Primary 3 Science Weighted Assessment 1 (Term 1) Paper 3

TUITIONGOWHERE PRIMARY SCHOOL (AI)

WEIGHTED ASSESSMENT 1 EXAMINATION 2026

PRIMARY 3 SCIENCE (VERSION 3)

Duration: 45 minutes
Total Marks: 50

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INSTRUCTIONS TO STUDENTS

1. Do not turn over this page until you are told to do so.
2. Answer all questions.
3. Write your answers clearly in the spaces provided.

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Name: _________________________ ( )
Class: Primary 3 ( )
Date: _________________________

Section	Marks
A (MCQ)	/20
B (Short Answer)	/18
C (Application)	/12
Total	/50

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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 statement about living things is TRUE? (2 marks)

1. All living things can walk
2. All living things need water
3. All living things have legs
4. All living things live on land

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2. A robot can move and make sounds. Why is it NOT a living thing? (2 marks)

1. It is made of metal
2. It cannot grow or reproduce
3. It is too big
4. It moves too slowly

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3. Which animal breathes using gills throughout its life? (2 marks)

1. Whale
2. Frog
3. Salmon
4. Turtle

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4. Which group of animals has fur and gives birth to live young? (2 marks)

1. Birds
2. Reptiles
3. Mammals
4. Amphibians

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5. A material that does NOT let light pass through is called: (2 marks)

1. Transparent
2. Translucent
3. Opaque
4. Reflective

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6. Which property allows a sponge to clean up spilled water? (2 marks)

1. Hardness
2. Flexibility
3. Absorbency
4. Transparency

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7. Leather comes from animal skin. This makes leather a: (2 marks)

1. Man-made material
2. Natural material
3. Synthetic material
4. Artificial material

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8. Why is metal used to make cooking pots? (2 marks)

1. It is light
2. It is soft
3. It conducts heat well
4. It is transparent

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9. How many stages are there in a frog's life cycle? (2 marks)

1. 2 stages
2. 3 stages
3. 4 stages
4. 5 stages

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10. Which of these is the correct order of a bean plant's life cycle? (2 marks)

1. Seed → Seedling → Flower → Plant → Fruit
2. Seed → Plant → Seedling → Flower → Fruit
3. Seed → Seedling → Plant → Flower → Fruit
4. Seedling → Seed → Plant → Flower → Fruit

( )

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Section B: Short Answer Questions (18 marks)

Answer the questions clearly.

11. A Venus flytrap is a plant that catches and eats insects. (3 marks)

Give THREE reasons why it is classified as a living thing.

a) _________________________

b) _________________________

c) _________________________

12. Complete the table by writing ONE example for each animal group: (4 marks)

Animal Group	Body Covering	Example
Mammals	Fur or hair	_________
Birds	Feathers	_________
Reptiles	Dry scales	_________
Fish	Wet scales	_________

13. Study these materials and answer the questions: (4 marks)

[Rubber, Diamond, Tissue paper, Aluminium foil]

a) Which material is the HARDEST? _____________

b) Which material is the MOST flexible? _____________

c) Which material is the MOST absorbent? _____________

d) Which material TEARS most easily? _____________

14. State whether each material is NATURAL or MAN-MADE: (4 marks)

a) Wool from sheep: _____________

b) Plastic bottle: _____________

c) Wooden chair: _____________

d) Nylon rope: _____________

15. Put the stages of a cockroach's life cycle in order: (3 marks)

[Adult cockroach, Egg, Nymph]

_____________ → _____________ → _____________

Why is this called INCOMPLETE metamorphosis?

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Section C: Application Questions (12 marks)

Use your knowledge to answer these questions.

16. David placed two objects under a lamp for a week: (4 marks)

Object X: Got taller, developed new parts Object Y: Stayed the same size and shape

a) Which object is likely to be living? Explain. (2 marks)

Object: _____________

Explanation: _____________________________________________

b) What could Object X be? Give TWO possible examples. (2 marks)

Example 1: _____________________________________________

Example 2: _____________________________________________

17. A toy company is designing a new bath toy for children. They need to choose materials. (4 marks)

Available materials: Wood, Rubber, Paper, Iron

a) Which material is BEST for the bath toy? Give TWO reasons. (2 marks)

Material: _____________

Reason 1: _____________________________________________

Reason 2: _____________________________________________

b) Which material should they AVOID? Why? (2 marks)

Material: _____________

Reason: _____________________________________________

18. The diagram shows part of a life cycle: (4 marks)

Egg → Larva → ? → Adult Beetle

a) What is the missing stage? _____________

b) What type of metamorphosis is this? _____________

c) Name TWO other animals that have the SAME type of life cycle. (2 marks)

Animal 1: _____________

Animal 2: _____________

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~ End of Paper ~

TUITIONGOWHERE PRIMARY SCHOOL (AI)

WEIGHTED ASSESSMENT 1 EXAMINATION 2026

PRIMARY 3 SCIENCE (VERSION 3) - ANSWER KEY

Duration: 45 minutes
Total Marks: 50

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Section A: Multiple Choice Questions (20 marks)

Each question carries 2 marks.

