Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 297 · 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.🏋️ Pushing a crate 8 m took 2640 J of work. What force was used, in newtons?
2. 2.⚖️ A lever bar balances. The load is 100 N at 10 cm from the fulcrum. The effort is ? N at 50 cm from the fulcrum on the other side. What is the missing force in newtons?
3. 3.💪 In a tug of war, one team pulls left with 90 N and the other pulls right with 85 N. What is the size of the net force, in newtons?
4. 4.True or false: a seesaw is a lever. (a) False (b) True
5. 5.True or false: to let adults use hot glue is safe. (a) False (b) True
6. 6.📐 On a plan, 1 cm stands for 20 m. A wall is 6 cm long on the plan. How long is the real wall, in metres?
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design B (b) design C (c) design A
8. 8.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
9. 9.🔍 Which is the odd one out? (a) cotton cloth (b) dry wood (c) rubber (d) copper
10. 10.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
11. 11.💪 A force is a … (a) unit of time (b) type of sound (c) kind of colour (d) push or a pull
12. 12.💪 In which unit do we measure force? (a) newton (N) (b) metre (m) (c) litre (L) (d) second (s)
13. 13.🔢 To follow the engineering design process, what comes right after “Ask”? (a) Plan (b) Improve (c) Imagine (d) Test
14. 14.🤝 A team plans for 15 minutes, builds for 10 minutes and then tests for 30 minutes, one after another. How many minutes is that in all?
15. 15.🏋️ A 13 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
16. 16.Which of these is reuse (use again)? (a) buy less packaging (b) reuse gift paper (c) switch off unused lights (d) fix a dripping tap
17. 17.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) leaving out steel bars (c) using a light roof (d) making brittle joints
18. 18.🤝 Why do engineers work in teams? (a) to argue more (b) to finish nothing (c) many skills and ideas (d) to work alone
19. 19.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
20. 20.True or false: “tall towers hold cables” is a suspension bridge. (a) True (b) False
21. 21.True or false: a stretched rubber band is in tension (pulled). (a) False (b) True
22. 22.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 70 cm and the load at 20 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
23. 23.Which of these is a wedge? (a) a well winch handle (b) a jar lid (c) an axe blade (d) a crowbar
24. 24.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 2 N, a wooden plank 6 N, a carpet 7 N, sandpaper 9 N. Which surface gave the least friction? (a) a wooden plank (b) a glass sheet (c) sandpaper (d) a carpet
25. 25.🔍 Which is the odd one out? (a) sand on a slippery path (b) oil on a squeaky hinge (c) a box pushed on carpet (d) a grippy rubber sole
26. 26.🏋️ A force of 300 N pushes a cart 8 m along the floor. How much work is done, in joules?
27. 27.True or false: a steering wheel is a pulley. (a) True (b) False
28. 28.True or false: a skipping rope needs a transparent material. (a) True (b) False
29. 29.📋 Criterion: the model bridge must hold at least 1000 g. In the test it held 1150 g. Does it meet the criterion? (a) No (b) Yes
30. 30.📐 On a plan, 1 cm stands for 2 m. A wall is 15 cm long on the plan. How long is the real wall, in metres?
31. 31.🔍 Which is the odd one out? (a) keeping a simple shape (b) using a light roof (c) making brittle joints (d) using flexible joints
32. 32.Which of these is reuse (use again)? (a) refill a water bottle (b) melt cans into new cans (c) switch off unused lights (d) carry a cloth bag
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C
34. 34.🪝 A winch has a wheel of radius 32 cm and an axle of radius 4 cm. What effort on the wheel lifts a 1280 N bucket on the axle, in newtons? (ideal)
35. 35.Which of these is caused by magnetic force? (a) a rolling ball slows (b) a compass needle turns (c) lifting a school bag (d) rain falls to the ground
36. 36.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) on the rock (b) near the fulcrum (c) on the fulcrum (d) far from the fulcrum
37. 37.True or false: pressing a doorbell is a pull. (a) True (b) False
38. 38.📋 Criteria are … (a) the team names (b) the tools you use (c) goals a design must meet (d) the limits on money
39. 39.True or false: to use the same load is poor testing. (a) True (b) False
40. 40.True or false: pushing a trolley is a push. (a) True (b) False

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