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Fibre To Fabric

Class 6th Science CBSE Solution
Exercise
  1. Classify the following fibres as natural or synthetic: Nylon, wool, cotton, silk,…
  2. State whether the following statements are true or false: a. Yarn is made from fibres. b.…
  3. Fill in the blanks:a. Plant fibres are obtained from ______ and ______.b. Animals fibres…
  4. From which part of the plant cotton and jute are obtained?
  5. Name any two items that are made from coconut fibre.
  6. Explain the process of making yarn from fibre.
Exercise
Question 1.

Classify the following fibres as natural or synthetic:
Nylon, wool, cotton, silk, polyester, jute
Answer:

The fibers are classified in the following table:

The natural fibers are those which are obtained from the plants, animals or any other natural source.

The synthetic fibers are those which are man-made fibers.


Question 2.

State whether the following statements are true or false:

a. Yarn is made from fibres.

b. Spinning is a process of making fibres.

c. Jute is the outer covering of coconut.

d. The process of removing seed from cotton is called ginning.

e. Weaving of yarn makes a piece of fabric.

f. Silk fibre is obtained from the stem of a plant.

g. Polyester is a natural fibre.
Answer:

a. True, Yarn is made up of thinner strands called fibres.

b. False, the process of making yarn from fibres is called spinning.


c. False, Jute is a type of fibre obtained from plants.


d. True, the process of removing seed from cotton is called ginning. Ginning was traditionally done by hand.


e. True, the process of making a piece of fabric by arranging two sets of yarn together is called weaving.


f. False, Silk fibre is drawn from the cocoon of silkworm.


g. False, Polyester is not obtained from plant or animal sources. It is made from chemical substances. Hence, it is a synthetic fibre.
Question 3.

Fill in the blanks:
a. Plant fibres are obtained from ______ and ______.
b. Animals fibres are ______ and _______.
Answer:

a. The plant fibres are obtained from cotton and jute.

These fibres cotton and jute. are mainly composed plant materials cellulose and lignin.

b. Animals fibres are silk and wool.

Animals fibres like silk and wool are obtained from sheep and other animals.


Question 4.

From which part of the plant cotton and jute are obtained?
Answer:

(a) Cotton: It is obtained from the fruit of the cotton plant.

(b) Jute: It is obtained from the stem of jute plant.
Question 5.

Name any two items that are made from coconut fibre.
Answer:

Two items that are made from coconut fibre are: i. Bags, ii. Rope.
Question 6.

Explain the process of making yarn from fibre.
Answer:

Yarn is a type of spun thread which can be used for threading, sewing or knitting. Yarn is made using fibres which can be natural or synthetic. The process by which yarn is made is known as spinning. Spinning involves drawing out strands of fibre from the material being used and twisting them together. We often use devices like Takli or Charkha (spinning wheel) for spinning.