Question	Answer	Explanation
1	(2)	All living things need water to survive. Not all living things can walk (plants cannot), have legs (snakes, fish), or live on land (fish, whales).
2	(2)	A robot cannot grow bigger or reproduce (have baby robots). These are key characteristics of living things that robots lack.
3	(3)	Salmon (fish) breathe using gills throughout life. Whales breathe with lungs, frogs use gills as tadpoles then lungs, turtles use lungs.
4	(3)	Mammals have fur/hair and give birth to live young (most). Birds lay eggs, reptiles lay eggs, amphibians lay eggs in water.
5	(3)	Opaque materials do not let light pass through (e.g., wood, metal). Transparent lets all light through, translucent lets some light through.
6	(3)	Absorbency allows a sponge to soak up water. The sponge has many tiny holes that trap and hold water.
7	(2)	Leather comes from animal skin, making it a natural material. It is not manufactured in a factory from chemicals.
8	(3)	Metal conducts heat well, allowing heat to transfer quickly to cook food. Being transparent or soft would not help cooking.
9	(3)	A frog has 4 stages: Egg → Tadpole → Froglet → Adult Frog. This is complete metamorphosis.
10	(3)	The correct order is: Seed → Seedling → Plant → Flower → Fruit. The seed germinates into a seedling, grows into a plant, flowers, then produces fruit.

Section A Total: /20

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Section B: Short Answer Questions (18 marks)

11. A Venus flytrap is a plant that catches and eats insects. (3 marks)

Accept any THREE of:

• It grows (increases in size)
• It needs water/air/nutrients
• It responds to touch (closes trap when insect lands)
• It can reproduce (makes seeds)
• It makes its own food through photosynthesis
• It is made of cells

(1 mark for each correct reason)

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12. Complete the table by writing ONE example for each animal group: (4 marks)

Animal Group	Body Covering	Example
Mammals	Fur or hair	Dog / Cat / Elephant / Lion / Whale / Bat
Birds	Feathers	Eagle / Chicken / Penguin / Sparrow / Owl
Reptiles	Dry scales	Snake / Lizard / Crocodile / Turtle / Gecko
Fish	Wet scales	Goldfish / Salmon / Shark / Tuna / Clownfish

(1 mark for each correct example)

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13. Study these materials and answer the questions: (4 marks)

[Rubber, Diamond, Tissue paper, Aluminium foil]

a) Which material is the HARDEST? Diamond (1 mark)

b) Which material is the MOST flexible? Rubber (1 mark)

c) Which material is the MOST absorbent? Tissue paper (1 mark)

d) Which material TEARS most easily? Tissue paper (1 mark)

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14. State whether each material is NATURAL or MAN-MADE: (4 marks)

a) Wool from sheep: Natural (1 mark)

b) Plastic bottle: Man-made (1 mark)

c) Wooden chair: Natural (1 mark)

d) Nylon rope: Man-made (1 mark)

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15. Put the stages of a cockroach's life cycle in order: (3 marks)

Egg → Nymph → Adult cockroach (1 mark for correct order)

Why is this called INCOMPLETE metamorphosis?

Answer: Because there are only 3 stages (not 4), and the nymph looks similar to the adult, just smaller. There is no pupa stage. (2 marks)

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Section B Total: /18

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Section C: Application Questions (12 marks)

16. David placed two objects under a lamp for a week: (4 marks)

a) Which object is likely to be living? Explain. (2 marks)

Object: Object X (1 mark)

Explanation: Object X grew taller and developed new parts. Growing is a characteristic of living things. Non-living things do not grow on their own. (1 mark)

b) What could Object X be? Give TWO possible examples. (2 marks)

Example 1: A plant / bean sprout / seedling (1 mark)

Example 2: A young animal / tadpole / caterpillar (1 mark)

Accept any reasonable living thing that can grow under a lamp

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17. A toy company is designing a new bath toy for children. (4 marks)

a) Which material is BEST for the bath toy? Give TWO reasons. (2 marks)

Material: Rubber (0.5 mark)

Reason 1: Rubber is waterproof - it will not absorb water or get damaged in water. (0.5 mark)

Reason 2: Rubber is soft and flexible - it is safe for children and will not hurt them. (0.5 mark)

Also accept: Rubber floats in water / Rubber is durable

b) Which material should they AVOID? Why? (2 marks)

Material: Paper OR Iron (1 mark)

Reason:

• Paper: It will absorb water, become soggy and tear/fall apart quickly.
• Iron: It will rust when exposed to water and is too heavy (will sink).

(1 mark for valid reason)

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18. The diagram shows part of a life cycle: (4 marks)

Egg → Larva → ? → Adult Beetle

a) What is the missing stage? Pupa (1 mark)

b) What type of metamorphosis is this? Complete metamorphosis (1 mark)

c) Name TWO other animals that have the SAME type of life cycle. (2 marks)

Animal 1: Butterfly / Moth (1 mark)

Animal 2: Mosquito / Fly / Bee / Ant (1 mark)

Accept any insect with complete metamorphosis (4 stages)

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Section C Total: /12

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Marking Summary

Section	Maximum Marks	Marks Obtained
A (MCQ)	20
B (Short Answer)	18
C (Application)	12
Total	50

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~ End of Answer Key ~