Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 955 · 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 of these is reuse (use again)? (a) carry a cloth bag (b) pulp old paper (c) melt cans into new cans (d) plant in old tyres
2. 2.True or false: a pair of scissors is a class 3 lever (effort in the middle). (a) False (b) True
3. 3.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
4. 4.⚖️ Which class of lever is a nutcracker? (a) class 3 (b) class 1 (c) class 2
5. 5.🔄 Which design-process step is it to check it against goals? (a) Imagine (b) Plan (c) Create (d) Test
6. 6.Which of these is reuse (use again)? (a) switch off unused lights (b) melt cans into new cans (c) refill a water bottle (d) pulp old paper
7. 7.True or false: to help a stuck teammate is poor teamwork. (a) False (b) True
8. 8.⚖️ A lever bar balances. The load is ? N at 40 cm from the fulcrum. The effort is 360 N at 100 cm from the fulcrum on the other side. What is the missing force in newtons?
9. 9.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
10. 10.🪝 A well winch has a handle (wheel) of radius 15 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
11. 11.Which of these is a beam bridge? (a) deck hangs from cables (b) stones squeezed together (c) the simplest bridge (d) a curve under the deck
12. 12.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 2 m, how many metres of rope must you pull?
13. 13.♻️ Reduce, reuse or recycle: use a jar as a pen stand? (a) recycle (b) reduce (c) reuse
14. 14.💪 A cart is pulled to the right with 25 N and to the left with 15 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
15. 15.♻️ Is petrol a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
16. 16.🪝 Fixed or movable pulley: which one stays in one place? (a) a fixed pulley (b) a movable pulley
17. 17.Which of these happens in the Improve step? (a) fix the weak part (b) list the materials (c) brainstorm many ideas (d) ask who will use it
18. 18.🏋️ A 10 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🔍 Which is the odd one out? (a) dry wood (b) graphite (c) steel (d) iron
20. 20.Which of these happens in the Ask step? (a) measure its performance (b) build the model (c) define the problem (d) list the materials
21. 21.🔍 Which is the odd one out? (a) clay pottery (b) graphite (c) steel (d) copper
22. 22.🔄 Is the engineering design process done only once? (a) only for big jobs (b) no, it repeats (c) yes, only once (d) only on Sundays
23. 23.🧑‍🔧 Which branch of engineering uses engineering to help doctors? (a) aerospace (b) electrical (c) civil (d) biomedical
24. 24.⚙️ A wedge is … (a) a wheel on a rod (b) a bar on a pivot (c) a rope on a wheel (d) two ramps back to back
25. 25.🧑‍🔧 Which kind of engineer designs bicycle gears? (a) mechanical (b) chemical (c) civil (d) biomedical
26. 26.True or false: an aerospace engineer builds rockets. (a) False (b) True
27. 27.⚖️ A lever balances when … (a) the bar is short (b) both weights are equal (c) turning effects match (d) the fulcrum moves
28. 28.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a fixed pulley (b) a movable pulley
29. 29.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 20 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
30. 30.🛠️ People need to reach a top floor fast. Which invention helps? (a) a water filter (b) a lift (c) a solar panel (d) a telephone
31. 31.♻️ A family used to throw away 3 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 8 weeks?
32. 32.🤝 Is it good or poor teamwork to laugh at ideas? (a) poor teamwork (b) good teamwork
33. 33.🔺 A flat frame has 4 straight sides joined by loose pins at the corners. What is the least number of corner-to-corner braces needed to make it rigid?
34. 34.🦺 How should you carry scissors? (a) while running (b) points down, closed (c) points up, open (d) by the blades
35. 35.🤝 Is it good or poor teamwork to own up to a mistake? (a) poor teamwork (b) good teamwork
36. 36.🏋️ A force of 390 N pushes a cart 5 m along the floor. How much work is done, in joules?
37. 37.⚖️ A seesaw balances. Zoya (160 N) sits 1 m from the pivot on one side; Asha (160 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
38. 38.🏋️ A longer ramp to the same height needs … (a) the same effort (b) more effort (c) less effort (d) no effort
39. 39.📋 Constraint: the tower must be no taller than 90 cm. The team’s tower is 88 cm tall. Is it within the constraint? (a) No (b) Yes
40. 40.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) aluminium (c) iron (d) copper

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