Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 26 · 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 school bench is made from 150 recycled plastic bottles. How many benches can be made from 1800 bottles?
2. 2.True or false: a plug pin needs a transparent material. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) an axe blade (b) a jar lid (c) a knife edge (d) the tip of a nail
4. 4.🪝 A bucket weighing 40 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
5. 5.🏋️ A longer ramp to the same height needs … (a) no effort (b) the same effort (c) more effort (d) less effort
6. 6.📐 On a plan, 1 cm stands for 5 m. A real bridge is 90 m long. How long is it on the plan, in centimetres?
7. 7.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
8. 8.📋 For a model bridge challenge, is “keep ice for 1 hour” a constraint or a criterion? (a) a criterion (b) a constraint
9. 9.True or false: to change lots at once is poor testing. (a) False (b) True
10. 10.True or false: a wheelbarrow is a class 1 lever (fulcrum in the middle). (a) True (b) False
11. 11.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a criterion (b) a constraint
12. 12.True or false: a bicycle frame uses a dome. (a) False (b) True
13. 13.📋 Criterion: the model bridge must hold at least 300 g. In the test it held 450 g. Does it meet the criterion? (a) No (b) Yes
14. 14.🔺 Which strong shape does a crane arm use? (a) arch (b) triangle (c) dome (d) beam
15. 15.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 10 cm long in the drawing. How long is the real car, in centimetres?
16. 16.📋 Criteria are … (a) goals a design must meet (b) the tools you use (c) the team names (d) the limits on money
17. 17.True or false: “carry 10 coins” is a criterion (a goal). (a) True (b) False
18. 18.⚙️ Which simple machine is a playground slide? (a) wedge (b) wheel and axle (c) inclined plane (d) pulley
19. 19.🔍 Which is the odd one out? (a) roll at least 2 metres (b) finish in 40 minutes (c) spend at most ₹100 (d) fit on a school desk
20. 20.♻️ Reduce, reuse or recycle: refill a water bottle? (a) reduce (b) reuse (c) recycle
21. 21.True or false: “keep ice for 1 hour” is a constraint (a limit). (a) True (b) False
22. 22.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) joule (J) (d) newton (N)
23. 23.⚖️ Which class of lever is a crowbar? (a) class 3 (b) class 1 (c) class 2
24. 24.Which of these needs a heat insulator? (a) an oven glove (b) a boat hull (c) a plug pin (d) a magnifier lens
25. 25.📐 How many metres are in 1 kilometre? (a) 1000 (b) 10 (c) 10000 (d) 100
26. 26.True or false: “a rope bridge in hills” is a beam bridge. (a) False (b) True
27. 27.🔺 Which strong shape does a planetarium roof use? (a) arch (b) triangle (c) dome (d) beam
28. 28.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a criterion (b) a constraint
29. 29.🛠️ What does an engineer mainly do? (a) designs useful solutions (b) only paints pictures (c) grows crops (d) sells tickets
30. 30.Which of these is a lever? (a) a water tap handle (b) a well-bucket rope wheel (c) a seesaw (d) a jar lid
31. 31.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
32. 32.🧑‍🔧 Which kind of engineer builds rockets? (a) civil (b) chemical (c) electrical (d) aerospace
33. 33.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
34. 34.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
35. 35.🦺 Who should use hot glue guns and power tools in a kids’ project? (a) any child alone (b) the youngest child (c) a stranger (d) an adult
36. 36.🪝 A bucket weighing 190 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
37. 37.Which of these is in compression (pushed)? (a) a crane lifting cable (b) a tent guy rope (c) a tug of war rope (d) a stone in an arch
38. 38.🔧 Which tool would you use to cut a wooden plank? (a) a saw (b) pliers (c) a spirit level (d) a hammer
39. 39.Which of these is reuse (use again)? (a) print on both sides (b) reuse gift paper (c) carry a cloth bag (d) switch off unused lights
40. 40.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 20 cm and the load at 40 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3

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