🔬 Part 1: Material Properties Knowledge

1. Which property best describes a material that allows light to pass through it completely?

Opaque

Translucent

Transparent

Reflective

2. A material that can be bent without breaking is described as:

Brittle

Flexible

Rigid

Porous

3. Which materials would be suitable for making a waterproof raincoat? (Select all that apply)

Plastic

Cotton fabric

Rubber

Paper

Synthetic polymer

4. Steel is chosen for building bridges because it is:

Lightweight and transparent

Strong and durable

Flexible and soft

Cheap and disposable

🧠 Part 2: Critical Thinking & Analysis

5. Compare glass and plastic for making drink bottles. Explain two advantages and one disadvantage of each material.

Glass advantages:

Glass disadvantage:

Plastic advantages:

Plastic disadvantage:

6. A designer needs to choose materials for a playground slide. Explain why metal would be better than wood, considering at least three material properties.

7. Fill in the blanks: Window frames are often made from __________ or __________ because these materials are __________ to weather and provide good __________.

8. Predict what would happen if car tyres were made from hard plastic instead of rubber. Explain your reasoning using material properties.

🔍 Part 3: Hands-On Investigation

9. Material Classification Challenge: Look around your classroom and find 6 different materials. Complete the table below by testing their properties.

Materials to find and test: Paper, metal (paperclip/ruler), plastic (pen/container), fabric, wood, glass/ceramic