Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 166 · 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 seesaw balances. Zoya (190 N) sits ? m from the pivot on one side; Arjun (190 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
2. 2.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
3. 3.🔄 Which design-process step is it to brainstorm many ideas? (a) Improve (b) Ask (c) Imagine (d) Create
4. 4.🏋️ A machine lifts a load of 960 N when you push with 160 N. What is its mechanical advantage (MA)?
5. 5.True or false: to make a prototype is the Ask step. (a) False (b) True
6. 6.Which of these happens in the Create step? (a) draw a labelled diagram (b) list the materials (c) follow the plan to build (d) ask who will use it
7. 7.True or false: a civil engineer lays out a highway. (a) True (b) False
8. 8.🪝 A load of 560 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) measure the same way (d) change only one thing
10. 10.🤝 A team plans for 20 minutes, builds for 15 minutes and then tests for 5 minutes, one after another. How many minutes is that in all?
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) load it with coins
12. 12.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 5 m, how many metres of rope must you pull?
13. 13.True or false: a mountain is made by engineers. (a) False (b) True
14. 14.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a constraint (b) a criterion
15. 15.🏋️ A 17 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
16. 16.🌉 Which bridge type can cross the widest gap in one span? (a) beam bridge (b) log bridge (c) suspension bridge (d) arch bridge
17. 17.🔄 Is the engineering design process done only once? (a) yes, only once (b) only for big jobs (c) only on Sundays (d) no, it repeats
18. 18.🔍 Which is the odd one out? (a) using a heavy roof (b) raising heavy tanks high (c) using flexible joints (d) building tall and narrow
19. 19.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) flexible (c) transparent (d) heat insulator
20. 20.True or false: a plug pin needs an electrical conductor. (a) True (b) False
21. 21.🛞 More or less friction: sand on a slippery path? (a) less friction (b) more friction
22. 22.🏋️ A force of 140 N pushes a cart 2 m along the floor. How much work is done, in joules?
23. 23.True or false: “keep ice for 1 hour” is a criterion (a goal). (a) True (b) False
24. 24.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) what is for lunch? (b) how can we build it? (c) who won the match? (d) why is the sky blue?
25. 25.⚖️ A lever bar balances. The load is 40 N at 10 cm from the fulcrum. The effort is ? N at 40 cm from the fulcrum on the other side. What is the missing force in newtons?
26. 26.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load ÷ effort (d) load + effort
27. 27.🏋️ A 3 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
28. 28.⚖️ A lever balances when … (a) both weights are equal (b) turning effects match (c) the fulcrum moves (d) the bar is short
29. 29.True or false: a fixed pulley makes you pull 2× rope. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a stone in an arch (b) a suspension cable (c) a table leg (d) a squeezed spring
31. 31.True or false: a chemical engineer designs a paint factory. (a) False (b) True
32. 32.⚖️ A seesaw balances. Kabir (? N) sits 1 m from the pivot on one side; Asha (110 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
33. 33.Which job does a mechanical engineer do? (a) designs electric motors (b) designs a gearbox (c) designs hearing aids (d) plans a dam
34. 34.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
35. 35.🪢 Tension or compression: a pillar under a roof? (a) tension (b) compression
36. 36.🔺 One side of a straw bridge is a row of 12 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
37. 37.🔄 In which step do engineers draw a labelled diagram? (a) Test (b) Plan (c) Improve (d) Ask
38. 38.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
39. 39.⚙️ Which simple machine is a truck loading ramp? (a) inclined plane (b) wheel and axle (c) screw (d) lever
40. 40.🔢 To follow the engineering design process, which comes first: “Plan” or “Ask”? (a) Plan (b) Ask

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