Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 995 · 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.📐 Why do engineers use scale drawings? (a) to save ink only (b) big things fit on paper (c) to make them pretty (d) to hide sizes
2. 2.⚙️ Which simple machine is a bottle cap? (a) lever (b) screw (c) wedge (d) pulley
3. 3.🪝 A well winch has a handle (wheel) of radius 21 cm turning an axle of radius 3 cm. What is its mechanical advantage (MA)?
4. 4.📐 On a plan, 1 cm stands for 20 m. A real bridge is 180 m long. How long is it on the plan, in centimetres?
5. 5.True or false: a fishing rod is a class 3 lever (effort in the middle). (a) False (b) True
6. 6.📐 On a plan, 1 cm stands for 20 m. A wall is 12 cm long on the plan. How long is the real wall, in metres?
7. 7.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 10 N, ice 4 N, a glass sheet 7 N, a wooden plank 8 N. Which surface gave the most friction? (a) a wooden plank (b) sandpaper (c) ice (d) a glass sheet
8. 8.🌉 Which bridge type: “pushes out on its ends”? (a) arch bridge (b) suspension bridge (c) beam bridge
9. 9.Which of these is a beam bridge? (a) a curve under the deck (b) a log across a stream (c) cables tied down at ends (d) tall towers hold cables
10. 10.⚖️ Going along a lever from one end to the other, the order is: fulcrum, load, effort. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
11. 11.📐 On a plan, 1 cm stands for 5 m. A wall is 7 cm long on the plan. How long is the real wall, in metres?
12. 12.🪝 Fixed or movable pulley: which one only changes direction? (a) a movable pulley (b) a fixed pulley
13. 13.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 250 N box up it, in newtons? (ideal ramp, no friction)
14. 14.Which of these is reduce (use less)? (a) give old books away (b) pulp old paper (c) buy less packaging (d) refill a water bottle
15. 15.🔍 Which is the odd one out? (a) a coral reef (b) a banyan tree (c) a lift (d) a seashell
16. 16.⚖️ Along a straight bar, measured from the left end, the effort is at 10 cm, the fulcrum at 70 cm and the load at 50 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
18. 18.🔺 How do engineers stop a square frame from wobbling? (a) take off a side (b) make it bigger (c) paint it (d) add a diagonal brace
19. 19.True or false: to listen to every idea is good teamwork. (a) True (b) False
20. 20.🪢 A concrete slab weighing 11500 N rests evenly on 5 identical pillars. What compression force does each pillar carry, in newtons?
21. 21.🏋️ A force of 390 N did 390 J of work. How many metres did the object move?
22. 22.🤝 Is it good or poor teamwork to listen to every idea? (a) poor teamwork (b) good teamwork
23. 23.🪝 A well winch has a handle (wheel) of radius 5 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
24. 24.True or false: an electrical engineer designs electric motors. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) record every result (d) test it only once
26. 26.True or false: to skip writing results is good testing. (a) False (b) True
27. 27.♻️ Which is the BEST order to think about waste? (a) burn, bury, forget (b) reuse, recycle, reduce (c) reduce, reuse, recycle (d) recycle, reuse, reduce
28. 28.📐 A beam is 510 cm long. How long is it in metres? =
29. 29.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 5 N, a carpet 8 N, sandpaper 11 N, a glass sheet 2 N. Which surface gave the most friction? (a) a carpet (b) a wooden plank (c) sandpaper (d) a glass sheet
30. 30.⚖️ A lever bar balances. The load is 210 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?
31. 31.📐 On a plan, 1 cm stands for 5 m. A wall is 18 cm long on the plan. How long is the real wall, in metres?
32. 32.True or false: a tunnel helps people store water for summer. (a) False (b) True
33. 33.True or false: a mountain is found in nature. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) clamp wood before sawing (b) cut towards your hand (c) touch a hot glue tip (d) leave tools on the floor
35. 35.Which job is a hammer for? (a) drive in a nail (b) cut a wooden plank (c) tighten a nut (d) check a shelf is level
36. 36.📋 Constraint: the tower must be no taller than 80 cm. The team’s tower is 86 cm tall. Is it within the constraint? (a) No (b) Yes
37. 37.Which need does a telephone meet? (a) go through a mountain (b) make water safe to drink (c) make power from sunlight (d) talk to someone far away
38. 38.🔧 Which tool would you use to grip and bend wire? (a) a hand drill (b) pliers (c) a saw (d) a hammer
39. 39.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
40. 40.♻️ Reduce, reuse or recycle: switch off unused lights? (a) reuse (b) reduce (c) recycle

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