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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 380 · 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 raincoat? (a) flexible (b) transparent (c) heat insulator (d) waterproof
  2. 2.True or false: a skipping rope needs a flexible material. (a) True (b) False
  3. 3.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) wood (d) copper
  5. 5.True or false: a hair band needs an electrical conductor. (a) True (b) False
  6. 6.True or false: a hair band needs a flexible material. (a) True (b) False
  7. 7.🧱 Which material is best for a raincoat? (a) cardboard (b) cotton wool (c) plastic-coated cloth (d) paper
  8. 8.Which of these needs a waterproof material? (a) a plug pin (b) a car seat belt (c) an umbrella cover (d) a magnifier lens
  9. 9.Which of these needs a waterproof material? (a) a yoga mat (b) an oven glove (c) a boat hull (d) a window pane
  10. 10.🔍 Which is the odd one out? (a) graphite (b) aluminium (c) iron (d) rubber
  11. 11.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🧱 Which property matters most for a plug pin? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  15. 15.🧱 Which property matters most for an umbrella cover? (a) transparent (b) heat insulator (c) waterproof (d) electrical conductor
  16. 16.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  18. 18.🔍 Which is the odd one out? (a) copper (b) plastic (c) aluminium (d) brass
  19. 19.🧱 Which property matters most for a switch contact? (a) heat insulator (b) electrical conductor (c) waterproof (d) transparent
  20. 20.True or false: a tea flask lining needs an electrical conductor. (a) False (b) True
  21. 21.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  22. 22.True or false: a switch contact needs a waterproof material. (a) True (b) False
  23. 23.Which of these needs a transparent material? (a) a spectacle lens (b) an oven glove (c) a raincoat (d) a yoga mat
  24. 24.True or false: a car windscreen needs an electrical conductor. (a) True (b) False
  25. 25.🧱 Which property matters most for a yoga mat? (a) waterproof (b) transparent (c) flexible (d) electrical conductor
  26. 26.🧱 Which property matters most for a boat hull? (a) waterproof (b) transparent (c) electrical conductor (d) flexible
  27. 27.True or false: a window pane needs a heat insulator. (a) True (b) False
  28. 28.Which of these needs a transparent material? (a) an oven glove (b) a car windscreen (c) the core of a wire (d) a cooking pot handle
  29. 29.🧱 Which property matters most for a car seat belt? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  30. 30.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🧱 Which material is best for a window pane? (a) brick (b) steel (c) wood (d) glass
  32. 32.True or false: a raincoat needs a waterproof material. (a) True (b) False
  33. 33.🧱 Which property matters most for a hair band? (a) waterproof (b) heat insulator (c) electrical conductor (d) flexible
  34. 34.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) electrical conductor (c) transparent (d) heat insulator
  35. 35.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) plastic (d) steel
  36. 36.Which of these needs a transparent material? (a) a hair band (b) a magnifier lens (c) a water tank (d) an umbrella cover
  37. 37.🔍 Which is the odd one out? (a) copper (b) dry wood (c) iron (d) graphite
  38. 38.Which of these needs a flexible material? (a) a car seat belt (b) a magnifier lens (c) a spectacle lens (d) a roof sheet
  39. 39.🧱 Which material is best for a cooking pot handle? (a) copper (b) iron (c) wood or plastic (d) aluminium
  40. 40.True or false: an umbrella cover needs a transparent material. (a) True (b) False

Answer key

  1. waterproof
  2. True
  3. a conductor
  4. copper
  5. False
  6. True
  7. plastic-coated cloth
  8. an umbrella cover
  9. a boat hull
  10. rubber
  11. a conductor
  12. an insulator
  13. a conductor
  14. electrical conductor
  15. waterproof
  16. a conductor
  17. a conductor
  18. plastic
  19. electrical conductor
  20. False
  21. an insulator
  22. False
  23. a spectacle lens
  24. False
  25. flexible
  26. waterproof
  27. False
  28. a car windscreen
  29. flexible
  30. an insulator
  31. glass
  32. True
  33. flexible
  34. heat insulator
  35. steel
  36. a magnifier lens
  37. dry wood
  38. a car seat belt
  39. wood or plastic
  40. False

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