Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 48 · 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.🔢 To follow the engineering design process, which comes first: “Test” or “Imagine”? (a) Imagine (b) Test
2. 2.🔺 A flat frame has 9 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
3. 3.What does the builder do? (a) keeps the team on track (b) shares out the jobs (c) cuts and joins parts (d) runs the tests
4. 4.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 3 N, a glass sheet 5 N, a wooden plank 6 N, sandpaper 7 N. How many newtons more were needed on sandpaper than on ice?
5. 5.🧑‍🔧 Which kind of engineer builds rockets? (a) chemical (b) aerospace (c) mechanical (d) biomedical
6. 6.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a constraint (b) a criterion
7. 7.Which of these is recycle (make new things)? (a) refill a water bottle (b) reuse gift paper (c) buy less packaging (d) pulp old paper
8. 8.🔍 Which is the odd one out? (a) using a heavy roof (b) adding cross bracing (c) building tall and narrow (d) stacking loose bricks
9. 9.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) computer (b) civil (c) biomedical (d) chemical
10. 10.True or false: a brick at a wall base is in compression (pushed). (a) False (b) True
11. 11.🏋️ A 5 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
12. 12.Which of these is a beam bridge? (a) cables tied down at ends (b) good for short gaps (c) tall towers hold cables (d) stones squeezed together
13. 13.🪢 A concrete slab weighing 10400 N rests evenly on 4 identical pillars. What compression force does each pillar carry, in newtons?
14. 14.⚖️ A lever bar balances. The load is 540 N at 20 cm from the fulcrum. The effort is ? N at 90 cm from the fulcrum on the other side. What is the missing force in newtons?
15. 15.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 30 cm and the load at 90 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
16. 16.Which job does a mechanical engineer do? (a) writes app software (b) designs car engines (c) plans a power grid (d) designs a paint factory
17. 17.💪 A bag has a mass of 20 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
18. 18.💪 Two children push a box to the right, one with 85 N and the other with 30 N. What is the net (total) force on the box, in newtons?
19. 19.🛞 More or less friction: a wheel on ball bearings? (a) more friction (b) less friction
20. 20.🔍 Which is the odd one out? (a) the tip of a nail (b) a door stopper (c) a chisel (d) a truck loading ramp
21. 21.📋 Criterion: the model bridge must hold at least 700 g. In the test it held 700 g. Does it meet the criterion? (a) No (b) Yes
22. 22.🔺 Which strong shape does an electric pylon use? (a) arch (b) dome (c) beam (d) triangle
23. 23.📋 For a model bridge challenge, is “fit on a school desk” a constraint or a criterion? (a) a constraint (b) a criterion
24. 24.True or false: to hide a failed test is good testing. (a) False (b) True
25. 25.📐 How many millimetres are in 1 centimetre? (a) 5 (b) 1000 (c) 100 (d) 10
26. 26.⚖️ Going along a lever from one end to the other, the order is: fulcrum, effort, load. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
27. 27.True or false: a fishing rod is a class 3 lever (effort in the middle). (a) True (b) False
28. 28.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
29. 29.🦺 Who should use hot glue guns and power tools in a kids’ project? (a) any child alone (b) the youngest child (c) a stranger (d) an adult
30. 30.True or false: an axe blade is a wedge. (a) True (b) False
31. 31.Which of these happens in the Create step? (a) make it better, retest (b) redesign after testing (c) make a prototype (d) check it against goals
32. 32.🛞 Is friction helpful or a problem here: dragging a heavy box? (a) helpful (b) a problem
33. 33.🤝 A team of 4 shares 8 equal jobs fairly. Each job takes 2 minutes. How many minutes does each person work?
34. 34.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 400 g. Does it meet the criterion? (a) No (b) Yes
35. 35.⚖️ Along a straight bar, measured from the left end, the effort is at 110 cm, the fulcrum at 30 cm and the load at 70 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
36. 36.🦺 In the workshop, is it safe to wear safety goggles? (a) safe (b) not safe
37. 37.🤝 In a design team, who writes down results? (a) builder (b) tester (c) team leader (d) recorder
38. 38.🏋️ A 17 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.What does the builder do? (a) puts the model together (b) keeps the design notes (c) keeps the team on track (d) shares out the jobs
40. 40.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor

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