Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 17 · 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 cart is pulled to the right with 30 N and to the left with 25 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
2. 2.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
3. 3.🏋️ Pushing a crate 8 m took 1520 J of work. What force was used, in newtons?
4. 4.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a criterion (b) a constraint
5. 5.🤝 A team plans for 35 minutes, builds for 20 minutes and then tests for 5 minutes, one after another. How many minutes is that in all?
6. 6.⚖️ A lever bar balances. The load is 180 N at ? cm from the fulcrum. The effort is 180 N at 30 cm from the fulcrum on the other side. What is the missing distance in centimetres?
7. 7.🧑‍🔧 Which kind of engineer designs car engines? (a) mechanical (b) aerospace (c) computer (d) civil
8. 8.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 30 N at 100 cm from the fulcrum on the other side. What is the missing force in newtons?
9. 9.🔍 Which is the odd one out? (a) play near a moving drill (b) leave tools on the floor (c) use a cracked tool (d) carry scissors closed
10. 10.🔢 To follow the engineering design process, which is the LAST step? (a) Imagine (b) Improve (c) Plan (d) Ask
11. 11.🔺 How do engineers stop a square frame from wobbling? (a) make it bigger (b) take off a side (c) add a diagonal brace (d) paint it
12. 12.What does the tester do? (a) puts the model together (b) cuts and joins parts (c) runs the tests (d) keeps the team on track
13. 13.🔄 Which design-process step is it to try it out? (a) Create (b) Plan (c) Test (d) Imagine
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
15. 15.⚖️ Which class of lever is your forearm? (a) class 2 (b) class 1 (c) class 3
16. 16.🔍 Which is the odd one out? (a) using flexible joints (b) building tall and narrow (c) adding steel to concrete (d) having a wide base
17. 17.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 20 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 90 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
18. 18.🪝 A load of 150 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
19. 19.True or false: your forearm is a class 1 lever (fulcrum in the middle). (a) True (b) False
20. 20.🤝 A team of 3 shares 18 equal jobs fairly. Each job takes 6 minutes. How many minutes does each person work?
21. 21.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?
22. 22.♻️ Reduce, reuse or recycle: turn plastic into tiles? (a) reuse (b) recycle (c) reduce
23. 23.🤝 In a design team, who collects the supplies? (a) team leader (b) recorder (c) builder (d) materials manager
24. 24.🏋️ A 2 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
25. 25.True or false: to test it only once is poor testing. (a) False (b) True
26. 26.What does the team leader do? (a) puts the model together (b) keeps the design notes (c) checks the goals are met (d) keeps the team on track
27. 27.True or false: a civil engineer lays out a highway. (a) True (b) False
28. 28.🤝 How do engineers share a design with others? (a) only talking fast (b) secret notes (c) no drawings at all (d) clear labelled sketches
29. 29.💪 Which force is at work: a rolling ball slows? (a) magnetic force (b) muscular force (c) friction (d) gravity
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) use the same load (d) skip writing results
31. 31.🧱 Which property matters most for a raincoat? (a) transparent (b) flexible (c) waterproof (d) electrical conductor
32. 32.📋 For a model bridge challenge, is “hold up 500 g” a constraint or a criterion? (a) a constraint (b) a criterion
33. 33.📋 For a model bridge challenge, is “roll at least 2 metres” a constraint or a criterion? (a) a criterion (b) a constraint
34. 34.🔢 To follow the engineering design process, which is the FIRST step? (a) Ask (b) Create (c) Plan (d) Improve
35. 35.🔄 Which design-process step is it to make a prototype? (a) Imagine (b) Improve (c) Test (d) Create
36. 36.🌉 Which bridge type: “a rope bridge in hills”? (a) beam bridge (b) suspension bridge (c) arch bridge
37. 37.True or false: “the simplest bridge” is a suspension bridge. (a) False (b) True
38. 38.🌉 Which bridge type: “tall towers hold cables”? (a) suspension bridge (b) beam bridge (c) arch bridge
39. 39.Which of these happens in the Plan step? (a) measure its performance (b) follow the plan to build (c) check it against goals (d) list the materials
40. 40.📐 On a plan, 1 cm stands for 20 m. A wall is 14 cm long on the plan. How long is the real wall, in metres?

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids