Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 595 · 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.🪝 What does a single fixed pulley change? (a) the direction of pull (b) the size of the load (c) gravity (d) the colour of rope
2. 2.🪝 A well winch has a handle (wheel) of radius 16 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
3. 3.🔍 Which is the odd one out? (a) tie back long hair (b) put tools back after use (c) let adults use hot glue (d) play near a moving drill
4. 4.🤝 A team of 4 shares 20 equal jobs fairly. Each job takes 7 minutes. How many minutes does each person work?
5. 5.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) change lots at once (d) repeat each test
6. 6.True or false: a tyre with deep treads gives less friction. (a) True (b) False
7. 7.True or false: to change lots at once is good testing. (a) False (b) True
8. 8.🦺 What protects your eyes when sawing or drilling? (a) nothing (b) safety goggles (c) sunglasses (d) a cap
9. 9.Which job is a protractor for? (a) tighten a nut (b) measure a long length (c) measure an angle (d) drive in a nail
10. 10.🔺 Why can an arch carry heavy loads? (a) it is very light (b) it bends easily (c) it is hollow (d) it works in compression
11. 11.🤝 A team of 3 shares 9 equal jobs fairly. Each job takes 5 minutes. How many minutes does each person work?
12. 12.🔺 Which strong shape does a truss bridge side use? (a) dome (b) arch (c) triangle (d) beam
13. 13.🔢 To follow the engineering design process, which is the FIRST step? (a) Ask (b) Imagine (c) Improve (d) Plan
14. 14.True or false: a mechanical engineer designs factory machines. (a) True (b) False
15. 15.💪 In a tug of war, one team pulls right with 90 N and the other pulls left with 50 N. What is the size of the net force, in newtons?
16. 16.What does the recorder do? (a) shares out the jobs (b) puts the model together (c) tracks what is used up (d) writes down results
17. 17.🪝 A winch has a wheel of radius 2 cm and an axle of radius 1 cm. What effort on the wheel lifts a 160 N bucket on the axle, in newtons? (ideal)
18. 18.🔄 What is the FIRST step of the engineering design process? (a) Improve (b) Create (c) Ask (d) Test
19. 19.💪 Two children push a box to the right, one with 95 N and the other with 40 N. What is the net (total) force on the box, in newtons?
20. 20.True or false: a truss bridge side uses triangles. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a chisel (b) a knife edge (c) an axe blade (d) a crane hook block
22. 22.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) repeat each test (d) record every result
23. 23.True or false: to ignore the team plan is good teamwork. (a) False (b) True
24. 24.🪝 A well winch has a handle (wheel) of radius 12 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
25. 25.True or false: a chemical engineer designs a paint factory. (a) False (b) True
26. 26.True or false: a biomedical engineer plans a power grid. (a) True (b) False
27. 27.⚖️ A seesaw balances. Kabir (? N) sits 3 m from the pivot on one side; Zoya (420 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
28. 28.🌉 What holds up a long beam bridge in the middle? (a) nothing (b) cables only (c) piers (d) balloons
29. 29.♻️ Reduce, reuse or recycle: melt glass into new jars? (a) reduce (b) recycle (c) reuse
30. 30.Which job is a tape measure for? (a) measure a long length (b) check a shelf is level (c) grip and bend wire (d) cut a wooden plank
31. 31.🔄 Is the engineering design process done only once? (a) yes, only once (b) only on Sundays (c) only for big jobs (d) no, it repeats
32. 32.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) balanced (c) doubled (d) unbalanced
33. 33.True or false: flowing river water is a non-renewable energy source. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) let adults use hot glue (b) wear safety goggles (c) run while holding tools (d) cut away from your body
35. 35.🔍 Which is the odd one out? (a) oil on a squeaky hinge (b) powder on a carrom board (c) a wheel on ball bearings (d) a rough doormat
36. 36.🪢 A sign weighing 850 N hangs from 5 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
37. 37.True or false: a fridge helps people keep food fresh longer. (a) True (b) False
38. 38.True or false: a tunnel helps people keep food fresh longer. (a) False (b) True
39. 39.🌉 A beam bridge is 280 m long. Piers split it into equal spans of 35 m. How many spans are there?
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) strengthen the weak part

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