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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 975 · 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 dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🧱 Which property matters most for a window pane? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  3. 3.True or false: a roof sheet needs a waterproof material. (a) True (b) False
  4. 4.🧱 Which property matters most for a skipping rope? (a) transparent (b) waterproof (c) flexible (d) heat insulator
  5. 5.True or false: a yoga mat needs a transparent material. (a) False (b) True
  6. 6.🔍 Which is the odd one out? (a) aluminium (b) graphite (c) rubber (d) brass
  7. 7.🧱 Which property matters most for a tea flask lining? (a) heat insulator (b) electrical conductor (c) transparent (d) waterproof
  8. 8.Which of these needs a flexible material? (a) a car windscreen (b) an umbrella cover (c) a car seat belt (d) a magnifier lens
  9. 9.True or false: a tea flask lining needs a heat insulator. (a) True (b) False
  10. 10.🧱 Which material is best for the bars inside concrete? (a) rubber (b) glass (c) steel (d) plastic
  11. 11.🧱 Which material is best for a cooking pot handle? (a) iron (b) wood or plastic (c) copper (d) aluminium
  12. 12.🧱 Which property matters most for a raincoat? (a) flexible (b) electrical conductor (c) heat insulator (d) waterproof
  13. 13.🔍 Which is the odd one out? (a) copper (b) steel (c) cotton cloth (d) graphite
  14. 14.True or false: a switch contact needs an electrical conductor. (a) True (b) False
  15. 15.🔍 Which is the odd one out? (a) graphite (b) iron (c) copper (d) plastic
  16. 16.True or false: a raincoat needs a transparent material. (a) True (b) False
  17. 17.True or false: a spectacle lens needs an electrical conductor. (a) True (b) False
  18. 18.🔍 Which is the odd one out? (a) graphite (b) aluminium (c) iron (d) glass
  19. 19.Which of these needs an electrical conductor? (a) a switch contact (b) a roof sheet (c) a magnifier lens (d) a boat hull
  20. 20.Which of these needs a flexible material? (a) a roof sheet (b) a cooking pot handle (c) a water tank (d) a yoga mat
  21. 21.🧱 Which material is best for a raincoat? (a) paper (b) cardboard (c) plastic-coated cloth (d) cotton wool
  22. 22.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.True or false: the core of a wire needs an electrical conductor. (a) True (b) False
  24. 24.Which of these needs a waterproof material? (a) a car seat belt (b) a spectacle lens (c) a switch contact (d) an umbrella cover
  25. 25.🔍 Which is the odd one out? (a) copper (b) steel (c) clay pottery (d) aluminium
  26. 26.🧱 Which property matters most for a plug pin? (a) electrical conductor (b) transparent (c) flexible (d) heat insulator
  27. 27.True or false: an umbrella cover needs a flexible material. (a) False (b) True
  28. 28.Which of these needs a waterproof material? (a) a spectacle lens (b) a tea flask lining (c) a yoga mat (d) a water tank
  29. 29.True or false: an oven glove needs an electrical conductor. (a) True (b) False
  30. 30.🔍 Which is the odd one out? (a) cotton cloth (b) clay pottery (c) glass (d) copper
  31. 31.🧱 Which property matters most for an oven glove? (a) electrical conductor (b) flexible (c) heat insulator (d) transparent
  32. 32.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  33. 33.🔍 Which is the odd one out? (a) cotton cloth (b) dry wood (c) clay pottery (d) graphite
  34. 34.🧱 Which property matters most for a hair band? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
  35. 35.🧱 Which property matters most for a magnifier lens? (a) waterproof (b) electrical conductor (c) heat insulator (d) transparent
  36. 36.🧱 Which property matters most for a spectacle lens? (a) waterproof (b) flexible (c) electrical conductor (d) transparent
  37. 37.Which of these needs a waterproof material? (a) a plug pin (b) a spectacle lens (c) a roof sheet (d) a magnifier lens
  38. 38.Which of these needs a transparent material? (a) a boat hull (b) a raincoat (c) an umbrella cover (d) a window pane
  39. 39.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) heat insulator (c) flexible (d) electrical conductor
  40. 40.Which of these needs a flexible material? (a) a hair band (b) a plug pin (c) an umbrella cover (d) a spectacle lens

Answer key

  1. an insulator
  2. transparent
  3. True
  4. flexible
  5. False
  6. rubber
  7. heat insulator
  8. a car seat belt
  9. True
  10. steel
  11. wood or plastic
  12. waterproof
  13. cotton cloth
  14. True
  15. plastic
  16. False
  17. False
  18. glass
  19. a switch contact
  20. a yoga mat
  21. plastic-coated cloth
  22. a conductor
  23. True
  24. an umbrella cover
  25. clay pottery
  26. electrical conductor
  27. False
  28. a water tank
  29. False
  30. copper
  31. heat insulator
  32. a conductor
  33. graphite
  34. flexible
  35. transparent
  36. transparent
  37. a roof sheet
  38. a window pane
  39. heat insulator
  40. a hair band

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