Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 102 · 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.True or false: a wheel on ball bearings gives more friction. (a) True (b) False
2. 2.🛞 More or less friction: skating on ice? (a) more friction (b) less friction
3. 3.Which of these happens in the Imagine step? (a) make it better, retest (b) ask who will use it (c) dream up possible fixes (d) follow the plan to build
4. 4.🔧 Which tool would you use to drive in a nail? (a) a saw (b) a hammer (c) a spanner (d) pliers
5. 5.True or false: to listen to every idea is good teamwork. (a) False (b) True
6. 6.📐 A beam is 260 cm long. How long is it in metres? =
7. 7.🛠️ Is a water filter made by engineers or found in nature? (a) found in nature (b) made by engineers
8. 8.Which job does an electrical engineer do? (a) runs a fertiliser plant (b) designs artificial limbs (c) plans a power grid (d) designs satellites
9. 9.Which of these uses triangles? (a) a plank over a drain (b) a curved stone doorway (c) an electric pylon (d) a fort gateway
10. 10.🪝 A wheel and axle is a big wheel fixed to … (a) a sharp wedge (b) a loose rope (c) a smaller rod (axle) (d) a flat ramp
11. 11.🌉 A beam bridge 210 m long is split by piers into 7 equal spans. How long is each span, in metres?
12. 12.🪢 Tension or compression: a swing chain? (a) tension (b) compression
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
14. 14.📐 On a plan, 1 cm stands for 10 m. A wall is 4 cm long on the plan. How long is the real wall, in metres?
15. 15.True or false: coal is a non-renewable energy source. (a) False (b) True
16. 16.Which of these uses a beam? (a) a bicycle frame (b) a plank over a drain (c) a roof truss (d) an igloo
17. 17.True or false: to share the work fairly is good teamwork. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a table leg (b) a stretched rubber band (c) a pillar under a roof (d) a tall bridge tower
19. 19.🔍 Which is the odd one out? (a) a grippy rubber sole (b) chalk on a gym bar (c) powder on a carrom board (d) a box pushed on carpet
20. 20.📐 On a plan, 1 cm stands for 2 m. A wall is 6 cm long on the plan. How long is the real wall, in metres?
21. 21.🏚️ Why is a wide base safer? (a) it is colourful (b) it is taller (c) it is lighter (d) it is harder to tip over
22. 22.📋 Criterion: the model bridge must hold at least 600 g. In the test it held 650 g. Does it meet the criterion? (a) No (b) Yes
23. 23.🔺 Which strong shape does a curved stone doorway use? (a) beam (b) triangle (c) arch (d) dome
24. 24.🔄 Which design-process step is it to measure its performance? (a) Ask (b) Create (c) Test (d) Improve
25. 25.True or false: a waterfall is found in nature. (a) False (b) True
26. 26.True or false: “the longest spans of all” is a suspension bridge. (a) False (b) True
27. 27.💪 A cart is pulled to the right with 65 N and to the left with 70 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
28. 28.🛞 More or less friction: a grippy rubber sole? (a) less friction (b) more friction
29. 29.🪢 Tension or compression: a table leg? (a) compression (b) tension
30. 30.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 3 N, a wooden plank 4 N, a carpet 5 N, sandpaper 6 N. Which surface gave the least friction? (a) a carpet (b) a wooden plank (c) sandpaper (d) ice
31. 31.⚙️ Which simple machine is a steering wheel? (a) screw (b) wheel and axle (c) lever (d) wedge
32. 32.🔍 Which is the odd one out? (a) a mobile phone (b) a lift (c) a seashell (d) a railway track
33. 33.🔍 Which is the odd one out? (a) oil on a squeaky hinge (b) chalk on a gym bar (c) a box pushed on carpet (d) a grippy rubber sole
34. 34.📐 A beam is 180 cm long. How long is it in metres? =
35. 35.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) only on Mondays (c) no, work stays the same (d) yes, by half
36. 36.⚖️ On a seesaw, a heavier child should sit … (a) on the pivot (b) farther from the pivot (c) anywhere (d) closer to the pivot
37. 37.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint
38. 38.💪 A box weighs 120 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
39. 39.🪢 Tension or compression: a tall bridge tower? (a) compression (b) tension
40. 40.🛞 Is friction helpful or a problem here: dragging a heavy box? (a) a problem (b) helpful

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