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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 409 · 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) paper (b) cardboard (c) cotton wool (d) plastic-coated cloth
  2. 2.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) glass (d) rubber
  3. 3.🧱 Which material is best for a window pane? (a) steel (b) brick (c) wood (d) glass
  4. 4.True or false: a raincoat needs a transparent material. (a) True (b) False
  5. 5.Which of these needs an electrical conductor? (a) the core of a wire (b) a boat hull (c) a cooking pot handle (d) a car windscreen
  6. 6.🧱 Which material is best for a cooking pot handle? (a) copper (b) wood or plastic (c) iron (d) aluminium
  7. 7.🧱 Which property matters most for the core of a wire? (a) transparent (b) flexible (c) heat insulator (d) electrical conductor
  8. 8.Which of these needs a transparent material? (a) a car seat belt (b) a plug pin (c) a raincoat (d) a spectacle lens
  9. 9.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  10. 10.Which of these needs a waterproof material? (a) a hair band (b) a plug pin (c) a boat hull (d) a cooking pot handle
  11. 11.🔍 Which is the odd one out? (a) aluminium (b) steel (c) clay pottery (d) graphite
  12. 12.True or false: a car windscreen needs a flexible material. (a) False (b) True
  13. 13.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.True or false: a window pane needs an electrical conductor. (a) True (b) False
  15. 15.🧱 Which property matters most for an umbrella cover? (a) electrical conductor (b) transparent (c) flexible (d) waterproof
  16. 16.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.Which of these needs a heat insulator? (a) a plug pin (b) the core of a wire (c) a car windscreen (d) a tea flask lining
  18. 18.True or false: a water tank needs a waterproof material. (a) False (b) True
  19. 19.True or false: an umbrella cover needs a heat insulator. (a) False (b) True
  20. 20.True or false: a raincoat needs a waterproof material. (a) False (b) True
  21. 21.True or false: a magnifier lens needs an electrical conductor. (a) True (b) False
  22. 22.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) transparent (c) waterproof (d) electrical conductor
  23. 23.🔍 Which is the odd one out? (a) cotton cloth (b) brass (c) dry wood (d) plastic
  24. 24.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) transparent (c) waterproof (d) flexible
  25. 25.🧱 Which property matters most for a tea flask lining? (a) transparent (b) heat insulator (c) flexible (d) electrical conductor
  26. 26.🧱 Which property matters most for a window pane? (a) flexible (b) heat insulator (c) transparent (d) electrical conductor
  27. 27.True or false: a skipping rope needs a flexible material. (a) False (b) True
  28. 28.Which of these needs a flexible material? (a) an oven glove (b) a magnifier lens (c) a window pane (d) a skipping rope
  29. 29.🔍 Which is the odd one out? (a) brass (b) iron (c) aluminium (d) cotton cloth
  30. 30.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  31. 31.True or false: a plug pin needs a transparent material. (a) True (b) False
  32. 32.Which of these needs a transparent material? (a) a yoga mat (b) an umbrella cover (c) a window pane (d) a cooking pot handle
  33. 33.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.Which of these needs a waterproof material? (a) a tea flask lining (b) a skipping rope (c) an umbrella cover (d) a switch contact
  36. 36.🧱 Which property matters most for a roof sheet? (a) flexible (b) heat insulator (c) waterproof (d) transparent
  37. 37.True or false: a boat hull needs a waterproof material. (a) True (b) False
  38. 38.🧱 Which property matters most for a yoga mat? (a) heat insulator (b) flexible (c) electrical conductor (d) transparent
  39. 39.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  40. 40.Which of these needs a flexible material? (a) a hair band (b) an umbrella cover (c) a plug pin (d) a window pane

Answer key

  1. plastic-coated cloth
  2. copper
  3. glass
  4. False
  5. the core of a wire
  6. wood or plastic
  7. electrical conductor
  8. a spectacle lens
  9. an insulator
  10. a boat hull
  11. clay pottery
  12. False
  13. an insulator
  14. False
  15. waterproof
  16. an insulator
  17. a tea flask lining
  18. True
  19. False
  20. True
  21. False
  22. transparent
  23. brass
  24. flexible
  25. heat insulator
  26. transparent
  27. True
  28. a skipping rope
  29. cotton cloth
  30. True
  31. False
  32. a window pane
  33. a conductor
  34. a conductor
  35. an umbrella cover
  36. waterproof
  37. True
  38. flexible
  39. a conductor
  40. a hair band

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