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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 461 · 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 graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.🧱 Which property matters most for a tea flask lining? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  3. 3.True or false: a yoga mat needs a flexible material. (a) True (b) False
  4. 4.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.Which of these needs a transparent material? (a) a switch contact (b) a car seat belt (c) a magnifier lens (d) a skipping rope
  6. 6.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  7. 7.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.Which of these needs a flexible material? (a) a plug pin (b) a switch contact (c) a tea flask lining (d) a skipping rope
  9. 9.True or false: the core of a wire needs a transparent material. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) iron (b) plastic (c) cotton cloth (d) rubber
  11. 11.Which of these needs a waterproof material? (a) an oven glove (b) a window pane (c) a switch contact (d) a water tank
  12. 12.🧱 Which property matters most for a raincoat? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
  13. 13.🔍 Which is the odd one out? (a) iron (b) graphite (c) cotton cloth (d) steel
  14. 14.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) iron (c) wood or plastic (d) copper
  15. 15.True or false: a spectacle lens needs an electrical conductor. (a) True (b) False
  16. 16.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.Which of these needs a heat insulator? (a) a raincoat (b) a cooking pot handle (c) a hair band (d) a yoga mat
  18. 18.Which of these needs a waterproof material? (a) a hair band (b) a cooking pot handle (c) an umbrella cover (d) a spectacle lens
  19. 19.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cardboard (c) paper (d) cotton wool
  20. 20.Which of these needs a transparent material? (a) a window pane (b) a roof sheet (c) a skipping rope (d) a yoga mat
  21. 21.🔍 Which is the odd one out? (a) dry wood (b) brass (c) glass (d) rubber
  22. 22.🧱 Which material is best for the core of an electric wire? (a) glass (b) wood (c) rubber (d) copper
  23. 23.🧱 Which property matters most for a boat hull? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  24. 24.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.True or false: a switch contact needs an electrical conductor. (a) True (b) False
  26. 26.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  27. 27.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  28. 28.🧱 Which property matters most for a plug pin? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  29. 29.Which of these needs a waterproof material? (a) a yoga mat (b) a magnifier lens (c) a raincoat (d) a car windscreen
  30. 30.Which of these needs a flexible material? (a) a car windscreen (b) a cooking pot handle (c) a magnifier lens (d) a yoga mat
  31. 31.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  33. 33.🧱 Which property matters most for a car seat belt? (a) heat insulator (b) transparent (c) electrical conductor (d) flexible
  34. 34.Which of these needs a waterproof material? (a) a plug pin (b) a roof sheet (c) a car seat belt (d) a yoga mat
  35. 35.🧱 Which material is best for a window pane? (a) steel (b) wood (c) glass (d) brick
  36. 36.🧱 Which material is best for the bars inside concrete? (a) glass (b) steel (c) plastic (d) rubber
  37. 37.🧱 Which property matters most for a window pane? (a) waterproof (b) electrical conductor (c) heat insulator (d) transparent
  38. 38.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.🧱 Which property matters most for the core of a wire? (a) waterproof (b) heat insulator (c) electrical conductor (d) transparent
  40. 40.🧱 Which property matters most for an oven glove? (a) flexible (b) transparent (c) electrical conductor (d) heat insulator

Answer key

  1. a conductor
  2. heat insulator
  3. True
  4. an insulator
  5. a magnifier lens
  6. True
  7. a conductor
  8. a skipping rope
  9. False
  10. iron
  11. a water tank
  12. waterproof
  13. cotton cloth
  14. wood or plastic
  15. False
  16. an insulator
  17. a cooking pot handle
  18. an umbrella cover
  19. plastic-coated cloth
  20. a window pane
  21. brass
  22. copper
  23. waterproof
  24. an insulator
  25. True
  26. True
  27. an insulator
  28. electrical conductor
  29. a raincoat
  30. a yoga mat
  31. a conductor
  32. a conductor
  33. flexible
  34. a roof sheet
  35. glass
  36. steel
  37. transparent
  38. an insulator
  39. electrical conductor
  40. heat insulator

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