WorksheetsFrictional Force
Total questions: 25
Worksheet time: 12mins
The picture shows a boy pulling
a box. How can he move the box
more easily?
Using wooden rollers.
Put a cloth under the box and pull it using the cloth.
Create a pattern on the surface of the box.
Ensure the surface of the box is clean.
Ways to reduce frictional force
use lubricants
use grease
use magnesium carbonate chalk powder
use rollers and ball bearings
If the type of surface is smoother, the distance traveled by the toy car will be (a)
The frictional force (a) caused the boy to fall.
The use of lubricants in motor vehicles ______________
the excessive frictional force in the engine
compartment.
reduces
increases
reuses
enlarge
If the surface is smooth, the speed traveled by the toy car will be __________.
faster
slower
The use of lubricants and oil in motor vehicles __________ friction in the engine compartment.
reuses
increases
reduces
enlarge
If the surface is rough, the speed traveled by the toy car will be __________.
faster
slower
There are deep treads on the tyre because they ___________.
increase the stopping distance of the car
reduce the amount of material used
increase friction
Friction produces _____________ to keep ourselves warm or to start a fire.
heat
heart
helium
hexagon
Anytime two surfaces of objects rub each other, they cause _ _ _ _ _ _ _ _.
(a)
Friction always slows down a moving object.
True
False
Friction can stop object from moving.
True
False
Sports such as football involve kicking, running, stopping and jumping.
How does friction help the players?
(You may pick more than one answers)
not to slip
not to walk
not to jump
not to fall over
How does friction help people in the cold?
keep healthy by eating fruits
keep fit by rubbing hands together
keep warm by rubbing hands together
Smooth surfaces have ...
more friction
less friction
the same level of friction
Rough surfaces have ...
more friction
less friction
the same level of friction
Ways to increase frictional force
(You may tick more than one answer)
use treaded tyres for cars
use smooth shoe soles without grooves
wiping wet balls when playing netball
use studded shoes when play football
Ways to reduce frictional force
(You may tick more than one answer)
use lubricants and oils
polishing surface
add grooves or studs on shoe soles
use rollers
