Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 647 · 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.⚖️ A seesaw balances. Ravi (100 N) sits ? m from the pivot on one side; Kabir (200 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
2. 2.🔺 Which shape keeps its shape best when its corners are pinned? (a) hexagon (b) triangle (c) square (d) rectangle
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.True or false: to own up to a mistake is good teamwork. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) the tip of a nail (b) an axe blade (c) a nut and bolt (d) a chisel
6. 6.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
7. 7.True or false: a crowbar is a wheel and axle. (a) True (b) False
8. 8.⚖️ Going along a lever from one end to the other, the order is: effort, load, fulcrum. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
9. 9.True or false: pushing a trolley is a push. (a) True (b) False
10. 10.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 7 cm long in the drawing. How long is the real car, in centimetres?
11. 11.True or false: skating on ice gives less friction. (a) True (b) False
12. 12.⚙️ Which simple machine is a claw hammer on a nail? (a) wheel and axle (b) screw (c) lever (d) pulley
13. 13.Which of these uses triangles? (a) an old stone bridge (b) a shelf on two brackets (c) a planetarium roof (d) a crane arm
14. 14.⚖️ A seesaw balances. Asha (? N) sits 1 m from the pivot on one side; Kabir (150 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
15. 15.♻️ Is ocean wave energy a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
16. 16.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
17. 17.🧱 Which property matters most for a water tank? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
18. 18.🌉 In a stone arch bridge, the stones are in … (a) friction (b) tension (c) no force (d) compression
19. 19.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
20. 20.🛞 Friction acts … (a) with the motion (b) only on ice (c) only upwards (d) against the motion
21. 21.🏋️ A 16 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
22. 22.💪 A bag has a mass of 34 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
23. 23.🏋️ A force of 240 N pushes a cart 9 m along the floor. How much work is done, in joules?
24. 24.🤝 Is it good or poor teamwork to ignore the team plan? (a) good teamwork (b) poor teamwork
25. 25.🔄 What is the FIRST step of the engineering design process? (a) Improve (b) Ask (c) Test (d) Create
26. 26.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) effort ÷ load (c) load × effort (d) load + effort
27. 27.True or false: “a flat deck on piers” is a suspension bridge. (a) True (b) False
28. 28.True or false: to define the problem is the Ask step. (a) True (b) False
29. 29.♻️ Is flowing river water a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
30. 30.📋 Constraint: the tower must be no taller than 40 cm. The team’s tower is 34 cm tall. Is it within the constraint? (a) No (b) Yes
31. 31.🌉 Which bridge type can cross the widest gap in one span? (a) arch bridge (b) beam bridge (c) log bridge (d) suspension bridge
32. 32.True or false: “a rope bridge in hills” is a suspension bridge. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
34. 34.🛠️ What does an engineer do before building anything? (a) builds at once (b) buys every material (c) paints the model (d) understands the problem
35. 35.🛞 Is friction helpful or a problem here: dragging a heavy box? (a) a problem (b) helpful
36. 36.True or false: a nutcracker is a class 1 lever (fulcrum in the middle). (a) True (b) False
37. 37.🌉 Which bridge type: “tall towers hold cables”? (a) suspension bridge (b) beam bridge (c) arch bridge
38. 38.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a movable pulley (b) a fixed pulley
39. 39.True or false: an umbrella cover needs a flexible material. (a) True (b) False
40. 40.🛠️ What does an engineer mainly do? (a) sells tickets (b) grows crops (c) designs useful solutions (d) only paints pictures

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