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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 763 · 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) an insulator (b) a conductor
  2. 2.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) glass (d) steel
  3. 3.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) glass (d) rubber
  5. 5.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.Which of these needs a heat insulator? (a) a car windscreen (b) a cooking pot handle (c) a switch contact (d) a raincoat
  7. 7.🧱 Which property matters most for a switch contact? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
  8. 8.True or false: an umbrella cover needs an electrical conductor. (a) False (b) True
  9. 9.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) cardboard (d) paper
  10. 10.Which of these needs a transparent material? (a) a car seat belt (b) the core of a wire (c) a magnifier lens (d) an umbrella cover
  11. 11.True or false: an umbrella cover needs a waterproof material. (a) True (b) False
  12. 12.🧱 Which property matters most for the core of a wire? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  13. 13.🔍 Which is the odd one out? (a) copper (b) brass (c) steel (d) glass
  14. 14.True or false: a spectacle lens needs a heat insulator. (a) True (b) False
  15. 15.🧱 Which property matters most for a water tank? (a) transparent (b) heat insulator (c) waterproof (d) electrical conductor
  16. 16.Which of these needs a flexible material? (a) a raincoat (b) a spectacle lens (c) a magnifier lens (d) a hair band
  17. 17.Which of these needs a heat insulator? (a) a plug pin (b) a spectacle lens (c) an oven glove (d) a water tank
  18. 18.🔍 Which is the odd one out? (a) graphite (b) copper (c) steel (d) plastic
  19. 19.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🔍 Which is the odd one out? (a) graphite (b) steel (c) iron (d) cotton cloth
  21. 21.🧱 Which property matters most for a car windscreen? (a) waterproof (b) transparent (c) heat insulator (d) electrical conductor
  22. 22.🧱 Which property matters most for a plug pin? (a) flexible (b) transparent (c) electrical conductor (d) heat insulator
  23. 23.Which of these needs an electrical conductor? (a) the core of a wire (b) a roof sheet (c) a magnifier lens (d) a tea flask lining
  24. 24.🧱 Which material is best for a window pane? (a) wood (b) glass (c) brick (d) steel
  25. 25.🧱 Which property matters most for a spectacle lens? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  26. 26.True or false: a tea flask lining needs a heat insulator. (a) False (b) True
  27. 27.True or false: a roof sheet needs a waterproof material. (a) True (b) False
  28. 28.🔍 Which is the odd one out? (a) plastic (b) glass (c) graphite (d) clay pottery
  29. 29.🔍 Which is the odd one out? (a) brass (b) clay pottery (c) plastic (d) glass
  30. 30.Which of these needs an electrical conductor? (a) a switch contact (b) a boat hull (c) a cooking pot handle (d) a hair band
  31. 31.🧱 Which property matters most for a hair band? (a) transparent (b) heat insulator (c) waterproof (d) flexible
  32. 32.Which of these needs a transparent material? (a) an umbrella cover (b) a switch contact (c) a window pane (d) the core of a wire
  33. 33.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) flexible (c) heat insulator (d) electrical conductor
  34. 34.True or false: the core of a wire needs a transparent material. (a) False (b) True
  35. 35.Which of these needs a flexible material? (a) a plug pin (b) an oven glove (c) a roof sheet (d) a car seat belt
  36. 36.Which of these needs a waterproof material? (a) a tea flask lining (b) a raincoat (c) a car windscreen (d) the core of a wire
  37. 37.🧱 Which property matters most for a skipping rope? (a) heat insulator (b) transparent (c) flexible (d) waterproof
  38. 38.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  39. 39.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  40. 40.🔍 Which is the odd one out? (a) copper (b) brass (c) aluminium (d) rubber

Answer key

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

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