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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 777 · 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 rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) paper (d) cardboard
  3. 3.Which of these needs a heat insulator? (a) an oven glove (b) a yoga mat (c) a magnifier lens (d) a spectacle lens
  4. 4.🧱 Which property matters most for a water tank? (a) flexible (b) transparent (c) waterproof (d) heat insulator
  5. 5.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) rubber (d) glass
  6. 6.🧱 Which property matters most for a switch contact? (a) flexible (b) electrical conductor (c) heat insulator (d) transparent
  7. 7.🔍 Which is the odd one out? (a) copper (b) graphite (c) clay pottery (d) steel
  8. 8.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) steel (d) plastic
  10. 10.True or false: a roof sheet needs an electrical conductor. (a) False (b) True
  11. 11.Which of these needs a waterproof material? (a) a spectacle lens (b) a raincoat (c) a plug pin (d) a hair band
  12. 12.🧱 Which material is best for a cooking pot handle? (a) iron (b) wood or plastic (c) copper (d) aluminium
  13. 13.True or false: a roof sheet needs a waterproof material. (a) False (b) True
  14. 14.Which of these needs a waterproof material? (a) the core of a wire (b) a car windscreen (c) a spectacle lens (d) a boat hull
  15. 15.True or false: an umbrella cover needs a waterproof material. (a) False (b) True
  16. 16.True or false: a car seat belt needs a flexible material. (a) False (b) True
  17. 17.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  18. 18.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.Which of these needs an electrical conductor? (a) a boat hull (b) a plug pin (c) a water tank (d) a window pane
  20. 20.True or false: a cooking pot handle needs an electrical conductor. (a) True (b) False
  21. 21.Which of these needs a flexible material? (a) a window pane (b) the core of a wire (c) a car seat belt (d) a cooking pot handle
  22. 22.Which of these needs a transparent material? (a) a water tank (b) the core of a wire (c) a car seat belt (d) a window pane
  23. 23.True or false: a plug pin needs a heat insulator. (a) True (b) False
  24. 24.🧱 Which property matters most for an oven glove? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  25. 25.True or false: a plug pin needs a waterproof material. (a) False (b) True
  26. 26.🧱 Which material is best for a window pane? (a) glass (b) wood (c) brick (d) steel
  27. 27.🔍 Which is the odd one out? (a) steel (b) aluminium (c) copper (d) cotton cloth
  28. 28.🔍 Which is the odd one out? (a) copper (b) glass (c) brass (d) steel
  29. 29.🧱 Which property matters most for a spectacle lens? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  30. 30.🧱 Which property matters most for a plug pin? (a) heat insulator (b) flexible (c) transparent (d) electrical conductor
  31. 31.🧱 Which property matters most for a hair band? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  32. 32.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  33. 33.True or false: a car seat belt needs a transparent material. (a) False (b) True
  34. 34.True or false: the core of a wire needs a waterproof material. (a) False (b) True
  35. 35.🧱 Which property matters most for an umbrella cover? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible
  36. 36.🧱 Which property matters most for a yoga mat? (a) transparent (b) heat insulator (c) waterproof (d) flexible
  37. 37.Which of these needs an electrical conductor? (a) a window pane (b) a skipping rope (c) the core of a wire (d) a magnifier lens
  38. 38.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.True or false: a switch contact needs an electrical conductor. (a) True (b) False
  40. 40.True or false: a magnifier lens needs a heat insulator. (a) False (b) True

Answer key

  1. an insulator
  2. plastic-coated cloth
  3. an oven glove
  4. waterproof
  5. copper
  6. electrical conductor
  7. clay pottery
  8. a conductor
  9. steel
  10. False
  11. a raincoat
  12. wood or plastic
  13. True
  14. a boat hull
  15. True
  16. True
  17. a conductor
  18. an insulator
  19. a plug pin
  20. False
  21. a car seat belt
  22. a window pane
  23. False
  24. heat insulator
  25. False
  26. glass
  27. cotton cloth
  28. glass
  29. transparent
  30. electrical conductor
  31. flexible
  32. an insulator
  33. False
  34. False
  35. waterproof
  36. flexible
  37. the core of a wire
  38. a conductor
  39. True
  40. False

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