Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 494 · 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 paper bridge was tested three times. It held 290 g, 250 g and 240 g. What is the mean (average) load it held, in grams?
2. 2.True or false: a bridge pier is in compression (pushed). (a) False (b) True
3. 3.🦺 In the workshop, is it safe to play near a moving drill? (a) not safe (b) safe
4. 4.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 9 cm long in the drawing. How long is the real car, in centimetres?
5. 5.🪢 Tension or compression: a swing chain? (a) compression (b) tension
6. 6.🌉 A beam bridge 150 m long rests on the two river banks and on piers in between, making equal spans of 50 m. How many piers are there?
7. 7.True or false: a well-bucket rope wheel is a lever. (a) True (b) False
8. 8.Which of these uses an arch? (a) a planetarium roof (b) a curved stone doorway (c) a crane arm (d) a slab over a canal
9. 9.True or false: a plank over a drain uses triangles. (a) True (b) False
10. 10.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 20 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
11. 11.🪝 A bucket weighing 110 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
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.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
14. 14.Which job does an aerospace engineer do? (a) lays out a highway (b) designs hearing aids (c) designs aeroplane wings (d) wires a new building
15. 15.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) who won the match? (b) why is the sky blue? (c) how can we build it? (d) what is for lunch?
16. 16.📐 How many metres are in 1 kilometre? (a) 10 (b) 1000 (c) 100 (d) 10000
17. 17.Which of these needs a waterproof material? (a) the core of a wire (b) a plug pin (c) a raincoat (d) a yoga mat
18. 18.True or false: a tunnel helps people store water for summer. (a) False (b) True
19. 19.True or false: a fixed pulley hangs on the rope loop. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a railway track (b) a mountain (c) a bicycle (d) a bridge
21. 21.⚖️ A lever bar balances. The load is ? N at 30 cm from the fulcrum. The effort is 120 N at 80 cm from the fulcrum on the other side. What is the missing force in newtons?
22. 22.💪 Which force is at work: pedalling a cycle? (a) friction (b) muscular force (c) gravity (d) magnetic force
23. 23.🏋️ A force of 100 N did 300 J of work. How many metres did the object move?
24. 24.Which of these is an inclined plane? (a) a wood screw (b) a nut and bolt (c) a wheelchair ramp (d) an axe blade
25. 25.True or false: a chemical engineer refines crude oil. (a) False (b) True
26. 26.🧑‍🔧 Which kind of engineer refines crude oil? (a) chemical (b) civil (c) aerospace (d) mechanical
27. 27.⚙️ Most simple machines make work easier by letting us … (a) use a smaller force (b) switch off gravity (c) make new energy (d) stop all friction
28. 28.🛠️ Is a cloud made by engineers or found in nature? (a) found in nature (b) made by engineers
29. 29.🪢 Tension or compression: a table leg? (a) compression (b) tension
30. 30.📐 How many millimetres are in 1 centimetre? (a) 1000 (b) 10 (c) 100 (d) 5
31. 31.Which job is a spirit level for? (a) check a shelf is level (b) make a hole in wood (c) cut a wooden plank (d) measure a long length
32. 32.🪢 A beam rests on two supports and is pressed down in the middle. Its bottom edge is … (a) twisted (b) squeezed (compression) (c) not affected (d) stretched (tension)
33. 33.True or false: a lift helps people reach a top floor fast. (a) False (b) True
34. 34.🤝 A team of 3 shares 6 equal jobs fairly. Each job takes 4 minutes. How many minutes does each person work?
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
36. 36.Which need does a tunnel meet? (a) carry many people far (b) store water for summer (c) go through a mountain (d) reach a top floor fast
37. 37.🪢 Tension or compression: a tow rope on a car? (a) compression (b) tension
38. 38.🛞 Is friction helpful or a problem here: walking without slipping? (a) a problem (b) helpful
39. 39.⚙️ How many simple machines are there in the usual list? (a) 10 (b) 3 (c) 6 (d) 12
40. 40.🔺 Why can an arch carry heavy loads? (a) it is very light (b) it works in compression (c) it bends easily (d) it is hollow

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