Friction [NSO Level 1- Science Olympiad (SOF) Class 8]: Questions 1 - 5 of 65

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Question 1

Friction

Question

MCQ▾

In the first figure a boy is trying to move a cupboard and in the second he is moving it ahead. He had to push harder in the first case than the second. The reason is

Static and Sliding Friction

Choices

Choice (4)Response

a.

Static friction and sliding friction are equal in measure

b.

Static friction is greater than sliding friction

c.

Sliding friction is greater than static friction

d.

Question does not provide sufficient data or is vague

Question 2

Friction

Question

MCQ▾

A mechanic puts grease on the moving parts of your bicycle while servicing in order to

Choices

Choice (4)Response

a.

Enable smooth running of the bicycle

b.

Reduce friction between the moving parts

c.

Increase friction between the moving parts

d.

Both a. and b. are correct

Question 3

Friction

Question

MCQ▾

The frictional force applied by fluids is called

Choices

Choice (4)Response

a.

Sliding friction

b.

Contact friction

c.

Rolling friction

d.

Drag

Question 4

Friction

Question

MCQ▾

Friction is an example of a

Choices

Choice (4)Response

a.

Contact force

b.

Magnetic force

c.

Muscular force

d.

Noncontact force

Question 5

Friction

Question

MCQ▾

You may find it difficult to write on a plane glass surface. The reason is

Choices

Choice (4)Response

a.

Friction is too less in smooth surface

b.

The surface of glass is very smooth

c.

Both a. and b. are correct

d.

None of the above

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