIENCE (VERSION 2)
Duration: 45 minutes
Total Marks: 50
INSTRUCTIONS TO STUDENTS
- Do not turn over this page until you are told to do so.
- Answer all questions.
- Write your answers clearly in the spaces provided.
Name: _________________________ ( )
Class: Primary 3 ( )
Date: _________________________
| Section | Marks |
|---|---|
| A (MCQ) | /20 |
| B (Short Answer) | /18 |
| C (Application) | /12 |
| Total | /50 |
Section A: Multiple Choice Questions (20 marks)
Choose the best answer and write 1, 2, 3 or 4 in the brackets. Each question carries 2 marks.
1. Which of these is NOT a living thing? (2 marks)
- Mushroom
- Seaweed
- Coral rock
- Ant
( )
2. What do all living things need to survive? (2 marks)
- Sunlight, soil and air
- Food, water and air
- Water, soil and toys
- Food, shelter and television
( )
3. A seed growing into a plant is an example of which characteristic of living things? (2 marks)
- Movement
- Reproduction
- Growth
- Response
( )
4. Which animal has scales and lives only in water? (2 marks)
- Crocodile
- Goldfish
- Turtle
- Penguin
( )
5. Which material lets some light pass through but you cannot see clearly? (2 marks)
- Opaque
- Transparent
- Translucent
- Reflective
( )
6. A rubber band can stretch and return to its shape. This property is called: (2 marks)
- Flexibility
- Elasticity
- Hardness
- Smoothness
( )
7. Which of these is a man-made material? (2 marks)
- Wool
- Silk
- Rubber (from tree)
- Polyester
( )
8. Why is glass used to make windows? (2 marks)
- It is strong
- It is transparent
- It is flexible
- It is soft
( )
9. Which animal goes through incomplete metamorphosis (3 stages only)? (2 marks)
- Butterfly
- Frog
- Grasshopper
- Mosquito
( )
10. In a frog's life cycle, what comes after the tadpole stage? (2 marks)
- Egg
- Froglet
- Adult frog
- Larva
( )
Section B: Short Answer Questions (18 marks)
Answer the questions clearly.
11. Give TWO differences between living things and non-living things. (4 marks)
| Living Things | Non-Living Things |
|---|---|
| a) _________________________ | _________________________ |
| b) _________________________ | _________________________ |
12. Look at these animals: [Whale, Penguin, Shark, Bat, Crocodile, Salamander] (4 marks)
Classify them into the correct groups:
Mammals: _________________________
Birds: _________________________
Fish: _________________________
Reptiles: _________________________
13. Fill in the blanks with the correct property of materials: (3 marks)
Word bank: absorbent, waterproof, transparent, hard, flexible
a) A towel is _____________ because it soaks up water.
b) A glass window is _____________ because light can pass through it.
c) A wire can be bent into different shapes because it is _____________.
14. Name ONE natural material and ONE man-made material used in your classroom. (4 marks)
a) Natural material: _____________
It is used to make: _____________
b) Man-made material: _____________
It is used to make: _____________
15. Complete the life cycle of a mosquito: (3 marks)
Egg → _____________ → _____________ → _____________
Section C: Application Questions (12 marks)
Use your knowledge to answer these questions.
16. Sarah observed two objects - Object A and Object B. (4 marks)
Object A: Grows bigger each week, needs water Object B: Does not change size, does not need water
a) Which object is most likely a living thing? (1 mark)
b) Give TWO more observations Sarah could make to confirm if it is living. (2 marks)
Observation 1: _____________________________________________
Observation 2: _____________________________________________
c) Give ONE example of what Object B could be. (1 mark)
17. Mr. Tan wants to build a fish tank. He needs to choose materials for different parts: (4 marks)
| Part | Material Choices |
|---|---|
| Walls (to see fish) | Wood, Glass, Metal |
| Stand (to hold weight) | Cardboard, Plastic, Steel |
a) What material should he use for the walls? Why? (2 marks)
Material: _________________________
Reason: _________________________
b) What material should he use for the stand? Why? (2 marks)
Material: _________________________
Reason: _________________________
18. Study this incomplete life cycle: (4 marks)
[A] → Caterpillar → [B] → Butterfly
a) What is [A]? _________________________
b) What is [B]? _________________________
c) This life cycle shows complete metamorphosis. What does this mean? (2 marks)
~ End of Paper ~
Answers
TUITIONGOWHERE PRIMARY SCHOOL (AI)
WEIGHTED ASSESSMENT 1 EXAMINATION 2026
PRIMARY 3 SCIENCE (VERSION 2) - ANSWER KEY
Duration: 45 minutes
Total Marks: 50
Section A: Multiple Choice Questions (20 marks)
Each question carries 2 marks.
