Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 676 · 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.🛞 More or less friction: a tyre with deep treads? (a) less friction (b) more friction
2. 2.♻️ Is natural gas a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
3. 3.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 15 cm long in the drawing. How long is the real car, in centimetres?
4. 4.🏋️ A machine lifts a load of 240 N when you push with 80 N. What is its mechanical advantage (MA)?
5. 5.True or false: a bottle cap is a lever. (a) False (b) True
6. 6.True or false: a box pushed on carpet gives more friction. (a) False (b) True
7. 7.📐 A beam is 700 cm long. How long is it in metres? =
8. 8.🧱 Which property matters most for a car seat belt? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
9. 9.🔄 After testing, a design does not work well. What comes next? (a) give up (b) Ask (c) Imagine (d) Improve
10. 10.True or false: to skip writing results is good testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
12. 12.True or false: an electrical engineer makes medicines in bulk. (a) False (b) True
13. 13.True or false: a lintel over a door uses a beam. (a) True (b) False
14. 14.🤝 In a design team, who puts the model together? (a) builder (b) materials manager (c) recorder (d) team leader
15. 15.True or false: “lift a cup of water” is a criterion (a goal). (a) True (b) False
16. 16.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 15 N, ice 3 N, a glass sheet 7 N, a carpet 11 N. Which surface gave the most friction? (a) sandpaper (b) a carpet (c) ice (d) a glass sheet
17. 17.🔺 One side of a straw bridge is a row of 15 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
18. 18.🪝 A load of 810 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
19. 19.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
20. 20.⚖️ Along a straight bar, measured from the left end, the effort is at 100 cm, the fulcrum at 20 cm and the load at 60 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
21. 21.True or false: a fishing rod is a class 1 lever (fulcrum in the middle). (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) fit on a school desk (b) roll at least 2 metres (c) lift a cup of water (d) hold up 500 g
23. 23.True or false: to follow the plan to build is the Create step. (a) False (b) True
24. 24.🌉 A beam bridge 210 m long rests on the two river banks and on piers in between, making equal spans of 30 m. How many piers are there?
25. 25.🏋️ Pushing a crate 3 m took 660 J of work. What force was used, in newtons?
26. 26.🔺 Which strong shape does an electric pylon use? (a) triangle (b) dome (c) beam (d) arch
27. 27.⚖️ A lever bar balances. The load is 360 N at 20 cm from the fulcrum. The effort is ? N at 40 cm from the fulcrum on the other side. What is the missing force in newtons?
28. 28.⚖️ A lever bar balances. The load is 120 N at ? cm from the fulcrum. The effort is 20 N at 60 cm from the fulcrum on the other side. What is the missing distance in centimetres?
29. 29.💪 Two children push a box to the right, one with 75 N and the other with 85 N. What is the net (total) force on the box, in newtons?
30. 30.🔧 Which tool would you use to smooth a rough edge? (a) a hand drill (b) a screwdriver (c) a protractor (d) sandpaper
31. 31.Which of these happens in the Improve step? (a) check it against goals (b) follow the plan to build (c) fix the weak part (d) brainstorm many ideas
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) measure the same way
33. 33.True or false: a broom when sweeping is a class 1 lever (fulcrum in the middle). (a) True (b) False
34. 34.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) who won the match? (b) what is for lunch? (c) how can we build it? (d) why is the sky blue?
35. 35.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) keeping a simple shape (c) building tall and narrow (d) using a heavy roof
36. 36.🤝 A team plans for 45 minutes, builds for 20 minutes and then tests for 10 minutes, one after another. How many minutes is that in all?
37. 37.Which of these uses triangles? (a) a shelf on two brackets (b) a bicycle frame (c) a round palace roof (d) a plank over a drain
38. 38.🌉 Which bridge type: “tall towers hold cables”? (a) arch bridge (b) beam bridge (c) suspension bridge
39. 39.🔍 Which is the odd one out? (a) float for 1 minute (b) be under 30 cm tall (c) stand in a fan breeze (d) keep ice for 1 hour
40. 40.🤝 In a design team, who runs the tests? (a) recorder (b) team leader (c) builder (d) tester

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