SCIENCE WORKSHEET CLASS - VI CH - 3 _ FIBRE TO FABRIC 1 - From which parts of the respective plants are cotton and jute obtained? What is spinning? Name some hand operated devices used for spinning. 2 - Mention five differences between weaving and knitting? 3 - Explain the processes involved in wool production. 4 - What is the name of the fibre obtained from coconut? Name two items that are made from coconut fibre. 5 - What do you mean by ginning of cotton? How is it done? 6 - What is the source of silk fibre?
Answers
Answer:
1. Cotton is obtained from the fruit part of plant and Jute is obtained from the stem of the plant.
2. Knitting is the process wherein thread – or sometimes yarn – is made into cloth and other crafts. It consists of stitches (or loops) of the material consecutively run together. Weaving, on the other hand, is the process in which two types of yarn or threads are interlaced together to form a fabric or cloth.
3. The different processes involved in wool production are shearing, scouring, grading, dyeing, and drying. The process of removal of the fleece from an animal is called shearing. Sheep are usually shorn annually in the spring/summer months.
4. The fibre obtained from coconut is coconut fibre. The two items that are made from coconut fibre are ropes and mats. Ropes and mats are made from coir which is the fibrous material between the hard-inner shell and the outer coat of a coconut.
5. Ginning is the process of removing the seeds and debris from cotton. The term comes from the cotton gin, invented by Eli Whitney in 1794. In modern ginning, the cotton is first dried to remove moisture, then cleaned to remove any burs, stems, leaves, or other foreign matter.The cotton picked up from the plants has seeds in it. The process of removing cotton seeds from pods is called ginning. Ginning was traditionally done by hand. Now-a-days, machines are used in ginning.
6. Silkworm is the source of silk fibre.
Answer:
cotton is obtained from cotton bolls which are the fruits produced by cotton plant.
jute is obtained from the stem of jute plants.
spinning: the process of obtaining yarn from fibres is called spinning.
takli or a spinning wheel charkha.
4.coir is obtained from the outer covering of coconuts.