| Question | Answer | Explanation |
|---|---|---|
| 1 | (3) | Coral rock is not a living thing. Mushrooms, seaweed, and ants are all living things that grow, reproduce, and need nutrients. |
| 2 | (2) | All living things need food, water, and air to survive. Soil is only needed by plants, and toys/television are not basic needs. |
| 3 | (3) | A seed growing into a plant demonstrates growth - increasing in size over time. This is a key characteristic of living things. |
| 4 | (2) | Goldfish have scales and live only in water (fish). Crocodiles are reptiles that can go on land, turtles are reptiles, penguins are birds. |
| 5 | (3) | Translucent materials let some light through but you cannot see clearly through them (e.g., frosted glass). Transparent lets all light through clearly. |
| 6 | (2) | Elasticity is the ability to stretch and return to original shape. Flexibility is the ability to bend without breaking. |
| 7 | (4) | Polyester is a man-made/synthetic material. Wool comes from sheep, silk from silkworms, and rubber from rubber trees - all natural. |
| 8 | (2) | Glass is used for windows because it is transparent - it allows light to pass through and we can see through it. |
| 9 | (3) | Grasshoppers have 3 stages (egg, nymph, adult) - incomplete metamorphosis. Butterflies, frogs, and mosquitoes have 4 stages. |
| 10 | (2) | In a frog's life cycle: Egg → Tadpole → Froglet (with legs) → Adult frog. |
Section A Total: /20
Section B: Short Answer Questions (18 marks)
11. Give TWO differences between living things and non-living things. (4 marks)
| Living Things | Non-Living Things |
|---|---|
| a) They need food/water/air to survive | They do not need food/water/air |
| b) They grow and change | They do not grow on their own |
Other acceptable answers:
- Living things reproduce / Non-living things cannot reproduce
- Living things respond to changes / Non-living things do not respond
- Living things move on their own / Non-living things cannot move on their own
(2 marks for each correct pair)
12. Look at these animals: [Whale, Penguin, Shark, Bat, Crocodile, Salamander] (4 marks)
Mammals: Whale, Bat (1 mark)
Birds: Penguin (1 mark)
Fish: Shark (1 mark)
Reptiles: Crocodile (1 mark)
Note: Salamander is an amphibian - accept if student notes this
13. Fill in the blanks with the correct property of materials: (3 marks)
a) A towel is absorbent because it soaks up water. (1 mark)
b) A glass window is transparent because light can pass through it. (1 mark)
c) A wire can be bent into different shapes because it is flexible. (1 mark)
14. Name ONE natural material and ONE man-made material used in your classroom. (4 marks)
a) Natural material: Wood / Cotton / Paper / Rubber (1 mark)
It is used to make: Desk / Table / Ruler / Eraser / Cloth (1 mark)
b) Man-made material: Plastic / Metal / Glass (1 mark)
It is used to make: Ruler / Chair legs / Pen / Windows (1 mark)
Accept any reasonable natural and man-made material with appropriate use.
15. Complete the life cycle of a mosquito: (3 marks)
Egg → Larva (wriggler) → Pupa (tumbler) → Adult mosquito
(1 mark for each correct stage)
Section B Total: /18
Section C: Application Questions (12 marks)
16. Sarah observed two objects - Object A and Object B. (4 marks)
a) Which object is most likely a living thing? (1 mark)
Answer: Object A
b) Give TWO more observations Sarah could make to confirm if it is living. (2 marks)
Accept any TWO of:
- Check if it needs food/air
- See if it can reproduce/have babies
- Observe if it responds to touch/light/sound
- Check if it moves on its own
- See if it produces waste
(1 mark for each valid observation)
c) Give ONE example of what Object B could be. (1 mark)
Answer: Rock / Stone / Plastic toy / Metal object / Glass ornament
Accept any non-living object
17. Mr. Tan wants to build a fish tank. (4 marks)
a) What material should he use for the walls? Why? (2 marks)
Material: Glass (1 mark)
Reason: Glass is transparent, so Mr. Tan can see the fish inside. / Light can pass through for the fish and plants. (1 mark)
b) What material should he use for the stand? Why? (2 marks)
Material: Steel (1 mark)
Reason: Steel is strong/hard and can support the heavy weight of the water-filled tank without breaking. (1 mark)
18. Study this incomplete life cycle: (4 marks)
[A] → Caterpillar → [B] → Butterfly
a) What is [A]? Egg (1 mark)
b) What is [B]? Pupa / Chrysalis (1 mark)
c) This life cycle shows complete metamorphosis. What does this mean? (2 marks)
Answer: Complete metamorphosis means the animal goes through 4 different stages in its life cycle. (1 mark) The young (caterpillar) looks completely different from the adult (butterfly). (1 mark)
Section C Total: /12
Marking Summary
| Section | Maximum Marks | Marks Obtained |
|---|---|---|
| A (MCQ) | 20 | |
| B (Short Answer) | 18 | |
| C (Application) | 12 | |
| Total | 50 |
~ End of Answer Key ~