HARD
7th CBSE
IMPORTANT
Earn 100

Draw the life cycle of silkworm and label it. 

Important Questions on Fibre to Fabric

HARD
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 4 - Fibre to Fabric>EXERCISE>Q 3
Explain the process of sericulture. 
MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 4 - Fibre to Fabric>EXERCISE>Q 4
Describe Sorter's disease and respiratory diseases in workers of the wool and silk industry. 
MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 4 - Fibre to Fabric>EXERCISE>Q 1
Air space between the wool fibres traps air inside. How do you think this air trapped between the fibres helps to keep an animal warm? 
HARD
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 4 - Fibre to Fabric>EXERCISE>Q 2
A, B, C and D are four types of fibres. Fibres A and B are obtained from animals whereas fibres C and D are obtained from plants. The yarn from fibre A is used to make sweaters that we wear during winter, whereas the fabric made from fibre B is used to make expensive sarees and other garments. The fibre C is used to make gunny bags whereas fibre D is used to make doorsteps, ropes and coarse clothes. Name the fibres A, B, C and D. 
MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 4 - Fibre to Fabric>EXERCISE>Q 1
When do you think the shearing of wool should be done in summer or in winter? Give reasons. 
HARD
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 4 - Fibre to Fabric>EXERCISE>Q 2

Do you think that animals that give us wool should be given protein-rich food? Write a few points in support of your answer. 

MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 4 - Fibre to Fabric>EXERCISE>FUN ACTIVITIES

Label the different stages in the life cycle of a silk moth.

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HARD
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 4 - Fibre to Fabric>EXERCISE>SKILLS FOR LIFE
It is February and the winter season is ending. Priya plans to store her winter clothes in her cupboard. Write a few ways in which she can store her clothes effectively. Do we need to take care of our summer clothes as well? Why is it that winter clothes need special maintenance during storage? Write any three ways in which we can store woollen clothes effectively.