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Engineering Worksheet: Final Test

Engineering lesson 24: Final engineering test · Set 71 · 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 computer engineer keeps data safe online. (a) False (b) True
  2. 2.Which of these is found in nature? (a) a bridge (b) a bicycle (c) a satellite (d) a coral reef
  3. 3.Which job does an electrical engineer do? (a) writes app software (b) designs satellites (c) designs power lines (d) designs a metro tunnel
  4. 4.🤝 Why do engineers work in teams? (a) to finish nothing (b) to work alone (c) to argue more (d) many skills and ideas
  5. 5.🛞 More or less friction: a grippy rubber sole? (a) less friction (b) more friction
  6. 6.🪢 A sign weighing 280 N hangs from 4 identical vertical ropes that share the load equally. What is the tension in each rope, in newtons?
  7. 7.Which of these happens in the Ask step? (a) redesign after testing (b) check it against goals (c) pick the build order (d) define the problem
  8. 8.🪝 A well winch has a handle (wheel) of radius 35 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
  9. 9.⚖️ Along a straight bar, measured from the left end, the effort is at 20 cm, the fulcrum at 30 cm and the load at 40 cm. Which class of lever is it? (a) class 2 (b) class 3 (c) class 1
  10. 10.Which of these needs an electrical conductor? (a) a raincoat (b) a skipping rope (c) a plug pin (d) a spectacle lens
  11. 11.True or false: a broom when sweeping is a class 3 lever (effort in the middle). (a) False (b) True
  12. 12.♻️ A family used to throw away 9 plastic bags a week. They now carry cloth bags. How many plastic bags do they save in 6 weeks?
  13. 13.True or false: a stretched rubber band is in compression (pushed). (a) False (b) True
  14. 14.True or false: pushing a trolley is a push. (a) True (b) False
  15. 15.Which of these is a wedge? (a) a knife edge (b) a playground slide (c) a crane hook block (d) a nut and bolt
  16. 16.True or false: an electrical engineer runs a fertiliser plant. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) aluminium (b) copper (c) iron (d) plastic
  18. 18.🔍 Which is the odd one out? (a) a seesaw (b) a claw hammer on a nail (c) a bottle opener (d) a crane hook block
  19. 19.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  20. 20.♻️ Reduce, reuse or recycle: buy less packaging? (a) reuse (b) recycle (c) reduce
  21. 21.📐 A model car is drawn so that 1 cm stands for 10 cm. The car is 6 cm long in the drawing. How long is the real car, in centimetres?
  22. 22.🔍 Which is the odd one out? (a) a bridge (b) a bicycle (c) a dam (d) a river
  23. 23.📐 Why do engineers use scale drawings? (a) big things fit on paper (b) to hide sizes (c) to make them pretty (d) to save ink only
  24. 24.True or false: to record every result is poor testing. (a) True (b) False
  25. 25.♻️ A project report has 52 pages. How many sheets of paper are needed if it is printed on both sides of each sheet?
  26. 26.True or false: a smooth steel slide gives more friction. (a) False (b) True
  27. 27.True or false: to measure its performance is the Ask step. (a) True (b) False
  28. 28.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  29. 29.True or false: a tyre with deep treads gives less friction. (a) True (b) False
  30. 30.⚖️ A lever bar balances. The load is 420 N at 20 cm from the fulcrum. The effort is 140 N at ? cm from the fulcrum on the other side. What is the missing distance in centimetres?
  31. 31.🔍 Which is the odd one out? (a) a wet tiled floor (b) skating on ice (c) a grippy rubber sole (d) oil on a squeaky hinge
  32. 32.True or false: sunlight is a renewable energy source. (a) False (b) True
  33. 33.True or false: to redesign after testing is the Improve step. (a) False (b) True
  34. 34.What does the builder do? (a) cuts and joins parts (b) keeps the design notes (c) keeps the team on track (d) writes down results
  35. 35.🔄 Which design-process step is it to measure its performance? (a) Test (b) Imagine (c) Improve (d) Plan
  36. 36.⚖️ A lever bar balances. The load is 140 N at 50 cm from the fulcrum. The effort is ? N at 20 cm from the fulcrum on the other side. What is the missing force in newtons?
  37. 37.🔺 One side of a straw bridge is a row of 14 triangles standing point-up and point-down in turn, each sharing a side with the next. How many straws does it use?
  38. 38.🧱 Which property matters most for a car windscreen? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  39. 39.Which of these is in compression (pushed)? (a) a tug of war rope (b) a squeezed spring (c) a tent guy rope (d) a tow rope on a car
  40. 40.🧑‍🔧 Which branch of engineering works on aeroplanes and rockets? (a) chemical (b) computer (c) civil (d) aerospace

Answer key

  1. True
  2. a coral reef
  3. designs power lines
  4. many skills and ideas
  5. more friction
  6. 70
  7. define the problem
  8. 7
  9. class 1
  10. a plug pin
  11. True
  12. 54
  13. False
  14. True
  15. a knife edge
  16. False
  17. plastic
  18. a crane hook block
  19. a push
  20. reduce
  21. 60
  22. a river
  23. big things fit on paper
  24. False
  25. 26
  26. False
  27. False
  28. a pull
  29. False
  30. 60
  31. a grippy rubber sole
  32. True
  33. True
  34. cuts and joins parts
  35. Test
  36. 350
  37. 29
  38. transparent
  39. a squeezed spring
  40. aerospace

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