Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 153 · 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.🔺 How do engineers stop a square frame from wobbling? (a) add a diagonal brace (b) paint it (c) take off a side (d) make it bigger
2. 2.🏋️ A force of 140 N did 980 J of work. How many metres did the object move?
3. 3.🛠️ Is a lift made by engineers or found in nature? (a) found in nature (b) made by engineers
4. 4.Which of these is a pulley? (a) a steering wheel (b) a claw hammer on a nail (c) a crane hook block (d) a crowbar
5. 5.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) building tall and narrow (c) raising heavy tanks high (d) adding cross bracing
6. 6.💪 In a tug of war, one team pulls right with 75 N and the other pulls left with 50 N. What is the size of the net force, in newtons?
7. 7.🔺 Which strong shape does a lintel over a door use? (a) arch (b) dome (c) beam (d) triangle
8. 8.True or false: to give kind feedback is good teamwork. (a) False (b) True
9. 9.💪 A bag has a mass of 32 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
10. 10.True or false: pulling up your socks is a push. (a) True (b) False
11. 11.True or false: diesel is a renewable energy source. (a) False (b) True
12. 12.🏋️ Pushing a crate 6 m took 1140 J of work. What force was used, in newtons?
13. 13.True or false: a pair of tweezers is a class 3 lever (effort in the middle). (a) True (b) False
14. 14.🧱 Which material is best for the core of an electric wire? (a) wood (b) glass (c) rubber (d) copper
15. 15.🌉 Which bridge type can cross the widest gap in one span? (a) arch bridge (b) beam bridge (c) log bridge (d) suspension bridge
16. 16.True or false: “the simplest bridge” is a beam bridge. (a) False (b) True
17. 17.Which job does a civil engineer do? (a) designs artificial limbs (b) designs school networks (c) plans a dam (d) designs a paint factory
18. 18.🔍 Which is the odd one out? (a) a claw hammer on a nail (b) a chisel (c) a door stopper (d) an axe blade
19. 19.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load ÷ effort (c) effort ÷ load (d) load × effort
20. 20.True or false: a round doorknob is a wedge. (a) True (b) False
21. 21.🔺 One side of a straw bridge is a row of 10 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
22. 22.🔍 Which is the odd one out? (a) steel (b) brass (c) graphite (d) glass
23. 23.♻️ Is sunlight a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
24. 24.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 0 cm and the load at 60 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
25. 25.🛠️ Which of these is a problem an engineer could solve? (a) a lost cricket match (b) a road that floods (c) a sad song (d) a boring story
26. 26.🔺 Which strong shape does a curved stone doorway use? (a) arch (b) dome (c) triangle (d) beam
27. 27.🤝 A team plans for 30 minutes, builds for 20 minutes and then tests for 15 minutes, one after another. How many minutes is that in all?
28. 28.🪝 A winch has a wheel of radius 6 cm and an axle of radius 3 cm. What effort on the wheel lifts a 140 N bucket on the axle, in newtons? (ideal)
29. 29.🔍 Which is the odd one out? (a) let adults use hot glue (b) touch a hot glue tip (c) play near a moving drill (d) use a cracked tool
30. 30.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
31. 31.🔍 Which is the odd one out? (a) a crane hook block (b) a well-bucket rope wheel (c) a flagpole rope wheel (d) a truck loading ramp
32. 32.💪 In which unit do we measure force? (a) newton (N) (b) litre (L) (c) metre (m) (d) second (s)
33. 33.🔺 Which strong shape does a slab over a canal use? (a) arch (b) triangle (c) dome (d) beam
34. 34.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
35. 35.Which job does a computer engineer do? (a) designs school networks (b) plans a power grid (c) designs car engines (d) makes medicines in bulk
36. 36.🪝 A well winch has a handle (wheel) of radius 14 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
37. 37.True or false: a civil engineer designs car engines. (a) True (b) False
38. 38.True or false: a rainbow is found in nature. (a) True (b) False
39. 39.💪 Two children push a box to the right, one with 90 N and the other with 50 N. What is the net (total) force on the box, in newtons?
40. 40.True or false: to tie back long hair is not safe. (a) True (b) False

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