Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 992 · 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) keep ice for 1 hour (b) use at most 20 straws (c) carry 10 coins (d) stand in a fan breeze
2. 2.💪 In a tug of war, one team pulls right with 25 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
3. 3.🏋️ A longer ramp to the same height needs … (a) more effort (b) the same effort (c) less effort (d) no effort
4. 4.📐 On a plan, 1 cm stands for 10 m. A wall is 14 cm long on the plan. How long is the real wall, in metres?
5. 5.True or false: to build the model is the Create step. (a) False (b) True
6. 6.🪝 A bucket weighing 100 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
7. 7.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
8. 8.Which of these uses an arch? (a) a crane arm (b) a roof truss (c) an old stone bridge (d) an electric pylon
9. 9.🏋️ Pushing a crate 9 m took 1980 J of work. What force was used, in newtons?
10. 10.Which of these happens in the Improve step? (a) list the materials (b) think of wild ideas (c) fix the weak part (d) dream up possible fixes
11. 11.🔍 Which is the odd one out? (a) a rough doormat (b) a wheel on ball bearings (c) skating on ice (d) a wet tiled floor
12. 12.What does the builder do? (a) collects the supplies (b) writes down results (c) puts the model together (d) keeps the design notes
13. 13.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
14. 14.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
15. 15.🏚️ Three solid model towers are made of the same material. Tower A is 200 cm tall on a 40 cm wide base, tower B is 60 cm tall on a 20 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
16. 16.🛠️ What does an engineer do before building anything? (a) understands the problem (b) buys every material (c) builds at once (d) paints the model
17. 17.True or false: an aerospace engineer plans a space mission. (a) False (b) True
18. 18.True or false: a truss bridge side uses a dome. (a) True (b) False
19. 19.Which of these is in tension (pulled)? (a) a tall bridge tower (b) a brick at a wall base (c) a squeezed spring (d) a crane lifting cable
20. 20.📋 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
21. 21.🪢 Tension or compression: a hanging lamp chain? (a) tension (b) compression
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the strongest? (a) design B (b) design C (c) design A
23. 23.🌉 What holds up a long beam bridge in the middle? (a) piers (b) nothing (c) cables only (d) balloons
24. 24.🔍 Which is the odd one out? (a) a screw jack (b) a nut and bolt (c) a door stopper (d) a bottle cap
25. 25.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) tie back long hair (b) touch a hot glue tip (c) use a cracked tool (d) leave tools on the floor
27. 27.🔍 Which is the odd one out? (a) having a wide base (b) making brittle joints (c) using a heavy roof (d) raising heavy tanks high
28. 28.🛠️ Is a mobile phone made by engineers or found in nature? (a) found in nature (b) made by engineers
29. 29.⚖️ Along a straight bar, measured from the left end, the effort is at 90 cm, the fulcrum at 30 cm and the load at 50 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
30. 30.⚖️ A lever balances when … (a) the fulcrum moves (b) both weights are equal (c) turning effects match (d) the bar is short
31. 31.♻️ A sustainable design … (a) lasts one day (b) protects the future (c) wastes water (d) uses the most plastic
32. 32.Which of these is a suspension bridge? (a) pushes out on its ends (b) a curve under the deck (c) a rope bridge in hills (d) a log across a stream
33. 33.♻️ Which energy source will never run out? (a) petrol (b) sunlight (c) diesel (d) coal
34. 34.True or false: to test it only once is good testing. (a) True (b) False
35. 35.📐 How many centimetres are in 1 metre? (a) 1000 (b) 100 (c) 10 (d) 60
36. 36.🤝 Why do engineers work in teams? (a) to work alone (b) to finish nothing (c) to argue more (d) many skills and ideas
37. 37.🪝 A well winch has a handle (wheel) of radius 12 cm turning an axle of radius 3 cm. What is its mechanical advantage (MA)?
38. 38.🌉 Which bridge type: “the longest spans of all”? (a) beam bridge (b) arch bridge (c) suspension bridge
39. 39.True or false: a lemon squeezer is a class 1 lever (fulcrum in the middle). (a) False (b) True
40. 40.🛠️ Engineers use maths and which other subject the most? (a) cooking (b) music (c) dance (d) science

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