Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 958 · 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 lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 80 N at 60 cm from the fulcrum on the other side. What is the missing force in newtons?
2. 2.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 8 N, ice 4 N, a wooden plank 5 N, a carpet 7 N. Which surface gave the least friction? (a) a carpet (b) ice (c) a wooden plank (d) sandpaper
3. 3.🔢 To follow the engineering design process, what comes right after “Imagine”? (a) Test (b) Ask (c) Plan (d) Create
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
5. 5.🔍 Which is the odd one out? (a) cotton cloth (b) clay pottery (c) rubber (d) iron
6. 6.💪 Two children push a box to the right, one with 15 N and the other with 80 N. What is the net (total) force on the box, in newtons?
7. 7.♻️ A project report has 24 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
8. 8.Which of these is caused by magnetic force? (a) squeezing a lemon (b) a thrown ball comes down (c) rain falls to the ground (d) a magnet picks up pins
9. 9.True or false: to play near a moving drill is safe. (a) False (b) True
10. 10.🤝 A teammate’s idea seems odd. What should you do first? (a) ignore it (b) walk away (c) listen and ask why (d) laugh at it
11. 11.True or false: a tug of war is a pull. (a) False (b) True
12. 12.⚖️ In a class 3 lever, what is in the middle? (a) the effort (b) the load (c) the pulley (d) the fulcrum
13. 13.🪝 A bucket weighing 270 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
14. 14.Which of these uses triangles? (a) an igloo (b) a fort gateway (c) a bicycle frame (d) an old stone bridge
15. 15.🔍 Which is the odd one out? (a) a stretched rubber band (b) a hanging lamp chain (c) a brick at a wall base (d) a crane lifting cable
16. 16.📐 On a plan, 1 cm stands for 10 m. A wall is 18 cm long on the plan. How long is the real wall, in metres?
17. 17.💪 In a tug of war, one team pulls left with 30 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
18. 18.True or false: “finish in 40 minutes” is a criterion (a goal). (a) True (b) False
19. 19.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
20. 20.📐 On a plan, 1 cm stands for 2 m. A real bridge is 8 m long. How long is it on the plan, in centimetres?
21. 21.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 0 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
22. 22.🔺 Which strong shape does a truss bridge side use? (a) beam (b) arch (c) triangle (d) dome
23. 23.🔄 In which step do engineers draw a labelled diagram? (a) Test (b) Improve (c) Plan (d) Ask
24. 24.Which of these is found in nature? (a) a bridge (b) a mobile phone (c) a coral reef (d) a bicycle
25. 25.⚖️ A lever bar balances. The load is 100 N at 20 cm from the fulcrum. The effort is ? N at 100 cm from the fulcrum on the other side. What is the missing force in newtons?
26. 26.True or false: “a rope bridge in hills” is a suspension bridge. (a) False (b) True
27. 27.🏋️ Pushing a crate 1 m took 400 J of work. What force was used, in newtons?
28. 28.Which of these is in tension (pulled)? (a) a bridge pier (b) a tow rope on a car (c) a squeezed spring (d) a pillar under a roof
29. 29.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
30. 30.True or false: to measure the same way is poor testing. (a) False (b) True
31. 31.⚙️ Which simple machine is the tip of a nail? (a) wedge (b) wheel and axle (c) lever (d) screw
32. 32.⚙️ Which simple machine is a crane hook block? (a) wheel and axle (b) pulley (c) inclined plane (d) lever
33. 33.True or false: a computer engineer builds a website. (a) True (b) False
34. 34.♻️ A sustainable design … (a) wastes water (b) protects the future (c) uses the most plastic (d) lasts one day
35. 35.True or false: biogas from waste is a renewable energy source. (a) False (b) True
36. 36.Which job is a tape measure for? (a) measure an angle (b) tighten a nut (c) measure a long length (d) cut a wooden plank
37. 37.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 5 N, sandpaper 7 N, a glass sheet 1 N, a wooden plank 4 N. Which surface gave the least friction? (a) a wooden plank (b) a carpet (c) a glass sheet (d) sandpaper
38. 38.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) aerospace (b) civil (c) chemical (d) computer
39. 39.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) only on Mondays (c) yes, always (d) no, work stays the same
40. 40.Which job does a chemical engineer do? (a) designs a metro tunnel (b) designs hearing aids (c) designs a paint factory (d) designs a flyover

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