Natural and manmade materials
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Natural materials come from plants, animals, and rocks, and include wood, cotton, leather, and metal. Man-made materials are produced through chemical processes applied to natural materials, such as plastic, synthetic cloth, and petroleum products. Man-made materials are generally more durable than earlier natural materials due to advances in chemical processing techniques.
Natural and manmade materials
- 2. What are NATURAL materials? • Natural materials are materials that come from plants, animals and rocks.
- 3. What are MAN-MADE materials? • Man-made materials are materials obtained from natural materials through chemical processes.
- 19. Sources Natural Materials Objects Plants Wood Chair, table, cupboard Rubber Balloon, tyre, glove Cotton T-shirt, cloth, scarf Animals Fur Hat, sweater Silk Cloth Leather Handbag, belt, shoes Rocks Metal Spoon, kettle Soil Vase, claypot Table 1: Objects made of natural materials
- 20. Man-made Objects Materials Plastic Containers, ruler, bottle, straw, cup Synthetic cloth Net, tent, raincoat, umbrella (nylon, rayon, polyester) Table 2: Objects made of man-made materials
- 21. Natural materials Man-made materials • Wood • Plastic • Metal • Synthetic cloth • Leather • Soil • Cotton • Fur • Rubber • Silk • Petroleum • Natural gas • Coal
- 22. • Man-made materials are produced from petroleum. • Petroleum is a natural material. • This shows that man-made materials come from natural materials.
- 24. Why Tyre nowadays is more durable than the Tyre in the ancient time?