Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 498 · 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 is the odd one out? (a) copper (b) steel (c) graphite (d) plastic
2. 2.🔺 One side of a straw bridge is a row of 4 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
3. 3.♻️ Reduce, reuse or recycle: buy less packaging? (a) reuse (b) reduce (c) recycle
4. 4.🛞 Friction acts … (a) against the motion (b) with the motion (c) only on ice (d) only upwards
5. 5.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) using a light roof (c) raising heavy tanks high (d) building tall and narrow
6. 6.Which of these needs an electrical conductor? (a) a boat hull (b) a switch contact (c) a yoga mat (d) a spectacle lens
7. 7.🏋️ A longer ramp to the same height needs … (a) more effort (b) less effort (c) the same effort (d) no effort
8. 8.⚖️ Which class of lever is a lemon squeezer? (a) class 2 (b) class 1 (c) class 3
9. 9.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a constraint (b) a criterion
10. 10.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 0 cm and the load at 40 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
11. 11.True or false: to measure an angle, use a protractor. (a) True (b) False
12. 12.🛞 More or less friction: skating on ice? (a) more friction (b) less friction
13. 13.True or false: a movable pulley is on a flagpole top. (a) False (b) True
14. 14.🛞 More or less friction: chalk on a gym bar? (a) less friction (b) more friction
15. 15.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 6 N, a wooden plank 9 N, a carpet 13 N, ice 4 N. Which surface gave the most friction? (a) a wooden plank (b) a carpet (c) ice (d) a glass sheet
16. 16.🔍 Which is the odd one out? (a) roll at least 2 metres (b) float for 1 minute (c) carry 10 coins (d) be under 30 cm tall
17. 17.True or false: a chemical engineer designs a paint factory. (a) False (b) True
18. 18.What does the tester do? (a) collects the supplies (b) puts the model together (c) runs the tests (d) keeps the team on track
19. 19.True or false: “stones squeezed together” is an arch bridge. (a) True (b) False
20. 20.True or false: a roof sheet needs a flexible material. (a) True (b) False
21. 21.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using a heavy roof (c) adding steel to concrete (d) stacking loose bricks
22. 22.True or false: “stand in a fan breeze” is a criterion (a goal). (a) True (b) False
23. 23.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
25. 25.🌉 Which bridge type can cross the widest gap in one span? (a) beam bridge (b) arch bridge (c) suspension bridge (d) log bridge
26. 26.🔺 A flat frame has 4 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
27. 27.⚖️ On a seesaw, a heavier child should sit … (a) closer to the pivot (b) farther from the pivot (c) on the pivot (d) anywhere
28. 28.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 40 cm wide base, tower B is 40 cm tall on a 10 cm base and tower C is 80 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
29. 29.⚖️ What is the pivot point of a lever called? (a) the effort (b) the fulcrum (c) the load (d) the axle
30. 30.🧪 A paper bridge was tested three times. It held 390 g, 290 g and 250 g. What is the mean (average) load it held, in grams?
31. 31.🪢 Tension or compression: a bridge pier? (a) tension (b) compression
32. 32.🧑‍🔧 Which kind of engineer keeps data safe online? (a) chemical (b) computer (c) civil (d) mechanical
33. 33.🌉 A beam bridge 80 m long is split by piers into 2 equal spans. How long is each span, in metres?
34. 34.🛠️ People need to cross a wide river. Which invention helps? (a) a water filter (b) a fridge (c) a lift (d) a bridge
35. 35.🦺 In the workshop, is it safe to cut away from your body? (a) safe (b) not safe
36. 36.🔢 To follow the engineering design process, what comes right after “Ask”? (a) Imagine (b) Improve (c) Create (d) Test
37. 37.🌉 Which bridge type: “deck hangs from cables”? (a) beam bridge (b) arch bridge (c) suspension bridge
38. 38.True or false: a computer engineer designs school networks. (a) True (b) False
39. 39.Which of these uses a dome? (a) a truss bridge side (b) a bicycle frame (c) a shelf on two brackets (d) a planetarium roof
40. 40.True or false: to build the model is the Imagine step. (a) True (b) False

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