WorksheetsForces & Bridges
Total questions: 35
Worksheet time: 21mins
Name
Class
Date
1.
How can friction be reduced?
a)
reduce the force acting between the 2 surfaces
b)
reduce the roughness of the 2 surfaces coming in contact
c)
use wax, grease or oil
d)
all of the above are ways of reducing friction
2.
Wheels on a skateboard most likely experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
3.
Sally experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
4.
Objects balanced on Timmy's head experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
5.
Which type of friction occurs when an object rolls over or rotates on a surface?
a)
sliding
b)
static
c)
fluid
d)
rolling
6.
Oil between machine parts would be an example of which type of friction?
a)
static
b)
sliding
c)
fluid
d)
rolling
7.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
8.
Name the missing force...
a)
applied force
b)
weight force
c)
lift
d)
normal force
9.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
10.
Name the missing force...
a)
applied force
b)
weight force
c)
tension force
d)
drag
11.
What is the net force in this diagram?
a)
8N right
b)
2 N right
c)
8N left
d)
2N left
12.
The force that pulls things toward earth.
a)
Speed
b)
Gravity
c)
Air Resistance
d)
Mass
13.
What is the net (sum of the) force?
a)
4000 N right
b)
8000 N right
c)
8000 N left
d)
4000 N left
14.
Name the missing force....
a)
weight force
b)
normal force
c)
frictional force
d)
tension force
15.
How would the absence of friction affect a marble traveling on a long, straight path?
a)
The marble’s speed would decrease.
b)
The marble’s speed would increase.
c)
The marble would stop immediately.
d)
The marble would remain at constant speed.
16.
Name the missing force...
a)
applied force
b)
weight force
c)
tension force
d)
drag
17.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
18.
This is the force on a bridge because of its own weight.
a)
tension
b)
deck
c)
dead load
d)
live load
19.
This force pushes on ends of members or elements of a bridge.
a)
tension
b)
compression
20.
This force pull on ends of members or elements of a bridge.
a)
tension
b)
compression
21.
This is the stretching force that pulls on members or elements of a bridge.
a)
torsion
b)
tension
c)
compression
d)
malleability
22.
This is the force that twists a material.
a)
torsion
b)
tension
c)
compression
23.
Weight of this car is pushing the bridge INWARD...name this force affecting the bridge
a)
air resistance
b)
tension
c)
torsion
d)
compression
24.
What type of bridge is pictured?
a)
truss
b)
suspension
c)
beam
d)
cable-stay
25.
What type of bridge is pictured?
a)
truss
b)
suspension
c)
beam
d)
cable-stay
26.
This is a type of friction that occurs when air pushes against a moving object causing it to negatively accelerate.
a)
surface area
b)
air resistance
c)
descent velocity
d)
gravity
27.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
28.
This is a type of friction that occurs when air pushes against a moving object causing it to negatively accelerate.
a)
surface area
b)
air resistance
c)
descent velocity
d)
gravity
29.
Which situation(s) shown is balanced?
a)
top
b)
bottom
c)
both
d)
neither
30.
If these boys are pulling with the same amount of force. What will happen?
a)
The boy in blue will win.
b)
They will not experience a change in motion.
c)
The boy in red will win.
d)
Both will fall down.
31.
If the net force of an object is 0N it is experiencing a change in motion.
a)
TRUE
b)
FALSE
32.
What type of friction is not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
33.
This term can describe vehicular traffic or pedestrians crossing a bridge.
a)
live load
b)
dead load
c)
environmental load
d)
dynamic equilibrium
34.
What is force?
a)
A push exerted on an object
b)
A push or pull exerted on an object
c)
A pull exerted on an object
d)
Nothing
35.
Which type of bridge is this?
a)
suspension
b)
truss
c)
arch
d)
beam
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