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Grade 8 Technology Assessment

Total questions: 49

Worksheet time: 1hrs 7mins

Name
Class
Date
1.

Which structural member in a roof truss is under compression?

a)

Tie beam

b)

King post

c)

Rafter

d)

Strut

2.

What type of force acts on a tie beam in a roof truss?

a)

Tension

b)

Compression

c)

Shear

d)

Torsion

3.

What is the primary purpose of cross-bracing in pylons?

a)

Aesthetic appeal

b)

Cost reduction

c)

Stability and stiffness

d)

Flexibility

4.

Which type of bridge uses suspension cables to support the deck?

a)

Beam bridge

b)

Cantilever bridge

c)

Cable-stayed bridge

d)

Suspension bridge

5.

Which type of gear introduces counter-rotation between two spur gears?

a)

Bevel gear

b)

Idler gear

c)

Worm gear

d)

Rack and pinion

6.

What does a cam mechanism convert?

a)

Linear motion into rotary motion

b)

Rotary motion into reciprocating motion

c)

Rotary motion into linear motion

d)

Reciprocating motion into rotary motion

7.

The purpose of using biodegradable plastic bags is to:

a)

Increase production cost

b)

Improve product quality

c)

Reduce environmental impact

d)

Improve packaging aesthetics

8.

The convention used to illustrate the hidden details in the drawing is a ...

a)

Centre line

b)

Dimension line

c)

Dash line

d)

Thin line

9.

Which structural failure occurs due to a lack of stability?

a)

Fracture

b)

Bending

c)

Toppling over

d)

Shear failure

10.

What is the function of an arch in construction?

a)

To provide flexibility

b)

To support loads efficiently by distributing weight

c)

To increase the height of a structure

d)

To improve aesthetics only

11.

Triangulation provides stiffness and strength in electrical pylons.

a)

True

b)

False

12.

A cantilever is supported at both ends.

a)

True

b)

False

13.

A crank is an adaptation of a first-class lever.

a)

True

b)

False

14.

Different-sized gears can make things go faster or slower.

a)

True

b)

False

15.

Cams change round and round motion into back and forth motion.

a)

True

b)

False

16.

Tension

a)

Force that causes bending or twisting

b)

Force that stretches a member

c)

Force that squeezes or shortens a member

d)

Force that acts across a material, causing layers to slide past each

17.

Compression

a)

Force that causes bending or twisting

b)

Force that stretches a member

c)

Force that squeezes or shortens a member

d)

Force that acts across a material, causing layers to slide past each

18.

Shear

a)

Force that causes bending or twisting

b)

Force that stretches a member

c)

Force that squeezes or shortens a member

d)

Force that acts across a material, causing layers to slide past each

19.

Torsion

a)

Force that causes bending or twisting

b)

Force that stretches a member

c)

Force that squeezes or shortens a member

d)

Force that acts across a material, causing layers to slide past each

20.

Triangulation

a)

Force that causes bending or twisting

b)

Force that stretches a member

c)

Force that squeezes or shortens a member

d)

Force that acts across a material, causing layers to slide past each

21.

List two structural members found in a queen post truss and their functions.

4 lines
22.

Give two reasons why steel I-beams are used in construction.

4 lines
23.

How does introducing an idler gear affect the rotation direction between two spur gears?

4 lines
24.

Describe one environmental benefit of recycling paper and cardboard.

4 lines
25.

Describe what would happen to people and animals who breathe in smoke and gases that come from burning plastic and the effect that it would have on the environment.

4 lines
26.

Name and describe the three most likely ways structures fail.

4 lines
27.

Study the king post truss below and label the parts in the spaces provided:

4 lines
28.

Look at the images below and name the different techniques presented in the images:

4 lines
29.

Look at the following 3D-drawing and draw the front, side and top view in 2D.

4 lines
30.

What type of force acts on a tie beam in a roof truss?

a)

Tension

b)

Compression

c)

Shear

d)

Torsion

31.

What is the primary purpose of cross-bracing in pylons?

a)

Stability and stiffness

b)

Aesthetic appeal

c)

Cost reduction

d)

Ease of construction

32.

Which type of bridge uses suspension cables to support the deck?

a)

Arch bridge

b)

Beam bridge

c)

Truss bridge

d)

Suspension bridge

33.

Which type of gear introduces counter-rotation between two spur gears?

a)

Spur gear

b)

Idler gear

c)

Bevel gear

d)

Worm gear

34.

What does a cam mechanism convert?

4 lines
35.

The purpose of using biodegradable plastic bags is to:

a)

Reduce environmental impact

b)

Increase durability

c)

Lower production costs

d)

Enhance aesthetics

36.

The convention used to illustrate the hidden details in the drawing is a ...

a)

Solid line

b)

Dashed line

c)

Dotted line

d)

Thick line

37.

Which structural failure occurs due to a lack of stability?

a)

Bending

b)

Compression

c)

Tension

d)

Shear

38.

What is the function of an arch in construction?

4 lines
39.

Triangulation provides stiffness and strength in electrical pylons.

a)

True

b)

False

40.

A cantilever is supported at both ends.

a)

True

b)

False

41.

A crank is an adaptation of a first-class lever.

a)

True

b)

False

42.

Different-sized gears can make things go faster or slower.

a)

True

b)

False

43.

Cams change round and round motion into back and forth motion.

a)

True

b)

False

44.

List two structural members found in a queen post truss and their functions.

4 lines
45.

Give two reasons why steel I-beams are used in construction.

4 lines
46.

How does introducing an idler gear affect the rotation direction between two spur gears?

4 lines
47.

Describe one environmental benefit of recycling paper and cardboard.

4 lines
48.

Describe what would happen to people and animals who breathe in smoke and gases that come from burning plastic and the effect that it would have on the environment.

4 lines
49.

Name and describe the three most likely ways structures fail.

4 lines

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