Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 447 · 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.⚖️ A lever bar balances. The load is 120 N at 10 cm from the fulcrum. The effort is ? N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
2. 2.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
3. 3.💪 In which unit do we measure force? (a) second (s) (b) litre (L) (c) metre (m) (d) newton (N)
4. 4.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
5. 5.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
6. 6.True or false: a truss bridge side uses triangles. (a) True (b) False
7. 7.⚖️ Going along a lever from one end to the other, the order is: load, fulcrum, effort. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
8. 8.⚖️ In a class 3 lever, what is in the middle? (a) the effort (b) the pulley (c) the fulcrum (d) the load
9. 9.♻️ A project report has 78 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
10. 10.🏋️ A machine lifts a load of 320 N when you push with 80 N. What is its mechanical advantage (MA)?
11. 11.True or false: pressing a doorbell is a pull. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) use at most 20 straws (b) carry 10 coins (c) stand in a fan breeze (d) hold up 500 g
13. 13.🪢 Tension is a force that … (a) pushes or squeezes (b) turns things (c) heats things (d) pulls or stretches
14. 14.📋 Criterion: the model bridge must hold at least 400 g. In the test it held 550 g. Does it meet the criterion? (a) No (b) Yes
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
16. 16.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
17. 17.🧑‍🔧 Which kind of engineer designs artificial limbs? (a) civil (b) electrical (c) computer (d) biomedical
18. 18.True or false: a civil engineer designs a metro tunnel. (a) False (b) True
19. 19.♻️ Reduce, reuse or recycle: turn plastic into tiles? (a) reuse (b) recycle (c) reduce
20. 20.True or false: a ceiling fan is made by engineers. (a) False (b) True
21. 21.What does the recorder do? (a) collects the supplies (b) runs the tests (c) puts the model together (d) keeps the design notes
22. 22.📐 A beam is 990 cm long. How long is it in metres? =
23. 23.True or false: to touch a hot glue tip is not safe. (a) False (b) True
24. 24.🔢 To follow the engineering design process, which is the LAST step? (a) Imagine (b) Ask (c) Improve (d) Plan
25. 25.🔄 Is the engineering design process done only once? (a) no, it repeats (b) only for big jobs (c) yes, only once (d) only on Sundays
26. 26.⚖️ A seesaw balances. Ravi (170 N) sits 1 m from the pivot on one side; Meena (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
27. 27.💪 A box weighs 390 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
28. 28.♻️ A project report has 14 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
29. 29.🔍 Which is the odd one out? (a) fit on a school desk (b) stand in a fan breeze (c) hold up 500 g (d) keep ice for 1 hour
30. 30.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 13 cm long in the drawing. How long is the real car, in centimetres?
31. 31.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a wooden plank 9 N, a carpet 13 N, ice 2 N, a glass sheet 5 N. How many newtons more were needed on a carpet than on ice?
32. 32.🔍 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) sand on a slippery path
33. 33.🔺 Which strong shape does a bicycle frame use? (a) beam (b) arch (c) triangle (d) dome
34. 34.📋 Constraint: the tower must be no taller than 100 cm. The team’s tower is 94 cm tall. Is it within the constraint? (a) No (b) Yes
35. 35.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 40 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 20 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
36. 36.🤝 A team plans for 60 minutes, builds for 20 minutes and then tests for 10 minutes, one after another. How many minutes is that in all?
37. 37.True or false: a volcano is found in nature. (a) True (b) False
38. 38.Which of these is a beam bridge? (a) a flat deck on piers (b) stones squeezed together (c) pushes out on its ends (d) a rope bridge in hills
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.True or false: “pushes out on its ends” is an arch bridge. (a) False (b) True

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