Lakhmir singh solutions science class 8 Solutions for Chapter 12 friction

Exercises in Chapter 12 friction Grade 8

Exercise

Questions in Exercise

Name the force which always opposes the motion

Why does a fast car slow down if its engine is switched off?

Which type of surfaces produce

a) least friction

b) too much friction

Name a device which is used to measure force acting on an object.

Out of sliding friction, static friction, and rolling friction:

a) which one is the smallest

b) which one is the largest

Which type of friction comes into play when a book kept on cylindrical pencils is moved by pushing?

Why is it more difficult to walk properly on a well-polished floor?

Why is it difficult to walk on a wet marble floor?

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Chapters in this book

Crop Production And Management

Microorganisms: Friends and Foe

Synthetic Fibres And Plastics

Materials: Metals and Non-Metals

Coal And Petroleum

Combustion And Flame

Conservation Of Plants And Animals

Cell Structure And Its Functions

Reproduction In Animals

Reaching The Age Of Adolescence

Force and Pressure

Friction

Sound

Chemical Effect Of Electric Current

Some Natural Phenomena

Light

Stars And The Solar System

Pollution Of Air And Water

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