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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 254 · 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.True or false: a switch contact needs a transparent material. (a) True (b) False
  2. 2.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  3. 3.Which of these needs a heat insulator? (a) an umbrella cover (b) a cooking pot handle (c) a skipping rope (d) a roof sheet
  4. 4.Which of these needs a waterproof material? (a) a hair band (b) a plug pin (c) a skipping rope (d) a roof sheet
  5. 5.True or false: a spectacle lens needs a transparent material. (a) False (b) True
  6. 6.🧱 Which property matters most for a boat hull? (a) heat insulator (b) waterproof (c) transparent (d) flexible
  7. 7.🧱 Which material is best for a window pane? (a) wood (b) steel (c) glass (d) brick
  8. 8.Which of these needs an electrical conductor? (a) a car windscreen (b) a water tank (c) a plug pin (d) a hair band
  9. 9.🔍 Which is the odd one out? (a) plastic (b) clay pottery (c) steel (d) rubber
  10. 10.Which of these needs a waterproof material? (a) a magnifier lens (b) a raincoat (c) the core of a wire (d) a tea flask lining
  11. 11.🔍 Which is the odd one out? (a) copper (b) steel (c) iron (d) plastic
  12. 12.Which of these needs an electrical conductor? (a) an oven glove (b) the core of a wire (c) a boat hull (d) a water tank
  13. 13.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.🧱 Which property matters most for a yoga mat? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  15. 15.🧱 Which property matters most for a cooking pot handle? (a) heat insulator (b) waterproof (c) transparent (d) electrical conductor
  16. 16.Which of these needs a flexible material? (a) a roof sheet (b) a car windscreen (c) a car seat belt (d) a spectacle lens
  17. 17.🧱 Which property matters most for a skipping rope? (a) heat insulator (b) flexible (c) electrical conductor (d) waterproof
  18. 18.🧱 Which material is best for the core of an electric wire? (a) rubber (b) copper (c) wood (d) glass
  19. 19.True or false: a skipping rope needs a flexible material. (a) False (b) True
  20. 20.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  21. 21.True or false: a plug pin needs an electrical conductor. (a) True (b) False
  22. 22.True or false: a plug pin needs a transparent material. (a) False (b) True
  23. 23.Which of these needs a flexible material? (a) an umbrella cover (b) a cooking pot handle (c) a spectacle lens (d) a hair band
  24. 24.True or false: a raincoat needs a transparent material. (a) False (b) True
  25. 25.True or false: a raincoat needs an electrical conductor. (a) False (b) True
  26. 26.🧱 Which property matters most for a switch contact? (a) waterproof (b) flexible (c) transparent (d) electrical conductor
  27. 27.True or false: a tea flask lining needs a waterproof material. (a) True (b) False
  28. 28.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.True or false: a raincoat needs a waterproof material. (a) True (b) False
  30. 30.🔍 Which is the odd one out? (a) rubber (b) steel (c) copper (d) aluminium
  31. 31.True or false: a cooking pot handle needs a heat insulator. (a) False (b) True
  32. 32.True or false: an oven glove needs a heat insulator. (a) True (b) False
  33. 33.Which of these needs a waterproof material? (a) a hair band (b) a cooking pot handle (c) a spectacle lens (d) an umbrella cover
  34. 34.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.Which of these needs a transparent material? (a) an oven glove (b) a window pane (c) a roof sheet (d) a boat hull
  36. 36.Which of these needs an electrical conductor? (a) a cooking pot handle (b) a switch contact (c) a hair band (d) a raincoat
  37. 37.True or false: a water tank needs a waterproof material. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) aluminium (b) steel (c) brass (d) cotton cloth
  39. 39.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  40. 40.🧱 Which material is best for a raincoat? (a) cotton wool (b) cardboard (c) plastic-coated cloth (d) paper

Answer key

  1. False
  2. True
  3. a cooking pot handle
  4. a roof sheet
  5. True
  6. waterproof
  7. glass
  8. a plug pin
  9. steel
  10. a raincoat
  11. plastic
  12. the core of a wire
  13. an insulator
  14. flexible
  15. heat insulator
  16. a car seat belt
  17. flexible
  18. copper
  19. True
  20. a conductor
  21. True
  22. False
  23. a hair band
  24. False
  25. False
  26. electrical conductor
  27. False
  28. an insulator
  29. True
  30. rubber
  31. True
  32. True
  33. an umbrella cover
  34. a conductor
  35. a window pane
  36. a switch contact
  37. True
  38. cotton cloth
  39. a conductor
  40. plastic-coated cloth

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