Question

Garden Valley International School, MorindaClass: VII (session: 2019-2020) Subject: Science Chapter-3Answer these questions:1. Which animal material is used to weave fine, soft shawls called pashmina?2. Where are the sheep kept in winters?3. Name the most common silk moth. Mulavoiy suits moth4. What treatment is given to the cocoons to separate out the threads?5. How many eggs can a female silk moth lay? 200 - 3006. Give reasons- a. why it hurts when someone pulls his hair but not when hegoes for a haircut?b. why a cotton garment cannot kept us warm in winter as woollen sweatercan?7. What are called occupational hazards and selective breeding?​

Answer 1

Answer:

Explanation:

1 . wool of baby pashmina sheep

2 . sheeps are kept in stables and outdoor most of the time

3 . Mulberry silk moth

4 . .Cocoons are collected and kept under the sun, or boiled, or exposed to steam. This helps in separating out the silk fibres. The process by which silk thread is separated from the cocoon is called reeling the silk. 2.Then, the spinning of silk fibres into threads is done

5. 500

a ) because in hair cut the root of hair is not pulled out

b )  Cotton clothes are thin and do not have space in which air can be trapped. Thus, cotton clothes do not prevent heat coming out of our body. Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres.