Page 32 - Science Class 07

D. Very short answer ques ons.
1. Where and when was the origin of making tensile from silk discovered from?

2. What do you mean by fibres?
3. Name any three natural fibres.
4. Name any three ar ficial fibres.

5. Where do we obtain silk from?
6. Name the animals which give us wool.
7. What do you mean by worsted cloth?
E. Short answer ques ons.

1. How do we obtain silk?
2. How silk is commercially produced?
3. Describe Mulberry and Tussar silk.

4. Write the uses of silk.
5. How wool is obtained?
6. Write the uses of wool.
F. Long answer ques ons.

1. What is the importance of clothing in our daily life?
2. What is sericulture? Explain.
3. Describe the different types of silk. Also, explain the uses of silk.
4. What is wool? Describe major varie es of wool.

5. Write the process involved in the produc on of wool.

Project
Project ActivityActivityActivity
Project
Project Activity
A. Try to know more about fine quality of wool produced in Australia and South Africa and
prepare a project.
B. Men on the ways through which the people of India could also produce fine quality of wool.

C. In an outline map of India, mark the places known for the produc on of silk.

HO
HO
HOTSTSTS
HOTS
A. Which of these fabrics traps air the most — silk, wool or co on?
B. Why is sheep shearing not done during the cold season?

C. Does shearing hurt the sheep?

32 Science-7