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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 304 · 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.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  2. 2.Which of these needs a flexible material? (a) an umbrella cover (b) a car windscreen (c) a spectacle lens (d) a yoga mat
  3. 3.Which of these needs a flexible material? (a) a window pane (b) an oven glove (c) an umbrella cover (d) a skipping rope
  4. 4.Which of these needs a waterproof material? (a) the core of a wire (b) a yoga mat (c) a plug pin (d) a water tank
  5. 5.🔍 Which is the odd one out? (a) dry wood (b) rubber (c) copper (d) cotton cloth
  6. 6.🔍 Which is the odd one out? (a) copper (b) iron (c) graphite (d) cotton cloth
  7. 7.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) steel (d) plastic
  8. 8.Which of these needs an electrical conductor? (a) a skipping rope (b) a cooking pot handle (c) the core of a wire (d) a hair band
  9. 9.🧱 Which property matters most for a yoga mat? (a) heat insulator (b) waterproof (c) flexible (d) transparent
  10. 10.True or false: a boat hull needs a heat insulator. (a) False (b) True
  11. 11.True or false: a tea flask lining needs an electrical conductor. (a) True (b) False
  12. 12.🧱 Which property matters most for a spectacle lens? (a) electrical conductor (b) transparent (c) waterproof (d) flexible
  13. 13.True or false: an oven glove needs a heat insulator. (a) True (b) False
  14. 14.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) flexible (c) waterproof (d) heat insulator
  15. 15.True or false: a plug pin needs an electrical conductor. (a) True (b) False
  16. 16.🧱 Which material is best for the core of an electric wire? (a) wood (b) rubber (c) copper (d) glass
  17. 17.🧱 Which material is best for a cooking pot handle? (a) copper (b) wood or plastic (c) iron (d) aluminium
  18. 18.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🔍 Which is the odd one out? (a) cotton cloth (b) clay pottery (c) brass (d) plastic
  21. 21.True or false: a skipping rope needs a flexible material. (a) True (b) False
  22. 22.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.True or false: a hair band needs a heat insulator. (a) False (b) True
  24. 24.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.🧱 Which property matters most for a boat hull? (a) flexible (b) transparent (c) heat insulator (d) waterproof
  26. 26.Which of these needs a heat insulator? (a) a window pane (b) the core of a wire (c) a cooking pot handle (d) a hair band
  27. 27.🧱 Which property matters most for a roof sheet? (a) waterproof (b) transparent (c) heat insulator (d) electrical conductor
  28. 28.True or false: a roof sheet needs a flexible material. (a) False (b) True
  29. 29.🧱 Which property matters most for a skipping rope? (a) transparent (b) flexible (c) waterproof (d) electrical conductor
  30. 30.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🧱 Which property matters most for a car seat belt? (a) waterproof (b) transparent (c) electrical conductor (d) flexible
  32. 32.True or false: a car windscreen needs an electrical conductor. (a) True (b) False
  33. 33.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.Which of these needs an electrical conductor? (a) a magnifier lens (b) a yoga mat (c) an oven glove (d) a plug pin
  35. 35.True or false: an umbrella cover needs a waterproof material. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) clay pottery (b) steel (c) brass (d) graphite
  37. 37.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) electrical conductor (c) transparent (d) flexible
  38. 38.True or false: a water tank needs a waterproof material. (a) True (b) False
  39. 39.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  40. 40.🔍 Which is the odd one out? (a) clay pottery (b) plastic (c) iron (d) dry wood

Answer key

  1. True
  2. a yoga mat
  3. a skipping rope
  4. a water tank
  5. copper
  6. cotton cloth
  7. steel
  8. the core of a wire
  9. flexible
  10. False
  11. False
  12. transparent
  13. True
  14. electrical conductor
  15. True
  16. copper
  17. wood or plastic
  18. an insulator
  19. a conductor
  20. brass
  21. True
  22. a conductor
  23. False
  24. a conductor
  25. waterproof
  26. a cooking pot handle
  27. waterproof
  28. False
  29. flexible
  30. an insulator
  31. flexible
  32. False
  33. an insulator
  34. a plug pin
  35. True
  36. clay pottery
  37. waterproof
  38. True
  39. an insulator
  40. iron

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