Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 938 · 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.⚙️ Which simple machine is a playground slide? (a) inclined plane (b) lever (c) wedge (d) screw
2. 2.🔢 To follow the engineering design process, what comes right after “Plan”? (a) Test (b) Create (c) Ask (d) Improve
3. 3.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) skip writing results (d) hide a failed test
4. 4.True or false: a biomedical engineer designs car engines. (a) True (b) False
5. 5.True or false: pushing a trolley is a pull. (a) False (b) True
6. 6.⚙️ Most simple machines make work easier by letting us … (a) switch off gravity (b) use a smaller force (c) make new energy (d) stop all friction
7. 7.🔢 To follow the engineering design process, which comes first: “Plan” or “Test”? (a) Plan (b) Test
8. 8.⚖️ A lever bar balances. The load is ? N at 40 cm from the fulcrum. The effort is 280 N at 80 cm from the fulcrum on the other side. What is the missing force in newtons?
9. 9.Which of these is an inclined plane? (a) a wheelchair ramp (b) a knife edge (c) a claw hammer on a nail (d) a well winch handle
10. 10.Which of these needs a transparent material? (a) the core of a wire (b) a plug pin (c) a tea flask lining (d) a magnifier lens
11. 11.🪝 Fixed or movable pulley: which one stays in one place? (a) a movable pulley (b) a fixed pulley
12. 12.📐 How many millimetres are in 1 centimetre? (a) 1000 (b) 5 (c) 10 (d) 100
13. 13.Which of these happens in the Imagine step? (a) brainstorm many ideas (b) make it better, retest (c) list the materials (d) build the model
14. 14.💪 In a tug of war, one team pulls right with 10 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
15. 15.🏚️ Three solid model towers are made of the same material. Tower A is 90 cm tall on a 30 cm wide base, tower B is 50 cm tall on a 10 cm base and tower C is 20 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
16. 16.True or false: “deck hangs from cables” is a suspension bridge. (a) True (b) False
17. 17.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 5 N, a carpet 8 N, sandpaper 12 N, a glass sheet 1 N. Which surface gave the least friction? (a) a carpet (b) sandpaper (c) a glass sheet (d) a wooden plank
18. 18.🤝 In a design team, who runs the tests? (a) tester (b) materials manager (c) team leader (d) builder
19. 19.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
20. 20.Which of these needs a heat insulator? (a) a switch contact (b) a raincoat (c) a yoga mat (d) an oven glove
21. 21.Which of these is an inclined plane? (a) a steering wheel (b) a flagpole rope wheel (c) a playground slide (d) a knife edge
22. 22.Which of these happens in the Test step? (a) dream up possible fixes (b) measure its performance (c) think of wild ideas (d) make it better, retest
23. 23.⚖️ Which class of lever is a crowbar? (a) class 3 (b) class 1 (c) class 2
24. 24.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a criterion (b) a constraint
25. 25.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 10 cm and the load at 20 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
26. 26.True or false: “a curve under the deck” is a suspension bridge. (a) False (b) True
27. 27.🔄 Is the engineering design process done only once? (a) yes, only once (b) no, it repeats (c) only for big jobs (d) only on Sundays
28. 28.🪝 More rope sections holding a load means … (a) the load floats (b) no change (c) more effort needed (d) less effort needed
29. 29.⚖️ A lever bar balances. The load is 700 N at 10 cm from the fulcrum. The effort is ? N at 70 cm from the fulcrum on the other side. What is the missing force in newtons?
30. 30.Which of these is reduce (use less)? (a) buy less packaging (b) pulp old paper (c) melt glass into new jars (d) use a jar as a pen stand
31. 31.True or false: “hold up 500 g” is a constraint (a limit). (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a well winch handle (b) a water tap handle (c) a road up a hill (d) a steering wheel
33. 33.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 70 cm and the load at 30 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
34. 34.🛞 More or less friction: sand on a slippery path? (a) less friction (b) more friction
35. 35.⚖️ A lever bar balances. The load is ? N at 40 cm from the fulcrum. The effort is 280 N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
36. 36.🔍 Which is the odd one out? (a) a seesaw (b) a knife edge (c) a nutcracker (d) a bottle opener
37. 37.🌉 A beam bridge 450 m long rests on the two river banks and on piers in between, making equal spans of 45 m. How many piers are there?
38. 38.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
39. 39.🪢 Tension or compression: a stone in an arch? (a) tension (b) compression
40. 40.True or false: a plank over a drain uses triangles. (a) False (b) True

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