Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 439 · 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 simple machine is a round doorknob? (a) lever (b) wedge (c) wheel and axle (d) screw
2. 2.🛞 Which surface gives the MOST friction to a sliding block? (a) glass (b) polished marble (c) sandpaper (d) ice
3. 3.🔧 Which tool would you use to smooth a rough edge? (a) a spirit level (b) pliers (c) sandpaper (d) a spanner
4. 4.🛠️ What does an engineer do before building anything? (a) paints the model (b) buys every material (c) builds at once (d) understands the problem
5. 5.🛞 Rubbing your hands fast makes them … (a) wet (b) warm (c) cold (d) magnetic
6. 6.🔢 To follow the engineering design process, what comes right after “Imagine”? (a) Plan (b) Ask (c) Improve (d) Test
7. 7.Which of these needs a transparent material? (a) an oven glove (b) a water tank (c) a window pane (d) a yoga mat
8. 8.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) unbalanced (c) balanced (d) doubled
9. 9.🛠️ People need to store water for summer. Which invention helps? (a) a water filter (b) a solar panel (c) a microscope (d) a dam
10. 10.🏚️ Why is a wide base safer? (a) it is colourful (b) it is lighter (c) it is harder to tip over (d) it is taller
11. 11.🌉 A beam bridge 50 m long rests on the two river banks and on piers in between, making equal spans of 10 m. How many piers are there?
12. 12.Which of these is reuse (use again)? (a) turn plastic into tiles (b) fix a dripping tap (c) melt cans into new cans (d) refill a water bottle
13. 13.🪢 A concrete slab weighing 4200 N rests evenly on 2 identical pillars. What compression force does each pillar carry, in newtons?
14. 14.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 90 cm and the load at 30 cm. Which class of lever is it? (a) class 2 (b) class 1 (c) class 3
15. 15.🌉 A beam bridge 135 m long is split by piers into 3 equal spans. How long is each span, in metres?
16. 16.🤝 In a design team, who keeps the design notes? (a) builder (b) materials manager (c) team leader (d) recorder
17. 17.True or false: to let adults use hot glue is not safe. (a) False (b) True
18. 18.⚖️ 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
19. 19.Which of these uses a beam? (a) a crane arm (b) a round palace roof (c) a fort gateway (d) a lintel over a door
20. 20.⚖️ A seesaw balances. Arjun (? N) sits 1 m from the pivot on one side; Meena (200 N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
21. 21.🔍 Which is the odd one out? (a) a well winch handle (b) a knife edge (c) a water tap handle (d) a round doorknob
22. 22.🔄 Which design-process step is it to brainstorm many ideas? (a) Test (b) Imagine (c) Ask (d) Plan
23. 23.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) load it with coins
24. 24.🌉 In a suspension bridge, the main cables are in … (a) tension (b) no force (c) compression (d) friction
25. 25.True or false: to use a new load each time is good testing. (a) True (b) False
26. 26.📋 Criterion: the model bridge must hold at least 300 g. In the test it held 300 g. Does it meet the criterion? (a) No (b) Yes
27. 27.Which of these is an arch bridge? (a) the longest spans of all (b) good for short gaps (c) a curve under the deck (d) a log across a stream
28. 28.🏚️ Three solid model towers are made of the same material. Tower A is 20 cm tall on a 10 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 40 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
29. 29.🛠️ What does an engineer mainly do? (a) designs useful solutions (b) grows crops (c) only paints pictures (d) sells tickets
30. 30.🔄 What is the FIRST step of the engineering design process? (a) Test (b) Ask (c) Improve (d) Create
31. 31.📐 On a plan, 1 cm stands for 5 m. A real bridge is 10 m long. How long is it on the plan, in centimetres?
32. 32.Which of these is a beam bridge? (a) deck hangs from cables (b) a curve under the deck (c) a log across a stream (d) tall towers hold cables
33. 33.True or false: a pair of tweezers is a class 2 lever (load in the middle). (a) True (b) False
34. 34.📋 For a model bridge challenge, is “finish in 40 minutes” a constraint or a criterion? (a) a criterion (b) a constraint
35. 35.🔍 Which is the odd one out? (a) a tall bridge tower (b) a hanging lamp chain (c) a pillar under a roof (d) a squeezed spring
36. 36.🛞 Is friction helpful or a problem here: machine parts heating up? (a) a problem (b) helpful
37. 37.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
38. 38.🛠️ People need to go through a mountain. Which invention helps? (a) a train (b) a lift (c) a tunnel (d) a bridge
39. 39.True or false: coal is a renewable energy source. (a) False (b) True
40. 40.Which of these is an arch bridge? (a) the simplest bridge (b) good for short gaps (c) stones squeezed together (d) tall towers hold cables

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