Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 72 · 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 job does an aerospace engineer do? (a) builds a website (b) designs satellites (c) designs school networks (d) designs hearing aids
2. 2.⚖️ A lever bar balances. The load is 200 N at ? cm from the fulcrum. The effort is 50 N at 40 cm from the fulcrum on the other side. What is the missing distance in centimetres?
3. 3.⚙️ How many simple machines are there in the usual list? (a) 3 (b) 10 (c) 12 (d) 6
4. 4.True or false: “use at most 20 straws” is a constraint (a limit). (a) True (b) False
5. 5.🪝 A well winch has a handle (wheel) of radius 10 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
6. 6.Which of these happens in the Test step? (a) redesign after testing (b) think of wild ideas (c) try it out (d) pick the build order
7. 7.🔄 What is the FIRST step of the engineering design process? (a) Improve (b) Ask (c) Create (d) Test
8. 8.♻️ A sustainable design … (a) wastes water (b) uses the most plastic (c) protects the future (d) lasts one day
9. 9.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 30 cm and the load at 50 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
10. 10.🔢 To follow the engineering design process, which comes first: “Ask” or “Create”? (a) Ask (b) Create
11. 11.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
12. 12.🛠️ Is a volcano made by engineers or found in nature? (a) made by engineers (b) found in nature
13. 13.🔺 A frame shaped like a square is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
14. 14.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) only if it is red (b) yes, always (c) no, it breaks a limit (d) yes, it works
15. 15.📐 Why do engineers use scale drawings? (a) to make them pretty (b) to hide sizes (c) big things fit on paper (d) to save ink only
16. 16.True or false: pulling a cart is a push. (a) True (b) False
17. 17.💪 A bag has a mass of 35 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
18. 18.True or false: a seesaw is a wedge. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) having a wide base (b) using a heavy roof (c) adding steel to concrete (d) keeping a simple shape
20. 20.🪢 A sign weighing 240 N hangs from 3 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
21. 21.⚖️ A lever bar balances. The load is 480 N at 20 cm from the fulcrum. The effort is 120 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
22. 22.⚖️ A lever bar balances. The load is 40 N at ? cm from the fulcrum. The effort is 60 N at 20 cm from the fulcrum on the other side. What is the missing distance in centimetres?
23. 23.🏚️ Three solid model towers are made of the same material. Tower A is 160 cm tall on a 40 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 30 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
24. 24.🔍 Which is the odd one out? (a) a table leg (b) a suspension cable (c) a tow rope on a car (d) a swing chain
25. 25.Which of these is a screw? (a) a water tap handle (b) a nutcracker (c) a playground slide (d) a wood screw
26. 26.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 40 N at 40 cm from the fulcrum on the other side. What is the missing force in newtons?
27. 27.True or false: to blame others for faults is poor teamwork. (a) True (b) False
28. 28.True or false: “use at most 20 straws” is a criterion (a goal). (a) True (b) False
29. 29.🌉 Which bridge type: “a curve under the deck”? (a) suspension bridge (b) beam bridge (c) arch bridge
30. 30.Which of these is a beam bridge? (a) pushes out on its ends (b) cables tied down at ends (c) a rope bridge in hills (d) the simplest bridge
31. 31.True or false: a broom when sweeping is a class 1 lever (fulcrum in the middle). (a) True (b) False
32. 32.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
33. 33.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 60 cm and the load at 70 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
34. 34.🛠️ People need to store water for summer. Which invention helps? (a) a lift (b) a dam (c) a microscope (d) a fridge
35. 35.📋 For a model bridge challenge, is “roll at least 2 metres” a constraint or a criterion? (a) a criterion (b) a constraint
36. 36.True or false: to change only one thing is good testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) touch a hot glue tip (b) leave tools on the floor (c) let adults use hot glue (d) play near a moving drill
38. 38.True or false: to drive in a nail, use a hammer. (a) True (b) False
39. 39.♻️ Is coal a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
40. 40.⚙️ A screw is really … (a) a tiny pulley (b) a kind of wheel (c) a ramp wrapped round (d) a bent lever

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