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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 736 · 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) a conductor (b) an insulator
  2. 2.🧱 Which material is best for the bars inside concrete? (a) glass (b) steel (c) rubber (d) plastic
  3. 3.🧱 Which property matters most for a car seat belt? (a) transparent (b) flexible (c) heat insulator (d) electrical conductor
  4. 4.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) cardboard (d) plastic-coated cloth
  5. 5.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.🧱 Which property matters most for a raincoat? (a) heat insulator (b) transparent (c) flexible (d) waterproof
  7. 7.🔍 Which is the odd one out? (a) glass (b) rubber (c) cotton cloth (d) aluminium
  8. 8.🧱 Which property matters most for a car windscreen? (a) flexible (b) transparent (c) heat insulator (d) waterproof
  9. 9.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.True or false: an umbrella cover needs a transparent material. (a) True (b) False
  12. 12.🧱 Which property matters most for a boat hull? (a) heat insulator (b) electrical conductor (c) waterproof (d) transparent
  13. 13.🧱 Which property matters most for a water tank? (a) heat insulator (b) waterproof (c) electrical conductor (d) transparent
  14. 14.True or false: a tea flask lining needs a heat insulator. (a) True (b) False
  15. 15.🔍 Which is the odd one out? (a) brass (b) graphite (c) dry wood (d) iron
  16. 16.True or false: a water tank needs a waterproof material. (a) False (b) True
  17. 17.True or false: a roof sheet needs a waterproof material. (a) True (b) False
  18. 18.True or false: a yoga mat needs a heat insulator. (a) True (b) False
  19. 19.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.🔍 Which is the odd one out? (a) clay pottery (b) copper (c) cotton cloth (d) plastic
  21. 21.🧱 Which material is best for the core of an electric wire? (a) wood (b) glass (c) rubber (d) copper
  22. 22.🧱 Which property matters most for a hair band? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  23. 23.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  24. 24.🔍 Which is the odd one out? (a) copper (b) clay pottery (c) aluminium (d) graphite
  25. 25.Which of these needs a waterproof material? (a) an umbrella cover (b) a magnifier lens (c) a skipping rope (d) an oven glove
  26. 26.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.🧱 Which material is best for a window pane? (a) brick (b) steel (c) glass (d) wood
  28. 28.🧱 Which property matters most for an umbrella cover? (a) flexible (b) transparent (c) waterproof (d) electrical conductor
  29. 29.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  30. 30.Which of these needs a transparent material? (a) a car windscreen (b) an oven glove (c) the core of a wire (d) a tea flask lining
  31. 31.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) waterproof (c) flexible (d) transparent
  32. 32.🧱 Which property matters most for an oven glove? (a) flexible (b) heat insulator (c) transparent (d) electrical conductor
  33. 33.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🔍 Which is the odd one out? (a) copper (b) aluminium (c) rubber (d) steel
  35. 35.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.True or false: an oven glove needs a flexible material. (a) True (b) False
  37. 37.Which of these needs a transparent material? (a) a roof sheet (b) a spectacle lens (c) a boat hull (d) a plug pin
  38. 38.True or false: a water tank needs a transparent material. (a) False (b) True
  39. 39.True or false: a switch contact needs a flexible material. (a) True (b) False
  40. 40.True or false: the core of a wire needs a flexible material. (a) True (b) False

Answer key

  1. a conductor
  2. steel
  3. flexible
  4. plastic-coated cloth
  5. an insulator
  6. waterproof
  7. aluminium
  8. transparent
  9. a conductor
  10. a conductor
  11. False
  12. waterproof
  13. waterproof
  14. True
  15. dry wood
  16. True
  17. True
  18. False
  19. an insulator
  20. copper
  21. copper
  22. flexible
  23. an insulator
  24. clay pottery
  25. an umbrella cover
  26. an insulator
  27. glass
  28. waterproof
  29. True
  30. a car windscreen
  31. transparent
  32. heat insulator
  33. an insulator
  34. rubber
  35. an insulator
  36. False
  37. a spectacle lens
  38. False
  39. False
  40. False

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