Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 32 · 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.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 14 N, ice 2 N, a glass sheet 6 N, a wooden plank 10 N. Which surface gave the most friction? (a) sandpaper (b) a glass sheet (c) a wooden plank (d) ice
2. 2.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 0 cm and the load at 60 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
3. 3.🌉 In a suspension bridge, the main cables are in … (a) tension (b) no force (c) friction (d) compression
4. 4.🪢 A sign weighing 340 N hangs from 2 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
5. 5.📐 On a plan, 1 cm stands for 20 m. A wall is 9 cm long on the plan. How long is the real wall, in metres?
6. 6.🛠️ Is a lift made by engineers or found in nature? (a) found in nature (b) made by engineers
7. 7.🌉 A beam bridge is 350 m long. Piers split it into equal spans of 35 m. How many spans are there?
8. 8.🧱 Which property matters most for a magnifier lens? (a) electrical conductor (b) transparent (c) waterproof (d) flexible
9. 9.True or false: having a wide base makes a building less safe in earthquakes. (a) True (b) False
10. 10.🔢 To follow the engineering design process, what comes right after “Create”? (a) Test (b) Improve (c) Plan (d) Ask
11. 11.What does the tester do? (a) collects the supplies (b) shares out the jobs (c) puts the model together (d) checks the goals are met
12. 12.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 20 cm wide base, tower B is 60 cm tall on a 30 cm base and tower C is 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
13. 13.Which of these is reuse (use again)? (a) turn plastic into tiles (b) melt cans into new cans (c) refill a water bottle (d) switch off unused lights
14. 14.📋 Criteria are … (a) the team names (b) the tools you use (c) goals a design must meet (d) the limits on money
15. 15.Which of these is in tension (pulled)? (a) a squeezed spring (b) a tent guy rope (c) a temple column (d) a pillar under a roof
16. 16.Which of these needs a flexible material? (a) a skipping rope (b) a roof sheet (c) a window pane (d) a magnifier lens
17. 17.🏋️ A 7 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
18. 18.True or false: a flagpole rope wheel is a wedge. (a) False (b) True
19. 19.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
20. 20.Which job does an aerospace engineer do? (a) designs electric motors (b) builds rockets (c) lays out a highway (d) builds a website
21. 21.🪢 A sign weighing 40 N hangs from 4 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
22. 22.💪 Which force is at work: a thrown ball comes down? (a) magnetic force (b) muscular force (c) friction (d) gravity
23. 23.🔺 A flat frame has 4 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
24. 24.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
25. 25.Which of these is caused by muscular force? (a) rain falls to the ground (b) pedalling a cycle (c) a thrown ball comes down (d) a magnet picks up pins
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design C (b) design A (c) design B
27. 27.⚙️ How many simple machines are there in the usual list? (a) 10 (b) 3 (c) 6 (d) 12
28. 28.🔍 Which is the odd one out? (a) a water tap handle (b) a bottle opener (c) a seesaw (d) a crowbar
29. 29.⚖️ Which class of lever is a pair of scissors? (a) class 2 (b) class 3 (c) class 1
30. 30.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 100 cm and the load at 30 cm. Which class of lever is it? (a) class 1 (b) class 3 (c) class 2
31. 31.True or false: a temple column is in compression (pushed). (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) float for 1 minute (b) finish in 40 minutes (c) hold up 500 g (d) lift a cup of water
33. 33.Which of these uses a dome? (a) a bicycle frame (b) a round palace roof (c) a roof truss (d) a shelf on two brackets
34. 34.🛠️ Is a mobile phone made by engineers or found in nature? (a) found in nature (b) made by engineers
35. 35.📋 For a model bridge challenge, is “use only paper and tape” a constraint or a criterion? (a) a criterion (b) a constraint
36. 36.True or false: a wet tiled floor gives more friction. (a) True (b) False
37. 37.🌉 What holds up a long beam bridge in the middle? (a) nothing (b) piers (c) balloons (d) cables only
38. 38.True or false: an aerospace engineer builds rockets. (a) False (b) True
39. 39.⚖️ 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?
40. 40.True or false: a nutcracker is a lever. (a) False (b) True

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