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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 491 · 40 questions
TalentJR

Engineer's tip (Match the property to the job): Ask: what must it do — keep water out, bend, let light through, carry current or stay cool? Metals and graphite conduct electricity; rubber, plastic, dry wood, glass, pottery and cloth insulate. Pick the material whose main property fits the job.

NameDateTime takenScore ___ / 40
  1. 1.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🔍 Which is the odd one out? (a) aluminium (b) plastic (c) dry wood (d) cotton cloth
  3. 3.🧱 Which property matters most for a window pane? (a) waterproof (b) flexible (c) transparent (d) electrical conductor
  4. 4.🧱 Which material is best for a cooking pot handle? (a) copper (b) aluminium (c) iron (d) wood or plastic
  5. 5.🔍 Which is the odd one out? (a) steel (b) aluminium (c) graphite (d) dry wood
  6. 6.🧱 Which property matters most for a skipping rope? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  7. 7.True or false: an oven glove needs an electrical conductor. (a) True (b) False
  8. 8.Which of these needs a heat insulator? (a) a skipping rope (b) a switch contact (c) a window pane (d) an oven glove
  9. 9.🧱 Which property matters most for a boat hull? (a) waterproof (b) transparent (c) flexible (d) heat insulator
  10. 10.True or false: a boat hull needs a transparent material. (a) False (b) True
  11. 11.🧱 Which property matters most for a magnifier lens? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  12. 12.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.Which of these needs a flexible material? (a) a spectacle lens (b) a raincoat (c) a car windscreen (d) a yoga mat
  15. 15.🧱 Which property matters most for a car windscreen? (a) waterproof (b) transparent (c) flexible (d) electrical conductor
  16. 16.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.Which of these needs a waterproof material? (a) a roof sheet (b) a car seat belt (c) a magnifier lens (d) a switch contact
  18. 18.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  19. 19.🔍 Which is the odd one out? (a) iron (b) cotton cloth (c) copper (d) brass
  20. 20.True or false: a water tank needs a waterproof material. (a) True (b) False
  21. 21.🧱 Which material is best for the bars inside concrete? (a) rubber (b) steel (c) plastic (d) glass
  22. 22.🧱 Which material is best for a raincoat? (a) paper (b) cardboard (c) plastic-coated cloth (d) cotton wool
  23. 23.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  24. 24.True or false: a roof sheet needs a flexible material. (a) True (b) False
  25. 25.True or false: a car windscreen needs a waterproof material. (a) True (b) False
  26. 26.Which of these needs a heat insulator? (a) a car windscreen (b) a water tank (c) a spectacle lens (d) a cooking pot handle
  27. 27.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  28. 28.Which of these needs a flexible material? (a) a plug pin (b) a cooking pot handle (c) a car windscreen (d) a hair band
  29. 29.🧱 Which material is best for the core of an electric wire? (a) wood (b) rubber (c) glass (d) copper
  30. 30.🔍 Which is the odd one out? (a) clay pottery (b) plastic (c) cotton cloth (d) steel
  31. 31.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  32. 32.Which of these needs a waterproof material? (a) a switch contact (b) an oven glove (c) an umbrella cover (d) a tea flask lining
  33. 33.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  34. 34.True or false: a spectacle lens needs an electrical conductor. (a) True (b) False
  35. 35.🧱 Which property matters most for a switch contact? (a) waterproof (b) heat insulator (c) transparent (d) electrical conductor
  36. 36.True or false: a tea flask lining needs a transparent material. (a) True (b) False
  37. 37.True or false: an umbrella cover needs a waterproof material. (a) False (b) True
  38. 38.🧱 Which property matters most for a yoga mat? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  39. 39.🧱 Which property matters most for the core of a wire? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  40. 40.🧱 Which property matters most for a cooking pot handle? (a) transparent (b) flexible (c) heat insulator (d) waterproof

Answer key

  1. an insulator
  2. aluminium
  3. transparent
  4. wood or plastic
  5. dry wood
  6. flexible
  7. False
  8. an oven glove
  9. waterproof
  10. False
  11. transparent
  12. an insulator
  13. a conductor
  14. a yoga mat
  15. transparent
  16. a conductor
  17. a roof sheet
  18. an insulator
  19. cotton cloth
  20. True
  21. steel
  22. plastic-coated cloth
  23. an insulator
  24. False
  25. False
  26. a cooking pot handle
  27. an insulator
  28. a hair band
  29. copper
  30. steel
  31. a conductor
  32. an umbrella cover
  33. True
  34. False
  35. electrical conductor
  36. False
  37. True
  38. flexible
  39. electrical conductor
  40. heat insulator

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