NCERT Class 7 Science Fibre to Fabric

Read and download NCERT Class 7 Science Fibre to Fabric in NCERT book for Class 7 Science. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Science textbook for Class 7 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 7 Science to understand the answers of the exercise questions given at the end of this chapter

NCERT Book for Class 7 Science Chapter 3 Fibre to Fabric

Class 7 Science students should refer to the following NCERT Book Chapter 3 Fibre to Fabric in Class 7. This NCERT Book for Class 7 Science will be very useful for exams and help you to score good marks

Chapter 3 Fibre to Fabric NCERT Book Class 7

 

3.Fibre to Fabric

In Class VI you have learnt about some fibres obtained from plants. You also learnt that wool and silk fibres are obtained from animals. Wool is obtained from the fleece (hair) of sheep or yak. Silk fibres come from cocoons of the silk moth. Do you know which part of the sheep’s body yields fibres? Are you aware how these fibres are converted into the woollen yarn that we buy from the market to knit sweaters? Do you have any idea how silk fibres are made into silk, which is woven into saris? In this Chapter we shall try to find answers to these questions.

Animal fibres — wool and silk

3.1 WOOL

Wool comes from sheep, goat, yak and some other animals. These wool-yielding animals bear hair on their body. Do you know why these animals have a thick coat of hair? Hair trap a lot of air. Air is a poor conductor of heat, as you would learn in Chapter 4. So, hair keeps these animals warm. Wool is derived from these hairy fibres.

Activity 3.1

Feel the hair on your body and arms and those on your head. Do you find any difference? Which one seems coarse and which one is soft?

Like us, the hairy skin of the sheep has two types of fibres that form its fleece: (i) the coarse beard hair, and (ii) the fine soft under-hair close to the skin. The fine hair provide the fibres for making wool. Some breeds of sheep possess only fine under-hair. Their parents are specially chosen to give birth to sheep which have only soft underhair. This process of selecting parentsfor obtaining special characters in their offspring, such as soft under hair in sheep, is termed ‘selective breeding’.

Animals that yield wool

Several breeds of sheep are found in different parts of our country (Table 3.1). However, the fleece of sheep is not theonly source of wool, though wool commonly available in the market is sheep wool (Fig. 3.1). Yak (Fig. 3.2) wool is common in Tibet and Ladakh. Angora wool is obtained from angora goats, (Fig. 3.3) found in hilly regions such as Jammu and Kashmir.

Wool is also obtained from goat hair (Fig. 3.4). The under fur of Kashmiri goat is soft. It is woven into fine shawls called Pashmina shawls. The fur (hair) on the body of camels is also used as wool (Fig. 3.5). Llama and Alpaca, found in South America, also yield wool (Fig. 3.6 and 3.7).

Exercises

1. You must be familiar with the following nursery rhymes:

(i) ‘Baa baa black sheep, have you any wool.’

(ii) ‘Mary had a little lamb, whose fleece was white as snow.’

Answer the following:

(a) Which parts of the black sheep have wool?

(b) What is meant by the white fleece of the lamb?

2. The silkworm is (a) a caterpillar, (b) a larva. Choose the correct option.

(i) a    (ii) b     (iii) both a and b     (iv) neither a nor b.

3. Which of the following does not yield wool?

(i) Yak     (ii) Camel      (iii) Goat     (iv) Woolly dog

4. What is meant by the following terms?

(i) Rearing    (ii) Shearing     (iii) Sericulture

5. Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them.

Shearing, __________, sorting, __________, __________.

6. Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.

7. Out of the following, which are the two terms related to silk production?

Sericulture, floriculture, moriculture, apiculture and silviculture.

Hints: (i) Silk production involves cultivation of mulberry leaves and rearing silkworms.

          (ii) Scientific name of mulberry is Morus alba.


