Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 326 · 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 of these uses a dome? (a) an old stone bridge (b) a roof truss (c) a bicycle frame (d) an igloo
2. 2.True or false: a swing chain is in tension (pulled). (a) False (b) True
3. 3.🪝 More rope sections holding a load means … (a) the load floats (b) no change (c) more effort needed (d) less effort needed
4. 4.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) far from the fulcrum (b) on the fulcrum (c) on the rock (d) near the fulcrum
5. 5.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
6. 6.🏋️ An 11 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
7. 7.📋 A design meets every criterion but costs more than the budget. Is it acceptable? (a) only if it is red (b) no, it breaks a limit (c) yes, always (d) yes, it works
8. 8.🤝 A team of 3 shares 15 equal jobs fairly. Each job takes 6 minutes. How many minutes does each person work?
9. 9.🪢 Tension or compression: a tent guy rope? (a) tension (b) compression
10. 10.🪢 A concrete slab weighing 5000 N rests evenly on 2 identical pillars. What compression force does each pillar carry, in newtons?
11. 11.📋 For a model bridge challenge, is “hold up 500 g” a constraint or a criterion? (a) a constraint (b) a criterion
12. 12.⚖️ A lever bar balances. The load is 900 N at ? cm from the fulcrum. The effort is 100 N at 90 cm from the fulcrum on the other side. What is the missing distance in centimetres?
13. 13.🔍 Which is the odd one out? (a) a seashell (b) a cloud (c) a coral reef (d) a lift
14. 14.🪝 What does a single fixed pulley change? (a) gravity (b) the size of the load (c) the colour of rope (d) the direction of pull
15. 15.⚖️ Turning effect = force × … (a) time taken (b) distance from fulcrum (c) colour of bar (d) mass of fulcrum
16. 16.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
17. 17.🔍 Which is the odd one out? (a) wear safety goggles (b) touch a hot glue tip (c) cut away from your body (d) carry scissors closed
18. 18.Which job is a spanner for? (a) measure an angle (b) tighten a nut (c) smooth a rough edge (d) turn a screw
19. 19.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
20. 20.What does the tester do? (a) tracks what is used up (b) collects the supplies (c) runs the tests (d) cuts and joins parts
21. 21.True or false: a fixed pulley stays in one place. (a) True (b) False
22. 22.🪢 A concrete slab weighing 16200 N rests evenly on 6 identical pillars. What compression force does each pillar carry, in newtons?
23. 23.🔢 To follow the engineering design process, which comes first: “Ask” or “Improve”? (a) Improve (b) Ask
24. 24.🧑‍🔧 Which kind of engineer designs aeroplane wings? (a) civil (b) aerospace (c) electrical (d) mechanical
25. 25.🤝 In a design team, who cuts and joins parts? (a) tester (b) materials manager (c) recorder (d) builder
26. 26.⚖️ Along a straight bar, measured from the left end, the effort is at 90 cm, the fulcrum at 50 cm and the load at 10 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
27. 27.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 13 N, a glass sheet 4 N, a wooden plank 6 N, a carpet 9 N. Which surface gave the most friction? (a) a glass sheet (b) sandpaper (c) a wooden plank (d) a carpet
28. 28.🛠️ Is a water filter made by engineers or found in nature? (a) made by engineers (b) found in nature
29. 29.⚖️ In a class 1 lever, what is in the middle? (a) nothing (b) the load (c) the effort (d) the fulcrum
30. 30.🧪 A paper bridge was tested three times. It held 250 g, 220 g and 250 g. What is the mean (average) load it held, in grams?
31. 31.🧱 Which property matters most for a plug pin? (a) heat insulator (b) flexible (c) transparent (d) electrical conductor
32. 32.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
33. 33.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 4 cm long in the drawing. How long is the real car, in centimetres?
34. 34.Which of these is in compression (pushed)? (a) a stretched rubber band (b) a table leg (c) a suspension cable (d) a crane lifting cable
35. 35.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a movable pulley (b) a fixed pulley
36. 36.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load × effort (d) load ÷ effort
37. 37.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
38. 38.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 30 cm and the load at 0 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
39. 39.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 11 N, ice 3 N, a glass sheet 4 N, a carpet 8 N. Which surface gave the most friction? (a) a carpet (b) sandpaper (c) a glass sheet (d) ice
40. 40.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) hanging outside (c) low down (d) on the very top

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