GSEB Class 6 Science Solutions Chapter 3 રેસાથી કાપડ સુધી

Textbook Exercise Questions And Answers

Question 1. Classify the following fibers into natural fibers and synthetic fibers: Nylon, wool, cotton, silk, polyester, jute.
Answer:
Natural fibers: Wool, cotton, silk, jute.
Synthetic fibers: Nylon, polyester.
In simple words: We separate fibers into two groups: those that come from nature (plants or animals) and those that are made by humans in factories.

Exam Tip: To score well, remember the source of each fiber. Natural fibers come from plants (like cotton and jute) or animals (like wool and silk), while synthetic fibers (like nylon and polyester) are man-made.

State Whether The Following Statements Are True Or False:

Question 1. Yarns are made from silk.
Answer: False. Threads are not created from silk; silk itself is a fiber we get from silkworms.
In simple words: This statement is wrong. Silk is a fiber that comes from silkworms, and we use fibers to make threads.

Exam Tip: Understand the difference between a fiber and a yarn. Fibers are individual strands, and multiple fibers are twisted together to form yarn.

Question 2. Spinning is the process of making fibers.
Answer: False. Spinning is the process of making yarn from fibers, not making fibers themselves.
In simple words: This statement is incorrect. Spinning takes existing fibers and twists them into yarn, it does not create the fibers.

Exam Tip: Remember that spinning converts fibers into yarn, which is then used to make fabric. Fibers are the raw material.

Question 3. The outer covering of coconut is jute.
Answer: False. The outer layer of a coconut is called coir, not jute. Jute is a different natural fiber.
In simple words: This is not right. The husk on a coconut is called coir, which is a type of fiber, but it's different from jute.

Exam Tip: Be careful not to confuse different types of plant fibers. Coir comes from coconuts, and jute comes from the stem of the jute plant.

Question 4. The process of removing seeds from cotton is called ginning.
Answer: True. This process helps to separate the cotton fibers from their seeds, making them ready for further steps.
In simple words: Yes, this is true. Ginning is how we take out the seeds from cotton to get the clean fibers.

Exam Tip: Knowing the specific terms for fiber processing steps, like ginning for cotton, is crucial for understanding the topic.

Question 5. Fabric is made by weaving threads.
Answer: True. Weaving is a main process where two sets of yarn are arranged together to form fabric.
In simple words: That's correct. Weaving means crossing threads over and under each other to make a piece of cloth.

Exam Tip: Weaving and knitting are the two primary methods used to create fabric from yarn. Understand the difference between them.

Question 6. Silk fibers are obtained from the stem of plants.
Answer: False. Silk fibers are obtained from silkworms, not from the stems of plants. This makes silk an animal fiber.
In simple words: This statement is wrong. Silk comes from silkworms, which are insects, not from any part of a plant.

Exam Tip: Classify fibers correctly by their source. Silk is an animal fiber, while cotton and jute are plant fibers.

Question 7. Polyester is a natural fiber.
Answer: False. Polyester is a man-made, synthetic fiber. It is produced from chemical substances, unlike natural fibers that come from plants or animals.
In simple words: This is incorrect. Polyester is a fiber made by people using chemicals, not something found naturally.

Exam Tip: Synthetic fibers like polyester are known for being strong, durable, and resistant to wrinkles, making them different from natural fibers.

Fill In The Blanks:

Question 1. Plant fibers are obtained from ..........
Answer: Plant fibers are obtained from **cotton plants, jute plants**.
In simple words: Plant fibers are things like cotton and jute, which we get from different types of plants.

Exam Tip: Recall the common sources for various plant-based fibers, such as cotton from cotton bolls and jute from jute stems.

Question 2. ......... and ......... are animal fibers.
Answer: **Silk** and **wool** are animal fibers.
In simple words: The two main fibers we get from animals are silk (from silkworms) and wool (from sheep).

