Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 381 · 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.🌉 In a stone arch bridge, the stones are in … (a) compression (b) no force (c) tension (d) friction
2. 2.🤝 Is it good or poor teamwork to share the work fairly? (a) poor teamwork (b) good teamwork
3. 3.♻️ Is coal a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
4. 4.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 6 N, a carpet 9 N, ice 3 N, a glass sheet 5 N. How many newtons more were needed on a carpet than on ice?
5. 5.♻️ A project report has 30 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
6. 6.💪 Two children push a box to the right, one with 40 N and the other with 90 N. What is the net (total) force on the box, in newtons?
7. 7.True or false: a grippy rubber sole gives more friction. (a) True (b) False
8. 8.True or false: “float for 1 minute” is a criterion (a goal). (a) True (b) False
9. 9.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
10. 10.True or false: a tug of war is a push. (a) True (b) False
11. 11.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) reuse (b) recycle (c) reduce
12. 12.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
13. 13.Which of these needs a waterproof material? (a) a hair band (b) a tea flask lining (c) the core of a wire (d) a roof sheet
14. 14.🔍 Which is the odd one out? (a) copper (b) plastic (c) steel (d) aluminium
15. 15.Which of these is made by engineers? (a) a cloud (b) a lift (c) a river (d) a waterfall
16. 16.True or false: to ask who will use it is the Ask step. (a) True (b) False
17. 17.♻️ A family used to throw away 3 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 4 weeks?
18. 18.⚙️ Which simple machine is a playground slide? (a) wheel and axle (b) screw (c) lever (d) inclined plane
19. 19.Which of these is in compression (pushed)? (a) a tent guy rope (b) a swing chain (c) a suspension cable (d) a tall bridge tower
20. 20.📐 A beam is 990 cm long. How long is it in metres? =
21. 21.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) computer (b) civil (c) aerospace (d) chemical
22. 22.🔍 Which is the odd one out? (a) a table leg (b) a pillar under a roof (c) a tall bridge tower (d) a tent guy rope
23. 23.True or false: a crowbar is a wheel and axle. (a) True (b) False
24. 24.True or false: a pair of tweezers is a class 3 lever (effort in the middle). (a) True (b) False
25. 25.🛠️ People need to cross a wide river. Which invention helps? (a) a water filter (b) a train (c) a solar panel (d) a bridge
26. 26.True or false: a smooth steel slide gives less friction. (a) True (b) False
27. 27.🏋️ A machine lifts a load of 260 N when you push with 130 N. What is its mechanical advantage (MA)?
28. 28.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 70 cm and the load at 60 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
29. 29.💪 A bag has a mass of 2 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
30. 30.🔄 Which design-process step is it to think of wild ideas? (a) Ask (b) Imagine (c) Create (d) Improve
31. 31.Which of these uses a dome? (a) a crane arm (b) a roof truss (c) an old stone bridge (d) a round palace roof
32. 32.🧑‍🔧 Which kind of engineer runs a fertiliser plant? (a) civil (b) aerospace (c) electrical (d) chemical
33. 33.📐 Why do engineers use scale drawings? (a) to make them pretty (b) to hide sizes (c) big things fit on paper (d) to save ink only
34. 34.⚖️ In a class 2 lever, what is in the middle? (a) the effort (b) the axle (c) the fulcrum (d) the load
35. 35.🏋️ A 13 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
36. 36.📋 Constraint: the tower must be no taller than 40 cm. The team’s tower is 36 cm tall. Is it within the constraint? (a) No (b) Yes
37. 37.True or false: “cables tied down at ends” is a suspension bridge. (a) True (b) False
38. 38.Which of these is caused by gravity? (a) a compass needle turns (b) rubbing hands warms them (c) an apple falls down (d) squeezing a lemon
39. 39.🏋️ Pushing a crate 1 m took 480 J of work. What force was used, in newtons?
40. 40.True or false: coal is a renewable energy source. (a) False (b) True

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