Page 234 - Science Course 3 (Book 1)

Mo6-L2c: What are Fibers and Their Uses?

Spandex is a lightweight, soft smooth synthetic Key Concept
fiber which has a unique elasticity (can be stretched
and returns to original shape). It is water-resistant What are Fibers and Their Uses?
and a good thermal insulator. It is used for athletic
wear. What are fibers?

Kevlar is a heat-resistant and strong synthetic fiber.
It is very strong and hard. It is used to make safety
equipment and bulletproof vests.

SUMMARY

What are Fibers and Their Uses?
Silk is a natural protein fiber produced by insects
as a material for their nests and cocoons. It is soft, There are many types of fibers. Some fibers
flexible and light (low density). It is used to make are natural from plants or animals and some
clothes, upholstery (on furniture), and parachutes. are man-made.

Fibers have different properties such as
strength and insulators of heat.

Hemp, or industrial hemp, is a variety of the Canna-
bis sativa plant species that is grown specifically for
industrial use. It is flexible and strong. It is used to
make ropes and fabrics

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