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Forces Acting on Structures

Total questions: 30

Worksheet time: 17mins

Name
Class
Date
1.

What is a static load?

a)

A load that causes static electricity

b)

A moving load

c)

A non-moving load

2.

What is a dynamic load?

a)

A moving load

b)

A non-moving load

c)

A load that is always changing

3.

Compression is a force that ________

a)

squeezes material together

b)

twists materials

c)

pulls materials

d)

rips materials

4.

What type of force is torsion?

a)

Twisting

b)

Pushing

c)

Ripping

d)

Pulling

5.

The size, direction and the location of where the force is applied are all factors that can effect a structure.

a)

True

b)

False

6.

The force that pulls objects toward earth

a)

shear

b)

specification

c)

gravity

7.

Bend or tear a material by pressing different parts in opposite directions at the same time

a)

shear

b)

torsion

c)

tension

8.

What is a force?

a)

A push or a pull that causes an object to change its movement or shape.

b)

A push or twist that causes an object to change its movement or

c)

Something from Star Wars

9.

Internal forces are forces that act on structures from the ...

a)

outside

b)

inside

10.

What are examples of live loads that are external forces?

a)

a person sitting on a chair

b)

snow on a roof

c)

wind on a building

d)

people in a building

e)

legs of a table

11.
When objects remain in the same place, it is called...
a)
gravity
b)
friction
c)
balanced force
d)
unbalanced force
12.
An unbalanced force is when objects move in one direction because the force is greater from that direction.
a)
true
b)
false
13.
Friction helps objects to move easier.
a)
true
b)
false
14.

Friction is a force that acts in a(n) ___________ direction of movement.

a)

similar

b)

opposite

c)

west

15.
What is an example of a wheel and axle?
a)
ax
b)
light bulb
c)
skateboard ramp
d)
bus tire
16.

What is an example of a wedge?

a)

an axe

b)

Your hair

c)

curtain

d)

wood screw

17.
What is an example of a screw?
a)
arm
b)
ax
c)
light bulb
d)
ramp
18.

What is a screw?

a)

means attracted to a magnet

b)

screw is really a twisted inclined plane

c)

stiff bar that rests on a fulcrum

d)

made of 2 inclined planes that are back to back

19.
What is a pulley?
a)
wheel that turns on a post
b)
uses a wheel and rope to lift a load
c)
made of two or more simple machines
d)
flat surface that is higher at one end
20.
What are the cheapest and easiest bridges to build?
a)
beam
b)
drawbridge
c)
suspension
d)
truss
21.
Which style of bridge consists of an assembly of triangles?
a)
beam
b)
arch
c)
truss
d)
none of the above
22.
What type of bridge is this
a)
Arch
b)
Suspension 
c)
Beam 
23.

What type of bridge is this?

a)

Arch

b)

Suspension

c)

Beam

24.
Which is the strongest shape used in engineering?
a)
Triangle
b)
Square
c)
Circle
d)
Rectangle
25.
What are the two ends of a bridge (the bank) that support its weight?
a)
span
b)
abutment
c)
cable
d)
pier
26.
What is tension?
a)
a twisting or turning force
b)
a force that makes a straight material become curved
c)
a pulling force that stretches a material
d)
a pushing force that squeezes a material 
27.
What is bending?
a)
a twisting or turning force
b)
a force that makes a straight material become curved
c)
a pulling force that stretches a material
d)
a pushing force that squeezes a material 
28.

The end-joining the tongs together is the ________.

a)

effort force

b)

fulcrum

c)

load

29.

This image shows what:

a)

awheel

b)

gear

c)

single pulley

d)

compound pulley

30.

What are the forces labelled in the picture?

a)

A. Input Force B. Output Force

b)

A. Output Force B. Input Force

c)

A. Static Force B. Dynamic Force