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Engineering Worksheet: Materials

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

Answer key

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

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