Match items in Column A with those in Column B. Column A Column B (i) Friction Produces (a) Ceiling Fan (ii) Lubricants (b) Heat (iii) Soapy floor (c) Oil and grease (iv) Ball bearing (d) Rolling friction (v) Wheels (e) Less the friction

(i)--(b) Friction opposes the relative motion and releases heat in the form of loss of energy. (ii)--(c) Lubricants are used to reduce the friction between contact surfaces. Some of the examples of lubricants are oil and grease. (iii)--(e) Soapy floor decreases the irregularities on the surface by smoothening it and results in less friction. (iv)--(a) Ball bearing is used in ceiling fan to reduce the friction between parts in order to reduce wear and tear. (v)--(d) Wheels rolled down on the surface and the friction force between them is called rolling friction. Column A Column B (i) Friction Produces (b) Heat (ii) Lubricants (c) Oil and grease (iii) Soapy floor (e) Less the friction (iv) Ball bearing (a) Ceiling Fan (v) Wheels (d) Rolling friction

E M B I B E

All in One - SCIENCE CBSE Class 8>Chapter 12 - Friction>Chapter Practice

Arjun Sharma, Seema Mehra and, Shikha Sharma Solutions for Chapter: Friction, Exercise 5: Chapter Practice

Author:Arjun Sharma, Seema Mehra & Shikha Sharma

Arjun Sharma Science Solutions for Exercise - Arjun Sharma, Seema Mehra and, Shikha Sharma Solutions for Chapter: Friction, Exercise 5: Chapter Practice

Attempt the free practice questions on Chapter 12: Friction, Exercise 5: Chapter Practice with hints and solutions to strengthen your understanding. All in One - SCIENCE CBSE Class 8 solutions are prepared by Experienced Embibe Experts.

Questions from Arjun Sharma, Seema Mehra and, Shikha Sharma Solutions for Chapter: Friction, Exercise 5: Chapter Practice with Hints & Solutions

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 12 - Friction>Chapter Practice>Q 6

Gases are only called fluids.

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 12 - Friction>Chapter Practice>Q 7

Friction is a necessary evil.

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 12 - Friction>Chapter Practice>Q 8

Soapy floor is slippery because of less friction.

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 12 - Friction>Chapter Practice>Q 9

Friction increases with increase in smoothness of surface.

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 12 - Friction>Chapter Practice>Q 10

Fluid friction depends on the shape of an object placed in the fluid and nature of fluid.

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 12 - Friction>Chapter Practice>Q 11

It is easy to roll the body over one another than to slide it.

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 12 - Friction>Chapter Practice>Q 12

Friction is harmful always.

EASY

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 12 - Friction>Chapter Practice>Q 1

Match items in Column A with those in Column B.

Column A	Column B
(i) Friction Produces	(a) Ceiling Fan
(ii) Lubricants	(b) Heat
(iii) Soapy floor	(c) Oil and grease
(iv) Ball bearing	(d) Rolling friction
(v) Wheels	(e) Less the friction

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