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Structures: Internal and External Forces

Total questions: 18

Worksheet time: 12mins

Name
Class
Date
1.
The strongest structural shape is _________.
a)
rectangular
b)
arched
c)
square
d)
triangular
2.

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

d)

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

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.

What type of force is shear?

a)

Twisting

b)

Pulling

c)

Ripping

d)

Pushing

6.

Gravity is a force that is caused by the Earth pulling objects towards its centre?

a)

True

b)

False

7.

Tension is a twisting force?

a)

True

b)

False

8.

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

a)

True

b)

False

9.

External forces such as extreme weather pose a constant threat to the structural reliability of structures.

a)

True

b)

False

10.

How does a structure maintain structural reliability?

a)

When the internal forces of a structure are greater than the external force

b)

When the external forces of a structure are greater than the internal force

c)

When the structure is there for you when you need it most.

11.

Internal forces resist the external forces acting on a structure.

a)

True

b)

False

12.

The following are all examples of internal forces except...

a)

Compression

b)

Tornado

c)

Tension

d)

Shear

13.
The caps of most mushrooms are hollow.  What kind of structure would they be classified as?
a)
Shell structure
b)
Solid structure
c)
Frame structure
d)
Whole structure
14.

An example of a natural solid structure would be...

a)

A chain-link fence

b)

Framing of a house

c)

A tree trunk

d)

Spiderwebs

15.

Structures can Be Natural or Manufactured

a)

True

b)

False

16.

An example of a solid man-made structure would be...

a)

Brick wall

b)

Window frame

c)

A mountain

d)

Coral reefs

17.

A ___________________ is a push or pull that tends to cause an object to change its movement or shape

a)

Newton

b)

Force

c)

Torsion

d)

Compression

18.

An example of an external force would be...

a)

Torsion

b)

Tension

c)

Wind

d)

Bending