Introduction
Why is plastic suitable for making a raincoat?
This PSLE Science Materials Raincoat Question tests students on understanding material properties and choosing the correct characteristics based on daily-life applications.
In this blog, we walk through the exact teacher explanation to help Primary 3 students answer this question confidently in exams.
The Question
The diagram below shows a raincoat.
Plastic is a suitable material for making a raincoat because it is ______.
Options given:
- (A) fragile
- (B) flexible
- (C) waterproof
- (D) absorbent
Which option is correct?
Step-by-Step Explanation
Let’s analyse each property carefully using PSLE Science concepts:
❌ Fragile
- Fragile means easily broken.
- A raincoat must be durable, not fragile.
➡️ Eliminate (A)
✅ Flexible
- A raincoat must bend and move with the body.
- Plastic allows easy movement.
➡️ Keep (B)
✅ Waterproof
- A raincoat must prevent water from passing through.
- Plastic does not allow water to seep in.
➡️ Keep (C)
❌ Absorbent
- Absorbent materials soak up water.
- Raincoats must repel water, not absorb it.
➡️ Eliminate (D)
Final Answer
✔ Option (3): B and C
Plastic is flexible and waterproof, making it suitable for a raincoat.
Key Concepts
| Concept | Explanation |
| Waterproof | Prevents water from passing through |
| Flexible | Can bend without breaking |
| Absorbent | Soaks up water (not suitable) |
| Fragile | Breaks easily (not suitable) |
Common Mistakes
❌ Choosing “absorbent” because students confuse raincoats with towels
❌ Thinking “fragile” applies to thin plastic
❌ Selecting only one correct property instead of two
Tips for Students
✔ Think about real-life use
✔ Ask: “Does this material allow water in?”
✔ Always eliminate opposites (absorbent vs waterproof)
✔ Look for two correct properties, not just one
For Parents
This PSLE Science Materials Raincoat Question builds:
- Observation skills
- Logical reasoning
- Daily-life science application
Mastering material properties early helps students excel in upper primary PSLE Science questions.