Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 89 · 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 is the odd one out? (a) clay pottery (b) rubber (c) copper (d) plastic
2. 2.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) load it with coins
3. 3.🪢 A stage stands on 7 identical legs and each leg is squeezed with 575 N. What is the total load on the stage, in newtons?
4. 4.True or false: to help a stuck teammate is poor teamwork. (a) False (b) True
5. 5.True or false: a nutcracker is a class 2 lever (load in the middle). (a) True (b) False
6. 6.Which of these needs a waterproof material? (a) a switch contact (b) a roof sheet (c) a spectacle lens (d) a hair band
7. 7.🔢 To follow the engineering design process, which comes first: “Improve” or “Imagine”? (a) Imagine (b) Improve
8. 8.⚖️ Along a straight bar, measured from the left end, the effort is at 60 cm, the fulcrum at 40 cm and the load at 10 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
9. 9.🦺 In the workshop, is it safe to use a cracked tool? (a) safe (b) not safe
10. 10.💪 Which can a force NOT do? (a) stop it moving (b) change its shape (c) change its colour (d) start it moving
11. 11.What does the builder do? (a) cuts and joins parts (b) keeps the team on track (c) keeps the design notes (d) tracks what is used up
12. 12.💪 A cart is pulled to the right with 40 N and to the left with 50 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
13. 13.📋 Your team’s budget is ₹86. You must buy one roll of tape for ₹5. Straws cost ₹3 each. What is the greatest number of straws you can buy?
14. 14.♻️ A school bench is made from 350 recycled plastic bottles. How many benches can be made from 2800 bottles?
15. 15.True or false: to hide a mistake is poor teamwork. (a) False (b) True
16. 16.True or false: to record every result is good testing. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) carry scissors closed (b) cut towards your hand (c) let adults use hot glue (d) cut away from your body
18. 18.🧪 A paper bridge was tested three times. It held 180 g, 150 g and 210 g. What is the mean (average) load it held, in grams?
19. 19.🪢 Tension or compression: a squeezed spring? (a) tension (b) compression
20. 20.🪝 A load of 960 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
21. 21.📋 Constraint: the tower must be no taller than 70 cm. The team’s tower is 64 cm tall. Is it within the constraint? (a) Yes (b) No
22. 22.True or false: a lift helps people store water for summer. (a) True (b) False
23. 23.True or false: a pair of kitchen tongs is a class 1 lever (fulcrum in the middle). (a) False (b) True
24. 24.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a fixed pulley (b) a movable pulley
25. 25.♻️ Is biogas from waste a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
26. 26.🔢 To follow the engineering design process, which is the FIRST step? (a) Create (b) Ask (c) Imagine (d) Plan
27. 27.♻️ Reduce, reuse or recycle: pulp old paper? (a) reuse (b) reduce (c) recycle
28. 28.⚖️ Which class of lever is a pair of scissors? (a) class 2 (b) class 1 (c) class 3
29. 29.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 160 cm tall on a 20 cm base and tower C is 60 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
30. 30.♻️ Reduce, reuse or recycle: turn plastic into tiles? (a) recycle (b) reuse (c) reduce
31. 31.🔍 Which is the odd one out? (a) be under 30 cm tall (b) float for 1 minute (c) keep ice for 1 hour (d) roll at least 2 metres
32. 32.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
33. 33.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) False (b) True
34. 34.🔺 Which strong shape does a planetarium roof use? (a) dome (b) triangle (c) beam (d) arch
35. 35.⚖️ A seesaw balances. Asha (600 N) sits ? m from the pivot on one side; Kabir (600 N) sits 3 m from the pivot on the other side. What is the missing distance in metres?
36. 36.Which of these happens in the Imagine step? (a) find the limits (b) define the problem (c) list the materials (d) brainstorm many ideas
37. 37.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
38. 38.⚖️ A lever bar balances. The load is 80 N at ? cm from the fulcrum. The effort is 100 N at 40 cm from the fulcrum on the other side. What is the missing distance in centimetres?
39. 39.True or false: a window pane needs a transparent material. (a) True (b) False
40. 40.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 10 cm and the load at 20 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1

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