Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 963 · 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 family used to throw away 4 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 9 weeks?
2. 2.🏋️ A force of 60 N pushes a cart 4 m along the floor. How much work is done, in joules?
3. 3.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
4. 4.True or false: a rough doormat gives less friction. (a) True (b) False
5. 5.🌉 Which bridge type: “a log across a stream”? (a) suspension bridge (b) arch bridge (c) beam bridge
6. 6.📋 For a model bridge challenge, is “spend at most ₹100” a constraint or a criterion? (a) a constraint (b) a criterion
7. 7.♻️ Is diesel a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
8. 8.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 30 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 120 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
9. 9.Which job is sandpaper for? (a) smooth a rough edge (b) grip and bend wire (c) drive in a nail (d) measure an angle
10. 10.True or false: a fixed pulley only changes direction. (a) True (b) False
11. 11.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
12. 12.🏋️ A longer ramp to the same height needs … (a) no effort (b) more effort (c) less effort (d) the same effort
13. 13.🤝 Why do engineers work in teams? (a) to argue more (b) many skills and ideas (c) to finish nothing (d) to work alone
14. 14.True or false: to agree before changing is poor teamwork. (a) True (b) False
15. 15.📐 How many metres are in 1 kilometre? (a) 100 (b) 10 (c) 10000 (d) 1000
16. 16.📋 Constraint: the tower must be no taller than 80 cm. The team’s tower is 80 cm tall. Is it within the constraint? (a) No (b) Yes
17. 17.True or false: sand on a slippery path gives more friction. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a stretched rubber band (b) a tow rope on a car (c) a bridge pier (d) a swing chain
19. 19.🏋️ A machine lifts a load of 300 N when you push with 100 N. What is its mechanical advantage (MA)?
20. 20.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) change lots at once (d) measure the same way
21. 21.💪 Two children push a box to the right, one with 85 N and the other with 35 N. What is the net (total) force on the box, in newtons?
22. 22.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
23. 23.Which of these is recycle (make new things)? (a) print on both sides (b) give old books away (c) melt cans into new cans (d) carry a cloth bag
24. 24.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a criterion (b) a constraint
25. 25.🔺 Which strong shape does an electric pylon use? (a) triangle (b) beam (c) dome (d) arch
26. 26.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
27. 27.🤝 A team plans for 35 minutes, builds for 20 minutes and then tests for 5 minutes, one after another. How many minutes is that in all?
28. 28.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
29. 29.⚙️ How many simple machines are there in the usual list? (a) 6 (b) 10 (c) 3 (d) 12
30. 30.True or false: a waterfall is made by engineers. (a) True (b) False
31. 31.🔺 Which strong shape does a fort gateway use? (a) beam (b) triangle (c) arch (d) dome
32. 32.🔄 Is the engineering design process done only once? (a) yes, only once (b) only on Sundays (c) no, it repeats (d) only for big jobs
33. 33.True or false: a lintel over a door uses a dome. (a) True (b) False
34. 34.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: sandpaper 9 N, a glass sheet 1 N, a wooden plank 4 N, a carpet 7 N. How many newtons more were needed on sandpaper than on a glass sheet?
35. 35.🪝 Fixed or movable pulley: which one halves the effort? (a) a movable pulley (b) a fixed pulley
36. 36.🛞 More or less friction: a wheel on ball bearings? (a) less friction (b) more friction
37. 37.True or false: a mechanical engineer designs a flyover. (a) True (b) False
38. 38.Which of these is caused by magnetic force? (a) lifting a school bag (b) a compass needle turns (c) squeezing a lemon (d) shoes grip the floor
39. 39.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 5 N, a wooden plank 8 N, a carpet 11 N, ice 4 N. Which surface gave the most friction? (a) a glass sheet (b) a carpet (c) a wooden plank (d) ice
40. 40.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) aerospace (b) civil (c) electrical (d) biomedical

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