NSO Level 1- Science Olympiad (SOF) Class 8: Questions 822 - 826 of 1076

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Question number: 822

» Friction

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MCQ▾

Question

The effect of friction on a moving object would be

Choices

Choice (4)Response

a.

It retards the motion

b.

It supports the motion

c.

It stops the motion

d.

It accelerates the motion

Question number: 823

» Force and Pressure

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MCQ▾

Question

When the shutters of a dam is opened, water comes out with greater force from lower shutters than the upper ones. The reason would be

Choices

Choice (4)Response

a.

The pressure at which the water comes out is inversely proportional to its depth

b.

The pressure at which the water comes out is directly proportional to its depth

c.

Atmospheric pressure experiences more at deeper points

d.

Question does not provide sufficient data or is vague

Question number: 824

» Friction

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MCQ▾

Question

The force created due to relative movement between two surfaces is called

Choices

Choice (4)Response

a.

Static electricity

b.

Magnetic force

c.

Friction

d.

Gravity

Question number: 825

» Force and Pressure

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MCQ▾

Question

The pressure can be reduced by

Choices

Choice (4)Response

a.

Increasing the surface area on which the force acts

b.

Increasing the force

c.

Without changing the area

d.

Decreasing the surface area on which the force acts

Question number: 826

» Friction

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MCQ▾

Question

Find out the situations where friction is helpful to us in our day today life

Choices

Choice (4)Response

a.

While walking

b.

While running

c.

While applying breaks in vehicles

d.

All a. , b. and c. are correct

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