Please refer to attached file for NCERT Class 7 Science Fibre to Fabric

Chapter 01 Nutrition in Plants
NCERT Class 7 Science Nutrition in Plants
Chapter 02 Nutrition in Animals
NCERT Class 7 Science Nutrition in Animals
Chapter 03 Fibre to Fabric
NCERT Class 7 Science Fibre to Fabric
Chapter 05 Acids, Bases and Salts
NCERT Class 7 Science Acids Bases and Salts
Chapter 06 Physical and Chemical Changes
NCERT Class 7 Science Physical and Chemical Changes
Chapter 07 Weather, Climate and Adaptations of Animals to Climate
NCERT Class 7 Science Weather Climate and Adaptation
Chapter 08 Winds, Storms and Cyclones
NCERT Class 7 Science Winds Storms and Cyclones
Chapter 10 Respiration in Organisms
NCERT Class 7 Science Respiration in Organisms
Chapter 11 Transportation in Animals
NCERT Class 7 Science Transportation in Animals
Chapter 12 Reproduction in Plants
NCERT Class 7 Science Reproduction in Plants
Chapter 13 Motion and Time
NCERT Class 7 Science Motion and Time
Chapter 14 Electric Current and its Effects
NCERT Class 7 Science Electric Current and its Effects
Chapter 16 Water: A Precious Resource
NCERT Class 7 Science Water A Precious Resource
Chapter 17 Forests: Our Lifeline
NCERT Class 7 Science Forests Our Lifeline
Chapter 18 Wastewater Story
NCERT Class 7 Science Wastewater Story

Science NCERT Book Class 7 Chapter 3 Fibre to Fabric

The above NCERT Books for Class 7 Science Chapter 3 Fibre to Fabric have been published by NCERT for latest academic session. The textbook by NCERT for Chapter 3 Fibre to Fabric Science Class 7 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Chapter 3 Fibre to Fabric NCERT etextbooks as the exams for Class 7 Science are always asked as per the syllabus defined in these ebooks. These Class 7 Chapter 3 Fibre to Fabric book for Science also includes collection of question. We have also provided NCERT solutions for Class 7 Science which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 7 students.

NCERT Book Class 7 Science Chapter 3 Fibre to Fabric

The latest NCERT book for Chapter 3 Fibre to Fabric pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 7 Science Chapter 3 Fibre to Fabric are designed to enhance the overall understanding of students. All Class 7 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 7 students. 

Chapter 3 Fibre to Fabric NCERT Book Class 7 Science

As the students of Class 7 need the books for their regular studies, we have provided all NCERT book for Chapter 3 Fibre to Fabric in pdf here for free download. All pdf NCERT books available here for Class 7 will help them to read on their mobile or computers. They can take a print of the Class 7 Science NCERT Book Chapter 3 Fibre to Fabric pdf easily and use them for studies. The NCERT textbooks for Class 7 Science have been provided chapter-wise and can be downloaded for free of cost. 

Class 7 Science Chapter 3 Fibre to Fabric NCERT Book

Along with Science Class 7 NCERT Book in Pdf for Chapter 3 Fibre to Fabric we have provided all NCERT Books in English Medium for Class 7 which will be really helpful for students who have opted for english language as a medium. Class 7 students will need their books in English so we have provided them here for all subjects in Class 7.

Class 7 Chapter 3 Fibre to Fabric NCERT Book Science

For Class 7 Chapter 3 Fibre to Fabric we have provided books for students who have opted for Hindi and Urdu medium too. You can click on the links provided above to download all Hindi medium Class 7 Science Chapter 3 Fibre to Fabric book in easy to read pdf format. These books will help Class 7 Science students to understand all topics and also strictly follow latest syllabus for their studies. If you are looking to download the pdf version of Class 7 Science Chapter 3 Fibre to Fabric textbook issued by NCERT then you have come to the correct website

Where can I download latest NCERT Book for Class 7 Science Chapter 3 Fibre to Fabric

You can download the NCERT Book for Class 7 Science Chapter 3 Fibre to Fabric for latest session from StudiesToday.com

Can I download the NCERT Books of Class 7 Science Chapter 3 Fibre to Fabric in Pdf

Yes, you can click on the link above and download chapter wise NCERT Books in PDFs for Class 7 for Science Chapter 3 Fibre to Fabric

Are the Class 7 Science Chapter 3 Fibre to Fabric NCERT Book available for the latest session

Yes, the NCERT Book issued for Class 7 Science Chapter 3 Fibre to Fabric have been made available here for latest academic session

How can I download the Class 7 Science Chapter 3 Fibre to Fabric NCERT Book

You can easily access the link above and download the Class 7 NCERT Books Science Chapter 3 Fibre to Fabric for each chapter

Is there any charge for the NCERT Book for Class 7 Science Chapter 3 Fibre to Fabric

There is no charge for the NCERT Book for Class 7 Science Chapter 3 Fibre to Fabric you can download everything free

How can I improve my scores by reading NCERT Book in Class 7 Science Chapter 3 Fibre to Fabric

Regular revision of NCERT Books given on studiestoday for Class 7 subject Science Chapter 3 Fibre to Fabric can help you to score better marks in exams