Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 316 · 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.🔍 Which is the odd one out? (a) skating on ice (b) a smooth steel slide (c) a rough doormat (d) a wheel on ball bearings
2. 2.⚖️ A seesaw balances. Kabir (? N) sits 1 m from the pivot on one side; Arjun (100 N) sits 2 m from the pivot on the other side. What is the missing weight in newtons?
3. 3.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False
4. 4.🛠️ Is a dam made by engineers or found in nature? (a) made by engineers (b) found in nature
5. 5.🪢 Tension or compression: a table leg? (a) tension (b) compression
6. 6.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 40 cm wide base, tower B is 150 cm tall on a 30 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
7. 7.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a glass sheet 4 N, a wooden plank 6 N, a carpet 9 N. How many newtons more were needed on a carpet than on ice?
8. 8.🔍 Which is the odd one out? (a) put tools back after use (b) clamp wood before sawing (c) touch a hot glue tip (d) let adults use hot glue
9. 9.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
10. 10.📐 On a plan, 1 cm stands for 20 m. A wall is 11 cm long on the plan. How long is the real wall, in metres?
11. 11.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 200 g. What is the mean (average) load it held, in grams?
12. 12.🪢 Tension or compression: a bridge pier? (a) tension (b) compression
13. 13.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
14. 14.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) leaving out steel bars (c) using flexible joints (d) using a light roof
15. 15.🛠️ What does an engineer do before building anything? (a) builds at once (b) buys every material (c) paints the model (d) understands the problem
16. 16.True or false: to brainstorm many ideas is the Create step. (a) False (b) True
17. 17.🪢 A stage stands on 3 identical legs and each leg is squeezed with 200 N. What is the total load on the stage, in newtons?
18. 18.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 20 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 90 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
19. 19.🤝 A team plans for 10 minutes, builds for 40 minutes and then tests for 20 minutes, one after another. How many minutes is that in all?
20. 20.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 30 N at 100 cm from the fulcrum on the other side. What is the missing force in newtons?
21. 21.⚖️ A seesaw balances. Kabir (480 N) sits ? m from the pivot on one side; Ravi (240 N) sits 4 m from the pivot on the other side. What is the missing distance in metres?
22. 22.True or false: to record every result is poor testing. (a) True (b) False
23. 23.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
24. 24.Which of these is made by engineers? (a) a lift (b) a waterfall (c) a river (d) a mountain
25. 25.True or false: a fixed pulley halves the effort. (a) True (b) False
26. 26.🛠️ People need to carry many people far. Which invention helps? (a) a water filter (b) a dam (c) a train (d) a microscope
27. 27.⚖️ 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
28. 28.True or false: to hide a failed test is good testing. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) leave tools on the floor (b) touch a hot glue tip (c) tie back long hair (d) run while holding tools
30. 30.💪 A bag has a mass of 46 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
31. 31.Which of these is an inclined plane? (a) an axe blade (b) a playground slide (c) a crowbar (d) a chisel
32. 32.True or false: a biomedical engineer builds hospital scanners. (a) False (b) True
33. 33.🏋️ An 18 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
34. 34.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a fixed pulley (b) a movable pulley
35. 35.💪 Which force is at work: a river flows downhill? (a) friction (b) gravity (c) muscular force (d) magnetic force
36. 36.🌉 Which bridge type: “deck hangs from cables”? (a) suspension bridge (b) arch bridge (c) beam bridge
37. 37.🔍 Which is the odd one out? (a) a mountain (b) a coral reef (c) a rainbow (d) a satellite
38. 38.⚖️ In a class 1 lever, what is in the middle? (a) the effort (b) nothing (c) the fulcrum (d) the load
39. 39.True or false: to do all the work alone is poor teamwork. (a) True (b) False
40. 40.True or false: a switch contact needs a waterproof material. (a) False (b) True

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