Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 329 · 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 simple machine is a window blind cord? (a) pulley (b) lever (c) wheel and axle (d) inclined plane
2. 2.True or false: a wheelbarrow is a class 1 lever (fulcrum in the middle). (a) False (b) True
3. 3.⚖️ On a seesaw, a heavier child should sit … (a) closer to the pivot (b) anywhere (c) farther from the pivot (d) on the pivot
4. 4.🔄 After testing, a design does not work well. What comes next? (a) Imagine (b) give up (c) Improve (d) Ask
5. 5.True or false: a rainbow is found in nature. (a) True (b) False
6. 6.🔢 To follow the engineering design process, what comes right after “Ask”? (a) Plan (b) Test (c) Improve (d) Imagine
7. 7.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) raising heavy tanks high (c) stacking loose bricks (d) having a wide base
8. 8.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) False (b) True
9. 9.🪝 What does a single fixed pulley change? (a) the size of the load (b) the direction of pull (c) the colour of rope (d) gravity
10. 10.Which of these is reduce (use less)? (a) use a jar as a pen stand (b) carry a cloth bag (c) melt cans into new cans (d) plant in old tyres
11. 11.🧑‍🔧 Which kind of engineer refines crude oil? (a) biomedical (b) aerospace (c) computer (d) chemical
12. 12.🧱 Which property matters most for a hair band? (a) flexible (b) waterproof (c) electrical conductor (d) transparent
13. 13.Which of these needs a flexible material? (a) a car windscreen (b) a hair band (c) a window pane (d) a roof sheet
14. 14.Which of these is a suspension bridge? (a) tall towers hold cables (b) a curve under the deck (c) a flat deck on piers (d) the simplest bridge
15. 15.🧱 Which property matters most for a tea flask lining? (a) heat insulator (b) waterproof (c) flexible (d) electrical conductor
16. 16.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they stop shaking (c) they are cheap (d) they look nice
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.⚖️ Which class of lever is a fishing rod? (a) class 1 (b) class 3 (c) class 2
19. 19.Which of these is recycle (make new things)? (a) refill a water bottle (b) use a jar as a pen stand (c) give old books away (d) pulp old paper
20. 20.🦺 In the workshop, is it safe to touch a hot glue tip? (a) safe (b) not safe
21. 21.🪢 A concrete slab weighing 8400 N rests evenly on 7 identical pillars. What compression force does each pillar carry, in newtons?
22. 22.True or false: oil on a squeaky hinge gives more friction. (a) False (b) True
23. 23.⚙️ Which simple machine is a nutcracker? (a) pulley (b) screw (c) lever (d) wheel and axle
24. 24.True or false: “pushes out on its ends” is an arch bridge. (a) False (b) True
25. 25.Which of these happens in the Improve step? (a) build the model (b) redesign after testing (c) find the limits (d) measure its performance
26. 26.🪝 A pulley system has 3 rope sections holding up the load. To lift the load by 4 m, how many metres of rope must you pull?
27. 27.What does the materials manager do? (a) checks the goals are met (b) shares out the jobs (c) runs the tests (d) collects the supplies
28. 28.🌉 Which bridge type: “a rope bridge in hills”? (a) beam bridge (b) suspension bridge (c) arch bridge
29. 29.⚖️ A seesaw balances. Ravi (560 N) sits ? m from the pivot on one side; Arjun (140 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
30. 30.🔺 Which strong shape does a fort gateway use? (a) beam (b) dome (c) triangle (d) arch
31. 31.🏋️ A machine lifts a load of 700 N when you push with 140 N. What is its mechanical advantage (MA)?
32. 32.⚖️ A lever balances when … (a) the bar is short (b) turning effects match (c) the fulcrum moves (d) both weights are equal
33. 33.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
34. 34.True or false: to wear safety goggles is not safe. (a) False (b) True
35. 35.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load ÷ effort (d) load + effort
36. 36.♻️ Is flowing river water a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
37. 37.True or false: a tall bridge tower is in tension (pulled). (a) False (b) True
38. 38.🛞 More or less friction: a wheel on ball bearings? (a) less friction (b) more friction
39. 39.🏋️ A 14 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
40. 40.🌉 A beam bridge 315 m long rests on the two river banks and on piers in between, making equal spans of 45 m. How many piers are there?

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