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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 447 · 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 rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.Which of these needs a heat insulator? (a) a hair band (b) a magnifier lens (c) a water tank (d) a cooking pot handle
  3. 3.Which of these needs a flexible material? (a) a magnifier lens (b) a roof sheet (c) a raincoat (d) a car seat belt
  4. 4.Which of these needs a flexible material? (a) a boat hull (b) a plug pin (c) a yoga mat (d) a cooking pot handle
  5. 5.Which of these needs a waterproof material? (a) a plug pin (b) a yoga mat (c) a water tank (d) a window pane
  6. 6.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  7. 7.Which of these needs a transparent material? (a) a yoga mat (b) a switch contact (c) a window pane (d) a tea flask lining
  8. 8.🧱 Which material is best for a raincoat? (a) paper (b) plastic-coated cloth (c) cardboard (d) cotton wool
  9. 9.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.True or false: a car seat belt needs an electrical conductor. (a) False (b) True
  11. 11.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.🧱 Which property matters most for a car seat belt? (a) waterproof (b) flexible (c) electrical conductor (d) heat insulator
  13. 13.True or false: a spectacle lens needs a heat insulator. (a) True (b) False
  14. 14.🧱 Which property matters most for a raincoat? (a) transparent (b) electrical conductor (c) flexible (d) waterproof
  15. 15.True or false: a yoga mat needs a waterproof material. (a) True (b) False
  16. 16.🧱 Which property matters most for a cooking pot handle? (a) flexible (b) electrical conductor (c) transparent (d) heat insulator
  17. 17.🔍 Which is the odd one out? (a) dry wood (b) graphite (c) plastic (d) rubber
  18. 18.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.Which of these needs a flexible material? (a) a magnifier lens (b) a skipping rope (c) a spectacle lens (d) a water tank
  20. 20.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🧱 Which material is best for the bars inside concrete? (a) plastic (b) glass (c) steel (d) rubber
  22. 22.🧱 Which material is best for a window pane? (a) steel (b) wood (c) brick (d) glass
  23. 23.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  24. 24.True or false: a spectacle lens needs a transparent material. (a) True (b) False
  25. 25.🔍 Which is the odd one out? (a) cotton cloth (b) clay pottery (c) brass (d) rubber
  26. 26.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) wood or plastic (c) iron (d) copper
  27. 27.🔍 Which is the odd one out? (a) steel (b) graphite (c) clay pottery (d) copper
  28. 28.🧱 Which property matters most for a boat hull? (a) flexible (b) heat insulator (c) waterproof (d) electrical conductor
  29. 29.🧱 Which property matters most for a water tank? (a) electrical conductor (b) transparent (c) waterproof (d) flexible
  30. 30.True or false: a tea flask lining needs a heat insulator. (a) False (b) True
  31. 31.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  32. 32.🔍 Which is the odd one out? (a) steel (b) iron (c) brass (d) cotton cloth
  33. 33.True or false: a raincoat needs a flexible material. (a) False (b) True
  34. 34.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.🧱 Which property matters most for an umbrella cover? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  36. 36.Which of these needs a heat insulator? (a) a switch contact (b) a magnifier lens (c) a water tank (d) a tea flask lining
  37. 37.🧱 Which property matters most for a spectacle lens? (a) waterproof (b) electrical conductor (c) heat insulator (d) transparent
  38. 38.Which of these needs a transparent material? (a) a switch contact (b) a yoga mat (c) an umbrella cover (d) a car windscreen
  39. 39.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  40. 40.True or false: the core of a wire needs an electrical conductor. (a) False (b) True

Answer key

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

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