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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 904 · 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 copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.Which of these needs a flexible material? (a) a magnifier lens (b) a tea flask lining (c) an oven glove (d) a yoga mat
  3. 3.🧱 Which property matters most for a switch contact? (a) transparent (b) flexible (c) waterproof (d) electrical conductor
  4. 4.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.🧱 Which property matters most for a boat hull? (a) transparent (b) heat insulator (c) waterproof (d) electrical conductor
  6. 6.🔍 Which is the odd one out? (a) copper (b) cotton cloth (c) glass (d) rubber
  7. 7.True or false: an oven glove needs a flexible material. (a) True (b) False
  8. 8.True or false: a yoga mat needs a waterproof material. (a) True (b) False
  9. 9.🔍 Which is the odd one out? (a) plastic (b) aluminium (c) rubber (d) dry wood
  10. 10.🧱 Which material is best for a cooking pot handle? (a) copper (b) iron (c) aluminium (d) wood or plastic
  11. 11.🔍 Which is the odd one out? (a) brass (b) cotton cloth (c) clay pottery (d) dry wood
  12. 12.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.Which of these needs a waterproof material? (a) a tea flask lining (b) a magnifier lens (c) a water tank (d) a switch contact
  14. 14.True or false: a car seat belt needs a flexible material. (a) False (b) True
  15. 15.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  16. 16.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.True or false: a window pane needs a transparent material. (a) True (b) False
  18. 18.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.🧱 Which material is best for a raincoat? (a) cardboard (b) paper (c) plastic-coated cloth (d) cotton wool
  20. 20.True or false: a boat hull needs an electrical conductor. (a) True (b) False
  21. 21.True or false: a yoga mat needs a flexible material. (a) False (b) True
  22. 22.🔍 Which is the odd one out? (a) iron (b) cotton cloth (c) aluminium (d) steel
  23. 23.True or false: a boat hull needs a transparent material. (a) False (b) True
  24. 24.🔍 Which is the odd one out? (a) steel (b) plastic (c) brass (d) iron
  25. 25.Which of these needs an electrical conductor? (a) a car windscreen (b) a switch contact (c) a roof sheet (d) a cooking pot handle
  26. 26.🔍 Which is the odd one out? (a) copper (b) graphite (c) brass (d) clay pottery
  27. 27.🧱 Which material is best for a window pane? (a) brick (b) wood (c) steel (d) glass
  28. 28.True or false: a window pane needs a heat insulator. (a) False (b) True
  29. 29.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.🔍 Which is the odd one out? (a) glass (b) cotton cloth (c) steel (d) dry wood
  31. 31.🔍 Which is the odd one out? (a) aluminium (b) copper (c) iron (d) glass
  32. 32.True or false: a raincoat needs a heat insulator. (a) False (b) True
  33. 33.Which of these needs an electrical conductor? (a) the core of a wire (b) a skipping rope (c) a yoga mat (d) a spectacle lens
  34. 34.🧱 Which property matters most for a yoga mat? (a) waterproof (b) transparent (c) flexible (d) heat insulator
  35. 35.🧱 Which property matters most for a skipping rope? (a) flexible (b) heat insulator (c) electrical conductor (d) waterproof
  36. 36.Which of these needs a heat insulator? (a) a yoga mat (b) a plug pin (c) an oven glove (d) a skipping rope
  37. 37.🧱 Which property matters most for a tea flask lining? (a) heat insulator (b) waterproof (c) transparent (d) electrical conductor
  38. 38.🧱 Which property matters most for a window pane? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  39. 39.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) flexible (c) waterproof (d) heat insulator
  40. 40.🔍 Which is the odd one out? (a) copper (b) iron (c) aluminium (d) dry wood

Answer key

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

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