Worksheets5.3Understanding Friction
Total questions: 23
Worksheet time: 21mins
What is friction?
A force that pulls things to the center of the Earth
A force between two surfaces that slows down moving objects
A magnetic force that attracts iron
A type of gravity
Where does friction happen?
Only in the air
Inside a magnet
Between two surfaces rubbing together
Inside a battery
What does friction do to a moving object?
It makes it go faster
It slows it down
It makes it float
It turns it into a liquid
True or False: Friction makes it for objects to move.
True
False
Which word best describes a surface that has of friction?
Smooth
Smooth
Slippery
Slippery
Wet
Wet
Rough
Rough
If a surface is 'slippery,' what does that mean about the friction?
It has high friction
It has no friction at all
It is a surface without much friction
It is magnetic
Look at the surfaces below. Which one would create the friction?
A mirror
A mirror
A rough carpet
A rough carpet
ice
ice
A wet tile floor
A wet tile floor
Why do slides in a playground need to be smooth?
To create low friction so you slide down fast
To create high friction so you get stuck
To increase gravity
To make them magnetic
In a diagram, which way does the arrow for friction point?
In the same direction the object is moving
In the opposite direction to the movement
Straight up to the sky
Down towards the center of the Earth
Friction helps our shoes 'grip' the ground. What does 'grip' mean?
Sliding away quickly
Being able to keep things in place
Melting into the floor
Floating in the air
Which piece of equipment would you use to measure the size of the friction force?
A ruler
A clock
A forcemeter
A thermometer
What unit do we use to record the friction force?
Centimeters (cm)
Seconds (s)
Liters (l)
Newtons (N)
William measures friction on three surfaces.
Here are his results: • Wood: 10 N • Carpet: 20 N • Sand: 18 N
Which surface has the most friction?
Wood
Carpet
Sand
They are all the same
Using the same results (Wood 10N, Carpet 20N, Sand 18N), which surface was the ?
Wood
Carpet
Sand
Impossible to tell
Why did the Carpet measure 20N while the Wood only measured 10N?
The carpet is slippery
The carpet is rough or bumpy
The wood is magnetic
The forcemeter was broken
Friction can speed up moving objects. True or False?
True
False
Friction occurs when two surfaces rub against one another. True or False
True
False
What does friction cause?
It makes things speed up.
It makes things slow down or stop.
It make things fall to the ground.
Without friction a toy car would ----
keep going and going.
stop right away.
stay at rest all the time.
What do you put on a water slide to make it have more friction when you slide on it? (choose more than one)
oil
oil
water
rocks
nails
nails
When I ride my bicycle and I pull the brakes to slow down, what helps me slow down?
Friction
Air
A hill
The road
Suzie loves to ice skate fast. There is very little friction between her ice skates and the ice. Is this good or bad?
good
bad
