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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 271 · 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) an insulator (b) a conductor
  2. 2.🧱 Which property matters most for a raincoat? (a) flexible (b) transparent (c) waterproof (d) electrical conductor
  3. 3.Which of these needs a waterproof material? (a) a switch contact (b) a raincoat (c) a window pane (d) a magnifier lens
  4. 4.Which of these needs an electrical conductor? (a) an umbrella cover (b) a cooking pot handle (c) a switch contact (d) a car seat belt
  5. 5.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.🔍 Which is the odd one out? (a) plastic (b) clay pottery (c) iron (d) cotton cloth
  7. 7.Which of these needs a waterproof material? (a) a tea flask lining (b) an umbrella cover (c) a magnifier lens (d) a yoga mat
  8. 8.🧱 Is clay pottery 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) plastic (d) steel
  10. 10.🧱 Which material is best for the core of an electric wire? (a) copper (b) glass (c) wood (d) rubber
  11. 11.Which of these needs a waterproof material? (a) a car windscreen (b) a yoga mat (c) a magnifier lens (d) a boat hull
  12. 12.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  15. 15.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  16. 16.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) copper (c) iron (d) aluminium
  17. 17.🧱 Which property matters most for a water tank? (a) electrical conductor (b) flexible (c) waterproof (d) transparent
  18. 18.Which of these needs a heat insulator? (a) a raincoat (b) a plug pin (c) an oven glove (d) the core of a wire
  19. 19.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.🧱 Which property matters most for a skipping rope? (a) electrical conductor (b) waterproof (c) transparent (d) flexible
  21. 21.True or false: an umbrella cover needs a transparent material. (a) True (b) False
  22. 22.True or false: a boat hull needs a waterproof material. (a) False (b) True
  23. 23.True or false: an umbrella cover needs a flexible material. (a) True (b) False
  24. 24.True or false: an oven glove needs a heat insulator. (a) True (b) False
  25. 25.🧱 Which material is best for a raincoat? (a) cardboard (b) cotton wool (c) paper (d) plastic-coated cloth
  26. 26.Which of these needs a flexible material? (a) an umbrella cover (b) a switch contact (c) a roof sheet (d) a hair band
  27. 27.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  28. 28.True or false: a spectacle lens needs a waterproof material. (a) True (b) False
  29. 29.True or false: a switch contact needs a transparent material. (a) True (b) False
  30. 30.Which of these needs a flexible material? (a) a switch contact (b) an oven glove (c) a skipping rope (d) a raincoat
  31. 31.True or false: an oven glove needs an electrical conductor. (a) False (b) True
  32. 32.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  33. 33.Which of these needs a transparent material? (a) a tea flask lining (b) an umbrella cover (c) an oven glove (d) a spectacle lens
  34. 34.🧱 Which property matters most for a tea flask lining? (a) transparent (b) electrical conductor (c) flexible (d) heat insulator
  35. 35.True or false: an oven glove needs a flexible material. (a) False (b) True
  36. 36.🔍 Which is the odd one out? (a) brass (b) graphite (c) cotton cloth (d) aluminium
  37. 37.🧱 Which property matters most for an oven glove? (a) heat insulator (b) transparent (c) flexible (d) electrical conductor
  38. 38.🔍 Which is the odd one out? (a) glass (b) dry wood (c) steel (d) cotton cloth
  39. 39.True or false: an umbrella cover needs a waterproof material. (a) False (b) True
  40. 40.🔍 Which is the odd one out? (a) cotton cloth (b) glass (c) rubber (d) copper

Answer key

  1. an insulator
  2. waterproof
  3. a raincoat
  4. a switch contact
  5. an insulator
  6. iron
  7. an umbrella cover
  8. an insulator
  9. steel
  10. copper
  11. a boat hull
  12. a conductor
  13. a conductor
  14. a conductor
  15. a conductor
  16. wood or plastic
  17. waterproof
  18. an oven glove
  19. a conductor
  20. flexible
  21. False
  22. True
  23. False
  24. True
  25. plastic-coated cloth
  26. a hair band
  27. waterproof
  28. False
  29. False
  30. a skipping rope
  31. False
  32. an insulator
  33. a spectacle lens
  34. heat insulator
  35. False
  36. cotton cloth
  37. heat insulator
  38. steel
  39. True
  40. copper

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