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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 430 · 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 is the odd one out? (a) copper (b) graphite (c) glass (d) iron
  3. 3.🧱 Which material is best for the bars inside concrete? (a) rubber (b) plastic (c) glass (d) steel
  4. 4.Which of these needs a flexible material? (a) a water tank (b) a car seat belt (c) a window pane (d) a raincoat
  5. 5.🔍 Which is the odd one out? (a) rubber (b) plastic (c) aluminium (d) dry wood
  6. 6.🔍 Which is the odd one out? (a) brass (b) copper (c) aluminium (d) cotton cloth
  7. 7.🧱 Which property matters most for a skipping rope? (a) heat insulator (b) transparent (c) flexible (d) electrical conductor
  8. 8.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.🧱 Which property matters most for a switch contact? (a) heat insulator (b) transparent (c) electrical conductor (d) flexible
  10. 10.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.Which of these needs a heat insulator? (a) a raincoat (b) an oven glove (c) a switch contact (d) a hair band
  12. 12.🧱 Which material is best for a window pane? (a) glass (b) wood (c) steel (d) brick
  13. 13.🔍 Which is the odd one out? (a) iron (b) brass (c) clay pottery (d) aluminium
  14. 14.🔍 Which is the odd one out? (a) steel (b) brass (c) rubber (d) aluminium
  15. 15.🧱 Which material is best for a raincoat? (a) cotton wool (b) cardboard (c) plastic-coated cloth (d) paper
  16. 16.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.🧱 Which material is best for the core of an electric wire? (a) copper (b) rubber (c) glass (d) wood
  18. 18.True or false: an umbrella cover needs a waterproof material. (a) False (b) True
  19. 19.True or false: a car windscreen needs a transparent material. (a) False (b) True
  20. 20.Which of these needs a transparent material? (a) a spectacle lens (b) a switch contact (c) an umbrella cover (d) an oven glove
  21. 21.Which of these needs a waterproof material? (a) a water tank (b) a plug pin (c) a magnifier lens (d) a spectacle lens
  22. 22.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  23. 23.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  24. 24.🔍 Which is the odd one out? (a) brass (b) graphite (c) steel (d) plastic
  25. 25.🧱 Which property matters most for a spectacle lens? (a) electrical conductor (b) transparent (c) waterproof (d) flexible
  26. 26.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🧱 Which property matters most for a car seat belt? (a) waterproof (b) electrical conductor (c) transparent (d) flexible
  28. 28.🔍 Which is the odd one out? (a) cotton cloth (b) dry wood (c) graphite (d) plastic
  29. 29.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.True or false: a raincoat needs a flexible material. (a) True (b) False
  31. 31.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🧱 Which material is best for a cooking pot handle? (a) iron (b) wood or plastic (c) copper (d) aluminium
  33. 33.True or false: a yoga mat needs a flexible material. (a) False (b) True
  34. 34.Which of these needs a flexible material? (a) a spectacle lens (b) a tea flask lining (c) a hair band (d) a cooking pot handle
  35. 35.True or false: the core of a wire needs a heat insulator. (a) False (b) True
  36. 36.True or false: a skipping rope needs a heat insulator. (a) True (b) False
  37. 37.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.🧱 Which property matters most for a car windscreen? (a) heat insulator (b) flexible (c) electrical conductor (d) transparent
  39. 39.Which of these needs a waterproof material? (a) a car windscreen (b) a magnifier lens (c) the core of a wire (d) an umbrella cover
  40. 40.True or false: a roof sheet needs a waterproof material. (a) True (b) False

Answer key

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

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