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8th CBSE
IMPORTANT
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Does friction always oppose motion?

Important Questions on Friction

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8th CBSE
IMPORTANT
Living Science 8>Chapter 12 - Friction>ORAL QUESTIONS>Q 2
A surface is rubbed to make it smoother. What effect will this have on friction? Give reasons.
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8th CBSE
IMPORTANT
Living Science 8>Chapter 12 - Friction>ORAL QUESTIONS>Q 3
Two surfaces are rubbed together, first with a small force and then with a greater force. In which case will the friction between the surfaces be higher? Give reasons.
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8th CBSE
IMPORTANT
Living Science 8>Chapter 12 - Friction>ORAL QUESTIONS>Q 1
Since friction slows us down, we can run very fast if friction is eliminated. Do you agree? Give reasons. 
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8th CBSE
IMPORTANT
Living Science 8>Chapter 12 - Friction>ORAL QUESTIONS>Q 2
It was found that a machine with moving parts was getting overheated. What was the heat due to? How can the heat generated be reduced?
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8th CBSE
IMPORTANT
Living Science 8>Chapter 12 - Friction>ORAL QUESTIONS>Q 3
Does air exert friction on an object moving through it?
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8th CBSE
IMPORTANT
Living Science 8>Chapter 12 - Friction>EXERCISES>Q A
Friction is -
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8th CBSE
IMPORTANT
Living Science 8>Chapter 12 - Friction>EXERCISES>Q A
It is difficult to walk on ice because -
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 12 - Friction>EXERCISES>Q A
Friction can be increased by -