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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 239 · 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.🧱 Which property matters most for a switch contact? (a) transparent (b) waterproof (c) electrical conductor (d) heat insulator
  2. 2.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.True or false: a hair band needs a flexible material. (a) False (b) True
  4. 4.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.🔍 Which is the odd one out? (a) clay pottery (b) rubber (c) brass (d) plastic
  7. 7.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.🧱 Which material is best for a window pane? (a) wood (b) steel (c) brick (d) glass
  9. 9.🔍 Which is the odd one out? (a) clay pottery (b) brass (c) steel (d) aluminium
  10. 10.🧱 Which property matters most for a boat hull? (a) transparent (b) waterproof (c) heat insulator (d) electrical conductor
  11. 11.🧱 Which property matters most for an oven glove? (a) heat insulator (b) flexible (c) electrical conductor (d) transparent
  12. 12.True or false: a roof sheet needs a waterproof material. (a) True (b) False
  13. 13.🔍 Which is the odd one out? (a) steel (b) plastic (c) graphite (d) aluminium
  14. 14.True or false: a spectacle lens needs a waterproof material. (a) True (b) False
  15. 15.True or false: a car windscreen needs a waterproof material. (a) True (b) False
  16. 16.True or false: a yoga mat needs a flexible material. (a) True (b) False
  17. 17.True or false: a magnifier lens needs a waterproof material. (a) False (b) True
  18. 18.🔍 Which is the odd one out? (a) aluminium (b) graphite (c) dry wood (d) iron
  19. 19.Which of these needs a waterproof material? (a) a boat hull (b) a switch contact (c) a spectacle lens (d) a plug pin
  20. 20.🧱 Which property matters most for a hair band? (a) waterproof (b) transparent (c) flexible (d) electrical conductor
  21. 21.Which of these needs a transparent material? (a) a car windscreen (b) a roof sheet (c) a raincoat (d) an umbrella cover
  22. 22.Which of these needs a transparent material? (a) a switch contact (b) a raincoat (c) a water tank (d) a magnifier lens
  23. 23.🔍 Which is the odd one out? (a) copper (b) dry wood (c) clay pottery (d) cotton cloth
  24. 24.Which of these needs an electrical conductor? (a) a roof sheet (b) a plug pin (c) an oven glove (d) a boat hull
  25. 25.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) electrical conductor (c) transparent (d) waterproof
  27. 27.🧱 Which property matters most for a magnifier lens? (a) flexible (b) heat insulator (c) transparent (d) waterproof
  28. 28.True or false: a window pane needs a transparent material. (a) False (b) True
  29. 29.🧱 Which property matters most for a window pane? (a) transparent (b) heat insulator (c) electrical conductor (d) waterproof
  30. 30.True or false: a tea flask lining needs a waterproof material. (a) False (b) True
  31. 31.Which of these needs a heat insulator? (a) a tea flask lining (b) a raincoat (c) a skipping rope (d) the core of a wire
  32. 32.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) cardboard (d) paper
  33. 33.🔍 Which is the odd one out? (a) iron (b) clay pottery (c) glass (d) plastic
  34. 34.🧱 Which material is best for the bars inside concrete? (a) steel (b) glass (c) rubber (d) plastic
  35. 35.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) electrical conductor (c) heat insulator (d) transparent
  36. 36.🔍 Which is the odd one out? (a) glass (b) aluminium (c) cotton cloth (d) plastic
  37. 37.True or false: a switch contact needs a flexible material. (a) True (b) False
  38. 38.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.Which of these needs a flexible material? (a) a cooking pot handle (b) a switch contact (c) a skipping rope (d) a raincoat
  40. 40.🧱 Which material is best for the core of an electric wire? (a) copper (b) rubber (c) wood (d) glass

Answer key

  1. electrical conductor
  2. a conductor
  3. True
  4. a conductor
  5. an insulator
  6. brass
  7. an insulator
  8. glass
  9. clay pottery
  10. waterproof
  11. heat insulator
  12. True
  13. plastic
  14. False
  15. False
  16. True
  17. False
  18. dry wood
  19. a boat hull
  20. flexible
  21. a car windscreen
  22. a magnifier lens
  23. copper
  24. a plug pin
  25. a conductor
  26. transparent
  27. transparent
  28. True
  29. transparent
  30. False
  31. a tea flask lining
  32. plastic-coated cloth
  33. iron
  34. steel
  35. waterproof
  36. aluminium
  37. False
  38. a conductor
  39. a skipping rope
  40. copper

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