Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 925 · 40 questions

Engineer's tip (Find the topic, use the idea): Find the topic: design process, force, machine, lever, structure, material, bridge or scale. Use that lesson’s rule — what is in the middle, load × distance = effort × distance, work = force × distance, real = drawing × scale. Write the calculation before you answer.

1. 1.🪝 A well winch has a handle (wheel) of radius 40 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
2. 2.🔄 What is the FIRST step of the engineering design process? (a) Test (b) Create (c) Ask (d) Improve
3. 3.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
4. 4.True or false: an aerospace engineer designs artificial limbs. (a) False (b) True
5. 5.What does the team leader do? (a) keeps the team on track (b) writes down results (c) cuts and joins parts (d) puts the model together
6. 6.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) civil (b) aerospace (c) chemical (d) computer
7. 7.⚖️ In a class 3 lever, what is in the middle? (a) the fulcrum (b) the effort (c) the pulley (d) the load
8. 8.True or false: to check a shelf is level, use a hand drill. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) record every result (d) repeat each test
10. 10.🪢 A stage stands on 6 identical legs and each leg is squeezed with 200 N. What is the total load on the stage, in newtons?
11. 11.🌉 Which bridge type: “a log across a stream”? (a) beam bridge (b) arch bridge (c) suspension bridge
12. 12.💪 Two children push a box to the right, one with 85 N and the other with 80 N. What is the net (total) force on the box, in newtons?
13. 13.🦺 In the workshop, is it safe to wear safety goggles? (a) safe (b) not safe
14. 14.⚖️ Which class of lever is a crowbar? (a) class 3 (b) class 2 (c) class 1
15. 15.True or false: a hair band needs a heat insulator. (a) True (b) False
16. 16.🪢 A sign weighing 80 N hangs from 4 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
17. 17.🧪 A paper bridge was tested three times. It held 290 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
18. 18.🔺 Which strong shape does an old stone bridge use? (a) dome (b) arch (c) triangle (d) beam
19. 19.🤝 Is it good or poor teamwork to give kind feedback? (a) good teamwork (b) poor teamwork
20. 20.🔍 Which is the odd one out? (a) a chisel (b) a knife edge (c) a truck loading ramp (d) a door stopper
21. 21.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
22. 22.Which need does a tunnel meet? (a) cross a wide river (b) make power from sunlight (c) go through a mountain (d) talk to someone far away
23. 23.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a constraint (b) a criterion
24. 24.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
25. 25.Which of these is an arch bridge? (a) cables tied down at ends (b) tall towers hold cables (c) deck hangs from cables (d) pushes out on its ends
26. 26.♻️ Which is the BEST order to think about waste? (a) reduce, reuse, recycle (b) recycle, reuse, reduce (c) reuse, recycle, reduce (d) burn, bury, forget
27. 27.🔢 To follow the engineering design process, what comes right after “Plan”? (a) Improve (b) Create (c) Test (d) Imagine
28. 28.🧱 Which property matters most for a boat hull? (a) waterproof (b) heat insulator (c) electrical conductor (d) transparent
29. 29.⚖️ A lever bar balances. The load is 100 N at 10 cm from the fulcrum. The effort is 50 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
30. 30.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a fridge (c) a shake table (d) a telescope
31. 31.🪢 Tension or compression: a stretched rubber band? (a) tension (b) compression
32. 32.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a criterion (b) a constraint
33. 33.🔢 To follow the engineering design process, which is the FIRST step? (a) Plan (b) Ask (c) Imagine (d) Test
34. 34.🪢 A stage stands on 6 identical legs and each leg is squeezed with 275 N. What is the total load on the stage, in newtons?
35. 35.🪝 A winch has a wheel of radius 9 cm and an axle of radius 3 cm. What effort on the wheel lifts a 60 N bucket on the axle, in newtons? (ideal)
36. 36.🤝 A team of 5 shares 10 equal jobs fairly. Each job takes 8 minutes. How many minutes does each person work?
37. 37.Which of these is found in nature? (a) a ceiling fan (b) a satellite (c) a dam (d) a banyan tree
38. 38.⚙️ Which simple machine is a steering wheel? (a) lever (b) wedge (c) wheel and axle (d) screw
39. 39.🛞 More or less friction: oil on a squeaky hinge? (a) more friction (b) less friction
40. 40.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False

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