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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 220 · 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 switch contact? (a) flexible (b) waterproof (c) transparent (d) electrical conductor
  2. 2.True or false: a hair band needs a heat insulator. (a) False (b) True
  3. 3.Which of these needs an electrical conductor? (a) a car seat belt (b) an umbrella cover (c) a plug pin (d) a boat hull
  4. 4.True or false: a car seat belt needs a heat insulator. (a) False (b) True
  5. 5.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) steel (d) glass
  6. 6.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  7. 7.🧱 Which property matters most for a plug pin? (a) transparent (b) flexible (c) waterproof (d) electrical conductor
  8. 8.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.Which of these needs an electrical conductor? (a) a switch contact (b) a window pane (c) a raincoat (d) a cooking pot handle
  10. 10.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) glass (d) rubber
  11. 11.True or false: a hair band needs a waterproof material. (a) False (b) True
  12. 12.Which of these needs a heat insulator? (a) a raincoat (b) a plug pin (c) a cooking pot handle (d) a car windscreen
  13. 13.🧱 Which property matters most for an umbrella cover? (a) flexible (b) electrical conductor (c) waterproof (d) transparent
  14. 14.🧱 Which property matters most for a spectacle lens? (a) waterproof (b) flexible (c) transparent (d) heat insulator
  15. 15.🧱 Which property matters most for a skipping rope? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  16. 16.True or false: a water tank needs a waterproof material. (a) False (b) True
  17. 17.🧱 Which property matters most for a magnifier lens? (a) waterproof (b) electrical conductor (c) heat insulator (d) transparent
  18. 18.🔍 Which is the odd one out? (a) plastic (b) graphite (c) dry wood (d) rubber
  19. 19.🔍 Which is the odd one out? (a) rubber (b) iron (c) copper (d) brass
  20. 20.🔍 Which is the odd one out? (a) rubber (b) cotton cloth (c) steel (d) glass
  21. 21.🔍 Which is the odd one out? (a) aluminium (b) brass (c) glass (d) iron
  22. 22.True or false: a window pane needs a transparent material. (a) False (b) True
  23. 23.🔍 Which is the odd one out? (a) brass (b) rubber (c) clay pottery (d) dry wood
  24. 24.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.🧱 Which property matters most for a roof sheet? (a) waterproof (b) transparent (c) heat insulator (d) electrical conductor
  26. 26.🔍 Which is the odd one out? (a) copper (b) iron (c) brass (d) cotton cloth
  27. 27.🧱 Which property matters most for a yoga mat? (a) flexible (b) waterproof (c) heat insulator (d) transparent
  28. 28.🔍 Which is the odd one out? (a) dry wood (b) copper (c) iron (d) brass
  29. 29.Which of these needs a waterproof material? (a) the core of a wire (b) a window pane (c) a skipping rope (d) a boat hull
  30. 30.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🧱 Which property matters most for a raincoat? (a) electrical conductor (b) flexible (c) waterproof (d) heat insulator
  33. 33.🧱 Which property matters most for a hair band? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  34. 34.True or false: a hair band needs a flexible material. (a) True (b) False
  35. 35.🔍 Which is the odd one out? (a) iron (b) copper (c) aluminium (d) plastic
  36. 36.🧱 Which property matters most for a window pane? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  37. 37.🧱 Which material is best for a window pane? (a) brick (b) steel (c) wood (d) glass
  38. 38.Which of these needs a waterproof material? (a) an oven glove (b) a car windscreen (c) a plug pin (d) a raincoat
  39. 39.Which of these needs a flexible material? (a) a skipping rope (b) an oven glove (c) a tea flask lining (d) a spectacle lens
  40. 40.True or false: a car windscreen needs a transparent material. (a) False (b) True

Answer key

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

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