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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 737 · 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 is the odd one out? (a) graphite (b) aluminium (c) plastic (d) brass
  2. 2.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.Which of these needs a heat insulator? (a) a boat hull (b) a window pane (c) a car seat belt (d) a cooking pot handle
  5. 5.🧱 Which property matters most for a yoga mat? (a) heat insulator (b) transparent (c) electrical conductor (d) flexible
  6. 6.Which of these needs a flexible material? (a) an umbrella cover (b) a switch contact (c) a spectacle lens (d) a hair band
  7. 7.🧱 Which property matters most for a boat hull? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  8. 8.Which of these needs an electrical conductor? (a) a plug pin (b) a car seat belt (c) a skipping rope (d) a spectacle lens
  9. 9.🔍 Which is the odd one out? (a) iron (b) graphite (c) rubber (d) brass
  10. 10.🧱 Which property matters most for the core of a wire? (a) heat insulator (b) flexible (c) transparent (d) electrical conductor
  11. 11.Which of these needs a flexible material? (a) a roof sheet (b) a magnifier lens (c) a car seat belt (d) a spectacle lens
  12. 12.🔍 Which is the odd one out? (a) plastic (b) rubber (c) copper (d) dry wood
  13. 13.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) electrical conductor (c) flexible (d) transparent
  14. 14.🧱 Which property matters most for a water tank? (a) flexible (b) electrical conductor (c) transparent (d) waterproof
  15. 15.🧱 Which property matters most for a car windscreen? (a) heat insulator (b) waterproof (c) transparent (d) electrical conductor
  16. 16.True or false: a spectacle lens needs a transparent material. (a) False (b) True
  17. 17.Which of these needs a flexible material? (a) a car windscreen (b) a boat hull (c) a yoga mat (d) a raincoat
  18. 18.🧱 Which material is best for the bars inside concrete? (a) rubber (b) plastic (c) glass (d) steel
  19. 19.🧱 Which property matters most for a raincoat? (a) waterproof (b) flexible (c) heat insulator (d) transparent
  20. 20.🔍 Which is the odd one out? (a) rubber (b) aluminium (c) dry wood (d) plastic
  21. 21.True or false: a raincoat needs a waterproof material. (a) True (b) False
  22. 22.🧱 Which property matters most for a cooking pot handle? (a) flexible (b) transparent (c) waterproof (d) heat insulator
  23. 23.🧱 Which material is best for a window pane? (a) steel (b) brick (c) wood (d) glass
  24. 24.🧱 Which property matters most for a plug pin? (a) waterproof (b) heat insulator (c) flexible (d) electrical conductor
  25. 25.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.True or false: a yoga mat needs a transparent material. (a) True (b) False
  27. 27.True or false: the core of a wire needs a waterproof material. (a) True (b) False
  28. 28.🔍 Which is the odd one out? (a) dry wood (b) copper (c) graphite (d) brass
  29. 29.🧱 Which property matters most for a skipping rope? (a) flexible (b) electrical conductor (c) heat insulator (d) waterproof
  30. 30.Which of these needs an electrical conductor? (a) a hair band (b) a yoga mat (c) a roof sheet (d) a switch contact
  31. 31.🧱 Which material is best for the core of an electric wire? (a) glass (b) wood (c) copper (d) rubber
  32. 32.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) transparent (c) waterproof (d) flexible
  33. 33.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.True or false: a roof sheet needs a flexible material. (a) False (b) True
  35. 35.🧱 Which property matters most for an oven glove? (a) flexible (b) electrical conductor (c) waterproof (d) heat insulator
  36. 36.Which of these needs a transparent material? (a) a spectacle lens (b) a cooking pot handle (c) a plug pin (d) a tea flask lining
  37. 37.Which of these needs a heat insulator? (a) a tea flask lining (b) a water tank (c) a window pane (d) a roof sheet
  38. 38.Which of these needs a heat insulator? (a) a yoga mat (b) a roof sheet (c) a spectacle lens (d) an oven glove
  39. 39.True or false: a car windscreen needs a transparent material. (a) False (b) True
  40. 40.True or false: the core of a wire needs an electrical conductor. (a) False (b) True

Answer key

  1. plastic
  2. a conductor
  3. an insulator
  4. a cooking pot handle
  5. flexible
  6. a hair band
  7. waterproof
  8. a plug pin
  9. rubber
  10. electrical conductor
  11. a car seat belt
  12. copper
  13. transparent
  14. waterproof
  15. transparent
  16. True
  17. a yoga mat
  18. steel
  19. waterproof
  20. aluminium
  21. True
  22. heat insulator
  23. glass
  24. electrical conductor
  25. a conductor
  26. False
  27. False
  28. dry wood
  29. flexible
  30. a switch contact
  31. copper
  32. flexible
  33. a conductor
  34. False
  35. heat insulator
  36. a spectacle lens
  37. a tea flask lining
  38. an oven glove
  39. True
  40. True

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