Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 157 · 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.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
2. 2.🛞 More or less friction: a wet tiled floor? (a) more friction (b) less friction
3. 3.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
4. 4.♻️ Reduce, reuse or recycle: melt glass into new jars? (a) reduce (b) recycle (c) reuse
5. 5.📐 A beam is 200 cm long. How long is it in metres? =
6. 6.🔍 Which is the odd one out? (a) a suspension cable (b) a table leg (c) a pillar under a roof (d) a brick at a wall base
7. 7.🪢 Tension is a force that … (a) pulls or stretches (b) turns things (c) pushes or squeezes (d) heats things
8. 8.🧱 Which material is best for the core of an electric wire? (a) wood (b) copper (c) glass (d) rubber
9. 9.⚙️ Which simple machine is a steering wheel? (a) wedge (b) lever (c) screw (d) wheel and axle
10. 10.⚖️ A lever bar balances. The load is 60 N at 20 cm from the fulcrum. The effort is 60 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
11. 11.🏋️ A force of 10 N did 70 J of work. How many metres did the object move?
12. 12.🔢 To follow the engineering design process, which comes first: “Ask” or “Improve”? (a) Improve (b) Ask
13. 13.🛠️ What does an engineer mainly do? (a) only paints pictures (b) grows crops (c) sells tickets (d) designs useful solutions
14. 14.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a criterion (b) a constraint
15. 15.Which of these makes a building less safe in earthquakes? (a) raising heavy tanks high (b) keeping a simple shape (c) adding cross bracing (d) using flexible joints
16. 16.♻️ Which is the BEST order to think about waste? (a) burn, bury, forget (b) reuse, recycle, reduce (c) reduce, reuse, recycle (d) recycle, reuse, reduce
17. 17.🔄 Which design-process step is it to find the limits? (a) Imagine (b) Test (c) Plan (d) Ask
18. 18.🌉 In a suspension bridge, the main cables are in … (a) tension (b) friction (c) no force (d) compression
19. 19.True or false: a tyre with deep treads gives more friction. (a) False (b) True
20. 20.🧱 Which material is best for a window pane? (a) brick (b) steel (c) wood (d) glass
21. 21.Which of these needs a waterproof material? (a) a car seat belt (b) an umbrella cover (c) a plug pin (d) the core of a wire
22. 22.True or false: a lemon squeezer is a class 3 lever (effort in the middle). (a) True (b) False
23. 23.Which of these is caused by magnetic force? (a) shoes grip the floor (b) a thrown ball comes down (c) pedalling a cycle (d) a magnet picks up pins
24. 24.🔺 A beam bends under a load. Its top side is … (a) squeezed (compression) (b) not affected (c) floating (d) stretched (tension)
25. 25.🛞 More or less friction: a grippy rubber sole? (a) less friction (b) more friction
26. 26.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 80 N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
27. 27.True or false: a computer engineer designs car engines. (a) True (b) False
28. 28.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 50 cm and the load at 40 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
29. 29.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 30 cm and the load at 20 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
30. 30.🛞 Is friction helpful or a problem here: walking without slipping? (a) helpful (b) a problem
31. 31.Which of these happens in the Imagine step? (a) pick the build order (b) build the model (c) brainstorm many ideas (d) fix the weak part
32. 32.True or false: a lift is found in nature. (a) True (b) False
33. 33.🔢 To follow the engineering design process, which comes first: “Improve” or “Test”? (a) Test (b) Improve
34. 34.True or false: a rough doormat gives more friction. (a) True (b) False
35. 35.🌉 A beam bridge is 500 m long. Piers split it into equal spans of 50 m. How many spans are there?
36. 36.📐 On a plan, 1 cm stands for 2 m. A wall is 5 cm long on the plan. How long is the real wall, in metres?
37. 37.🧱 Which property matters most for a switch contact? (a) waterproof (b) heat insulator (c) flexible (d) electrical conductor
38. 38.💪 Which force pulls everything towards the Earth? (a) gravity (b) wind (c) magnetism (d) friction
39. 39.🏋️ A 15 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
40. 40.True or false: pushing a swing is a pull. (a) True (b) False

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