Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 78 · 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.🤝 Why do engineers work in teams? (a) to finish nothing (b) to work alone (c) to argue more (d) many skills and ideas
2. 2.🔄 Which design-process step is it to find the limits? (a) Imagine (b) Ask (c) Test (d) Plan
3. 3.♻️ Reduce, reuse or recycle: reuse gift paper? (a) recycle (b) reduce (c) reuse
4. 4.True or false: a telephone helps people talk to someone far away. (a) True (b) False
5. 5.⚖️ In a class 3 lever, what is in the middle? (a) the load (b) the fulcrum (c) the pulley (d) the effort
6. 6.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 3 N, a wooden plank 7 N, a carpet 9 N, ice 2 N. How many newtons more were needed on a carpet than on ice?
7. 7.Which of these happens in the Plan step? (a) ask who will use it (b) check it against goals (c) pick the build order (d) make it better, retest
8. 8.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) balanced (c) gravity (d) unbalanced
9. 9.Which of these is reduce (use less)? (a) use a jar as a pen stand (b) give old books away (c) carry a cloth bag (d) refill a water bottle
10. 10.🌉 A beam bridge is 150 m long. Piers split it into equal spans of 15 m. How many spans are there?
11. 11.🛠️ People need to carry many people far. Which invention helps? (a) a dam (b) a train (c) a water filter (d) a tunnel
12. 12.🔍 Which is the odd one out? (a) leaving out steel bars (b) adding cross bracing (c) making brittle joints (d) using a heavy roof
13. 13.⚖️ A seesaw balances. Arjun (? N) sits 3 m from the pivot on one side; Ravi (300 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
14. 14.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a constraint (b) a criterion
15. 15.♻️ Which is the BEST order to think about waste? (a) recycle, reuse, reduce (b) burn, bury, forget (c) reduce, reuse, recycle (d) reuse, recycle, reduce
16. 16.📋 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
17. 17.Which of these is a wheel and axle? (a) a playground slide (b) a crane hook block (c) a screw jack (d) a round doorknob
18. 18.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 14 cm long in the drawing. How long is the real car, in centimetres?
19. 19.⚖️ Going along a lever from one end to the other, the order is: load, fulcrum, effort. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
20. 20.True or false: to check it against goals is the Improve step. (a) False (b) True
21. 21.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 30 cm and the load at 40 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
22. 22.True or false: an old stone bridge uses a dome. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a bottle cap (b) a chisel (c) a wood screw (d) a jar lid
24. 24.🤝 Is it good or poor teamwork to hide a mistake? (a) good teamwork (b) poor teamwork
25. 25.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
26. 26.True or false: an electrical engineer plans a power grid. (a) False (b) True
27. 27.⚖️ A seesaw balances. Arjun (240 N) sits 1 m from the pivot on one side; Ravi (? N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
28. 28.🪢 Compression is a force that … (a) pushes or squeezes (b) makes light (c) cools things (d) pulls or stretches
29. 29.🌉 Which bridge type: “a rope bridge in hills”? (a) suspension bridge (b) beam bridge (c) arch bridge
30. 30.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a constraint (b) a criterion
31. 31.Which job does a chemical engineer do? (a) refines crude oil (b) designs school networks (c) designs a gearbox (d) designs electric motors
32. 32.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) computer (b) aerospace (c) civil (d) chemical
33. 33.⚙️ Most simple machines make work easier by letting us … (a) switch off gravity (b) make new energy (c) stop all friction (d) use a smaller force
34. 34.🤝 In a design team, who keeps the team on track? (a) materials manager (b) recorder (c) builder (d) team leader
35. 35.🛠️ What does an engineer mainly do? (a) sells tickets (b) only paints pictures (c) designs useful solutions (d) grows crops
36. 36.Which of these is in compression (pushed)? (a) a crane lifting cable (b) a tent guy rope (c) a suspension cable (d) a stone in an arch
37. 37.🏋️ Pushing a crate 1 m took 490 J of work. What force was used, in newtons?
38. 38.🤝 A teammate’s idea seems odd. What should you do first? (a) laugh at it (b) ignore it (c) listen and ask why (d) walk away
39. 39.📋 Constraint: the tower must be no taller than 70 cm. The team’s tower is 70 cm tall. Is it within the constraint? (a) Yes (b) No
40. 40.True or false: a rainbow is made by engineers. (a) True (b) False

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