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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 128 · 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 clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.🧱 Which property matters most for a car windscreen? (a) flexible (b) transparent (c) electrical conductor (d) heat insulator
  3. 3.True or false: the core of a wire needs a waterproof material. (a) True (b) False
  4. 4.🧱 Which material is best for the bars inside concrete? (a) steel (b) plastic (c) glass (d) rubber
  5. 5.True or false: a roof sheet needs a heat insulator. (a) True (b) False
  6. 6.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  7. 7.Which of these needs a waterproof material? (a) a plug pin (b) a yoga mat (c) a boat hull (d) a skipping rope
  8. 8.True or false: a magnifier lens needs a flexible material. (a) True (b) False
  9. 9.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  11. 11.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.🧱 Which property matters most for a plug pin? (a) waterproof (b) heat insulator (c) transparent (d) electrical conductor
  13. 13.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🔍 Which is the odd one out? (a) steel (b) glass (c) iron (d) copper
  15. 15.🧱 Which property matters most for a spectacle lens? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
  16. 16.🔍 Which is the odd one out? (a) brass (b) plastic (c) graphite (d) steel
  17. 17.True or false: a raincoat needs an electrical conductor. (a) False (b) True
  18. 18.🔍 Which is the odd one out? (a) cotton cloth (b) rubber (c) brass (d) clay pottery
  19. 19.🔍 Which is the odd one out? (a) rubber (b) cotton cloth (c) steel (d) plastic
  20. 20.True or false: a boat hull needs a flexible material. (a) True (b) False
  21. 21.Which of these needs a transparent material? (a) a spectacle lens (b) an umbrella cover (c) a roof sheet (d) a hair band
  22. 22.True or false: a boat hull needs an electrical conductor. (a) True (b) False
  23. 23.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) paper (c) cotton wool (d) cardboard
  24. 24.🧱 Which material is best for the core of an electric wire? (a) wood (b) copper (c) glass (d) rubber
  25. 25.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible
  26. 26.🧱 Which property matters most for a car seat belt? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
  27. 27.True or false: a raincoat needs a heat insulator. (a) True (b) False
  28. 28.🔍 Which is the odd one out? (a) brass (b) copper (c) clay pottery (d) aluminium
  29. 29.🧱 Which property matters most for a hair band? (a) electrical conductor (b) heat insulator (c) flexible (d) waterproof
  30. 30.Which of these needs a flexible material? (a) a roof sheet (b) a hair band (c) the core of a wire (d) a boat hull
  31. 31.Which of these needs an electrical conductor? (a) a hair band (b) an umbrella cover (c) a plug pin (d) a spectacle lens
  32. 32.🧱 Which property matters most for a raincoat? (a) waterproof (b) transparent (c) flexible (d) heat insulator
  33. 33.🧱 Which property matters most for an oven glove? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  34. 34.True or false: a tea flask lining needs a waterproof material. (a) True (b) False
  35. 35.🧱 Which property matters most for a skipping rope? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  36. 36.Which of these needs a transparent material? (a) a cooking pot handle (b) a magnifier lens (c) the core of a wire (d) a roof sheet
  37. 37.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🧱 Which property matters most for a yoga mat? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  39. 39.🧱 Which property matters most for a water tank? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  40. 40.Which of these needs a heat insulator? (a) the core of a wire (b) a cooking pot handle (c) a spectacle lens (d) a yoga mat

Answer key

  1. an insulator
  2. transparent
  3. False
  4. steel
  5. False
  6. a conductor
  7. a boat hull
  8. False
  9. an insulator
  10. a conductor
  11. an insulator
  12. electrical conductor
  13. a conductor
  14. glass
  15. transparent
  16. plastic
  17. False
  18. brass
  19. steel
  20. False
  21. a spectacle lens
  22. False
  23. plastic-coated cloth
  24. copper
  25. waterproof
  26. flexible
  27. False
  28. clay pottery
  29. flexible
  30. a hair band
  31. a plug pin
  32. waterproof
  33. heat insulator
  34. False
  35. flexible
  36. a magnifier lens
  37. an insulator
  38. flexible
  39. waterproof
  40. a cooking pot handle

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