Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 112 · 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.True or false: coal is a non-renewable energy source. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) brass (b) graphite (c) copper (d) dry wood
3. 3.True or false: oil on a squeaky hinge gives more friction. (a) True (b) False
4. 4.🔺 One side of a straw bridge is a row of 4 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
5. 5.Which need does a bridge meet? (a) make water safe to drink (b) talk to someone far away (c) see very tiny things (d) cross a wide river
6. 6.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) record every result (d) change lots at once
7. 7.📋 Criterion: the model bridge must hold at least 400 g. In the test it held 450 g. Does it meet the criterion? (a) No (b) Yes
8. 8.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 2 N, a wooden plank 6 N, a carpet 8 N, sandpaper 11 N. How many newtons more were needed on sandpaper than on ice?
9. 9.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a movable pulley (b) a fixed pulley
10. 10.True or false: a fixed pulley only changes direction. (a) False (b) True
11. 11.💪 In a tug of war, one team pulls right with 20 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
12. 12.Which of these happens in the Improve step? (a) define the problem (b) make it better, retest (c) draw a labelled diagram (d) ask who will use it
13. 13.True or false: a movable pulley is on a flagpole top. (a) True (b) False
14. 14.⚖️ Which class of lever is a crowbar? (a) class 3 (b) class 1 (c) class 2
15. 15.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 3 N, a wooden plank 4 N, a carpet 7 N, sandpaper 8 N. How many newtons more were needed on sandpaper than on a glass sheet?
16. 16.🔢 To follow the engineering design process, what comes right after “Plan”? (a) Imagine (b) Test (c) Create (d) Improve
17. 17.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) low down (c) hanging outside (d) on a thin pole
18. 18.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a criterion (b) a constraint
19. 19.💪 In a tug of war, one team pulls right with 25 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
20. 20.🌉 What holds up a long beam bridge in the middle? (a) piers (b) balloons (c) nothing (d) cables only
21. 21.🔍 Which is the odd one out? (a) a nut and bolt (b) a bottle opener (c) a bottle cap (d) a wood screw
22. 22.True or false: a raincoat needs a waterproof material. (a) False (b) True
23. 23.⚖️ On a seesaw, a heavier child should sit … (a) on the pivot (b) farther from the pivot (c) anywhere (d) closer to the pivot
24. 24.🛠️ Is a waterfall made by engineers or found in nature? (a) found in nature (b) made by engineers
25. 25.🔄 Which design-process step is it to find the limits? (a) Create (b) Plan (c) Imagine (d) Ask
26. 26.🌉 In a suspension bridge, the main cables are in … (a) no force (b) tension (c) compression (d) friction
27. 27.♻️ Which energy source will never run out? (a) sunlight (b) petrol (c) diesel (d) coal
28. 28.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 340 g. What is the mean (average) load it held, in grams?
29. 29.🔺 One side of a straw bridge is a row of 12 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
30. 30.🌉 Which bridge type: “cables tied down at ends”? (a) arch bridge (b) suspension bridge (c) beam bridge
31. 31.🛠️ What does an engineer mainly do? (a) grows crops (b) only paints pictures (c) designs useful solutions (d) sells tickets
32. 32.Which of these happens in the Plan step? (a) make a prototype (b) check it against goals (c) pick the build order (d) think of wild ideas
33. 33.🔺 A flat frame has 10 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
34. 34.🏋️ A force of 450 N pushes a cart 6 m along the floor. How much work is done, in joules?
35. 35.True or false: a water filter helps people reach a top floor fast. (a) True (b) False
36. 36.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
37. 37.What does the team leader do? (a) runs the tests (b) puts the model together (c) shares out the jobs (d) tracks what is used up
38. 38.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) how can we build it? (b) who won the match? (c) what is for lunch? (d) why is the sky blue?
39. 39.🛞 More or less friction: a smooth steel slide? (a) less friction (b) more friction
40. 40.🤝 A teammate’s idea seems odd. What should you do first? (a) laugh at it (b) walk away (c) listen and ask why (d) ignore it

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