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Friction

Total questions: 25

Worksheet time: 20mins

Name
Class
Date
1.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
d)
less friction doesn't affect speed
2.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
3.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
4.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
5.
 What is the unit called that measures force?
a)
weight
b)
meter
c)
Newton
d)
kilogram
6.
The rougher the surface, the faster an object will travel over the surface.
a)
True
b)
False
7.

Rough surfaces have _________

a)

greater friction

b)

less friction

c)

the same level of friction

8.
When most objects with smooth surfaces rub, there is less friction.
a)
True
b)
False
9.
On which surface will a toy car travel the furthest?
a)
Carpet
b)
Polished Wood
c)
Ice
10.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
11.

Which of the following is not used to reduce friction

a)

wheels

b)

sandpaper

c)

bumpy rocks

d)

bacon grease

12.

what is a force?

a)

a push or a pull

b)

change in displacement

c)

change in direction

13.

what kind of force is shown in this picture?

a)

gravitation force

b)

electric force

c)

magnetic force

d)

friction force

14.

what kind of force is represented in the picture by

 f→\overrightarrow{f}  

a)

gravitation force

b)

electric force

c)

magnetic force

d)

friction force

15.

what is the force used to attract the scarp iron?

a)

magnetic force

b)

tension

c)

electric force

d)

friction

16.

what force is pulling the apple down?

a)

gravitational force

b)

tension

c)

normal reaction

17.

what is the force shown in the picture?

a)

magnetic force

b)

electric force

c)

applied force

18.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
19.
The SI Unit of force is
a)
Pascal
b)
Meter/second
c)
Newton
d)
kg
20.

Are forces applied when the objects involved are in direct contact.

a)

Contact forces

b)

Normal forces

c)

action-at-a-distance forces

21.
What type of force is holding this balloon to the wall?
a)
Applied
b)
Gravitational
c)
Magnetic
d)
Electrical
22.
What is a force?
a)
a push or pull
b)
speed or acceleration 
c)
potential or kinetic energy
d)
balanced or unbalanced force
23.

A force that resists motion between two surfaces that are pressed together.

a)

Spring Force

b)

Normal Force

c)

Friction Force

24.

Force of attraction (pulling) between two objects. (Every object experiences this on earth)

a)

gravitational

b)

normal

c)

applied

d)

friction

25.

which of these is an effect of force?(tick mark the correct answers)

a)

force can start a motion

b)

force can stop a motion

c)

force can change the direction of motion

d)

force can change the shape of an object

e)

force can change the speed a moving object