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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 96 · 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.True or false: the core of a wire needs a transparent material. (a) True (b) False
  2. 2.🧱 Which property matters most for a spectacle lens? (a) flexible (b) electrical conductor (c) waterproof (d) transparent
  3. 3.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) paper (c) cardboard (d) cotton wool
  4. 4.🔍 Which is the odd one out? (a) plastic (b) cotton cloth (c) clay pottery (d) copper
  5. 5.🧱 Which property matters most for an umbrella cover? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  6. 6.Which of these needs an electrical conductor? (a) an umbrella cover (b) a roof sheet (c) a plug pin (d) a raincoat
  7. 7.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.True or false: a yoga mat needs an electrical conductor. (a) False (b) True
  9. 9.🔍 Which is the odd one out? (a) iron (b) glass (c) steel (d) graphite
  10. 10.🧱 Which property matters most for a plug pin? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  11. 11.True or false: a water tank needs a flexible material. (a) False (b) True
  12. 12.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.🧱 Which property matters most for the core of a wire? (a) waterproof (b) electrical conductor (c) transparent (d) heat insulator
  14. 14.🧱 Which material is best for a window pane? (a) wood (b) brick (c) glass (d) steel
  15. 15.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) rubber (d) glass
  16. 16.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.🧱 Which material is best for the bars inside concrete? (a) steel (b) glass (c) rubber (d) plastic
  18. 18.True or false: a raincoat needs a transparent material. (a) False (b) True
  19. 19.🧱 Which property matters most for a magnifier lens? (a) electrical conductor (b) flexible (c) transparent (d) heat insulator
  20. 20.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🔍 Which is the odd one out? (a) clay pottery (b) rubber (c) brass (d) glass
  22. 22.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  23. 23.🧱 Which material is best for a cooking pot handle? (a) copper (b) iron (c) wood or plastic (d) aluminium
  24. 24.🔍 Which is the odd one out? (a) graphite (b) iron (c) brass (d) plastic
  25. 25.🧱 Which property matters most for a boat hull? (a) transparent (b) waterproof (c) heat insulator (d) electrical conductor
  26. 26.True or false: a boat hull needs a waterproof material. (a) False (b) True
  27. 27.True or false: a switch contact needs a waterproof material. (a) False (b) True
  28. 28.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.🔍 Which is the odd one out? (a) dry wood (b) glass (c) clay pottery (d) aluminium
  30. 30.True or false: a tea flask lining needs a heat insulator. (a) True (b) False
  31. 31.🔍 Which is the odd one out? (a) graphite (b) rubber (c) brass (d) steel
  32. 32.True or false: a magnifier lens needs a transparent material. (a) True (b) False
  33. 33.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🔍 Which is the odd one out? (a) aluminium (b) cotton cloth (c) copper (d) iron
  35. 35.🧱 Which property matters most for a skipping rope? (a) waterproof (b) transparent (c) electrical conductor (d) flexible
  36. 36.Which of these needs a flexible material? (a) a car windscreen (b) a cooking pot handle (c) a hair band (d) a boat hull
  37. 37.Which of these needs a waterproof material? (a) a plug pin (b) a switch contact (c) a water tank (d) a yoga mat
  38. 38.Which of these needs a flexible material? (a) a cooking pot handle (b) a yoga mat (c) a window pane (d) an umbrella cover
  39. 39.True or false: a hair band needs a waterproof material. (a) True (b) False
  40. 40.Which of these needs a heat insulator? (a) a magnifier lens (b) a boat hull (c) an oven glove (d) the core of a wire

Answer key

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

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