UNIT 6: MATERIALS IN OUR ENVIRONMENT
Activity INVESTIGATING SOME
PROPERTIES OF MATERIALS
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You learnt that:
• A chair is made of metal, plastic or wood.
• A window pane is made of glass.
• A bottle is made of plastic or glass.
• A car tyre is made of rubber.
Therefore, dierent objects are made of dierent materials.
Let us nd out why.
Using hard and soft materials
Why is the book
made of paper
and not of metal?
Why is the chair
made of wood and
not of paper?
Two friends are asking questions about a chair and a book.
The chair and the book are made of dierent materials.
Let us nd out how the materials are dierent.
1. Why is wood used to make a chair?
...............................................................................................................................................................................................................................
2. Why is paper used to make a book?
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