Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 7 · 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.True or false: a banyan tree is found in nature. (a) False (b) True
2. 2.True or false: “pushes out on its ends” is a suspension bridge. (a) False (b) True
3. 3.⚖️ A seesaw balances. Asha (540 N) sits 3 m from the pivot on one side; Kabir (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
4. 4.🔢 To follow the engineering design process, what comes right after “Test”? (a) Plan (b) Create (c) Ask (d) Improve
5. 5.🏋️ Work is done when a force moves something … (a) very slowly (b) without moving it (c) through a distance (d) only upwards
6. 6.True or false: to hide a mistake is poor teamwork. (a) True (b) False
7. 7.Which of these is caused by magnetic force? (a) shoes grip the floor (b) a compass needle turns (c) a river flows downhill (d) lifting a school bag
8. 8.🏋️ A machine lifts a load of 600 N when you push with 200 N. What is its mechanical advantage (MA)?
9. 9.True or false: to change only one thing is good testing. (a) True (b) False
10. 10.🪢 Tension or compression: a suspension cable? (a) tension (b) compression
11. 11.Which of these is reduce (use less)? (a) use a jar as a pen stand (b) melt glass into new jars (c) pulp old paper (d) print on both sides
12. 12.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) False (b) True
13. 13.💪 A force is a … (a) type of sound (b) kind of colour (c) push or a pull (d) unit of time
14. 14.True or false: natural gas is a renewable energy source. (a) True (b) False
15. 15.⚖️ A seesaw balances. Ravi (440 N) sits 1 m from the pivot on one side; Meena (110 N) sits ? m from the pivot on the other side. What is the missing distance in metres?
16. 16.True or false: to smooth a rough edge, use sandpaper. (a) True (b) False
17. 17.💪 In a tug of war, one team pulls right with 25 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
18. 18.💪 A box weighs 530 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
19. 19.📋 Criterion: the model bridge must hold at least 400 g. In the test it held 300 g. Does it meet the criterion? (a) No (b) Yes
20. 20.True or false: a movable pulley needs effort = load. (a) True (b) False
21. 21.🦺 What protects your eyes when sawing or drilling? (a) a cap (b) nothing (c) sunglasses (d) safety goggles
22. 22.⚖️ Which class of lever is a pair of kitchen tongs? (a) class 3 (b) class 2 (c) class 1
23. 23.⚖️ Along a straight bar, measured from the left end, the effort is at 100 cm, the fulcrum at 70 cm and the load at 30 cm. Which class of lever is it? (a) class 3 (b) class 2 (c) class 1
24. 24.True or false: to turn a screw, use a saw. (a) True (b) False
25. 25.Which job is a screwdriver for? (a) cut a wooden plank (b) drive in a nail (c) turn a screw (d) make a hole in wood
26. 26.🔍 Which is the odd one out? (a) a volcano (b) a lift (c) a water filter (d) a mobile phone
27. 27.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
28. 28.📋 Constraint: the tower must be no taller than 50 cm. The team’s tower is 52 cm tall. Is it within the constraint? (a) No (b) Yes
29. 29.Which of these uses triangles? (a) a fort gateway (b) a plank over a drain (c) a crane arm (d) a planetarium roof
30. 30.⚖️ What is the pivot point of a lever called? (a) the axle (b) the fulcrum (c) the effort (d) the load
31. 31.⚖️ A lever balances when … (a) the bar is short (b) the fulcrum moves (c) both weights are equal (d) turning effects match
32. 32.⚖️ In a class 1 lever, what is in the middle? (a) the effort (b) the load (c) nothing (d) the fulcrum
33. 33.True or false: a lintel over a door uses an arch. (a) False (b) True
34. 34.🧱 Which property matters most for an oven glove? (a) waterproof (b) transparent (c) flexible (d) heat insulator
35. 35.🌉 Which bridge type: “cables tied down at ends”? (a) arch bridge (b) beam bridge (c) suspension bridge
36. 36.🛞 More or less friction: a smooth steel slide? (a) more friction (b) less friction
37. 37.🔄 After testing, a design does not work well. What comes next? (a) Ask (b) Improve (c) Imagine (d) give up
38. 38.True or false: to measure an angle, use a protractor. (a) False (b) True
39. 39.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
40. 40.🔺 A frame shaped like a triangle is made of straws joined by loose pins, with 0 corner-to-corner braces. Is it rigid or wobbly? (a) wobbly (b) rigid

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