Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 719 · 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 beam bridge is 450 m long. Piers split it into equal spans of 45 m. How many spans are there?
2. 2.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
3. 3.What does the materials manager do? (a) checks the goals are met (b) cuts and joins parts (c) keeps the team on track (d) collects the supplies
4. 4.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 2 N, a glass sheet 6 N, a carpet 7 N, sandpaper 11 N. Which surface gave the most friction? (a) a carpet (b) ice (c) sandpaper (d) a glass sheet
5. 5.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
6. 6.🔢 To follow the engineering design process, which comes first: “Plan” or “Ask”? (a) Ask (b) Plan
7. 7.💪 Which force is at work: rubbing hands warms them? (a) magnetic force (b) friction (c) muscular force (d) gravity
8. 8.🔍 Which is the odd one out? (a) a door stopper (b) the tip of a nail (c) a crane hook block (d) an axe blade
9. 9.⚖️ A seesaw balances. Asha (800 N) sits 2 m from the pivot on one side; Ravi (? N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
10. 10.True or false: a bicycle is found in nature. (a) False (b) True
11. 11.🔢 To follow the engineering design process, what comes right after “Create”? (a) Imagine (b) Plan (c) Test (d) Improve
12. 12.🏋️ Pushing a crate 10 m took 1800 J of work. What force was used, in newtons?
13. 13.Which of these is in tension (pulled)? (a) a bridge pier (b) a tall bridge tower (c) a table leg (d) a stretched rubber band
14. 14.True or false: a mechanical engineer designs hearing aids. (a) False (b) True
15. 15.🧱 Which material is best for the core of an electric wire? (a) copper (b) rubber (c) glass (d) wood
16. 16.True or false: a truck loading ramp is an inclined plane. (a) True (b) False
17. 17.True or false: a bridge helps people cross a wide river. (a) False (b) True
18. 18.🪝 A pulley system has 3 rope sections holding up the load. To lift the load by 2 m, how many metres of rope must you pull?
19. 19.True or false: a fixed pulley is on a flagpole top. (a) True (b) False
20. 20.True or false: a computer engineer plans a space mission. (a) True (b) False
21. 21.📋 For a model bridge challenge, is “carry 10 coins” a constraint or a criterion? (a) a criterion (b) a constraint
22. 22.🔺 Which strong shape does a roof truss use? (a) beam (b) triangle (c) arch (d) dome
23. 23.🪢 Which material is good in tension but useless in compression? (a) a concrete block (b) a rope (c) a stone (d) a brick
24. 24.True or false: a bridge is made by engineers. (a) False (b) True
25. 25.🏋️ A machine lifts a load of 160 N when you push with 80 N. What is its mechanical advantage (MA)?
26. 26.What does the team leader do? (a) keeps the design notes (b) cuts and joins parts (c) checks the goals are met (d) shares out the jobs
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
28. 28.📐 How many metres are in 1 kilometre? (a) 10000 (b) 10 (c) 100 (d) 1000
29. 29.True or false: an aerospace engineer designs hearing aids. (a) True (b) False
30. 30.♻️ A family used to throw away 8 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 8 weeks?
31. 31.⚖️ A seesaw balances. Zoya (? N) sits 3 m from the pivot on one side; Asha (300 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
32. 32.⚖️ A lever bar balances. The load is ? N at 50 cm from the fulcrum. The effort is 300 N at 100 cm from the fulcrum on the other side. What is the missing force in newtons?
33. 33.⚙️ Which simple machine is a nutcracker? (a) screw (b) pulley (c) lever (d) wheel and axle
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) sketch three ideas
35. 35.🪝 A pulley system has 3 rope sections holding up the load. To lift the load by 3 m, how many metres of rope must you pull?
36. 36.True or false: a movable pulley makes you pull 2× rope. (a) True (b) False
37. 37.True or false: to agree before changing is good teamwork. (a) False (b) True
38. 38.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
39. 39.⚖️ Which class of lever is a broom when sweeping? (a) class 3 (b) class 1 (c) class 2
40. 40.📋 Constraint: the tower must be no taller than 60 cm. The team’s tower is 56 cm tall. Is it within the constraint? (a) Yes (b) No

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