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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 529 · 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 of these needs a waterproof material? (a) a plug pin (b) a boat hull (c) a magnifier lens (d) a car seat belt
  2. 2.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) cardboard (d) paper
  3. 3.🧱 Which material is best for a cooking pot handle? (a) iron (b) wood or plastic (c) aluminium (d) copper
  4. 4.🧱 Which property matters most for a water tank? (a) flexible (b) waterproof (c) transparent (d) electrical conductor
  5. 5.True or false: a water tank needs a flexible material. (a) True (b) False
  6. 6.🔍 Which is the odd one out? (a) iron (b) graphite (c) aluminium (d) plastic
  7. 7.Which of these needs a transparent material? (a) a cooking pot handle (b) a plug pin (c) a switch contact (d) a spectacle lens
  8. 8.🔍 Which is the odd one out? (a) brass (b) graphite (c) iron (d) glass
  9. 9.True or false: a hair band needs a heat insulator. (a) False (b) True
  10. 10.🔍 Which is the odd one out? (a) brass (b) steel (c) rubber (d) iron
  11. 11.🔍 Which is the odd one out? (a) cotton cloth (b) copper (c) clay pottery (d) rubber
  12. 12.🔍 Which is the odd one out? (a) graphite (b) clay pottery (c) steel (d) iron
  13. 13.Which of these needs a transparent material? (a) a switch contact (b) a window pane (c) a cooking pot handle (d) an umbrella cover
  14. 14.True or false: a plug pin needs a waterproof material. (a) False (b) True
  15. 15.True or false: a yoga mat needs a heat insulator. (a) True (b) False
  16. 16.🔍 Which is the odd one out? (a) rubber (b) graphite (c) dry wood (d) cotton cloth
  17. 17.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  18. 18.True or false: an umbrella cover needs a heat insulator. (a) True (b) False
  19. 19.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  20. 20.🔍 Which is the odd one out? (a) cotton cloth (b) steel (c) iron (d) graphite
  21. 21.🧱 Which material is best for the bars inside concrete? (a) rubber (b) steel (c) plastic (d) glass
  22. 22.🧱 Which property matters most for an oven glove? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible
  23. 23.Which of these needs a transparent material? (a) a tea flask lining (b) an umbrella cover (c) a car windscreen (d) a car seat belt
  24. 24.🧱 Which material is best for the core of an electric wire? (a) wood (b) glass (c) copper (d) rubber
  25. 25.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  26. 26.🧱 Which property matters most for an umbrella cover? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  27. 27.🧱 Which property matters most for a car windscreen? (a) flexible (b) transparent (c) electrical conductor (d) waterproof
  28. 28.Which of these needs a heat insulator? (a) a spectacle lens (b) an oven glove (c) a raincoat (d) the core of a wire
  29. 29.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.Which of these needs a heat insulator? (a) a roof sheet (b) a car seat belt (c) a cooking pot handle (d) an umbrella cover
  31. 31.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  32. 32.Which of these needs a heat insulator? (a) a plug pin (b) a tea flask lining (c) a raincoat (d) a car windscreen
  33. 33.🧱 Which property matters most for the core of a wire? (a) heat insulator (b) transparent (c) electrical conductor (d) flexible
  34. 34.True or false: a magnifier lens needs a heat insulator. (a) True (b) False
  35. 35.🧱 Which property matters most for a window pane? (a) flexible (b) electrical conductor (c) transparent (d) waterproof
  36. 36.Which of these needs a flexible material? (a) a yoga mat (b) a cooking pot handle (c) a spectacle lens (d) a raincoat
  37. 37.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) heat insulator (c) electrical conductor (d) transparent
  38. 38.🧱 Which property matters most for a switch contact? (a) transparent (b) flexible (c) electrical conductor (d) heat insulator
  39. 39.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  40. 40.True or false: a spectacle lens needs an electrical conductor. (a) False (b) True

Answer key

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

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