Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 821 · 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.🪝 What does a single fixed pulley change? (a) the colour of rope (b) gravity (c) the size of the load (d) the direction of pull
2. 2.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 4 N, a wooden plank 6 N, a carpet 7 N, sandpaper 9 N. Which surface gave the most friction? (a) a wooden plank (b) sandpaper (c) a carpet (d) a glass sheet
3. 3.🪝 A pulley system lifts an 810 N load with an effort of 270 N. What is its mechanical advantage (MA)?
4. 4.🔺 A frame shaped like a hexagon is made of straws joined by loose pins, with 3 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid
5. 5.🏚️ Three solid model towers are made of the same material. Tower A is 90 cm tall on a 30 cm wide base, tower B is 20 cm tall on a 10 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
6. 6.🌉 In a suspension bridge, the main cables are in … (a) no force (b) tension (c) friction (d) compression
7. 7.🦺 In the workshop, is it safe to touch a hot glue tip? (a) safe (b) not safe
8. 8.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) aerospace (b) civil (c) computer (d) chemical
9. 9.🧱 Which property matters most for a roof sheet? (a) flexible (b) transparent (c) waterproof (d) heat insulator
10. 10.True or false: to try it out is the Improve step. (a) True (b) False
11. 11.True or false: a yoga mat needs a flexible material. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) tie back long hair (b) clamp wood before sawing (c) run while holding tools (d) put tools back after use
13. 13.💪 A cart is pulled to the right with 90 N and to the left with 105 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
14. 14.🤝 A team of 5 shares 10 equal jobs fairly. Each job takes 6 minutes. How many minutes does each person work?
15. 15.🤝 How do engineers share a design with others? (a) secret notes (b) no drawings at all (c) only talking fast (d) clear labelled sketches
16. 16.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) wear safety goggles (b) tie back long hair (c) clamp wood before sawing (d) touch a hot glue tip
18. 18.🧑‍🔧 Which kind of engineer designs a metro tunnel? (a) electrical (b) computer (c) chemical (d) civil
19. 19.🌉 A beam bridge 120 m long is split by piers into 3 equal spans. How long is each span, in metres?
20. 20.🔄 Which design-process step is it to find the limits? (a) Plan (b) Improve (c) Imagine (d) Ask
21. 21.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 100 cm and the load at 70 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
22. 22.True or false: flowing river water is a renewable energy source. (a) True (b) False
23. 23.🪝 A wheel and axle is a big wheel fixed to … (a) a loose rope (b) a smaller rod (axle) (c) a flat ramp (d) a sharp wedge
24. 24.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
25. 25.⚖️ Which class of lever is a wheelbarrow? (a) class 1 (b) class 3 (c) class 2
26. 26.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
27. 27.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) why is the sky blue? (b) who won the match? (c) what is for lunch? (d) how can we build it?
28. 28.True or false: a nutcracker is a lever. (a) False (b) True
29. 29.🏋️ A force of 140 N did 1260 J of work. How many metres did the object move?
30. 30.Which need does a solar panel meet? (a) carry many people far (b) see very tiny things (c) keep food fresh longer (d) make power from sunlight
31. 31.⚙️ Most simple machines make work easier by letting us … (a) stop all friction (b) switch off gravity (c) make new energy (d) use a smaller force
32. 32.True or false: “the longest spans of all” is an arch bridge. (a) True (b) False
33. 33.True or false: “fit on a school desk” is a criterion (a goal). (a) False (b) True
34. 34.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 20 cm and the load at 40 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
35. 35.🤝 A team plans for 55 minutes, builds for 20 minutes and then tests for 20 minutes, one after another. How many minutes is that in all?
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) choose and draw one
37. 37.True or false: to record every result is good testing. (a) False (b) True
38. 38.📐 A model car is drawn so that 1 cm stands for 40 cm. The car is 3 cm long in the drawing. How long is the real car, in centimetres?
39. 39.True or false: to record every result is poor testing. (a) True (b) False
40. 40.⚖️ A lever bar balances. The load is 270 N at 40 cm from the fulcrum. The effort is 360 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?

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