Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 307 · 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.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) through a distance (d) without moving it
2. 2.🦺 How should you carry scissors? (a) points down, closed (b) while running (c) points up, open (d) by the blades
3. 3.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
4. 4.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they stop shaking (c) they bend, not break (d) they look nice
5. 5.📋 Constraint: the tower must be no taller than 30 cm. The team’s tower is 32 cm tall. Is it within the constraint? (a) No (b) Yes
6. 6.Which of these uses a beam? (a) an electric pylon (b) a planetarium roof (c) an old stone bridge (d) a plank over a drain
7. 7.True or false: a seesaw is a class 3 lever (effort in the middle). (a) True (b) False
8. 8.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
10. 10.True or false: a stretched rubber band is in compression (pushed). (a) False (b) True
11. 11.♻️ Which is the BEST order to think about waste? (a) burn, bury, forget (b) reduce, reuse, recycle (c) recycle, reuse, reduce (d) reuse, recycle, reduce
12. 12.💪 A box weighs 300 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
13. 13.📐 How many metres are in 1 kilometre? (a) 10 (b) 10000 (c) 1000 (d) 100
14. 14.⚙️ Which simple machine is a bottle opener? (a) wheel and axle (b) lever (c) inclined plane (d) pulley
15. 15.Which of these is a beam bridge? (a) deck hangs from cables (b) stones squeezed together (c) a log across a stream (d) a rope bridge in hills
16. 16.🌉 A beam bridge is 150 m long. Piers split it into equal spans of 25 m. How many spans are there?
17. 17.🪢 A sign weighing 200 N hangs from 2 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
18. 18.True or false: “fit on a school desk” is a criterion (a goal). (a) False (b) True
19. 19.⚖️ A lever balances when … (a) the fulcrum moves (b) both weights are equal (c) turning effects match (d) the bar is short
20. 20.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
21. 21.♻️ A sustainable design … (a) protects the future (b) wastes water (c) lasts one day (d) uses the most plastic
22. 22.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 3 N, a wooden plank 4 N, a carpet 7 N, sandpaper 9 N. Which surface gave the least friction? (a) ice (b) a wooden plank (c) a carpet (d) sandpaper
23. 23.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a constraint (b) a criterion
24. 24.📐 On a plan, 1 cm stands for 2 m. A wall is 2 cm long on the plan. How long is the real wall, in metres?
25. 25.True or false: a bridge helps people cross a wide river. (a) False (b) True
26. 26.⚖️ A seesaw balances. Arjun (570 N) sits ? m from the pivot on one side; Meena (760 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
27. 27.🤝 In a design team, who writes down results? (a) materials manager (b) builder (c) recorder (d) team leader
28. 28.True or false: to define the problem is the Create step. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) rubber (b) glass (c) brass (d) cotton cloth
30. 30.True or false: a hair band needs a flexible material. (a) False (b) True
31. 31.⚖️ Which class of lever is a lemon squeezer? (a) class 1 (b) class 3 (c) class 2
32. 32.Which of these is a suspension bridge? (a) stones squeezed together (b) the simplest bridge (c) a flat deck on piers (d) a rope bridge in hills
33. 33.Which of these is an inclined plane? (a) a round doorknob (b) a road up a hill (c) an axe blade (d) a seesaw
34. 34.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
35. 35.🛞 Is friction helpful or a problem here: shoe soles wearing out? (a) helpful (b) a problem
36. 36.🏋️ A 13 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
37. 37.True or false: a civil engineer refines crude oil. (a) True (b) False
38. 38.True or false: to follow the plan to build is the Improve step. (a) True (b) False
39. 39.♻️ Reduce, reuse or recycle: fix a dripping tap? (a) reuse (b) recycle (c) reduce
40. 40.True or false: “float for 1 minute” is a criterion (a goal). (a) True (b) False

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