MEDIUM
8th CBSE
IMPORTANT
Earn 100

Why is it not wise to reduce friction in every situation? Explain one situation where reducing friction can be dangerous to us.

Important Questions on Friction

MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 12 - Friction>ASSESSMENT ZONE>Q F
What do you mean by a streamlined shape? How is it useful?
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 12 - Friction>ASSESSMENT ZONE>Q F
What is the cause of friction? How can we minimise it?
 
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 12 - Friction>ASSESSMENT ZONE>Q F
What is the difference between rolling and sliding friction?
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 12 - Friction>ASSESSMENT ZONE>Q G
Why do we use ball bearings to reduce friction?
HARD
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 12 - Friction>ASSESSMENT ZONE>Q G
With the help of an activity, explain the effect of friction on the nature of surface in contact.
 
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 12 - Friction>ASSESSMENT ZONE>Q G
How does applying talc on the carom board help?
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 12 - Friction>ASSESSMENT ZONE>Q G
What are lubricants? How do they work?
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 12 - Friction>ASSESSMENT ZONE>Q G
Three children are at work. One is pushing a chair, another is pushing the sofa and the third one is pushing an empty trolley. Who is experiencing the maximum friction?