Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 908 · 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.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
2. 2.⚖️ A seesaw balances. Asha (190 N) sits 1 m from the pivot on one side; Zoya (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
3. 3.True or false: a bottle opener is a class 3 lever (effort in the middle). (a) True (b) False
4. 4.🏋️ A 15 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
5. 5.♻️ Reduce, reuse or recycle: turn plastic into tiles? (a) reduce (b) reuse (c) recycle
6. 6.🛞 More or less friction: a grippy rubber sole? (a) more friction (b) less friction
7. 7.⚖️ A lever bar balances. The load is ? N at 10 cm from the fulcrum. The effort is 10 N at 60 cm from the fulcrum on the other side. What is the missing force in newtons?
8. 8.🏋️ A 2 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
9. 9.🔺 A frame shaped like a square is made of straws joined by loose pins, with 1 corner-to-corner brace. Is it rigid or wobbly? (a) wobbly (b) rigid
10. 10.🔢 To follow the engineering design process, what comes right after “Test”? (a) Ask (b) Imagine (c) Create (d) Improve
11. 11.🔍 Which is the odd one out? (a) graphite (b) steel (c) dry wood (d) iron
12. 12.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) making brittle joints (c) having a wide base (d) using a heavy roof
13. 13.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
14. 14.True or false: a chemical engineer refines crude oil. (a) False (b) True
15. 15.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
16. 16.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
17. 17.True or false: a rainbow is found in nature. (a) False (b) True
18. 18.🏋️ Pushing a crate 1 m took 300 J of work. What force was used, in newtons?
19. 19.True or false: a tunnel helps people cross a wide river. (a) True (b) False
20. 20.📋 Criterion: the model bridge must hold at least 500 g. In the test it held 600 g. Does it meet the criterion? (a) Yes (b) No
21. 21.🔍 Which is the odd one out? (a) a rainbow (b) a dam (c) a coral reef (d) a mountain
22. 22.🔍 Which is the odd one out? (a) a window blind cord (b) a flagpole rope wheel (c) a crane hook block (d) a water tap handle
23. 23.Which of these is caused by friction? (a) an apple falls down (b) a rolling ball slows (c) pedalling a cycle (d) lifting a school bag
24. 24.🧱 Which material is best for the core of an electric wire? (a) rubber (b) wood (c) copper (d) glass
25. 25.🤝 Is it good or poor teamwork to own up to a mistake? (a) poor teamwork (b) good teamwork
26. 26.🔢 To follow the engineering design process, what comes right after “Imagine”? (a) Test (b) Plan (c) Ask (d) Improve
27. 27.🪝 A bucket weighing 470 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
28. 28.♻️ Is ocean wave energy a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
29. 29.🔍 Which is the odd one out? (a) a tyre with deep treads (b) a rough doormat (c) a wheel on ball bearings (d) a box pushed on carpet
30. 30.⚖️ A seesaw balances. Meena (560 N) sits ? m from the pivot on one side; Kabir (140 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
31. 31.🤝 In a design team, who cuts and joins parts? (a) team leader (b) tester (c) builder (d) materials manager
32. 32.Which need does a water filter meet? (a) keep food fresh longer (b) store water for summer (c) make water safe to drink (d) carry many people far
33. 33.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 8 N, a glass sheet 3 N, a wooden plank 6 N, a carpet 7 N. Which surface gave the least friction? (a) a wooden plank (b) a carpet (c) sandpaper (d) a glass sheet
34. 34.🤝 Is it good or poor teamwork to give kind feedback? (a) good teamwork (b) poor teamwork
35. 35.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 2 m, how many metres of rope must you pull?
36. 36.True or false: “roll at least 2 metres” is a constraint (a limit). (a) True (b) False
37. 37.What does the tester do? (a) checks the goals are met (b) writes down results (c) tracks what is used up (d) keeps the design notes
38. 38.🌉 Which bridge type: “the simplest bridge”? (a) suspension bridge (b) beam bridge (c) arch bridge
39. 39.🏚️ Three solid model towers are made of the same material. Tower A is 90 cm tall on a 30 cm wide base, tower B is 20 cm tall on a 10 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
40. 40.🔍 Which is the odd one out? (a) having a wide base (b) stacking loose bricks (c) adding cross bracing (d) using flexible joints

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