Page 30 - Science Class 07

Worsted : This type of woollen cloth is spun v Stuffing for furniture can be made from
from combed wool fibres of same length. wool and recycled wool can be u lised to
Worsted cloth has a smooth surface with make insula on and sound proofing.
minimum fuzziness. v Other uses for wool include lining pads for

Woollen : Woollen cloth is made from wool other types of flooring, such as floa ng
fibres which vary in length. But woollen cloth wood floors.
feels so and has a fuzzy appearance.

Uses of Wool
v Wool is used to make woollen clothes like
shawls, sweaters, gloves, cardigans, socks, In South Africa, merino sheep are reared in
etc. grasslands. These grasslands are called veldt
in South Africa. Australia is the largest and
v Wool is also used to make carpet, blanket,
etc. South Africa is the second fine quality wool
producers in the world.
v Wool is also used for sound-proofing.

Cloth : The sheet prepared after weaving fibres
Clothes : Dress materials made out of cloth by cutting, stitching, ironing, etc.

Fibres : Long filaments which are used to make cloth
Sericulture : The art of breeding silkworm for commercial use

Handloom : Hand driven equipments to make cloth
Powerloom : Machines which run on external power to make cloth
Fleece : Coat of hair on a sheep’s body
Carding : Combing the loose wool fibres into a sheet

Let's R
Let's R
Let's R
Let's Revise evise evise evise evise evise evise
Let's R
Let's R
Let's R
i Different clothing styles depend on occasions and social situations.
i Fibres are the raw materials which we use to make thread and then yarn.
i Fibres obtained after synthesising chemicals and proteins are called artificial fibres.
i A fabric with a thousand years of history, silk is acclaimed for its smooth, lustrous texture
that makes it comfortable to wear in both winter climates and warmer seasons.
i There are different types of silk, e.g., Mulbery, Tussar, Muga, Crepe, Tram, etc.

i Sheep grow wool on their bodies in the same way people grow hair.
i The quality of wool is determined by the fineness of cloth, the number of crimps per unit
length and the cleanliness of the fibre.

30 Science-7