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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 773 · 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 plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  6. 6.🧱 Which property matters most for a boat hull? (a) flexible (b) heat insulator (c) transparent (d) waterproof
  7. 7.🧱 Which property matters most for a plug pin? (a) heat insulator (b) waterproof (c) electrical conductor (d) flexible
  8. 8.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) wood or plastic (c) copper (d) iron
  9. 9.🧱 Which property matters most for a skipping rope? (a) flexible (b) heat insulator (c) transparent (d) waterproof
  10. 10.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cardboard (c) cotton wool (d) paper
  11. 11.True or false: a hair band needs a flexible material. (a) True (b) False
  12. 12.🧱 Which material is best for a window pane? (a) glass (b) brick (c) steel (d) wood
  13. 13.True or false: a magnifier lens needs a flexible material. (a) False (b) True
  14. 14.True or false: a tea flask lining needs a heat insulator. (a) True (b) False
  15. 15.True or false: a window pane needs a heat insulator. (a) True (b) False
  16. 16.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🧱 Which material is best for the core of an electric wire? (a) wood (b) glass (c) rubber (d) copper
  18. 18.True or false: a car seat belt needs a flexible material. (a) False (b) True
  19. 19.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🧱 Which material is best for the bars inside concrete? (a) rubber (b) plastic (c) glass (d) steel
  21. 21.Which of these needs a heat insulator? (a) an oven glove (b) a magnifier lens (c) a roof sheet (d) a boat hull
  22. 22.True or false: an oven glove needs an electrical conductor. (a) True (b) False
  23. 23.🧱 Which property matters most for a window pane? (a) flexible (b) transparent (c) waterproof (d) heat insulator
  24. 24.🔍 Which is the odd one out? (a) dry wood (b) rubber (c) cotton cloth (d) steel
  25. 25.Which of these needs a transparent material? (a) a hair band (b) a window pane (c) a roof sheet (d) a car seat belt
  26. 26.🔍 Which is the odd one out? (a) aluminium (b) graphite (c) copper (d) cotton cloth
  27. 27.🔍 Which is the odd one out? (a) dry wood (b) rubber (c) plastic (d) copper
  28. 28.🔍 Which is the odd one out? (a) clay pottery (b) rubber (c) aluminium (d) plastic
  29. 29.True or false: an umbrella cover needs a transparent material. (a) False (b) True
  30. 30.Which of these needs a transparent material? (a) a spectacle lens (b) a roof sheet (c) a raincoat (d) a boat hull
  31. 31.Which of these needs a waterproof material? (a) a skipping rope (b) an umbrella cover (c) a hair band (d) the core of a wire
  32. 32.Which of these needs an electrical conductor? (a) a tea flask lining (b) a roof sheet (c) a switch contact (d) an umbrella cover
  33. 33.🔍 Which is the odd one out? (a) brass (b) plastic (c) clay pottery (d) glass
  34. 34.Which of these needs a heat insulator? (a) a window pane (b) a water tank (c) a tea flask lining (d) a hair band
  35. 35.🧱 Which property matters most for an oven glove? (a) electrical conductor (b) flexible (c) transparent (d) heat insulator
  36. 36.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  37. 37.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.True or false: the core of a wire needs a waterproof material. (a) False (b) True
  39. 39.True or false: a roof sheet needs a waterproof material. (a) False (b) True
  40. 40.Which of these needs a waterproof material? (a) a boat hull (b) a yoga mat (c) a spectacle lens (d) a car seat belt

Answer key

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

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