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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 743 · 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 cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  5. 5.🧱 Which property matters most for a car windscreen? (a) flexible (b) transparent (c) waterproof (d) electrical conductor
  6. 6.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🔍 Which is the odd one out? (a) iron (b) aluminium (c) copper (d) cotton cloth
  8. 8.True or false: a window pane needs a transparent material. (a) False (b) True
  9. 9.🔍 Which is the odd one out? (a) iron (b) dry wood (c) steel (d) graphite
  10. 10.True or false: a raincoat needs a waterproof material. (a) True (b) False
  11. 11.Which of these needs an electrical conductor? (a) a cooking pot handle (b) an umbrella cover (c) a hair band (d) the core of a wire
  12. 12.True or false: a hair band needs a flexible material. (a) True (b) False
  13. 13.Which of these needs a heat insulator? (a) a cooking pot handle (b) the core of a wire (c) a hair band (d) a window pane
  14. 14.Which of these needs a flexible material? (a) a raincoat (b) a spectacle lens (c) a skipping rope (d) a roof sheet
  15. 15.🧱 Which material is best for a raincoat? (a) cardboard (b) cotton wool (c) paper (d) plastic-coated cloth
  16. 16.🧱 Which property matters most for a roof sheet? (a) flexible (b) transparent (c) heat insulator (d) waterproof
  17. 17.🔍 Which is the odd one out? (a) aluminium (b) copper (c) iron (d) glass
  18. 18.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  19. 19.🧱 Which material is best for the core of an electric wire? (a) wood (b) glass (c) rubber (d) copper
  20. 20.🧱 Which property matters most for a yoga mat? (a) flexible (b) transparent (c) heat insulator (d) waterproof
  21. 21.True or false: a car windscreen needs a transparent material. (a) False (b) True
  22. 22.🔍 Which is the odd one out? (a) cotton cloth (b) rubber (c) glass (d) copper
  23. 23.🧱 Which property matters most for a skipping rope? (a) electrical conductor (b) transparent (c) heat insulator (d) flexible
  24. 24.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.Which of these needs an electrical conductor? (a) a tea flask lining (b) a car windscreen (c) a switch contact (d) a boat hull
  26. 26.True or false: the core of a wire needs a waterproof material. (a) False (b) True
  27. 27.🧱 Which property matters most for a raincoat? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible
  28. 28.🔍 Which is the odd one out? (a) aluminium (b) plastic (c) steel (d) graphite
  29. 29.🧱 Which property matters most for an oven glove? (a) electrical conductor (b) waterproof (c) transparent (d) heat insulator
  30. 30.🧱 Which property matters most for a hair band? (a) heat insulator (b) waterproof (c) flexible (d) electrical conductor
  31. 31.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) plastic (d) steel
  32. 32.🔍 Which is the odd one out? (a) clay pottery (b) graphite (c) cotton cloth (d) plastic
  33. 33.🧱 Which property matters most for a plug pin? (a) electrical conductor (b) transparent (c) flexible (d) waterproof
  34. 34.True or false: a window pane needs a heat insulator. (a) False (b) True
  35. 35.True or false: a raincoat needs an electrical conductor. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) cotton cloth (b) aluminium (c) rubber (d) plastic
  37. 37.True or false: a spectacle lens needs a transparent material. (a) True (b) False
  38. 38.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.🧱 Which property matters most for a water tank? (a) electrical conductor (b) transparent (c) waterproof (d) flexible
  40. 40.True or false: a tea flask lining needs a waterproof material. (a) True (b) False

Answer key

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

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