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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 264 · 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) steel (b) graphite (c) iron (d) cotton cloth
  2. 2.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🧱 Which property matters most for a car windscreen? (a) heat insulator (b) transparent (c) electrical conductor (d) waterproof
  4. 4.🧱 Which property matters most for an umbrella cover? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  5. 5.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.True or false: a tea flask lining needs a heat insulator. (a) True (b) False
  7. 7.Which of these needs a transparent material? (a) a water tank (b) a switch contact (c) a magnifier lens (d) an umbrella cover
  8. 8.🔍 Which is the odd one out? (a) plastic (b) graphite (c) steel (d) brass
  9. 9.🧱 Which material is best for a raincoat? (a) paper (b) plastic-coated cloth (c) cardboard (d) cotton wool
  10. 10.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) copper (c) iron (d) aluminium
  11. 11.True or false: a yoga mat needs a flexible material. (a) False (b) True
  12. 12.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.True or false: an umbrella cover needs a transparent material. (a) False (b) True
  15. 15.Which of these needs a flexible material? (a) an umbrella cover (b) a cooking pot handle (c) a water tank (d) a skipping rope
  16. 16.True or false: a boat hull needs a waterproof material. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) iron (b) dry wood (c) clay pottery (d) plastic
  18. 18.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  19. 19.🧱 Which property matters most for an oven glove? (a) waterproof (b) electrical conductor (c) transparent (d) heat insulator
  20. 20.True or false: a tea flask lining needs a flexible material. (a) False (b) True
  21. 21.True or false: a magnifier lens needs a transparent material. (a) True (b) False
  22. 22.Which of these needs a waterproof material? (a) the core of a wire (b) a water tank (c) a tea flask lining (d) a spectacle lens
  23. 23.🔍 Which is the odd one out? (a) steel (b) iron (c) aluminium (d) rubber
  24. 24.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) copper (d) wood
  26. 26.Which of these needs a heat insulator? (a) a window pane (b) a cooking pot handle (c) a roof sheet (d) a car seat belt
  27. 27.🧱 Which property matters most for a plug pin? (a) flexible (b) transparent (c) electrical conductor (d) heat insulator
  28. 28.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  29. 29.🧱 Which property matters most for the core of a wire? (a) electrical conductor (b) heat insulator (c) waterproof (d) flexible
  30. 30.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.Which of these needs a flexible material? (a) the core of a wire (b) a boat hull (c) a car windscreen (d) a car seat belt
  32. 32.Which of these needs a transparent material? (a) a plug pin (b) a skipping rope (c) a car seat belt (d) a window pane
  33. 33.Which of these needs a transparent material? (a) a spectacle lens (b) a yoga mat (c) a water tank (d) a tea flask lining
  34. 34.True or false: a raincoat needs a waterproof material. (a) True (b) False
  35. 35.Which of these needs an electrical conductor? (a) a raincoat (b) a switch contact (c) a yoga mat (d) an umbrella cover
  36. 36.🧱 Which property matters most for a water tank? (a) heat insulator (b) flexible (c) transparent (d) waterproof
  37. 37.🧱 Which material is best for a window pane? (a) wood (b) brick (c) steel (d) glass
  38. 38.🧱 Which property matters most for a skipping rope? (a) transparent (b) waterproof (c) flexible (d) heat insulator
  39. 39.True or false: a window pane needs an electrical conductor. (a) True (b) False
  40. 40.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) heat insulator (c) flexible (d) transparent

Answer key

  1. cotton cloth
  2. an insulator
  3. transparent
  4. waterproof
  5. a conductor
  6. True
  7. a magnifier lens
  8. plastic
  9. plastic-coated cloth
  10. wood or plastic
  11. True
  12. a conductor
  13. an insulator
  14. False
  15. a skipping rope
  16. True
  17. iron
  18. an insulator
  19. heat insulator
  20. False
  21. True
  22. a water tank
  23. rubber
  24. a conductor
  25. copper
  26. a cooking pot handle
  27. electrical conductor
  28. waterproof
  29. electrical conductor
  30. an insulator
  31. a car seat belt
  32. a window pane
  33. a spectacle lens
  34. True
  35. a switch contact
  36. waterproof
  37. glass
  38. flexible
  39. False
  40. flexible

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