Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 862 · 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 fridge meet? (a) see very tiny things (b) store water for summer (c) make water safe to drink (d) keep food fresh longer
2. 2.True or false: to make a prototype is the Imagine step. (a) True (b) False
3. 3.🔢 To follow the engineering design process, what comes right after “Imagine”? (a) Ask (b) Create (c) Improve (d) Plan
4. 4.True or false: a movable pulley rises with the load. (a) False (b) True
5. 5.🤝 Why do engineers work in teams? (a) to finish nothing (b) to argue more (c) many skills and ideas (d) to work alone
6. 6.🛞 More or less friction: chalk on a gym bar? (a) more friction (b) less friction
7. 7.True or false: drawing up a well bucket is a push. (a) False (b) True
8. 8.📋 Criterion: the model bridge must hold at least 300 g. In the test it held 150 g. Does it meet the criterion? (a) Yes (b) No
9. 9.🔢 To follow the engineering design process, which comes first: “Improve” or “Ask”? (a) Ask (b) Improve
10. 10.📐 A beam is 460 cm long. How long is it in metres? =
11. 11.Which of these is an inclined plane? (a) a wood screw (b) a nutcracker (c) a truck loading ramp (d) a steering wheel
12. 12.🪝 A bucket weighing 340 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
13. 13.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1100 N box up it, in newtons? (ideal ramp, no friction)
14. 14.🔧 Which tool would you use to grip and bend wire? (a) sandpaper (b) pliers (c) a protractor (d) a hand drill
15. 15.Which of these happens in the Create step? (a) list the materials (b) dream up possible fixes (c) make a prototype (d) measure its performance
16. 16.📐 On a plan, 1 cm stands for 5 m. A wall is 5 cm long on the plan. How long is the real wall, in metres?
17. 17.🛠️ People need to keep food fresh longer. Which invention helps? (a) a dam (b) a bridge (c) a fridge (d) a lift
18. 18.True or false: a hanging lamp chain is in compression (pushed). (a) False (b) True
19. 19.♻️ Reduce, reuse or recycle: fix a dripping tap? (a) recycle (b) reuse (c) reduce
20. 20.🔺 A frame shaped like a pentagon is made of straws joined by loose pins, with 1 corner-to-corner brace. Is it rigid or wobbly? (a) rigid (b) wobbly
21. 21.⚖️ On a seesaw, a heavier child should sit … (a) anywhere (b) closer to the pivot (c) on the pivot (d) farther from the pivot
22. 22.⚖️ Which class of lever is a pair of kitchen tongs? (a) class 3 (b) class 2 (c) class 1
23. 23.True or false: a lemon squeezer is a class 2 lever (load in the middle). (a) True (b) False
24. 24.Which of these uses an arch? (a) an old stone bridge (b) a crane arm (c) an electric pylon (d) a bicycle frame
25. 25.🧱 Which property matters most for the core of a wire? (a) electrical conductor (b) heat insulator (c) transparent (d) flexible
26. 26.🪝 A bucket weighing 450 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
27. 27.🧪 A paper bridge was tested three times. It held 230 g, 210 g and 250 g. What is the mean (average) load it held, in grams?
28. 28.🔺 A flat frame has 7 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
29. 29.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
30. 30.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) twisted (b) stretched (tension) (c) squeezed (compression) (d) not affected
31. 31.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) only on Mondays (d) yes, by half
32. 32.⚖️ In a class 2 lever, what is in the middle? (a) the axle (b) the load (c) the fulcrum (d) the effort
33. 33.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
34. 34.🤝 A team plans for 55 minutes, builds for 15 minutes and then tests for 15 minutes, one after another. How many minutes is that in all?
35. 35.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) False (b) True
36. 36.Which of these is in tension (pulled)? (a) a tug of war rope (b) a tall bridge tower (c) a squeezed spring (d) a stone in an arch
37. 37.🛞 Is friction helpful or a problem here: brakes stopping a cycle? (a) a problem (b) helpful
38. 38.⚖️ A lever bar balances. The load is 450 N at ? cm from the fulcrum. The effort is 180 N at 50 cm from the fulcrum on the other side. What is the missing distance in centimetres?
39. 39.True or false: a biomedical engineer builds hospital scanners. (a) True (b) False
40. 40.🔺 Which strong shape does a round palace roof use? (a) dome (b) beam (c) arch (d) triangle

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