Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 220 · 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.📋 For a model bridge challenge, is “float for 1 minute” a constraint or a criterion? (a) a criterion (b) a constraint
2. 2.📋 Criterion: the model bridge must hold at least 400 g. In the test it held 450 g. Does it meet the criterion? (a) No (b) Yes
3. 3.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 13 cm long in the drawing. How long is the real car, in centimetres?
4. 4.📐 How many centimetres are in 1 metre? (a) 10 (b) 60 (c) 100 (d) 1000
5. 5.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load + effort (c) effort ÷ load (d) load × effort
6. 6.⚖️ A seesaw balances. Kabir (130 N) sits ? m from the pivot on one side; Asha (390 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
7. 7.🔺 One side of a straw bridge is a row of 2 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
8. 8.True or false: a movable pulley rises with the load. (a) False (b) True
9. 9.🔢 To follow the engineering design process, what comes right after “Test”? (a) Plan (b) Imagine (c) Ask (d) Improve
10. 10.🌉 A beam bridge 90 m long is split by piers into 3 equal spans. How long is each span, in metres?
11. 11.🌉 Which bridge type: “cables tied down at ends”? (a) suspension bridge (b) beam bridge (c) arch bridge
12. 12.🛞 More or less friction: a tyre with deep treads? (a) more friction (b) less friction
13. 13.📐 Why do engineers use scale drawings? (a) to make them pretty (b) to save ink only (c) big things fit on paper (d) to hide sizes
14. 14.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) record every result (d) skip writing results
15. 15.🌉 In a suspension bridge, the main cables are in … (a) no force (b) compression (c) tension (d) friction
16. 16.True or false: a skipping rope needs a flexible material. (a) True (b) False
17. 17.⚖️ Along a straight bar, measured from the left end, the effort is at 70 cm, the fulcrum at 30 cm and the load at 10 cm. Which class of lever is it? (a) class 3 (b) class 1 (c) class 2
18. 18.🔢 To follow the engineering design process, which comes first: “Improve” or “Ask”? (a) Ask (b) Improve
19. 19.🧑‍🔧 Which branch of engineering designs machines with moving parts? (a) biomedical (b) civil (c) mechanical (d) chemical
20. 20.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) chemical (b) civil (c) aerospace (d) computer
21. 21.True or false: a tall bridge tower is in tension (pulled). (a) False (b) True
22. 22.Which of these uses a beam? (a) a lintel over a door (b) a round palace roof (c) an electric pylon (d) a bicycle frame
23. 23.🏋️ Pushing a crate 2 m took 500 J of work. What force was used, in newtons?
24. 24.True or false: a tow rope on a car is in tension (pulled). (a) False (b) True
25. 25.True or false: to laugh at ideas is poor teamwork. (a) False (b) True
26. 26.📋 For a model bridge challenge, is “lift a cup of water” a constraint or a criterion? (a) a constraint (b) a criterion
27. 27.🪢 A concrete slab weighing 14400 N rests evenly on 6 identical pillars. What compression force does each pillar carry, in newtons?
28. 28.🧱 Which material is best for a raincoat? (a) cardboard (b) cotton wool (c) paper (d) plastic-coated cloth
29. 29.True or false: to guess, do not measure is poor testing. (a) False (b) True
30. 30.🪢 A stage stands on 5 identical legs and each leg is squeezed with 775 N. What is the total load on the stage, in newtons?
31. 31.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) adding cross bracing (c) raising heavy tanks high (d) using flexible joints
32. 32.🔍 Which is the odd one out? (a) tie back long hair (b) let adults use hot glue (c) put tools back after use (d) leave tools on the floor
33. 33.⚖️ A seesaw balances. Ravi (110 N) sits 2 m from the pivot on one side; Meena (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
34. 34.🔍 Which is the odd one out? (a) be under 30 cm tall (b) float for 1 minute (c) keep ice for 1 hour (d) stand in a fan breeze
35. 35.🔍 Which is the odd one out? (a) a bridge (b) a bicycle (c) a water filter (d) a waterfall
36. 36.🌉 Which bridge type: “a flat deck on piers”? (a) arch bridge (b) beam bridge (c) suspension bridge
37. 37.True or false: a bridge pier is in compression (pushed). (a) True (b) False
38. 38.True or false: to cut towards your hand is safe. (a) True (b) False
39. 39.🪝 More rope sections holding a load means … (a) the load floats (b) no change (c) less effort needed (d) more effort needed
40. 40.🛠️ People need to store water for summer. Which invention helps? (a) a lift (b) a dam (c) a microscope (d) a bridge

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