Educator and Tagging Information
Learning Area:
Technology
Resource Name:
Technology
Assessment Exemplar Number:
TECHN8.133
Item/s:
1
Phase:
Senior Phase
Grade:
8
Tags:
Technology, mechanical systems, gears, identify, hand drill, wiper, drill press, bicycle, clock, guitar
head, handled corkscrew, windmill pump, bevel, worm, rack and pinion, spur, advantages,
disadvantages, worksheet, Formative Assessment
Assessment Type:
Formative
Assessment Form/s:
Worksheet
Copyright for included material:
N/A
Duration:
60 min
Learning Outcome(s) and Assessment Standard(s):
Learning Outcome 2: Technological Knowledge and Understanding
The learner will be able to understand and apply relevant technological knowledge ethically and
responsibly.
Assessment Standards
We know this when the learner
3 Systems and Control
3.1 Demonstrates knowledge and understanding of how mechanical systems (e.g. pneumatic or
hydraulic systems, gears, belt drive systems, pulley systems, linked lever systems) convert motion
and force to give mechanical advantage, and represents them using systems diagrams.
Learning Space:
Assessment
Hyperlinks:
To be completed later.
Rating:
Number of questions for exemplar:
1
Easy questions:
Medium questions:
Question 1
Difficult questions:
Assessment Task
Gear identification
1.1 Identify the types of gears in the following mechanisms.
1.1.1 Hand drill
1.1.2 Wiper
1.1.3 Drill press
1.1.4
Bicycle gears
1.1.5 Clock
1.1.6
Guitar head
1.1.7 Two-handled corkscrew
1.1.8
Windmill pump
[16 marks]
1.2.1 Name an advantage of using gears.
1.2.2 Name a disadvantage of using gears.
[4 marks]
[20 marks]
Suggested Solutions
Question Possible Answers
number
marks
1
8x2
1.1.1 bevel gears
marks
1.1.2 worm and worm wheel
1.1.3 rack and pinion system
1.1.4 spur gears
1.1.5 spur gears
1.1.6 worm and worm wheel
1.1.7 spur gears
1.1.8 spur gears
2x2
1.2.1 Gears can transmit large drive forces.
marks
1.2.2 Can be noisy.
[20 marks]
Appendix of Assessment Tools