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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 180 · 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 material is best for a raincoat? (a) cotton wool (b) plastic-coated cloth (c) cardboard (d) paper
  2. 2.🔍 Which is the odd one out? (a) plastic (b) copper (c) cotton cloth (d) rubber
  3. 3.🧱 Which property matters most for a raincoat? (a) transparent (b) heat insulator (c) electrical conductor (d) waterproof
  4. 4.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  5. 5.🔍 Which is the odd one out? (a) cotton cloth (b) copper (c) aluminium (d) steel
  6. 6.True or false: a window pane needs a transparent material. (a) True (b) False
  7. 7.True or false: an umbrella cover needs a flexible material. (a) True (b) False
  8. 8.🔍 Which is the odd one out? (a) steel (b) plastic (c) brass (d) copper
  9. 9.🧱 Which material is best for a window pane? (a) brick (b) glass (c) wood (d) steel
  10. 10.🧱 Which material is best for a cooking pot handle? (a) iron (b) aluminium (c) copper (d) wood or plastic
  11. 11.🧱 Which property matters most for a cooking pot handle? (a) transparent (b) flexible (c) electrical conductor (d) heat insulator
  12. 12.True or false: a yoga mat needs a flexible material. (a) False (b) True
  13. 13.🔍 Which is the odd one out? (a) plastic (b) cotton cloth (c) dry wood (d) aluminium
  14. 14.True or false: the core of a wire needs a transparent material. (a) True (b) False
  15. 15.🔍 Which is the odd one out? (a) copper (b) brass (c) graphite (d) rubber
  16. 16.🧱 Which material is best for the core of an electric wire? (a) wood (b) copper (c) glass (d) rubber
  17. 17.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  18. 18.True or false: a magnifier lens needs a transparent material. (a) False (b) True
  19. 19.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🧱 Which property matters most for a plug pin? (a) heat insulator (b) transparent (c) electrical conductor (d) flexible
  21. 21.Which of these needs a heat insulator? (a) a tea flask lining (b) a hair band (c) a raincoat (d) a switch contact
  22. 22.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) heat insulator (c) waterproof (d) transparent
  23. 23.True or false: a car windscreen needs an electrical conductor. (a) False (b) True
  24. 24.🧱 Which material is best for the bars inside concrete? (a) plastic (b) glass (c) steel (d) rubber
  25. 25.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  26. 26.🧱 Which property matters most for a water tank? (a) heat insulator (b) flexible (c) transparent (d) waterproof
  27. 27.True or false: a plug pin needs a flexible material. (a) True (b) False
  28. 28.🧱 Which property matters most for a window pane? (a) transparent (b) flexible (c) heat insulator (d) waterproof
  29. 29.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.Which of these needs an electrical conductor? (a) a tea flask lining (b) a water tank (c) a switch contact (d) a roof sheet
  31. 31.True or false: a raincoat needs a waterproof material. (a) True (b) False
  32. 32.Which of these needs a heat insulator? (a) a window pane (b) a car windscreen (c) a spectacle lens (d) a cooking pot handle
  33. 33.🧱 Which property matters most for a spectacle lens? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  34. 34.Which of these needs a flexible material? (a) a car seat belt (b) a cooking pot handle (c) a magnifier lens (d) a car windscreen
  35. 35.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  36. 36.Which of these needs a heat insulator? (a) a car windscreen (b) an umbrella cover (c) an oven glove (d) a spectacle lens
  37. 37.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.🔍 Which is the odd one out? (a) plastic (b) glass (c) cotton cloth (d) steel
  39. 39.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  40. 40.🔍 Which is the odd one out? (a) graphite (b) clay pottery (c) iron (d) copper

Answer key

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

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