NCERT - 7 - Science :: Fibre to Fabric

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Go To: NCERT-Science-Grade 7

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[Contributor - Anu Nived]


Objective: To teach the students about how various animal fibres are processed into fabrics

Subtopics to be covered:

- DIfferent varieties of wool depending on breed of sheep

- Steps to process animal fibre into wool

- Steps to process cocoon into silk

Learning Outcome:

- Students know how wool and silk is made

- They know the life cycle of a silk moth

- They know which animals are reared for getting wool

[Contributor- Arshea Bimal]


1. Select a piece of cotton fabric. Now, try to find a loose thread or yarn at one of the edges and pull it out. If no loose yarns are visible, you can gently pull one out with a pin or a needle. We find that a fabric is made up of yarns arranged together. What are these yarns made of?

2. Take out a yarn from a piece of cotton fabric. Place this piece of yarn on the table. Now, press one end of the yarn with your thumb. Scratch the other end of the yarn along its length with your nail. Do you find that at this end, the yarn splits up into thin strands.

[Contributor - Shachi Patel]


https://drive.google.com/open?id=0BzNF2YyqQxJ-RU5ZdWNKUm9HX1U (Worksheet 1 answer key)

https://drive.google.com/open?id=0BzNF2YyqQxJ-SVNldHlJakx3MW8 (Worksheet 2 answer key)

[Contributor - Fathima Nazar]

Term Transliterated Term Translated Term
Cocoon कोकून कोश, कोया
Fleece फ्लीस कार्तित ऊन
Reeling रीलिंग कोकून में से रेशे निकलने की प्रक्रिया
Scouring स्कॉरिंग अभिमार्जन
Sericulture सेरीकल्चर रेशम के कीड़ों का पालन
Shearing शीयरिंग ऊन कटाई
Silk moth सिल्क मोथ रेशम कीट
Silkworm सिल्क वर्म रेशमी का कीड़ा
Sorting सॉर्टिंग छँटाई, श्रेणीकरण
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