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Industrial Policy - 1948, 1956, 1973, 1977, 1980, 1991Industrial Policy - 1948, 1956, 1973, 1977, 1980, 1991RKavithamani
Class 4 science
- 12. HARD MATERIALS
• Materials which cannot be easily compressed, cut, bent or
scratched are called hard materials.
Example:
Brick Bone Steel
- 15. SOFT MATERIALS
• Materials which can be easily compressed, cut, bent or
scratched are called soft materials.
Examples:
Foam Clay Skin
- 28. SMOOTH MATERIALS
• Materials which do not have ups and downs on their
surface are called smooth materials.
Examples:
Mirror Silk cloth
Tiles
- 30. ASSIGNMENT
Find the odd one.
1.Brick, bone, clay, iron rod
2.Stainless steel, candle, gold, diamond.
3.Tyre, mirror, silk cloth, tiles.