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Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 66 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  2. 2.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  3. 3.True or false: to drive in a nail, use a spirit level. (a) False (b) True
  4. 4.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
  5. 5.🛞 The same block is pulled at a steady speed across four surfaces. The forces needed were: ice 1 N, a glass sheet 2 N, a wooden plank 3 N, a carpet 5 N. Which surface gave the most friction? (a) ice (b) a glass sheet (c) a wooden plank (d) a carpet
  6. 6.⚖️ Which class of lever is a wheelbarrow? (a) class 2 (b) class 1 (c) class 3
  7. 7.⚖️ A lever bar balances. The load is 280 N at ? cm from the fulcrum. The effort is 210 N at 40 cm from the fulcrum on the other side. What is the missing distance in centimetres?
  8. 8.🌉 Which bridge type: “a log across a stream”? (a) suspension bridge (b) arch bridge (c) beam bridge
  9. 9.True or false: to test it only once is poor testing. (a) False (b) True
  10. 10.💪 A bag has a mass of 7 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  11. 11.⚙️ Most simple machines make work easier by letting us … (a) stop all friction (b) use a smaller force (c) make new energy (d) switch off gravity
  12. 12.🏋️ A force of 370 N did 370 J of work. How many metres did the object move?
  13. 13.True or false: an umbrella cover needs a waterproof material. (a) True (b) False
  14. 14.🪝 A winch has a wheel of radius 10 cm and an axle of radius 5 cm. What effort on the wheel lifts a 200 N bucket on the axle, in newtons? (ideal)
  15. 15.🛞 Is friction helpful or a problem here: brakes stopping a cycle? (a) helpful (b) a problem
  16. 16.♻️ Reduce, reuse or recycle: fix a dripping tap? (a) reuse (b) recycle (c) reduce
  17. 17.⚖️ A seesaw balances. Arjun (420 N) sits 1 m from the pivot on one side; Meena (? N) sits 3 m from the pivot on the other side. What is the missing weight in newtons?
  18. 18.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
  19. 19.🪝 A bucket weighing 100 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
  20. 20.🔢 To follow the engineering design process, which is the FIRST step? (a) Create (b) Imagine (c) Improve (d) Ask
  21. 21.📐 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?
  22. 22.True or false: chalk on a gym bar gives less friction. (a) False (b) True
  23. 23.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
  24. 24.💪 Which force is at work: a river flows downhill? (a) friction (b) magnetic force (c) gravity (d) muscular force
  25. 25.🏋️ A machine lifts a load of 300 N when you push with 150 N. What is its mechanical advantage (MA)?
  26. 26.🦺 What protects your eyes when sawing or drilling? (a) a cap (b) nothing (c) sunglasses (d) safety goggles
  27. 27.🌉 Which bridge type: “a rope bridge in hills”? (a) beam bridge (b) suspension bridge (c) arch bridge
  28. 28.🔧 Which tool would you use to cut a wooden plank? (a) pliers (b) a spirit level (c) a saw (d) a protractor
  29. 29.🪝 A winch has a wheel of radius 4 cm and an axle of radius 2 cm. What effort on the wheel lifts a 400 N bucket on the axle, in newtons? (ideal)
  30. 30.📐 A beam is 670 cm long. How long is it in metres? =
  31. 31.⚖️ Along a straight bar, measured from the left end, the effort is at 30 cm, the fulcrum at 70 cm and the load at 40 cm. Which class of lever is it? (a) class 1 (b) class 2 (c) class 3
  32. 32.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  33. 33.True or false: a car windscreen needs a flexible material. (a) True (b) False
  34. 34.True or false: to list the materials is the Create step. (a) True (b) False
  35. 35.🤝 Is it good or poor teamwork to agree before changing? (a) good teamwork (b) poor teamwork
  36. 36.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) adding cross bracing (c) using flexible joints (d) using a heavy roof
  37. 37.True or false: a chemical engineer designs a gearbox. (a) True (b) False
  38. 38.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a fixed pulley (b) a movable pulley
  39. 39.🪝 A winch has a wheel of radius 12 cm and an axle of radius 3 cm. What effort on the wheel lifts a 120 N bucket on the axle, in newtons? (ideal)
  40. 40.True or false: a seashell is found in nature. (a) False (b) True

Answer key

  1. True
  2. less safe
  3. False
  4. through a distance
  5. a carpet
  6. class 2
  7. 30
  8. beam bridge
  9. True
  10. 70
  11. use a smaller force
  12. 1
  13. True
  14. 100
  15. helpful
  16. reduce
  17. 140
  18. an early test model
  19. 100
  20. Ask
  21. 14
  22. False
  23. good testing
  24. gravity
  25. 2
  26. safety goggles
  27. suspension bridge
  28. a saw
  29. 200
  30. 6.7
  31. class 2
  32. a conductor
  33. False
  34. False
  35. good teamwork
  36. using a heavy roof
  37. False
  38. a movable pulley
  39. 30
  40. True

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