Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 470 · 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 lever bar balances. The load is 40 N at 20 cm from the fulcrum. The effort is 40 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
2. 2.True or false: “pushes out on its ends” is an arch bridge. (a) True (b) False
3. 3.♻️ Reduce, reuse or recycle: plant in old tyres? (a) reuse (b) reduce (c) recycle
4. 4.🔄 Which design-process step is it to brainstorm many ideas? (a) Ask (b) Create (c) Imagine (d) Plan
5. 5.🔺 A beam bends under a load. Its top side is … (a) not affected (b) squeezed (compression) (c) stretched (tension) (d) floating
6. 6.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they are cheap (c) they stop shaking (d) they bend, not break
7. 7.Which of these needs a heat insulator? (a) an oven glove (b) a plug pin (c) a skipping rope (d) a spectacle lens
8. 8.Which job is sandpaper for? (a) check a shelf is level (b) make a hole in wood (c) smooth a rough edge (d) measure a long length
9. 9.🛠️ What does an engineer do before building anything? (a) builds at once (b) understands the problem (c) buys every material (d) paints the model
10. 10.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load ÷ effort (c) load + effort (d) load × effort
11. 11.Which of these is a beam bridge? (a) a rope bridge in hills (b) deck hangs from cables (c) good for short gaps (d) a curve under the deck
12. 12.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
13. 13.📋 For a model bridge challenge, is “float for 1 minute” a constraint or a criterion? (a) a criterion (b) a constraint
14. 14.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 110 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
15. 15.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
16. 16.Which of these is made by engineers? (a) a river (b) a railway track (c) a banyan tree (d) a waterfall
17. 17.🪝 A bucket weighing 280 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
18. 18.📐 A model car is drawn so that 1 cm stands for 30 cm. The car is 8 cm long in the drawing. How long is the real car, in centimetres?
19. 19.📐 How many metres are in 1 kilometre? (a) 10000 (b) 100 (c) 1000 (d) 10
20. 20.⚖️ Which class of lever is a seesaw? (a) class 2 (b) class 3 (c) class 1
21. 21.Which of these needs a transparent material? (a) a hair band (b) a raincoat (c) an oven glove (d) a window pane
22. 22.🪝 Fixed or movable pulley: which one needs effort = load? (a) a fixed pulley (b) a movable pulley
23. 23.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
24. 24.True or false: a microscope helps people see very tiny things. (a) True (b) False
25. 25.🏚️ 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
26. 26.📋 Constraint: the tower must be no taller than 70 cm. The team’s tower is 72 cm tall. Is it within the constraint? (a) No (b) Yes
27. 27.🏋️ Pushing a crate 6 m took 2880 J of work. What force was used, in newtons?
28. 28.🔍 Which is the odd one out? (a) a rainbow (b) a volcano (c) a coral reef (d) a dam
29. 29.⚖️ To lift a heavy rock with a crowbar more easily, push … (a) far from the fulcrum (b) on the fulcrum (c) on the rock (d) near the fulcrum
30. 30.Which job does a chemical engineer do? (a) designs a flyover (b) designs power lines (c) builds a website (d) runs a fertiliser plant
31. 31.🪢 A concrete slab weighing 14500 N rests evenly on 5 identical pillars. What compression force does each pillar carry, in newtons?
32. 32.🔄 In which step do engineers draw a labelled diagram? (a) Test (b) Plan (c) Ask (d) Improve
33. 33.🤝 Why do engineers work in teams? (a) to finish nothing (b) many skills and ideas (c) to work alone (d) to argue more
34. 34.🤝 In a design team, who keeps the design notes? (a) materials manager (b) team leader (c) builder (d) recorder
35. 35.📋 Criterion: the model bridge must hold at least 800 g. In the test it held 950 g. Does it meet the criterion? (a) Yes (b) No
36. 36.⚖️ What is the pivot point of a lever called? (a) the load (b) the effort (c) the axle (d) the fulcrum
37. 37.True or false: to put tools back after use is safe. (a) True (b) False
38. 38.🦺 What protects your eyes when sawing or drilling? (a) a cap (b) nothing (c) sunglasses (d) safety goggles
39. 39.📋 For a model bridge challenge, is “stand in a fan breeze” a constraint or a criterion? (a) a constraint (b) a criterion
40. 40.Which job does a civil engineer do? (a) designs a flyover (b) designs hearing aids (c) plans a power grid (d) keeps data safe online

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