Question 5
Explain why woollen garments keep us warm in winter?
Question 6
Why shearing is done before winter season?
Question 7
Why shearing does not hurt the sheep?
Question 8
What are occupational hazards? Name one occupational hazard.
Question 9
How will you distinguish between natural silk & Artificial silk?
Question 10.
Draw well labelled diagram of life history of silk moth in sequence
Answers
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Answer:
Answer 5...The air in the pores acts as an insulator and does not allow the body heat to go out and helps in keeping us warm during colder conditions.
Answer 6...sheep shearing is always done after winters so that they do not feel warm in hot summer days and the furs again grow before the winters. if the sheep will be sheared in the winters then they will die from cold. SHEEP SHEARING IS ALWAYS DONE IN WINTER BECAUSE THE WOOL IS USED TO KEEP THE SHEEP'S BODY WARM.
Answer 7.....Cutting or shaving the wool off of a sheep is called shearing. Shearing doesn't usually hurt a sheep. It's just like getting a hair cut. However, shearing requires skill so that the sheep is shorn efficiently and quickly without causing cuts or injury to the sheep or shearer.
Answer 8....An occupational hazard is a disease which we get due to our occupation. An example is the sorters disease . ... Some examples of the occupational hazards are: Excessive noise and heat are commonly found problems in industries, which can affect the hearing of workers.
Answer 9.....The fabric which burns giving a smell of burning hair will be natural silk or pure silk. 2. The fabric which burns giving a smell of burning paper will be artificial silk. Just like silk, wool is also made up of proteins.
Answer:
6.Woollen garments keeps us warm as the are bad conductors of heat and don't allow heat to escape from our body.
7.Shearing is done before or after winter season bcz if they will loose their hair then will feel cool.
8.As we don't get hurted while getting haircut similarly the sheep doesn't get hurted while shearing.
others I don't know