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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 540 · 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 skipping rope? (a) flexible (b) heat insulator (c) transparent (d) electrical conductor
  2. 2.🔍 Which is the odd one out? (a) dry wood (b) plastic (c) copper (d) cotton cloth
  3. 3.🧱 Which property matters most for the core of a wire? (a) heat insulator (b) transparent (c) waterproof (d) electrical conductor
  4. 4.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.Which of these needs a transparent material? (a) a spectacle lens (b) a skipping rope (c) a hair band (d) a water tank
  7. 7.Which of these needs a flexible material? (a) a plug pin (b) a hair band (c) a raincoat (d) a roof sheet
  8. 8.Which of these needs an electrical conductor? (a) a plug pin (b) a roof sheet (c) a spectacle lens (d) an umbrella cover
  9. 9.True or false: a cooking pot handle needs a heat insulator. (a) False (b) True
  10. 10.True or false: a spectacle lens needs a heat insulator. (a) True (b) False
  11. 11.🔍 Which is the odd one out? (a) brass (b) steel (c) clay pottery (d) aluminium
  12. 12.🔍 Which is the odd one out? (a) dry wood (b) brass (c) glass (d) plastic
  13. 13.True or false: a raincoat needs a waterproof material. (a) True (b) False
  14. 14.True or false: an oven glove needs a heat insulator. (a) False (b) True
  15. 15.Which of these needs a flexible material? (a) a spectacle lens (b) a window pane (c) a yoga mat (d) a roof sheet
  16. 16.True or false: a hair band needs a flexible material. (a) True (b) False
  17. 17.Which of these needs a transparent material? (a) a plug pin (b) a roof sheet (c) a window pane (d) a hair band
  18. 18.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  19. 19.🧱 Which property matters most for an umbrella cover? (a) heat insulator (b) transparent (c) waterproof (d) electrical conductor
  20. 20.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.True or false: a plug pin needs a transparent material. (a) False (b) True
  22. 22.🧱 Which material is best for a raincoat? (a) cotton wool (b) cardboard (c) paper (d) plastic-coated cloth
  23. 23.🔍 Which is the odd one out? (a) brass (b) plastic (c) graphite (d) steel
  24. 24.🔍 Which is the odd one out? (a) steel (b) cotton cloth (c) copper (d) brass
  25. 25.True or false: a switch contact needs an electrical conductor. (a) True (b) False
  26. 26.True or false: a hair band needs a waterproof material. (a) False (b) True
  27. 27.🧱 Which property matters most for a boat hull? (a) waterproof (b) heat insulator (c) electrical conductor (d) transparent
  28. 28.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) iron (c) wood or plastic (d) copper
  30. 30.🧱 Which material is best for the bars inside concrete? (a) glass (b) plastic (c) rubber (d) steel
  31. 31.Which of these needs an electrical conductor? (a) a window pane (b) a water tank (c) the core of a wire (d) a hair band
  32. 32.🧱 Which material is best for the core of an electric wire? (a) copper (b) glass (c) rubber (d) wood
  33. 33.True or false: a water tank needs a waterproof material. (a) True (b) False
  34. 34.True or false: a switch contact needs a transparent material. (a) False (b) True
  35. 35.Which of these needs a heat insulator? (a) the core of a wire (b) a tea flask lining (c) a window pane (d) a car windscreen
  36. 36.🧱 Which property matters most for an oven glove? (a) transparent (b) flexible (c) waterproof (d) heat insulator
  37. 37.True or false: an umbrella cover needs a heat insulator. (a) True (b) False
  38. 38.Which of these needs a waterproof material? (a) a tea flask lining (b) the core of a wire (c) a water tank (d) a yoga mat
  39. 39.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  40. 40.🔍 Which is the odd one out? (a) aluminium (b) iron (c) copper (d) glass

Answer key

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

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