Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 421 · 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 makes a building less safe in earthquakes? (a) keeping a simple shape (b) making brittle joints (c) having a wide base (d) using a light roof
2. 2.📐 On a plan, 1 cm stands for 2 m. A real bridge is 22 m long. How long is it on the plan, in centimetres?
3. 3.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
4. 4.True or false: a fixed pulley hangs on the rope loop. (a) False (b) True
5. 5.🪢 Tension or compression: a pillar under a roof? (a) tension (b) compression
6. 6.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False
7. 7.🛠️ People need to make water safe to drink. Which invention helps? (a) a telephone (b) a tunnel (c) a fridge (d) a water filter
8. 8.True or false: a stretched rubber band is in tension (pulled). (a) False (b) True
9. 9.🌉 What holds up a long beam bridge in the middle? (a) balloons (b) cables only (c) piers (d) nothing
10. 10.🔺 A flat frame has 5 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
11. 11.📐 On a plan, 1 cm stands for 5 m. A real bridge is 70 m long. How long is it on the plan, in centimetres?
12. 12.🤝 Is it good or poor teamwork to agree before changing? (a) poor teamwork (b) good teamwork
13. 13.♻️ Is natural gas a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
14. 14.Which of these happens in the Improve step? (a) list the materials (b) pick the build order (c) fix the weak part (d) define the problem
15. 15.🛞 More or less friction: a wet tiled floor? (a) less friction (b) more friction
16. 16.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a movable pulley (b) a fixed pulley
17. 17.🔍 Which is the odd one out? (a) skating on ice (b) oil on a squeaky hinge (c) a rough doormat (d) a wheel on ball bearings
18. 18.🧱 Which material is best for a window pane? (a) wood (b) brick (c) glass (d) steel
19. 19.🏋️ Pushing a crate 8 m took 160 J of work. What force was used, in newtons?
20. 20.🏋️ Pushing a crate 5 m took 900 J of work. What force was used, in newtons?
21. 21.🌉 A beam bridge 270 m long is split by piers into 9 equal spans. How long is each span, in metres?
22. 22.True or false: to drive in a nail, use a hammer. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a mountain (b) a river (c) a seashell (d) a bridge
24. 24.⚙️ How many simple machines are there in the usual list? (a) 12 (b) 10 (c) 3 (d) 6
25. 25.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
26. 26.True or false: an electric pylon uses triangles. (a) True (b) False
27. 27.Which of these needs a heat insulator? (a) a cooking pot handle (b) an umbrella cover (c) a plug pin (d) a window pane
28. 28.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) chemical (b) biomedical (c) civil (d) mechanical
29. 29.True or false: the core of a wire needs an electrical conductor. (a) True (b) False
30. 30.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) what is for lunch? (b) who won the match? (c) how can we build it? (d) why is the sky blue?
31. 31.🏋️ An 8 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
32. 32.🪢 Tension or compression: a tall bridge tower? (a) tension (b) compression
33. 33.Which of these uses an arch? (a) an igloo (b) a shelf on two brackets (c) a slab over a canal (d) an old stone bridge
34. 34.🔺 Which strong shape does a roof truss use? (a) beam (b) dome (c) triangle (d) arch
35. 35.True or false: a banyan tree is made by engineers. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a tug of war rope (b) a stone in an arch (c) a hanging lamp chain (d) a stretched rubber band
37. 37.⚖️ A lever bar balances. The load is 480 N at 40 cm from the fulcrum. The effort is ? N at 60 cm from the fulcrum on the other side. What is the missing force in newtons?
38. 38.True or false: to tie back long hair is safe. (a) False (b) True
39. 39.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
40. 40.📐 A beam is 710 cm long. How long is it in metres? =

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