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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 374 · 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 hair band? (a) heat insulator (b) waterproof (c) transparent (d) flexible
  2. 2.Which of these needs an electrical conductor? (a) an oven glove (b) the core of a wire (c) an umbrella cover (d) a magnifier lens
  3. 3.🔍 Which is the odd one out? (a) plastic (b) dry wood (c) clay pottery (d) iron
  4. 4.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) iron (c) aluminium (d) copper
  6. 6.🧱 Which property matters most for a car seat belt? (a) flexible (b) transparent (c) heat insulator (d) electrical conductor
  7. 7.Which of these needs a flexible material? (a) a plug pin (b) a tea flask lining (c) a yoga mat (d) a switch contact
  8. 8.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.True or false: an oven glove needs an electrical conductor. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) glass (b) iron (c) copper (d) brass
  11. 11.🧱 Which material is best for the core of an electric wire? (a) copper (b) glass (c) rubber (d) wood
  12. 12.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  14. 14.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) transparent (c) waterproof (d) flexible
  15. 15.🔍 Which is the odd one out? (a) rubber (b) aluminium (c) cotton cloth (d) glass
  16. 16.True or false: the core of a wire needs a flexible material. (a) True (b) False
  17. 17.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  18. 18.🔍 Which is the odd one out? (a) cotton cloth (b) aluminium (c) graphite (d) brass
  19. 19.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🧱 Which property matters most for a boat hull? (a) flexible (b) electrical conductor (c) heat insulator (d) waterproof
  21. 21.Which of these needs an electrical conductor? (a) a boat hull (b) a roof sheet (c) an oven glove (d) a switch contact
  22. 22.🧱 Which property matters most for a skipping rope? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  23. 23.Which of these needs a waterproof material? (a) a hair band (b) a raincoat (c) a plug pin (d) a skipping rope
  24. 24.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) transparent (c) heat insulator (d) waterproof
  26. 26.True or false: a car seat belt needs a flexible material. (a) True (b) False
  27. 27.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  28. 28.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.🧱 Which property matters most for a tea flask lining? (a) heat insulator (b) electrical conductor (c) transparent (d) waterproof
  30. 30.🧱 Which material is best for a raincoat? (a) cotton wool (b) paper (c) plastic-coated cloth (d) cardboard
  31. 31.True or false: a water tank needs an electrical conductor. (a) True (b) False
  32. 32.True or false: a magnifier lens needs an electrical conductor. (a) True (b) False
  33. 33.🧱 Which property matters most for an oven glove? (a) transparent (b) waterproof (c) flexible (d) heat insulator
  34. 34.True or false: a roof sheet needs a waterproof material. (a) False (b) True
  35. 35.🔍 Which is the odd one out? (a) iron (b) brass (c) steel (d) clay pottery
  36. 36.Which of these needs a flexible material? (a) a water tank (b) a spectacle lens (c) a hair band (d) a roof sheet
  37. 37.🧱 Which property matters most for a magnifier lens? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  38. 38.🔍 Which is the odd one out? (a) steel (b) glass (c) plastic (d) dry wood
  39. 39.True or false: a skipping rope needs an electrical conductor. (a) True (b) False
  40. 40.True or false: a roof sheet needs a flexible material. (a) False (b) True

Answer key

  1. flexible
  2. the core of a wire
  3. iron
  4. an insulator
  5. wood or plastic
  6. flexible
  7. a yoga mat
  8. a conductor
  9. False
  10. glass
  11. copper
  12. a conductor
  13. True
  14. transparent
  15. aluminium
  16. False
  17. an insulator
  18. cotton cloth
  19. a conductor
  20. waterproof
  21. a switch contact
  22. flexible
  23. a raincoat
  24. a conductor
  25. electrical conductor
  26. True
  27. an insulator
  28. an insulator
  29. heat insulator
  30. plastic-coated cloth
  31. False
  32. False
  33. heat insulator
  34. True
  35. clay pottery
  36. a hair band
  37. transparent
  38. steel
  39. False
  40. False

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