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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 451 · 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 dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) transparent (c) flexible (d) electrical conductor
  4. 4.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) electrical conductor (c) transparent (d) waterproof
  5. 5.🧱 Which material is best for the core of an electric wire? (a) wood (b) copper (c) glass (d) rubber
  6. 6.True or false: a boat hull needs a heat insulator. (a) False (b) True
  7. 7.🔍 Which is the odd one out? (a) clay pottery (b) iron (c) copper (d) aluminium
  8. 8.Which of these needs a flexible material? (a) a spectacle lens (b) a switch contact (c) a skipping rope (d) an umbrella cover
  9. 9.🧱 Which property matters most for a magnifier lens? (a) waterproof (b) electrical conductor (c) transparent (d) flexible
  10. 10.Which of these needs an electrical conductor? (a) a boat hull (b) a spectacle lens (c) a switch contact (d) a roof sheet
  11. 11.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  12. 12.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.🧱 Which property matters most for a roof sheet? (a) electrical conductor (b) waterproof (c) flexible (d) heat insulator
  14. 14.Which of these needs a heat insulator? (a) an umbrella cover (b) a tea flask lining (c) a magnifier lens (d) a boat hull
  15. 15.🧱 Which material is best for a window pane? (a) steel (b) glass (c) brick (d) wood
  16. 16.True or false: a water tank needs a waterproof material. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) steel (b) copper (c) graphite (d) cotton cloth
  18. 18.Which of these needs a transparent material? (a) a hair band (b) a car windscreen (c) a switch contact (d) a car seat belt
  19. 19.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🔍 Which is the odd one out? (a) aluminium (b) steel (c) brass (d) dry wood
  21. 21.🧱 Which property matters most for a cooking pot handle? (a) heat insulator (b) flexible (c) electrical conductor (d) waterproof
  22. 22.Which of these needs an electrical conductor? (a) a raincoat (b) a cooking pot handle (c) a hair band (d) the core of a wire
  23. 23.True or false: a roof sheet needs a waterproof material. (a) False (b) True
  24. 24.Which of these needs a waterproof material? (a) a plug pin (b) a window pane (c) a yoga mat (d) a water tank
  25. 25.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  26. 26.True or false: a window pane needs a waterproof material. (a) False (b) True
  27. 27.🔍 Which is the odd one out? (a) copper (b) cotton cloth (c) rubber (d) clay pottery
  28. 28.🔍 Which is the odd one out? (a) steel (b) copper (c) graphite (d) plastic
  29. 29.🧱 Which property matters most for an oven glove? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  30. 30.True or false: an umbrella cover needs an electrical conductor. (a) True (b) False
  31. 31.True or false: a raincoat needs an electrical conductor. (a) True (b) False
  32. 32.True or false: an oven glove needs a flexible material. (a) False (b) True
  33. 33.True or false: a yoga mat needs a heat insulator. (a) False (b) True
  34. 34.True or false: a boat hull needs a transparent material. (a) False (b) True
  35. 35.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  37. 37.🔍 Which is the odd one out? (a) glass (b) clay pottery (c) rubber (d) graphite
  38. 38.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.🧱 Which property matters most for a car windscreen? (a) waterproof (b) transparent (c) heat insulator (d) electrical conductor
  40. 40.True or false: a roof sheet needs a heat insulator. (a) False (b) True

Answer key

  1. an insulator
  2. an insulator
  3. waterproof
  4. transparent
  5. copper
  6. False
  7. clay pottery
  8. a skipping rope
  9. transparent
  10. a switch contact
  11. a conductor
  12. an insulator
  13. waterproof
  14. a tea flask lining
  15. glass
  16. True
  17. cotton cloth
  18. a car windscreen
  19. a conductor
  20. dry wood
  21. heat insulator
  22. the core of a wire
  23. True
  24. a water tank
  25. True
  26. False
  27. copper
  28. plastic
  29. heat insulator
  30. False
  31. False
  32. False
  33. False
  34. False
  35. an insulator
  36. an insulator
  37. graphite
  38. a conductor
  39. transparent
  40. False

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