Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 429 · 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 need does a water filter meet? (a) make water safe to drink (b) reach a top floor fast (c) keep food fresh longer (d) go through a mountain
2. 2.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a constraint (b) a criterion
3. 3.🪝 A well winch has a handle (wheel) of radius 10 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
4. 4.🪢 A sign weighing 280 N hangs from 4 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
5. 5.📐 A beam is 510 cm long. How long is it in metres? =
6. 6.🏋️ A 4 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
7. 7.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a glass sheet 2 N, a wooden plank 6 N, sandpaper 7 N. Which surface gave the most friction? (a) a glass sheet (b) a wooden plank (c) sandpaper (d) ice
8. 8.🔧 Which tool would you use to measure a long length? (a) a hammer (b) a hand drill (c) a tape measure (d) sandpaper
9. 9.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they are cheap (c) they stop shaking (d) they bend, not break
10. 10.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) biomedical (b) chemical (c) civil (d) mechanical
11. 11.🔄 What is the FIRST step of the engineering design process? (a) Test (b) Ask (c) Create (d) Improve
12. 12.🌉 A beam bridge 80 m long is split by piers into 2 equal spans. How long is each span, in metres?
13. 13.🤝 A team plans for 20 minutes, builds for 45 minutes and then tests for 15 minutes, one after another. How many minutes is that in all?
14. 14.🌉 Which bridge type: “tall towers hold cables”? (a) beam bridge (b) suspension bridge (c) arch bridge
15. 15.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) civil (b) chemical (c) computer (d) aerospace
16. 16.What does the team leader do? (a) tracks what is used up (b) keeps the team on track (c) checks the goals are met (d) collects the supplies
17. 17.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
18. 18.🔍 Which is the odd one out? (a) iron (b) brass (c) rubber (d) graphite
19. 19.⚖️ A lever bar balances. The load is 100 N at 10 cm from the fulcrum. The effort is ? N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
20. 20.⚙️ How many simple machines are there in the usual list? (a) 3 (b) 12 (c) 10 (d) 6
21. 21.True or false: to run while holding tools is safe. (a) True (b) False
22. 22.True or false: to change only one thing is good testing. (a) False (b) True
23. 23.🧑‍🔧 Which kind of engineer designs factory machines? (a) aerospace (b) biomedical (c) mechanical (d) civil
24. 24.🛠️ Is a railway track made by engineers or found in nature? (a) made by engineers (b) found in nature
25. 25.⚖️ On a seesaw, a heavier child should sit … (a) on the pivot (b) anywhere (c) closer to the pivot (d) farther from the pivot
26. 26.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
27. 27.💪 Which force is at work: lifting a school bag? (a) magnetic force (b) friction (c) gravity (d) muscular force
28. 28.Which job does a biomedical engineer do? (a) writes app software (b) designs a flyover (c) designs hearing aids (d) lays out a highway
29. 29.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
30. 30.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load ÷ effort (c) load × effort (d) effort ÷ load
31. 31.True or false: a rainbow is found in nature. (a) False (b) True
32. 32.⚖️ A lever bar balances. The load is 80 N at 30 cm from the fulcrum. The effort is 120 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
33. 33.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
34. 34.🤝 Is it good or poor teamwork to help a stuck teammate? (a) good teamwork (b) poor teamwork
35. 35.🛠️ People need to store water for summer. Which invention helps? (a) a bridge (b) a dam (c) a solar panel (d) a microscope
36. 36.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 30 cm and the load at 60 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
37. 37.🪝 A load of 630 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
38. 38.🔢 To follow the engineering design process, what comes right after “Create”? (a) Plan (b) Test (c) Ask (d) Improve
39. 39.🔍 Which is the odd one out? (a) fit on a school desk (b) use at most 20 straws (c) finish in 40 minutes (d) float for 1 minute
40. 40.⚖️ A seesaw balances. Meena (600 N) sits 4 m from the pivot on one side; Asha (800 N) sits ? m from the pivot on the other side. What is the missing distance in metres?

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