Class 7 Exam > Class 7 Videos > Advance Learner Course: Science Class 7 > What are Natural and Synthetic Fibres?
What are Natural and Synthetic Fibres? Video Lecture | Advance Learner Course: Science Class 7
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FAQs on What are Natural and Synthetic Fibres? Video Lecture - Advance Learner Course: Science Class 7
| 1. What are natural fibers? |  |
Natural fibers are fibers that are obtained from plants, animals, or minerals. Examples of natural fibers include cotton, silk, wool, jute, and linen. These fibers are biodegradable and renewable.
| 2. What are synthetic fibers? | |
Synthetic fibers are man-made fibers that are created through chemical processes. They are not obtained from natural sources but are produced from raw materials such as petroleum-based chemicals. Examples of synthetic fibers include polyester, nylon, acrylic, and rayon.
| 3. What are the differences between natural and synthetic fibers? | |
The main differences between natural and synthetic fibers are:
- Source: Natural fibers come from plants, animals, or minerals, while synthetic fibers are man-made.
- Production process: Natural fibers are obtained through harvesting and processing, while synthetic fibers are produced through chemical processes.
- Strength and durability: Synthetic fibers are generally stronger and more durable than natural fibers.
- Cost: Synthetic fibers are often cheaper to produce and purchase compared to natural fibers.
- Environmental impact: Natural fibers are biodegradable and have a lower environmental impact, while synthetic fibers are non-biodegradable and can contribute to pollution.
| 4. Which type of fiber is more commonly used in clothing? | |
Both natural and synthetic fibers are widely used in clothing, but the usage depends on various factors. Natural fibers like cotton and wool are commonly used for clothing due to their comfort, breathability, and natural feel. However, synthetic fibers like polyester and nylon are also extensively used due to their durability, wrinkle resistance, and moisture-wicking properties.
| 5. Are natural fibers more sustainable than synthetic fibers? | |
In terms of sustainability, natural fibers have certain advantages over synthetic fibers. Natural fibers are biodegradable, renewable, and require less energy during production. They also have a lower carbon footprint and can be sourced from sustainable farming practices. On the other hand, synthetic fibers are derived from non-renewable resources and their production involves energy-intensive processes. However, it is important to note that both natural and synthetic fibers have their own environmental impacts, and sustainable practices can be implemented in the production and disposal of both types of fibers.
Text Transcript from Video
the clothes we wear are made up of
fabrics fibers are of two types
natural fibers which are obtained from
natural resources like plants and
animals for example cotton linen jute
coir etc are obtained from plants wool
and silk are common fibers obtained from
animals synthetic fibers which are
man-made fibers for example rayon nylon
polyester and acrylic synthetic fibers
are made by the use of chemicals a
synthetic fiber is a chain of small
units joined together these units are
called monomers mono means single merle
means unit certain fibers are made of
many units join together to form a large
unit these are called polymers poly
means many mer means unit for example
cotton is made up of glucose and
cellulose monomers may combine into two
different ways to form a polymer linear
polymer like beads on a string and
cross-linked polymers like beads on a
net
fabrics fibers are of two types
natural fibers which are obtained from
natural resources like plants and
animals for example cotton linen jute
coir etc are obtained from plants wool
and silk are common fibers obtained from
animals synthetic fibers which are
man-made fibers for example rayon nylon
polyester and acrylic synthetic fibers
are made by the use of chemicals a
synthetic fiber is a chain of small
units joined together these units are
called monomers mono means single merle
means unit certain fibers are made of
many units join together to form a large
unit these are called polymers poly
means many mer means unit for example
cotton is made up of glucose and
cellulose monomers may combine into two
different ways to form a polymer linear
polymer like beads on a string and
cross-linked polymers like beads on a
net
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Nov 21, 2024 Last updated |
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