Collect some samples of cloth materials made up of natural and synthetic fibers. Compare their texture and strength. Make an album/scrapbook by pasting these pieces and writing differences you observed among them.

AcademicBiologyNCERTClass 8

Natural fibers are present in nature, e.g., cotton whereas synthetic fibers are made by man, e.g., nylon.

Natural fibers are better than synthetic fibers because they absorb sweat, give a cooling effect and comfort in any season.


 Natural fibers
 wool, cotton, jute, and silk.
Synthetic fibers
nylon, polyester.

Acrylic is a synthetic fibre which appears to resemble wool. It is flexible, resistant to moth, oil and chemicals. It is used for making sweaters and tracksuits and also for the linings of boots and gloves.

Rayon is the man-made fibre which is regarded as artificial silk. It is obtained by the chemical treatment of wood pulp or cellulose.

The characteristics of synthetic fibres are given below:
  • Synthetic fibres absorb very less water and they dry up quickly.
  • They are durable and are less expensive.
  • They are readily available and are easy to maintain.
  • Due to such unique properties, synthetic fibres are used to make dress materials.

Originally, denim jeans were made from cotton fiber through weaving thus it was considered a natural product. But, with the evolving technology, variants of denim like stretch and lycra are manufactured using synthetic fibers. Thus, jeans can be made of natural or synthetic fibers.

Parachutes are made from light and strong fabric, like nylon.


Parachutes are dome-shaped with rectangles used to carry a variety of loads, such as people, food, equipment, space capsules, and bombs.

Nylon fibers are useful in making rope because of their strong nature.

raja
Updated on 10-Oct-2022 13:28:52

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