Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 915 · 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.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load + effort (c) load ÷ effort (d) effort ÷ load
2. 2.🤝 In a design team, who keeps the design notes? (a) builder (b) recorder (c) team leader (d) tester
3. 3.True or false: a movable pulley is on a flagpole top. (a) False (b) True
4. 4.🔺 Which strong shape does a truss bridge side use? (a) arch (b) dome (c) triangle (d) beam
5. 5.🏋️ A force of 60 N pushes a cart 7 m along the floor. How much work is done, in joules?
6. 6.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 4 m, how many metres of rope must you pull?
7. 7.🦺 In the workshop, is it safe to carry scissors closed? (a) safe (b) not safe
8. 8.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
9. 9.🪢 A stage stands on 4 identical legs and each leg is squeezed with 925 N. What is the total load on the stage, in newtons?
10. 10.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
11. 11.📋 Criterion: the model bridge must hold at least 400 g. In the test it held 400 g. Does it meet the criterion? (a) No (b) Yes
12. 12.True or false: using a light roof makes a building safer in earthquakes. (a) True (b) False
13. 13.🪝 A load of 280 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
14. 14.Which of these is in compression (pushed)? (a) a swing chain (b) a tall bridge tower (c) a tent guy rope (d) a crane lifting cable
15. 15.True or false: to build the model is the Create step. (a) False (b) True
16. 16.🔺 A flat frame has 7 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
17. 17.🧱 Which material is best for a cooking pot handle? (a) copper (b) aluminium (c) iron (d) wood or plastic
18. 18.⚖️ Along a straight bar, measured from the left end, the effort is at 0 cm, the fulcrum at 30 cm and the load at 60 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
19. 19.Which of these happens in the Plan step? (a) follow the plan to build (b) make it better, retest (c) define the problem (d) pick the build order
20. 20.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 8 N, a carpet 10 N, ice 3 N, a glass sheet 4 N. Which surface gave the most friction? (a) a wooden plank (b) ice (c) a glass sheet (d) a carpet
21. 21.Which of these is caused by friction? (a) a compass needle turns (b) a magnet picks up pins (c) pedalling a cycle (d) rubbing hands warms them
22. 22.📐 On a plan, 1 cm stands for 5 m. A wall is 10 cm long on the plan. How long is the real wall, in metres?
23. 23.♻️ Which energy source will never run out? (a) coal (b) diesel (c) petrol (d) sunlight
24. 24.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
25. 25.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) civil (b) biomedical (c) aerospace (d) electrical
26. 26.True or false: “fit on a school desk” is a criterion (a goal). (a) True (b) False
27. 27.True or false: to smooth a rough edge, use sandpaper. (a) False (b) True
28. 28.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
29. 29.Which of these is a pulley? (a) an axe blade (b) the tip of a nail (c) a round doorknob (d) a flagpole rope wheel
30. 30.⚖️ In a class 1 lever, what is in the middle? (a) nothing (b) the fulcrum (c) the effort (d) the load
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
32. 32.🤝 In a design team, who checks the goals are met? (a) tester (b) recorder (c) builder (d) materials manager
33. 33.Which of these is reuse (use again)? (a) pulp old paper (b) buy less packaging (c) give old books away (d) switch off unused lights
34. 34.True or false: sunlight is a renewable energy source. (a) False (b) True
35. 35.🪝 Fixed or movable pulley: which one stays in one place? (a) a movable pulley (b) a fixed pulley
36. 36.⚖️ A lever bar balances. The load is 180 N at 20 cm from the fulcrum. The effort is ? N at 30 cm from the fulcrum on the other side. What is the missing force in newtons?
37. 37.True or false: to touch a hot glue tip is safe. (a) True (b) False
38. 38.🏋️ Pushing a crate 9 m took 3420 J of work. What force was used, in newtons?
39. 39.🔍 Which is the odd one out? (a) a dam (b) a ceiling fan (c) a coral reef (d) a bridge
40. 40.Which of these happens in the Create step? (a) define the problem (b) dream up possible fixes (c) try it out (d) build the model

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