Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 876 · 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.♻️ Is sunlight a renewable or a non-renewable energy source? (a) non-renewable (b) renewable
2. 2.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) joule (J) (d) watt hour
3. 3.🌉 Which bridge type: “a log across a stream”? (a) beam bridge (b) suspension bridge (c) arch bridge
4. 4.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
5. 5.⚙️ Which simple machine is a nutcracker? (a) inclined plane (b) wheel and axle (c) wedge (d) lever
6. 6.🛞 Is friction helpful or a problem here: striking a matchstick? (a) a problem (b) helpful
7. 7.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
8. 8.🛠️ People need to make water safe to drink. Which invention helps? (a) a microscope (b) a dam (c) a solar panel (d) a water filter
9. 9.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
10. 10.💪 Which force is at work: a thrown ball comes down? (a) gravity (b) muscular force (c) magnetic force (d) friction
11. 11.Which of these happens in the Improve step? (a) list the materials (b) redesign after testing (c) dream up possible fixes (d) make a prototype
12. 12.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 3 N, a wooden plank 5 N, a carpet 9 N, ice 1 N. Which surface gave the most friction? (a) a glass sheet (b) ice (c) a wooden plank (d) a carpet
13. 13.📐 On a plan, 1 cm stands for 20 m. A wall is 12 cm long on the plan. How long is the real wall, in metres?
14. 14.💪 Which force is at work: rubbing hands warms them? (a) magnetic force (b) muscular force (c) friction (d) gravity
15. 15.True or false: to give kind feedback is poor teamwork. (a) False (b) True
16. 16.🔺 A frame shaped like a pentagon is made of straws joined by loose pins, with 2 corner-to-corner braces. Is it rigid or wobbly? (a) rigid (b) wobbly
17. 17.True or false: a movable pulley halves the effort. (a) True (b) False
18. 18.🪢 Tension or compression: a swing chain? (a) compression (b) tension
19. 19.Which of these is reduce (use less)? (a) turn plastic into tiles (b) melt cans into new cans (c) pulp old paper (d) print on both sides
20. 20.Which of these happens in the Create step? (a) dream up possible fixes (b) fix the weak part (c) pick the build order (d) follow the plan to build
21. 21.Which of these is a beam bridge? (a) tall towers hold cables (b) the longest spans of all (c) stones squeezed together (d) a log across a stream
22. 22.🦺 How should you carry scissors? (a) points up, open (b) while running (c) by the blades (d) points down, closed
23. 23.What does the builder do? (a) keeps the team on track (b) puts the model together (c) runs the tests (d) keeps the design notes
24. 24.⚖️ A seesaw balances. Kabir (? N) sits 3 m from the pivot on one side; Arjun (300 N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
25. 25.🌉 Which bridge type: “pushes out on its ends”? (a) beam bridge (b) arch bridge (c) suspension bridge
26. 26.True or false: to redesign after testing is the Plan step. (a) True (b) False
27. 27.True or false: a microscope helps people reach a top floor fast. (a) False (b) True
28. 28.⚖️ Going along a lever from one end to the other, the order is: load, effort, fulcrum. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
29. 29.⚖️ A seesaw balances. Ravi (110 N) sits 1 m from the pivot on one side; Asha (? N) sits 1 m from the pivot on the other side. What is the missing weight in newtons?
30. 30.🛞 More or less friction: a wet tiled floor? (a) more friction (b) less friction
31. 31.Which of these uses a beam? (a) a curved stone doorway (b) a shelf on two brackets (c) a roof truss (d) a fort gateway
32. 32.Which of these needs a heat insulator? (a) a tea flask lining (b) a boat hull (c) a car seat belt (d) a hair band
33. 33.Which of these is found in nature? (a) a bicycle (b) a satellite (c) a coral reef (d) a dam
34. 34.🔍 Which is the odd one out? (a) stacking loose bricks (b) making brittle joints (c) fitting rubber base pads (d) building tall and narrow
35. 35.🪝 A bucket weighing 230 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
36. 36.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: a glass sheet 6 N, a wooden plank 9 N, a carpet 11 N, ice 3 N. How many newtons more were needed on a carpet than on ice?
37. 37.🔍 Which is the odd one out? (a) play near a moving drill (b) put tools back after use (c) carry scissors closed (d) wear safety goggles
38. 38.⚖️ What is the pivot point of a lever called? (a) the axle (b) the effort (c) the load (d) the fulcrum
39. 39.⚖️ Along a straight bar, measured from the left end, the effort is at 40 cm, the fulcrum at 20 cm and the load at 30 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
40. 40.🔍 Which is the odd one out? (a) a squeezed spring (b) a tow rope on a car (c) a brick at a wall base (d) a table leg

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