EASY
8th CBSE
IMPORTANT
Earn 100

Smooth surfaces also show irregularities under the microscope. Why?

Important Questions on Friction

EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Friction>EXERCISE>Q 3
Why are metal chains wound around the tyres of vehicles to prevent slipping on ice?
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Friction>EXERCISE>Q 4
Why do football shoes have studs but running shoes have spikes?
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Friction>EXERCISE>DISCUSS
Friction is often called a necessary evil. Do you agree? Give reasons in favour or against.
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Friction>EXERCISE>FUN ACTIVITIES

Write the name of the frictional force acting in the following pictures.

Question Image

EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Friction>EXERCISE>VALUE FOR LIFE
Why do you think it is important to change the tyres of vehicles after some years?
EASY
8th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Friction>EXERCISE>VALUE FOR LIFE
Why do you think it is important to oil your doors and bicycles after sometime?