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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 138 · 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 iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🧱 Which property matters most for a skipping rope? (a) waterproof (b) heat insulator (c) transparent (d) flexible
  3. 3.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.🧱 Which property matters most for a boat hull? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  5. 5.🧱 Which material is best for a cooking pot handle? (a) copper (b) iron (c) wood or plastic (d) aluminium
  6. 6.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  7. 7.True or false: a cooking pot handle needs a transparent material. (a) False (b) True
  8. 8.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.True or false: a car seat belt needs an electrical conductor. (a) True (b) False
  10. 10.🧱 Which material is best for the core of an electric wire? (a) glass (b) rubber (c) wood (d) copper
  11. 11.True or false: a car seat belt needs a flexible material. (a) False (b) True
  12. 12.🧱 Which material is best for a window pane? (a) glass (b) steel (c) wood (d) brick
  13. 13.True or false: a raincoat needs a heat insulator. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) rubber (b) aluminium (c) plastic (d) clay pottery
  15. 15.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  16. 16.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.True or false: a window pane needs a waterproof material. (a) True (b) False
  18. 18.True or false: a magnifier lens needs a heat insulator. (a) True (b) False
  19. 19.True or false: a raincoat needs a waterproof material. (a) False (b) True
  20. 20.🧱 Which material is best for the bars inside concrete? (a) rubber (b) glass (c) plastic (d) steel
  21. 21.True or false: a tea flask lining needs a transparent material. (a) False (b) True
  22. 22.🔍 Which is the odd one out? (a) plastic (b) brass (c) graphite (d) copper
  23. 23.Which of these needs a flexible material? (a) a magnifier lens (b) a car windscreen (c) a boat hull (d) a skipping rope
  24. 24.🧱 Which property matters most for a plug pin? (a) transparent (b) electrical conductor (c) heat insulator (d) flexible
  25. 25.🧱 Which property matters most for a car windscreen? (a) heat insulator (b) waterproof (c) transparent (d) flexible
  26. 26.Which of these needs a waterproof material? (a) a tea flask lining (b) a raincoat (c) a magnifier lens (d) a cooking pot handle
  27. 27.Which of these needs an electrical conductor? (a) a cooking pot handle (b) a yoga mat (c) the core of a wire (d) an umbrella cover
  28. 28.True or false: an oven glove needs a heat insulator. (a) False (b) True
  29. 29.🧱 Which property matters most for the core of a wire? (a) heat insulator (b) electrical conductor (c) flexible (d) transparent
  30. 30.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) plastic-coated cloth (d) cardboard
  31. 31.🧱 Which property matters most for a roof sheet? (a) heat insulator (b) waterproof (c) transparent (d) electrical conductor
  32. 32.Which of these needs a transparent material? (a) an oven glove (b) a water tank (c) an umbrella cover (d) a window pane
  33. 33.🧱 Which property matters most for a switch contact? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  34. 34.Which of these needs a flexible material? (a) an umbrella cover (b) a spectacle lens (c) a hair band (d) a water tank
  35. 35.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  36. 36.🔍 Which is the odd one out? (a) rubber (b) iron (c) glass (d) dry wood
  37. 37.🧱 Which property matters most for a water tank? (a) waterproof (b) electrical conductor (c) heat insulator (d) flexible
  38. 38.True or false: a cooking pot handle needs a heat insulator. (a) False (b) True
  39. 39.True or false: a hair band needs an electrical conductor. (a) True (b) False
  40. 40.🧱 Which property matters most for an umbrella cover? (a) transparent (b) waterproof (c) flexible (d) electrical conductor

Answer key

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

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