Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 57 · 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 happens in the Imagine step? (a) make it better, retest (b) brainstorm many ideas (c) try it out (d) make a prototype
2. 2.🌉 A beam bridge 225 m long is split by piers into 5 equal spans. How long is each span, in metres?
3. 3.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 30 cm and the load at 60 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
4. 4.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a constraint (b) a criterion
5. 5.Which of these is a screw? (a) a road up a hill (b) a flagpole rope wheel (c) a screw jack (d) a window blind cord
6. 6.True or false: a computer engineer lays out a highway. (a) True (b) False
7. 7.True or false: a box pushed on carpet gives more friction. (a) True (b) False
8. 8.🧑‍🔧 Which kind of engineer designs a flyover? (a) electrical (b) biomedical (c) aerospace (d) civil
9. 9.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) how can we build it? (b) what is for lunch? (c) why is the sky blue? (d) who won the match?
10. 10.📐 How many metres are in 1 kilometre? (a) 100 (b) 1000 (c) 10000 (d) 10
11. 11.📐 How many centimetres are in 1 metre? (a) 100 (b) 10 (c) 60 (d) 1000
12. 12.⚖️ A lever bar balances. The load is 60 N at 40 cm from the fulcrum. The effort is 80 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
13. 13.Which of these happens in the Ask step? (a) draw a labelled diagram (b) brainstorm many ideas (c) try it out (d) define the problem
14. 14.True or false: a road up a hill is an inclined plane. (a) False (b) True
15. 15.🔄 Which design-process step is it to make a prototype? (a) Plan (b) Create (c) Test (d) Ask
16. 16.Which of these is found in nature? (a) a railway track (b) a cloud (c) a ceiling fan (d) a water filter
17. 17.🏋️ A 19 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
18. 18.🪝 A well winch has a handle (wheel) of radius 24 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
19. 19.True or false: a stretched rubber band is in tension (pulled). (a) True (b) False
20. 20.🪝 A load of 60 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
21. 21.🔧 Which tool would you use to measure a long length? (a) a tape measure (b) a spanner (c) pliers (d) a screwdriver
22. 22.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 270 N at 100 cm from the fulcrum on the other side. What is the missing force in newtons?
23. 23.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 80 cm and the load at 20 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
24. 24.🔄 In which step do engineers draw a labelled diagram? (a) Test (b) Ask (c) Improve (d) Plan
25. 25.🪝 A load of 360 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
26. 26.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) hanging outside (c) on a thin pole (d) low down
27. 27.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
28. 28.♻️ A sustainable design … (a) uses the most plastic (b) lasts one day (c) wastes water (d) protects the future
29. 29.🦺 In the workshop, is it safe to cut away from your body? (a) not safe (b) safe
30. 30.🔍 Which is the odd one out? (a) a mountain (b) a rainbow (c) a cloud (d) a ceiling fan
31. 31.🌉 What holds up a long beam bridge in the middle? (a) nothing (b) piers (c) balloons (d) cables only
32. 32.🔍 Which is the odd one out? (a) a temple column (b) a crane lifting cable (c) a table leg (d) a squeezed spring
33. 33.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
34. 34.🔍 Which is the odd one out? (a) building tall and narrow (b) keeping a simple shape (c) having a wide base (d) adding steel to concrete
35. 35.Which of these is reduce (use less)? (a) give old books away (b) reuse gift paper (c) carry a cloth bag (d) melt cans into new cans
36. 36.Which of these is caused by friction? (a) a river flows downhill (b) lifting a school bag (c) a thrown ball comes down (d) brakes stop a bicycle
37. 37.True or false: to change only one thing is good testing. (a) True (b) False
38. 38.🤝 How do engineers share a design with others? (a) secret notes (b) no drawings at all (c) clear labelled sketches (d) only talking fast
39. 39.True or false: a cloud is made by engineers. (a) False (b) True
40. 40.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a constraint (b) a criterion

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