Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 292 · 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. Arjun (560 N) sits ? m from the pivot on one side; Kabir (420 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
2. 2.🔢 To follow the engineering design process, what comes right after “Imagine”? (a) Plan (b) Test (c) Create (d) Ask
3. 3.🤝 A teammate’s idea seems odd. What should you do first? (a) listen and ask why (b) laugh at it (c) walk away (d) ignore it
4. 4.⚖️ A lever bar balances. The load is 400 N at ? cm from the fulcrum. The effort is 200 N at 100 cm from the fulcrum on the other side. What is the missing distance in centimetres?
5. 5.True or false: a microscope helps people see very tiny things. (a) True (b) False
6. 6.🔺 A flat frame has 8 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
7. 7.🪝 Fixed or movable pulley: which one halves the effort? (a) a movable pulley (b) a fixed pulley
8. 8.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 14 N, ice 4 N, a glass sheet 6 N, a wooden plank 10 N. How many newtons more were needed on a carpet than on ice?
9. 9.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) build it with straws
10. 10.🔧 Which tool would you use to tighten a nut? (a) a tape measure (b) a protractor (c) a spanner (d) pliers
11. 11.True or false: to agree before changing is good teamwork. (a) False (b) True
12. 12.🛠️ What does an engineer mainly do? (a) designs useful solutions (b) grows crops (c) sells tickets (d) only paints pictures
13. 13.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
14. 14.♻️ Which is the BEST order to think about waste? (a) reuse, recycle, reduce (b) reduce, reuse, recycle (c) burn, bury, forget (d) recycle, reuse, reduce
15. 15.🪝 A pulley system has 2 rope sections holding up the load. To lift the load by 4 m, how many metres of rope must you pull?
16. 16.🔍 Which is the odd one out? (a) a ceiling fan (b) a dam (c) a bridge (d) a coral reef
17. 17.📋 Constraint: the tower must be no taller than 30 cm. The team’s tower is 24 cm tall. Is it within the constraint? (a) Yes (b) No
18. 18.Which of these is in tension (pulled)? (a) a table leg (b) a brick at a wall base (c) a pillar under a roof (d) a crane lifting cable
19. 19.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
20. 20.Which of these uses triangles? (a) a fort gateway (b) an old stone bridge (c) a round palace roof (d) a truss bridge side
21. 21.📐 A beam is 420 cm long. How long is it in metres? =
22. 22.True or false: chalk on a gym bar gives less friction. (a) False (b) True
23. 23.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
24. 24.True or false: a plank over a drain uses a dome. (a) True (b) False
25. 25.🌉 A beam bridge is 70 m long. Piers split it into equal spans of 35 m. How many spans are there?
26. 26.🧱 Which material is best for a window pane? (a) wood (b) steel (c) brick (d) glass
27. 27.🤝 Is it good or poor teamwork to help a stuck teammate? (a) good teamwork (b) poor teamwork
28. 28.🛠️ What does an engineer do before building anything? (a) buys every material (b) paints the model (c) builds at once (d) understands the problem
29. 29.🌉 In a stone arch bridge, the stones are in … (a) tension (b) no force (c) friction (d) compression
30. 30.🔺 Which strong shape does an electric pylon use? (a) arch (b) triangle (c) dome (d) beam
31. 31.♻️ Is diesel a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
32. 32.🤝 Is it good or poor teamwork to do all the work alone? (a) good teamwork (b) poor teamwork
33. 33.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
34. 34.True or false: chalk on a gym bar gives more friction. (a) True (b) False
35. 35.🌉 Which bridge type can cross the widest gap in one span? (a) beam bridge (b) arch bridge (c) log bridge (d) suspension bridge
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) test it only once (d) record every result
37. 37.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) on the rock (b) on the fulcrum (c) near the fulcrum (d) far from the fulcrum
38. 38.⚖️ A seesaw balances. Asha (? N) sits 2 m from the pivot on one side; Kabir (220 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
39. 39.⚖️ Which class of lever is a pair of tweezers? (a) class 2 (b) class 1 (c) class 3
40. 40.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 20 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1

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