Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 505 · 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 of these is reduce (use less)? (a) use a jar as a pen stand (b) buy less packaging (c) give old books away (d) refill a water bottle
2. 2.🌉 A beam bridge 75 m long rests on the two river banks and on piers in between, making equal spans of 25 m. How many piers are there?
3. 3.True or false: a movable pulley is on a flagpole top. (a) False (b) True
4. 4.🪢 Tension is a force that … (a) heats things (b) turns things (c) pushes or squeezes (d) pulls or stretches
5. 5.📋 Criterion: the model bridge must hold at least 1000 g. In the test it held 1100 g. Does it meet the criterion? (a) No (b) Yes
6. 6.Which of these is a lever? (a) a door stopper (b) a knife edge (c) a round doorknob (d) a claw hammer on a nail
7. 7.Which of these needs an electrical conductor? (a) a plug pin (b) a raincoat (c) an umbrella cover (d) a tea flask lining
8. 8.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) building tall and narrow (c) using flexible joints (d) using a heavy roof
9. 9.🧱 Which material is best for a cooking pot handle? (a) copper (b) aluminium (c) iron (d) wood or plastic
10. 10.⚖️ A lever bar balances. The load is 80 N at 40 cm from the fulcrum. The effort is 80 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
11. 11.Which of these is a screw? (a) a chisel (b) a door stopper (c) a claw hammer on a nail (d) a screw jack
12. 12.True or false: a waterfall is found in nature. (a) True (b) False
13. 13.📋 For a model bridge challenge, is “be under 30 cm tall” a constraint or a criterion? (a) a criterion (b) a constraint
14. 14.🛞 More or less friction: chalk on a gym bar? (a) less friction (b) more friction
15. 15.🏋️ A force of 60 N pushes a cart 10 m along the floor. How much work is done, in joules?
16. 16.True or false: to fix the weak part is the Imagine step. (a) True (b) False
17. 17.Which need does a water filter meet? (a) store water for summer (b) talk to someone far away (c) make water safe to drink (d) reach a top floor fast
18. 18.🤝 In a design team, who collects the supplies? (a) materials manager (b) recorder (c) builder (d) tester
19. 19.⚖️ A seesaw balances. Kabir (300 N) sits 3 m from the pivot on one side; Asha (300 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
20. 20.⚖️ A seesaw balances. Asha (140 N) sits ? m from the pivot on one side; Meena (420 N) sits 1 m from the pivot on the other side. What is the missing distance in metres?
21. 21.What does the team leader do? (a) keeps the design notes (b) keeps the team on track (c) cuts and joins parts (d) puts the model together
22. 22.📐 On a plan, 1 cm stands for 10 m. A real bridge is 140 m long. How long is it on the plan, in centimetres?
23. 23.Which job is pliers for? (a) measure a long length (b) check a shelf is level (c) grip and bend wire (d) measure an angle
24. 24.🪝 A wheel and axle is a big wheel fixed to … (a) a smaller rod (axle) (b) a sharp wedge (c) a loose rope (d) a flat ramp
25. 25.🤝 In a design team, who writes down results? (a) tester (b) builder (c) recorder (d) team leader
26. 26.🏋️ Pushing a crate 6 m took 1860 J of work. What force was used, in newtons?
27. 27.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 2 N, a wooden plank 5 N, a carpet 7 N, sandpaper 10 N. Which surface gave the least friction? (a) a wooden plank (b) a carpet (c) sandpaper (d) a glass sheet
28. 28.🔧 Which tool would you use to check a shelf is level? (a) a protractor (b) a spirit level (c) a hammer (d) a saw
29. 29.📐 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?
30. 30.Which need does a train meet? (a) talk to someone far away (b) carry many people far (c) keep food fresh longer (d) cross a wide river
31. 31.True or false: a biomedical engineer designs knee implants. (a) True (b) False
32. 32.♻️ Is flowing river water a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
33. 33.Which of these happens in the Plan step? (a) redesign after testing (b) find the limits (c) draw a labelled diagram (d) measure its performance
34. 34.What does the tester do? (a) writes down results (b) shares out the jobs (c) checks the goals are met (d) keeps the design notes
35. 35.🌉 Which bridge type: “the simplest bridge”? (a) beam bridge (b) suspension bridge (c) arch bridge
36. 36.True or false: a bridge pier is in tension (pulled). (a) True (b) False
37. 37.Which of these is a suspension bridge? (a) good for short gaps (b) tall towers hold cables (c) stones squeezed together (d) the simplest bridge
38. 38.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
39. 39.True or false: a chisel is a wedge. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) record every result (d) test it only once

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