In this page we have Friction Important questions . Hope you like them and do not forget to like , social share
and comment at the end of the page.
Question 1. FILL IN THE BLANKS:
__________ acts opposite to the direction of motion.
Friction results when two or more surfaces are in _____________.
__________ tries to keep the objects at rest.
Sliding friction is _________ than static friction.
Rolling friction is _________ than static friction.
Answer
Friction
Contact
Static friction
Smaller
Greater
Question 2. STATE WHETHER THE STATEMENT IS TRUE OR FALSE:
Factors that affect friction are water and air.
A swimmer wears an astronaut suit while swimming.
Friction helps us to write.
Spikes are used to build the bottom of shoes to maintain the friction.
A smooth surface has more irregularities than a rough surface.
Answer
False
False
True
True
False
Question 3. UNSCRAMBLE THE WORDS:
RICFOINT
URFACES
YNADICM
AGRD
LUBIRANCT
Answer
FRICTION
SURFACE
DYNAMIC
DRAG
LUBRICANT
Question 4. Match the column
Answer
a ->III.
b ->I.
c ->II.
d ->V.
e- >IV.
Question 5. Name the following words:
It is a force that opposes the direction of motion when two surfaces are in contact.
The maximum friction that is required to move an object to other object’s surface.
A substance that forms a thin layer between the two surfaces in contact.
Pointed nails in the bottom of shoes that help to maintain the friction while walking and running.
Frictional force that resists the rolling body to move in other surface.
Frictional force that resists the body to sliding in other surface.
This solution is used to reduce friction which is slippery in nature.
The deep grooves present in tyres of vehicles like bus, truck and motorbikes etc. increases friction between tyres and road.
This material provides more friction than nails.
Answer
Friction
Limiting friction
Lubricant
Spikes
Rolling friction
Sliding friction
Soap solution
Treads
Screws
Question 6. Very short answer type questions:
(i)Write any two types of friction.
(ii)Give one example of rolling friction.
(iii)Give one example of sliding friction.
(iv)Why cricketers use rubber grip?
(v)Why weightlifters apply powder while lifting the weight?
Answer
(i)Static and limiting friction.
(ii)Throwing a ball in the bowling game.
(iii)Shifting sofa from one place to another.
(iv)Cricketers use rubber grip to get a firm grip while batting.
(v)Weightlifters apply powder while lifting the weight because it increases friction that provides firm grip.
Summary
This Friction Important Questions for Class 8 is prepared keeping in mind the latest syllabus of CBSE . This has been designed in a way to improve the academic performance of the students. If you find mistakes , please do provide the feedback on the mail.
