Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 781 · 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.True or false: a bottle opener is a class 2 lever (load in the middle). (a) False (b) True
2. 2.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) computer (b) civil (c) biomedical (d) chemical
3. 3.True or false: to measure its performance is the Imagine step. (a) False (b) True
4. 4.📋 A constraint is … (a) a goal for success (b) a limit you must keep to (c) a kind of glue (d) a final test
5. 5.🌉 A beam bridge 90 m long is split by piers into 6 equal spans. How long is each span, in metres?
6. 6.True or false: to brainstorm many ideas is the Imagine step. (a) False (b) True
7. 7.🌉 A beam bridge 300 m long rests on the two river banks and on piers in between, making equal spans of 30 m. How many piers are there?
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
9. 9.True or false: a beam balance is a class 1 lever (fulcrum in the middle). (a) False (b) True
10. 10.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 500 g. Does it meet the criterion? (a) No (b) Yes
11. 11.True or false: a car seat belt needs a flexible material. (a) True (b) False
12. 12.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) not affected (b) squeezed (compression) (c) stretched (tension) (d) twisted
13. 13.Which of these is reuse (use again)? (a) turn plastic into tiles (b) switch off unused lights (c) carry a cloth bag (d) reuse gift paper
14. 14.🔺 A frame shaped like a pentagon is made of straws joined by loose pins, with 2 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
15. 15.🌉 A beam bridge 40 m long is split by piers into 2 equal spans. How long is each span, in metres?
16. 16.Which job is a saw for? (a) cut a wooden plank (b) drive in a nail (c) turn a screw (d) check a shelf is level
17. 17.⚖️ A lever bar balances. The load is 60 N at 40 cm from the fulcrum. The effort is ? N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
18. 18.What does the recorder do? (a) writes down results (b) shares out the jobs (c) runs the tests (d) tracks what is used up
19. 19.📋 Constraint: the tower must be no taller than 60 cm. The team’s tower is 54 cm tall. Is it within the constraint? (a) No (b) Yes
20. 20.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load ÷ effort (c) load × effort (d) load + effort
21. 21.⚖️ A lever balances when … (a) both weights are equal (b) the bar is short (c) the fulcrum moves (d) turning effects match
22. 22.🔺 Which shape keeps its shape best when its corners are pinned? (a) rectangle (b) hexagon (c) square (d) triangle
23. 23.True or false: to dream up possible fixes is the Imagine step. (a) True (b) False
24. 24.True or false: a computer engineer keeps data safe online. (a) True (b) False
25. 25.🪢 Tension or compression: a stone in an arch? (a) compression (b) tension
26. 26.📋 Criteria are … (a) the limits on money (b) the team names (c) goals a design must meet (d) the tools you use
27. 27.⚙️ Which simple machine is a crowbar? (a) lever (b) screw (c) wedge (d) pulley
28. 28.📐 On a plan, 1 cm stands for 10 m. A wall is 15 cm long on the plan. How long is the real wall, in metres?
29. 29.True or false: a pair of scissors is a class 1 lever (fulcrum in the middle). (a) True (b) False
30. 30.⚖️ Which class of lever is your forearm? (a) class 3 (b) class 2 (c) class 1
31. 31.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
32. 32.🏚️ Three solid model towers are made of the same material. Tower A is 140 cm tall on a 20 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 50 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
33. 33.⚖️ A seesaw balances. Arjun (360 N) sits ? m from the pivot on one side; Ravi (360 N) sits 2 m from the pivot on the other side. What is the missing distance in metres?
34. 34.True or false: a bicycle is found in nature. (a) True (b) False
35. 35.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
36. 36.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
37. 37.🤝 Why do engineers work in teams? (a) many skills and ideas (b) to finish nothing (c) to work alone (d) to argue more
38. 38.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
39. 39.🏋️ A machine lifts a load of 140 N when you push with 70 N. What is its mechanical advantage (MA)?
40. 40.🔺 A flat frame has 11 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?

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