Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 991 · 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 jar lid? (a) wheel and axle (b) wedge (c) pulley (d) screw
2. 2.🛞 More or less friction: chalk on a gym bar? (a) less friction (b) more friction
3. 3.⚖️ Which class of lever is a bottle opener? (a) class 1 (b) class 3 (c) class 2
4. 4.⚖️ Going along a lever from one end to the other, the order is: effort, fulcrum, load. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
5. 5.♻️ Is coal a renewable or a non-renewable energy source? (a) renewable (b) non-renewable
6. 6.True or false: closing a drawer is a pull. (a) True (b) False
7. 7.🧱 Which material is best for a window pane? (a) wood (b) brick (c) steel (d) glass
8. 8.🛠️ A scientist asks “why does it happen?”. An engineer mostly asks … (a) what is for lunch? (b) why is the sky blue? (c) who won the match? (d) how can we build it?
9. 9.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they stop shaking (c) they are cheap (d) they bend, not break
10. 10.🌉 What holds up a long beam bridge in the middle? (a) nothing (b) cables only (c) balloons (d) piers
11. 11.🌉 Which bridge type: “cables tied down at ends”? (a) suspension bridge (b) beam bridge (c) arch bridge
12. 12.True or false: to record every result is poor testing. (a) True (b) False
13. 13.🛞 Friction acts … (a) with the motion (b) against the motion (c) only on ice (d) only upwards
14. 14.True or false: to change only one thing is good testing. (a) False (b) True
15. 15.⚙️ How many simple machines are there in the usual list? (a) 12 (b) 3 (c) 6 (d) 10
16. 16.🌉 A beam bridge 400 m long is split by piers into 8 equal spans. How long is each span, in metres?
17. 17.📋 Criteria are … (a) goals a design must meet (b) the team names (c) the limits on money (d) the tools you use
18. 18.🧱 Which material is best for the bars inside concrete? (a) steel (b) glass (c) rubber (d) plastic
19. 19.🤝 In a design team, who tracks what is used up? (a) materials manager (b) recorder (c) tester (d) builder
20. 20.🤝 In a design team, who collects the supplies? (a) builder (b) tester (c) materials manager (d) team leader
21. 21.💪 A force is a … (a) type of sound (b) unit of time (c) push or a pull (d) kind of colour
22. 22.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) leaving out steel bars (c) making brittle joints (d) having a wide base
23. 23.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) aerospace (b) civil (c) chemical (d) computer
24. 24.True or false: a rough doormat gives less friction. (a) False (b) True
25. 25.🌉 Which bridge type: “stones squeezed together”? (a) arch bridge (b) suspension bridge (c) beam bridge
26. 26.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 40 cm wide base, tower B is 40 cm tall on a 20 cm base and tower C is 20 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
27. 27.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a criterion (b) a constraint
28. 28.True or false: to cut a wooden plank, use a saw. (a) False (b) True
29. 29.🔺 Which strong shape does a lintel over a door use? (a) triangle (b) dome (c) arch (d) beam
30. 30.🛞 Is friction helpful or a problem here: machine parts heating up? (a) a problem (b) helpful
31. 31.📐 On a plan, 1 cm stands for 5 m. A wall is 11 cm long on the plan. How long is the real wall, in metres?
32. 32.🪝 A bucket weighing 290 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
33. 33.📐 A model car is drawn so that 1 cm stands for 20 cm. The car is 5 cm long in the drawing. How long is the real car, in centimetres?
34. 34.🛠️ Is a banyan tree made by engineers or found in nature? (a) found in nature (b) made by engineers
35. 35.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
36. 36.⚖️ A lever bar balances. The load is ? N at 20 cm from the fulcrum. The effort is 60 N at 50 cm from the fulcrum on the other side. What is the missing force in newtons?
37. 37.⚖️ A seesaw balances. Asha (? N) sits 1 m from the pivot on one side; Zoya (120 N) sits 4 m from the pivot on the other side. What is the missing weight in newtons?
38. 38.🪢 Tension or compression: a squeezed spring? (a) tension (b) compression
39. 39.🔍 Which is the odd one out? (a) cotton cloth (b) copper (c) clay pottery (d) plastic
40. 40.📋 Constraint: the tower must be no taller than 80 cm. The team’s tower is 76 cm tall. Is it within the constraint? (a) Yes (b) No

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