Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 337 · 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: to let adults use hot glue is not safe. (a) False (b) True
2. 2.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
3. 3.📋 A constraint is … (a) a kind of glue (b) a goal for success (c) a final test (d) a limit you must keep to
4. 4.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a carpet 7 N, sandpaper 10 N, ice 1 N, a wooden plank 4 N. Which surface gave the least friction? (a) sandpaper (b) ice (c) a carpet (d) a wooden plank
5. 5.🔺 A frame shaped like a square is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) rigid (b) wobbly
6. 6.⚙️ Which simple machine is a nut and bolt? (a) lever (b) pulley (c) inclined plane (d) screw
7. 7.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a constraint (b) a criterion
8. 8.🌉 What holds up a long beam bridge in the middle? (a) cables only (b) piers (c) nothing (d) balloons
9. 9.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 11 cm long in the drawing. How long is the real car, in centimetres?
10. 10.🏋️ A machine lifts a load of 520 N when you push with 130 N. What is its mechanical advantage (MA)?
11. 11.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they are cheap (c) they bend, not break (d) they stop shaking
12. 12.🔍 Which is the odd one out? (a) cotton cloth (b) dry wood (c) brass (d) plastic
13. 13.🔍 Which is the odd one out? (a) a temple column (b) a pillar under a roof (c) a stretched rubber band (d) a squeezed spring
14. 14.True or false: pulling up your socks is a pull. (a) False (b) True
15. 15.🏋️ Pushing a crate 7 m took 3290 J of work. What force was used, in newtons?
16. 16.Which of these is caused by friction? (a) rain falls to the ground (b) a magnet picks up pins (c) pedalling a cycle (d) rubbing hands warms them
17. 17.True or false: to dream up possible fixes is the Plan step. (a) True (b) False
18. 18.🔢 To follow the engineering design process, which comes first: “Imagine” or “Create”? (a) Create (b) Imagine
19. 19.⚙️ Most simple machines make work easier by letting us … (a) use a smaller force (b) switch off gravity (c) stop all friction (d) make new energy
20. 20.🪝 A bucket weighing 30 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
21. 21.True or false: a chemical engineer lays out a highway. (a) False (b) True
22. 22.♻️ Reduce, reuse or recycle: print on both sides? (a) reuse (b) recycle (c) reduce
23. 23.Which need does a fridge meet? (a) cross a wide river (b) reach a top floor fast (c) make water safe to drink (d) keep food fresh longer
24. 24.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 9 N, ice 3 N, a glass sheet 4 N, a wooden plank 8 N. Which surface gave the most friction? (a) a wooden plank (b) sandpaper (c) ice (d) a glass sheet
25. 25.Which of these is in compression (pushed)? (a) a tug of war rope (b) a stone in an arch (c) a hanging lamp chain (d) a tent guy rope
26. 26.🔄 Which design-process step is it to ask who will use it? (a) Test (b) Imagine (c) Improve (d) Ask
27. 27.🧑‍🔧 Which kind of engineer designs car engines? (a) electrical (b) civil (c) aerospace (d) mechanical
28. 28.♻️ A sustainable design … (a) uses the most plastic (b) protects the future (c) wastes water (d) lasts one day
29. 29.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 5 m, how many metres of rope must you pull?
30. 30.📋 Criterion: the model bridge must hold at least 800 g. In the test it held 850 g. Does it meet the criterion? (a) No (b) Yes
31. 31.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
32. 32.True or false: a seesaw is a class 3 lever (effort in the middle). (a) False (b) True
33. 33.📐 On a plan, 1 cm stands for 5 m. A wall is 10 cm long on the plan. How long is the real wall, in metres?
34. 34.🌉 Which bridge type: “stones squeezed together”? (a) suspension bridge (b) arch bridge (c) beam bridge
35. 35.💪 In a tug of war, one team pulls left with 60 N and the other pulls right with 20 N. What is the size of the net force, in newtons?
36. 36.True or false: to talk over others is poor teamwork. (a) False (b) True
37. 37.True or false: to cut towards your hand is safe. (a) True (b) False
38. 38.True or false: a steering wheel is a wedge. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a swing chain (b) a brick at a wall base (c) a pillar under a roof (d) a stone in an arch
40. 40.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 2 m, how many metres of rope must you pull?

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