Page 39 - Science Class 06

1. Name the important sources of clothing materials.
2. Name important plants fibres.
3. Write geographical condi ons required for jute plants.
ANIMAL FIBRES
Wool
Wool is one of the most important animal
fibres. It mostly comes from the long curly
hair of the sheep. Though most of the wool
we get from sheep yet a number of other
varie es of wool are derived from goats.
The long silky hair of angora goats are used
to make high quality woollen goods. Angora
goats are reared mainly in South Africa and
some Asian countries. The so curly hair of
Kashmir goats (Pashmina) is produced in
Western Himalayas. It is used for making
Kashmiri shawls and other high quality
kni ed garments.
Proper es of Wool
The characteris cs of wool fiber or protein
fibers are as follows:
v They are composed of amino acids.
v They have excellent absorbency.
v Moisture regain is high.
v They tend to be warmer than others.
v They have poor resistance to alkalis, but
good resistance to acids.
v They have good elas city and resiliency.
Sheep do not feel pain when
they are sheared.
Science-6
Making of Wool
Firstly, the so hair of sheep or goats are
sheared from their bodies. Therea er, it is
cleaned and washed. When it becomes
more so , it is spun into yarn called wool.
Finally, wool is kni ed into garments and
other woollen ar cles. In India, many
woollen mills are situated in Ludhiana,
Kanpur, Jalandhar, Ajmer and Agra.
Aim : To understand weaving.
Materialas needed : Chart papers of two
different colours (say, red and yellow),
ruler, pencil and scissors.
Method :
1. Cut square pieces of length and width
equal to 30 cm from each sheet.
2. Fold the sheets into half. Draw lines
on them as shown.
3. Cut both the sheets along the lines
and then unfold.
4. Weave the strips of sheet A, one at
each me, through the slits in sheet B.
This is exactly how two sets of threads are
woven to make fabric! Try this with
different colours. Cover them with
transparent sheets to make colourful
table mats!
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