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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 235 · 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 an oven glove? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  2. 2.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.Which of these needs a waterproof material? (a) an umbrella cover (b) an oven glove (c) a hair band (d) a yoga mat
  4. 4.True or false: a roof sheet needs a transparent material. (a) False (b) True
  5. 5.True or false: a switch contact needs a flexible material. (a) False (b) True
  6. 6.🧱 Which property matters most for a car seat belt? (a) flexible (b) electrical conductor (c) heat insulator (d) waterproof
  7. 7.🧱 Which property matters most for a tea flask lining? (a) heat insulator (b) transparent (c) waterproof (d) flexible
  8. 8.Which of these needs a heat insulator? (a) the core of a wire (b) a spectacle lens (c) a raincoat (d) a cooking pot handle
  9. 9.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.🧱 Which material is best for the bars inside concrete? (a) rubber (b) steel (c) glass (d) plastic
  11. 11.🧱 Which material is best for the core of an electric wire? (a) rubber (b) copper (c) glass (d) wood
  12. 12.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.Which of these needs a transparent material? (a) a hair band (b) a cooking pot handle (c) a spectacle lens (d) a raincoat
  15. 15.True or false: a magnifier lens needs a heat insulator. (a) True (b) False
  16. 16.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) flexible (c) waterproof (d) heat insulator
  17. 17.🔍 Which is the odd one out? (a) graphite (b) iron (c) copper (d) cotton cloth
  18. 18.🧱 Which property matters most for a raincoat? (a) heat insulator (b) waterproof (c) electrical conductor (d) transparent
  19. 19.🔍 Which is the odd one out? (a) copper (b) rubber (c) clay pottery (d) dry wood
  20. 20.🔍 Which is the odd one out? (a) graphite (b) glass (c) brass (d) aluminium
  21. 21.🧱 Which property matters most for a cooking pot handle? (a) transparent (b) electrical conductor (c) flexible (d) heat insulator
  22. 22.True or false: a plug pin needs an electrical conductor. (a) True (b) False
  23. 23.True or false: an umbrella cover needs a transparent material. (a) True (b) False
  24. 24.True or false: a switch contact needs a transparent material. (a) False (b) True
  25. 25.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.True or false: the core of a wire needs a waterproof material. (a) True (b) False
  27. 27.🧱 Which property matters most for a plug pin? (a) flexible (b) heat insulator (c) transparent (d) electrical conductor
  28. 28.🧱 Which property matters most for the core of a wire? (a) heat insulator (b) flexible (c) transparent (d) electrical conductor
  29. 29.🔍 Which is the odd one out? (a) dry wood (b) aluminium (c) plastic (d) rubber
  30. 30.🧱 Which material is best for a cooking pot handle? (a) iron (b) copper (c) wood or plastic (d) aluminium
  31. 31.🔍 Which is the odd one out? (a) iron (b) rubber (c) copper (d) aluminium
  32. 32.🔍 Which is the odd one out? (a) steel (b) copper (c) graphite (d) dry wood
  33. 33.Which of these needs a transparent material? (a) a water tank (b) a boat hull (c) the core of a wire (d) a window pane
  34. 34.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.Which of these needs a flexible material? (a) a yoga mat (b) a boat hull (c) a car windscreen (d) a tea flask lining
  36. 36.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  37. 37.🔍 Which is the odd one out? (a) glass (b) cotton cloth (c) steel (d) plastic
  38. 38.Which of these needs a transparent material? (a) a car windscreen (b) a raincoat (c) an oven glove (d) a roof sheet
  39. 39.True or false: a skipping rope needs a heat insulator. (a) False (b) True
  40. 40.🧱 Which material is best for a raincoat? (a) cotton wool (b) cardboard (c) paper (d) plastic-coated cloth

Answer key

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

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