Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 668 · 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) guess, do not measure (b) measure the same way (c) change only one thing (d) record every result
2. 2.🏚️ Three solid model towers are made of the same material. Tower A is 100 cm tall on a 20 cm wide base, tower B is 20 cm tall on a 10 cm base and tower C is 60 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
3. 3.Which of these is a beam bridge? (a) good for short gaps (b) a curve under the deck (c) tall towers hold cables (d) a rope bridge in hills
4. 4.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a microscope (c) a telescope (d) a shake table
5. 5.True or false: a box pushed on carpet gives more friction. (a) True (b) False
6. 6.📋 Criterion: the model bridge must hold at least 400 g. In the test it held 350 g. Does it meet the criterion? (a) No (b) Yes
7. 7.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
8. 8.📐 A model car is drawn so that 1 cm stands for 40 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
9. 9.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
10. 10.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 180 N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
11. 11.⚖️ A seesaw balances. Zoya (480 N) sits ? m from the pivot on one side; Kabir (640 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
12. 12.⚖️ A seesaw balances. Kabir (300 N) sits 4 m from the pivot on one side; Ravi (600 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
13. 13.True or false: a computer engineer designs bicycle gears. (a) True (b) False
14. 14.🌉 In a stone arch bridge, the stones are in … (a) friction (b) tension (c) no force (d) compression
15. 15.True or false: a chemical engineer refines crude oil. (a) True (b) False
16. 16.🔄 Which design-process step is it to follow the plan to build? (a) Imagine (b) Ask (c) Create (d) Plan
17. 17.🧑‍🔧 Which branch of engineering designs buildings, roads and bridges? (a) civil (b) computer (c) chemical (d) biomedical
18. 18.📐 A beam is 160 cm long. How long is it in metres? =
19. 19.True or false: to dream up possible fixes is the Imagine step. (a) False (b) True
20. 20.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 10 N, a glass sheet 1 N, a wooden plank 3 N, a carpet 6 N. Which surface gave the most friction? (a) sandpaper (b) a glass sheet (c) a carpet (d) a wooden plank
21. 21.🔺 Which shape keeps its shape best when its corners are pinned? (a) hexagon (b) rectangle (c) triangle (d) square
22. 22.📋 For a model bridge challenge, is “use at most 20 straws” a constraint or a criterion? (a) a criterion (b) a constraint
23. 23.⚙️ Which simple machine is a playground slide? (a) screw (b) pulley (c) wedge (d) inclined plane
24. 24.♻️ A school bench is made from 200 recycled plastic bottles. How many benches can be made from 400 bottles?
25. 25.🪢 Tension or compression: a tug of war rope? (a) compression (b) tension
26. 26.🪝 Fixed or movable pulley: which one halves the effort? (a) a movable pulley (b) a fixed pulley
27. 27.Which of these is reuse (use again)? (a) switch off unused lights (b) pulp old paper (c) refill a water bottle (d) fix a dripping tap
28. 28.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 8 N, sandpaper 11 N, ice 3 N, a wooden plank 7 N. Which surface gave the most friction? (a) ice (b) a carpet (c) sandpaper (d) a wooden plank
29. 29.🔺 Which strong shape does a bicycle frame use? (a) arch (b) triangle (c) beam (d) dome
30. 30.🛞 Why are tyres made with deep treads? (a) to grip the road (b) to go slower (c) to look nice (d) to save rubber
31. 31.Which of these is in tension (pulled)? (a) a temple column (b) a tent guy rope (c) a table leg (d) a pillar under a roof
32. 32.🧑‍🔧 Which kind of engineer makes medicines in bulk? (a) aerospace (b) chemical (c) biomedical (d) computer
33. 33.🏋️ A longer ramp to the same height needs … (a) the same effort (b) no effort (c) less effort (d) more effort
34. 34.🏋️ Pushing a crate 6 m took 1140 J of work. What force was used, in newtons?
35. 35.📋 A constraint is … (a) a final test (b) a kind of glue (c) a goal for success (d) a limit you must keep to
36. 36.Which of these is caused by gravity? (a) a magnet picks up pins (b) a fridge magnet sticks (c) a thrown ball comes down (d) squeezing a lemon
37. 37.True or false: biogas from waste is a non-renewable energy source. (a) False (b) True
38. 38.True or false: wind is a non-renewable energy source. (a) False (b) True
39. 39.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 40 cm and the load at 80 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
40. 40.Which of these makes a building less safe in earthquakes? (a) using a heavy roof (b) using flexible joints (c) adding steel to concrete (d) keeping a simple shape

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