Learn Class 8 Science - Synthetic Fibres and Plastics

We all wear different styles of cloth in our daily life. And all those clothes materials will include different fabrics. Either it is a synthetic fibre, natural fiber, or polymer. So always it becomes a concern how they differ from each other?

Fibre:

What is fibre? Isn't it the material which is used in clothes? Or what is it?

  • Fibre is the only material that helps in the development of fabric.
  • And this fabric also designs the home things.

Polymer:

The word 'Polymer' consists of two words, I.e., Poly(many) +mer(unit).

  • It includes many units.
  • And it is also known as a larger unit. Further, which helps in making the 'fibre & fabric.'

1. Synthetic Fibre:

Synthetic fibres are human-made fibres. And are:

  • Durable
  • Easily affordable
  • For e.g., Nylon & Rayon

2. Natural Fibre:

Have you heard about fibre coming from animals & plants? Yes, these are among those only!

  • e.g.Cotton, silk, and wool.

3. Plastics:

What is plastic? You can define plastic-like. It is only a material that is similar to synthetic fibre.

Thermoplastics:

  • Most flexible plastics!
  • Ease to bend (it resolve with heating)

Thermosetting plastics:

  • Hard plastics!
  • Bend only once, i.e., with a one-time heating process only.

Learning Videos for 8th Grade Science - Synthetic Fibres and Plastics

Synthetic Fibres and Plastics Sample Questions for Class 8

Question 1

Plastics, paints, and DNA are examples of .
A. metals
B. crystals
C. polymers
D. metallic bonds

Question 2

Clouds that look like fluffy, round piles of cotton are called .
A. cirrus
B. lenticular
C. cumulus
D. stratus

Question 3

Matter is made up of particles called and .
A. atoms, molecules
B. solids, gases
C. sublimation, condensation
D. elements, periods

Question 4

What does VLA stand for?
A. Very Large Array
B. Very Large Alay
C. Very Large Antenna
D. Very Large Telescope

Question 5

Which type(s) of numbers does scientific notation best describe?
A. very small only
B. very large only
C. very small and very large
D. large and small combined