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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 658 · 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 is the odd one out? (a) dry wood (b) steel (c) copper (d) aluminium
  2. 2.🧱 Which property matters most for an umbrella cover? (a) heat insulator (b) waterproof (c) transparent (d) flexible
  3. 3.🔍 Which is the odd one out? (a) glass (b) rubber (c) plastic (d) brass
  4. 4.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.Which of these needs an electrical conductor? (a) a water tank (b) a roof sheet (c) an umbrella cover (d) a plug pin
  6. 6.🧱 Which material is best for the core of an electric wire? (a) glass (b) copper (c) wood (d) rubber
  7. 7.True or false: a window pane needs an electrical conductor. (a) False (b) True
  8. 8.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.True or false: a yoga mat needs a waterproof material. (a) True (b) False
  10. 10.🧱 Which property matters most for a tea flask lining? (a) heat insulator (b) waterproof (c) flexible (d) electrical conductor
  11. 11.🧱 Which property matters most for the core of a wire? (a) electrical conductor (b) transparent (c) heat insulator (d) waterproof
  12. 12.🧱 Which property matters most for a roof sheet? (a) heat insulator (b) flexible (c) waterproof (d) electrical conductor
  13. 13.True or false: an umbrella cover needs an electrical conductor. (a) True (b) False
  14. 14.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  15. 15.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  16. 16.True or false: a car seat belt needs a flexible material. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) iron (b) graphite (c) brass (d) plastic
  18. 18.🧱 Which property matters most for a hair band? (a) heat insulator (b) waterproof (c) flexible (d) transparent
  19. 19.🧱 Which property matters most for a water tank? (a) transparent (b) heat insulator (c) electrical conductor (d) waterproof
  20. 20.True or false: a raincoat needs an electrical conductor. (a) False (b) True
  21. 21.True or false: a raincoat needs a transparent material. (a) False (b) True
  22. 22.True or false: a roof sheet needs a waterproof material. (a) True (b) False
  23. 23.🔍 Which is the odd one out? (a) glass (b) dry wood (c) steel (d) plastic
  24. 24.Which of these needs a flexible material? (a) a roof sheet (b) a hair band (c) a boat hull (d) a magnifier lens
  25. 25.Which of these needs a transparent material? (a) a water tank (b) a yoga mat (c) a roof sheet (d) a magnifier lens
  26. 26.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  28. 28.Which of these needs a flexible material? (a) a yoga mat (b) a boat hull (c) a tea flask lining (d) a cooking pot handle
  29. 29.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.🧱 Which property matters most for a switch contact? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  31. 31.🧱 Which material is best for a window pane? (a) wood (b) glass (c) brick (d) steel
  32. 32.Which of these needs a transparent material? (a) an umbrella cover (b) a roof sheet (c) a window pane (d) a cooking pot handle
  33. 33.Which of these needs a waterproof material? (a) a magnifier lens (b) an umbrella cover (c) a spectacle lens (d) a car windscreen
  34. 34.🔍 Which is the odd one out? (a) glass (b) graphite (c) dry wood (d) cotton cloth
  35. 35.Which of these needs a heat insulator? (a) an umbrella cover (b) a plug pin (c) a tea flask lining (d) a roof sheet
  36. 36.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  37. 37.True or false: a yoga mat needs a transparent material. (a) False (b) True
  38. 38.🧱 Which property matters most for a spectacle lens? (a) flexible (b) waterproof (c) electrical conductor (d) transparent
  39. 39.True or false: a roof sheet needs a flexible material. (a) True (b) False
  40. 40.🧱 Which material is best for a raincoat? (a) paper (b) plastic-coated cloth (c) cotton wool (d) cardboard

Answer key

  1. dry wood
  2. waterproof
  3. brass
  4. a conductor
  5. a plug pin
  6. copper
  7. False
  8. a conductor
  9. False
  10. heat insulator
  11. electrical conductor
  12. waterproof
  13. False
  14. a conductor
  15. an insulator
  16. True
  17. plastic
  18. flexible
  19. waterproof
  20. False
  21. False
  22. True
  23. steel
  24. a hair band
  25. a magnifier lens
  26. a conductor
  27. a conductor
  28. a yoga mat
  29. an insulator
  30. electrical conductor
  31. glass
  32. a window pane
  33. an umbrella cover
  34. graphite
  35. a tea flask lining
  36. True
  37. False
  38. transparent
  39. False
  40. plastic-coated cloth

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