Exam Tip: Always remember that wool comes from sheep and silk comes from silkworms, classifying them as animal-derived fibers.

Question 4. From which parts of the plant are cotton and jute obtained?
Answer: Cotton is gathered from the fruit of the cotton plant, while jute is taken from the stem of the jute plant.
In simple words: Cotton comes from the fruit of the cotton plant, and jute comes from the stem of the jute plant.

Exam Tip: Differentiate between the specific plant parts (fruit, stem, leaves) from which various natural fibers are sourced.

Question 5. Name any two things made from coconut fibers.
Answer: Two items created from coconut fibers are coir ropes and doormats. Other examples include mats and brushes.
In simple words: Things like strong ropes and doormats are often made from the rough fibers of coconuts.

Exam Tip: Think about the practical uses of fibers. Coconut fiber (coir) is known for its durability and water resistance, making it suitable for ropes and mats.

Question 6. Describe the process of making yarn from fibers.
Answer: The process of creating yarn from fibers is called spinning. This is the initial step in making fabric. Fibers are pulled out from a mass of cotton and twisted, which helps them join to create yarn. A basic tool for hand spinning is a hand spindle, known as takli. Another hand-spinning device is the charkha. In big textile factories, machines perform this process.
In simple words: To make yarn from fibers, you twist the fibers together. This process is called spinning. Tools like takli and charkha are used for this, or big machines in factories.

Exam Tip: Understand the concept of spinning and the historical and modern tools used for it. This is a fundamental step in textile production.

Understanding Textbook Activities

Activity 1. To Identify Different Types Of Fabrics.

Materials needed: pieces of various fabrics. Method: Visit a nearby tailor shop. Gather leftover fabric pieces after stitching. Touch each piece to feel the fabric. With the tailor's help, identify each fabric as cotton, silk, wool, or polyester and write down its name. **Observation:** Silk and polyester feel smooth, soft, and shiny to the touch. Cotton fabric feels soft. Wool feels soft and fuzzy. **Conclusion:** By touching different types of fabrics, we can identify which fabric it is.

Activity 2: To Understand That Fabric Is Made Of Yarns.

Materials needed: a piece of cotton fabric, a pin or needle. **Method:** Take a piece of cotton fabric. Pull out any loose thread or yarn from one end. If no loose thread is visible, gently pull one out using a pin or needle. **Observation:** The fabric shows both horizontal and vertical yarns. **Conclusion:** Fabric is made from yarns.

Activity 3: To Understand That Each Yarn Of Fabric Is Made Of Fibers.

Materials needed: cotton fabric. **Method:** Pull out one yarn from a cotton fabric. Place this yarn on a table. Press one end of the yarn with your thumb. Gently rub your nail along the other end of the yarn. Now, examine the other end of the yarn. **Observation:** The other end of the yarn separates into thinner fibers. **Conclusion:** Every yarn is made of fibers.

Activity 4: To Make Yarn From Cotton Fibers.

Materials needed: cotton (or a roll of cotton). **Method:** Take some cotton (or a cotton roll). Using the thumb and forefinger of your other hand, gently pull out the cotton while twisting it. Observe what happens. **Observation:** The fibers join together to form a strong yarn. **Conclusion:** Yarn is made from cotton fibers.

Activity 5: To Understand The Process Of Weaving By Making A Mat From Paper Strips.

Materials needed: two sheets of paper of different colors, scissors. **Method:** Take two sheets of paper of different colors. Cut a square of 30 cm length and the same width from both. Fold both sheets exactly in half. Cut one colored paper sheet into 1 cm wide strips. Starting from the folded part of the second colored paper sheet, cut slits up to 1/2 cm from the opposite end. Open the fold. Weave one strip after another through the cut spaces in the second sheet. The structure formed is a mat made of paper strips. Observe it. **Observation:** The arrangement of paper strips looks similar to how fabric is made. **Conclusion:** In the same way, fabric is created by two groups of yarns.