Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 457 · 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 strong shape does a plank over a drain use? (a) beam (b) arch (c) dome (d) triangle
2. 2.True or false: a jar lid is a wheel and axle. (a) True (b) False
3. 3.True or false: skating on ice gives more friction. (a) True (b) False
4. 4.True or false: to run while holding tools is safe. (a) False (b) True
5. 5.💪 In a tug of war, one team pulls right with 90 N and the other pulls left with 45 N. What is the size of the net force, in newtons?
6. 6.True or false: an electrical engineer plans a space mission. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) making brittle joints (b) using a heavy roof (c) leaving out steel bars (d) keeping a simple shape
8. 8.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) put tools back after use (b) leave tools on the floor (c) tie back long hair (d) clamp wood before sawing
10. 10.Which of these uses an arch? (a) an electric pylon (b) a crane arm (c) a slab over a canal (d) a curved stone doorway
11. 11.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
12. 12.True or false: “hold up 500 g” is a constraint (a limit). (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) use at most 20 straws (b) be under 30 cm tall (c) lift a cup of water (d) fit on a school desk
14. 14.Which of these happens in the Improve step? (a) ask who will use it (b) think of wild ideas (c) draw a labelled diagram (d) make it better, retest
15. 15.⚖️ In a class 3 lever, what is in the middle? (a) the effort (b) the fulcrum (c) the pulley (d) the load
16. 16.True or false: a pair of tweezers is a class 2 lever (load in the middle). (a) False (b) True
17. 17.Which of these is caused by gravity? (a) rubbing hands warms them (b) a thrown ball comes down (c) squeezing a lemon (d) brakes stop a bicycle
18. 18.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) low down (c) on a thin pole (d) hanging outside
19. 19.🤝 Why do engineers work in teams? (a) to work alone (b) many skills and ideas (c) to finish nothing (d) to argue more
20. 20.Which of these uses a dome? (a) a roof truss (b) an electric pylon (c) an igloo (d) a lintel over a door
21. 21.Which of these needs a transparent material? (a) the core of a wire (b) a magnifier lens (c) a car seat belt (d) a boat hull
22. 22.🔄 Which design-process step is it to list the materials? (a) Plan (b) Imagine (c) Ask (d) Create
23. 23.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 4 N, a wooden plank 7 N, a carpet 9 N, ice 3 N. Which surface gave the least friction? (a) ice (b) a glass sheet (c) a carpet (d) a wooden plank
24. 24.Which of these uses triangles? (a) an old stone bridge (b) a fort gateway (c) a roof truss (d) a curved stone doorway
25. 25.Which of these is caused by gravity? (a) shoes grip the floor (b) rain falls to the ground (c) brakes stop a bicycle (d) a compass needle turns
26. 26.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
27. 27.♻️ Reduce, reuse or recycle: pulp old paper? (a) recycle (b) reuse (c) reduce
28. 28.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a constraint (b) a criterion
29. 29.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a movable pulley (b) a fixed pulley
30. 30.True or false: to hide a failed test is good testing. (a) False (b) True
31. 31.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
32. 32.⚙️ Which simple machine is a flagpole rope wheel? (a) pulley (b) wheel and axle (c) inclined plane (d) wedge
33. 33.⚖️ What is the pivot point of a lever called? (a) the effort (b) the load (c) the axle (d) the fulcrum
34. 34.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load × effort (d) load ÷ effort
35. 35.True or false: “cables tied down at ends” is a suspension bridge. (a) False (b) True
36. 36.🛠️ People need to reach a top floor fast. Which invention helps? (a) a telephone (b) a solar panel (c) a lift (d) a bridge
37. 37.True or false: “tall towers hold cables” is a beam bridge. (a) True (b) False
38. 38.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 50 cm and the load at 10 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
39. 39.What does the tester do? (a) writes down results (b) collects the supplies (c) keeps the team on track (d) checks the goals are met
40. 40.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a fixed pulley (b) a movable pulley

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