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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 676 · 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 property matters most for a plug pin? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  2. 2.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.🧱 Which material is best for the core of an electric wire? (a) wood (b) glass (c) copper (d) rubber
  4. 4.Which of these needs a flexible material? (a) an umbrella cover (b) a plug pin (c) a car windscreen (d) a hair band
  5. 5.🔍 Which is the odd one out? (a) iron (b) plastic (c) glass (d) clay pottery
  6. 6.True or false: a switch contact needs a heat insulator. (a) True (b) False
  7. 7.🧱 Which property matters most for a spectacle lens? (a) waterproof (b) heat insulator (c) electrical conductor (d) transparent
  8. 8.Which of these needs a transparent material? (a) a magnifier lens (b) a roof sheet (c) the core of a wire (d) a water tank
  9. 9.True or false: a car seat belt needs a transparent material. (a) True (b) False
  10. 10.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.True or false: a spectacle lens needs a waterproof material. (a) False (b) True
  12. 12.Which of these needs a heat insulator? (a) a boat hull (b) a yoga mat (c) the core of a wire (d) a cooking pot handle
  13. 13.Which of these needs a waterproof material? (a) a tea flask lining (b) a hair band (c) a water tank (d) a cooking pot handle
  14. 14.True or false: a hair band needs a waterproof material. (a) True (b) False
  15. 15.🔍 Which is the odd one out? (a) rubber (b) graphite (c) steel (d) iron
  16. 16.🔍 Which is the odd one out? (a) graphite (b) dry wood (c) cotton cloth (d) clay pottery
  17. 17.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) plastic-coated cloth (d) cardboard
  18. 18.🔍 Which is the odd one out? (a) aluminium (b) graphite (c) cotton cloth (d) copper
  19. 19.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) electrical conductor (c) heat insulator (d) flexible
  20. 20.🔍 Which is the odd one out? (a) graphite (b) brass (c) plastic (d) aluminium
  21. 21.Which of these needs a transparent material? (a) the core of a wire (b) a car windscreen (c) a boat hull (d) a switch contact
  22. 22.True or false: a roof sheet needs an electrical conductor. (a) True (b) False
  23. 23.True or false: a spectacle lens needs a flexible material. (a) True (b) False
  24. 24.🧱 Which material is best for the bars inside concrete? (a) rubber (b) steel (c) glass (d) plastic
  25. 25.Which of these needs a flexible material? (a) a raincoat (b) a switch contact (c) a yoga mat (d) a water tank
  26. 26.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.True or false: a cooking pot handle needs a heat insulator. (a) False (b) True
  28. 28.🔍 Which is the odd one out? (a) plastic (b) clay pottery (c) cotton cloth (d) copper
  29. 29.Which of these needs an electrical conductor? (a) the core of a wire (b) an umbrella cover (c) a raincoat (d) a tea flask lining
  30. 30.Which of these needs a waterproof material? (a) a boat hull (b) a car windscreen (c) a skipping rope (d) a spectacle lens
  31. 31.🧱 Which material is best for a window pane? (a) wood (b) brick (c) steel (d) glass
  32. 32.🧱 Which property matters most for a skipping rope? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  33. 33.🧱 Which property matters most for a roof sheet? (a) transparent (b) waterproof (c) flexible (d) heat insulator
  34. 34.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.Which of these needs a waterproof material? (a) a plug pin (b) a skipping rope (c) a magnifier lens (d) an umbrella cover
  37. 37.🧱 Which property matters most for a yoga mat? (a) waterproof (b) heat insulator (c) flexible (d) electrical conductor
  38. 38.True or false: a boat hull needs a waterproof material. (a) True (b) False
  39. 39.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  40. 40.True or false: an oven glove needs a waterproof material. (a) True (b) False

Answer key

  1. electrical conductor
  2. an insulator
  3. copper
  4. a hair band
  5. iron
  6. False
  7. transparent
  8. a magnifier lens
  9. False
  10. a conductor
  11. False
  12. a cooking pot handle
  13. a water tank
  14. False
  15. rubber
  16. graphite
  17. plastic-coated cloth
  18. cotton cloth
  19. heat insulator
  20. plastic
  21. a car windscreen
  22. False
  23. False
  24. steel
  25. a yoga mat
  26. an insulator
  27. True
  28. copper
  29. the core of a wire
  30. a boat hull
  31. glass
  32. flexible
  33. waterproof
  34. a conductor
  35. a conductor
  36. an umbrella cover
  37. flexible
  38. True
  39. an insulator
  40. False

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