Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 672 · 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 of these is recycle (make new things)? (a) melt glass into new jars (b) reuse gift paper (c) fix a dripping tap (d) switch off unused lights
2. 2.♻️ Reduce, reuse or recycle: turn plastic into tiles? (a) recycle (b) reuse (c) reduce
3. 3.True or false: wind is a renewable energy source. (a) False (b) True
4. 4.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
5. 5.⚖️ A lever bar balances. The load is 90 N at ? cm from the fulcrum. The effort is 30 N at 30 cm from the fulcrum on the other side. What is the missing distance in centimetres?
6. 6.⚖️ A lever bar balances. The load is 120 N at 30 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?
7. 7.📐 On a plan, 1 cm stands for 20 m. A real bridge is 100 m long. How long is it on the plan, in centimetres?
8. 8.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) stacking loose bricks (c) raising heavy tanks high (d) fitting rubber base pads
9. 9.Which job does a civil engineer do? (a) designs a flyover (b) designs factory machines (c) designs power lines (d) designs satellites
10. 10.True or false: an aerospace engineer designs aeroplane wings. (a) False (b) True
11. 11.📋 Criterion: the model bridge must hold at least 800 g. In the test it held 650 g. Does it meet the criterion? (a) Yes (b) No
12. 12.True or false: a computer engineer designs a metro tunnel. (a) True (b) False
13. 13.📋 Criterion: the model bridge must hold at least 300 g. In the test it held 250 g. Does it meet the criterion? (a) Yes (b) No
14. 14.🤝 A team plans for 25 minutes, builds for 40 minutes and then tests for 15 minutes, one after another. How many minutes is that in all?
15. 15.Which of these happens in the Ask step? (a) make it better, retest (b) fix the weak part (c) brainstorm many ideas (d) find the limits
16. 16.True or false: to guess, do not measure is good testing. (a) True (b) False
17. 17.🔄 Is the engineering design process done only once? (a) only for big jobs (b) no, it repeats (c) yes, only once (d) only on Sundays
18. 18.True or false: to use a cracked tool is safe. (a) True (b) False
19. 19.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) glass (d) steel
20. 20.🔍 Which is the odd one out? (a) a seashell (b) a mountain (c) a river (d) a mobile phone
21. 21.🔍 Which is the odd one out? (a) a knife edge (b) a door stopper (c) a well-bucket rope wheel (d) a chisel
22. 22.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) joule (J) (d) watt hour
23. 23.🔢 To follow the engineering design process, which comes first: “Improve” or “Test”? (a) Improve (b) Test
24. 24.True or false: “a curve under the deck” is an arch bridge. (a) True (b) False
25. 25.🦺 In the workshop, is it safe to cut away from your body? (a) not safe (b) safe
26. 26.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 100 N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
27. 27.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
28. 28.Which of these is reuse (use again)? (a) turn plastic into tiles (b) give old books away (c) carry a cloth bag (d) print on both sides
29. 29.True or false: to test it only once is good testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) load it with coins
31. 31.🛠️ What does an engineer mainly do? (a) sells tickets (b) grows crops (c) only paints pictures (d) designs useful solutions
32. 32.🔧 Which tool would you use to drive in a nail? (a) a protractor (b) a hammer (c) a saw (d) a screwdriver
33. 33.💪 Two children push a box to the right, one with 15 N and the other with 5 N. What is the net (total) force on the box, in newtons?
34. 34.🛞 More or less friction: skating on ice? (a) more friction (b) less friction
35. 35.⚖️ A seesaw balances. Meena (640 N) sits 4 m from the pivot on one side; Kabir (640 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
36. 36.🪢 Which material is good in tension but useless in compression? (a) a rope (b) a concrete block (c) a brick (d) a stone
37. 37.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
38. 38.🧱 Which material is best for a cooking pot handle? (a) copper (b) iron (c) aluminium (d) wood or plastic
39. 39.True or false: to agree before changing is poor teamwork. (a) True (b) False
40. 40.True or false: an electrical engineer designs electric motors. (a) False (b) True

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