Properties of materials

1. CLASS 4
SUBJECT: SCIENCE
TOPIC: MATTER AND MATERIALS
SUB. TOPIC: PROPERTIES OF
MATERIALS
PART 13

4. •Hard- soft
•Shiny- dull
•Rough- smooth

5. Clay Skin

6. FLEXIBLE
AND
RIGID
WATERPROOF

7. RUBBER BAND
WOODEN SCALE

8. Stretching of Rubber band

9. WOODEN SCALE

10. FLEXIBLE MATERIALS
Materials which can be bent or stretched
easily are known as flexible materials.
Example:
RUBBER BAND
CYCLE TUBEELECTRIC WIRE

11. RIGID MATERIALS
Materials which cannot be bent or
stretched easily are known as rigid materials.
Examples:
Wooden scale
A stick Stone

12. CLAY

13. RAIN

14. UMBRELLA

15. RAINCOAT

18. WATERPROOF MATERIALS
• Materials which do not allow water to pass through
them are called Waterproof materials.
Examples:
RAINCOAT ALUMINIUM FOIL OF TABLET STRIP

19. EXPERIMENT

20. GLASS

21. GLASS WITH WATER

22. ORANGE IN WATER

27. ASSIGNMENT
Match the following
1. Flexible material- raincoat 3
2. Rigid material- rubber band 1
3. Water proof material- wooden scale 2
Answer the following
1.What are waterproof materials?
2.What are rigid materials?