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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 479 · 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 tea flask lining needs a waterproof material. (a) False (b) True
  2. 2.True or false: an umbrella cover needs a flexible material. (a) False (b) True
  3. 3.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🔍 Which is the odd one out? (a) plastic (b) cotton cloth (c) aluminium (d) glass
  6. 6.🧱 Which property matters most for a switch contact? (a) waterproof (b) heat insulator (c) electrical conductor (d) flexible
  7. 7.🧱 Which property matters most for an oven glove? (a) waterproof (b) transparent (c) electrical conductor (d) heat insulator
  8. 8.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.🧱 Which material is best for the bars inside concrete? (a) glass (b) steel (c) plastic (d) rubber
  10. 10.🧱 Which material is best for a cooking pot handle? (a) iron (b) copper (c) wood or plastic (d) aluminium
  11. 11.Which of these needs a flexible material? (a) a yoga mat (b) the core of a wire (c) a boat hull (d) a spectacle lens
  12. 12.🔍 Which is the odd one out? (a) dry wood (b) iron (c) glass (d) plastic
  13. 13.🧱 Which property matters most for a boat hull? (a) heat insulator (b) transparent (c) flexible (d) waterproof
  14. 14.🧱 Which property matters most for a skipping rope? (a) flexible (b) heat insulator (c) electrical conductor (d) waterproof
  15. 15.Which of these needs a transparent material? (a) a boat hull (b) a car windscreen (c) an umbrella cover (d) a raincoat
  16. 16.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🧱 Which property matters most for a tea flask lining? (a) flexible (b) waterproof (c) electrical conductor (d) heat insulator
  18. 18.🧱 Which property matters most for a magnifier lens? (a) waterproof (b) transparent (c) flexible (d) electrical conductor
  19. 19.🔍 Which is the odd one out? (a) graphite (b) iron (c) copper (d) glass
  20. 20.🔍 Which is the odd one out? (a) brass (b) rubber (c) aluminium (d) steel
  21. 21.Which of these needs a heat insulator? (a) a tea flask lining (b) a switch contact (c) a roof sheet (d) a water tank
  22. 22.🔍 Which is the odd one out? (a) rubber (b) dry wood (c) plastic (d) copper
  23. 23.Which of these needs a flexible material? (a) a boat hull (b) a car windscreen (c) a switch contact (d) a car seat belt
  24. 24.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.True or false: a hair band needs a flexible material. (a) False (b) True
  27. 27.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.🔍 Which is the odd one out? (a) graphite (b) steel (c) copper (d) dry wood
  29. 29.True or false: a car seat belt needs a transparent material. (a) True (b) False
  30. 30.Which of these needs an electrical conductor? (a) a car seat belt (b) a plug pin (c) a window pane (d) an umbrella cover
  31. 31.🧱 Which material is best for a window pane? (a) brick (b) glass (c) steel (d) wood
  32. 32.🔍 Which is the odd one out? (a) aluminium (b) iron (c) cotton cloth (d) brass
  33. 33.True or false: a car windscreen needs a transparent material. (a) True (b) False
  34. 34.🧱 Which material is best for the core of an electric wire? (a) rubber (b) copper (c) glass (d) wood
  35. 35.Which of these needs a transparent material? (a) a tea flask lining (b) a spectacle lens (c) a car seat belt (d) a hair band
  36. 36.Which of these needs a transparent material? (a) a switch contact (b) a window pane (c) a yoga mat (d) a raincoat
  37. 37.🔍 Which is the odd one out? (a) rubber (b) glass (c) plastic (d) graphite
  38. 38.Which of these needs a heat insulator? (a) an umbrella cover (b) a cooking pot handle (c) a roof sheet (d) a magnifier lens
  39. 39.Which of these needs a waterproof material? (a) a car seat belt (b) a hair band (c) a roof sheet (d) the core of a wire
  40. 40.🔍 Which is the odd one out? (a) brass (b) steel (c) graphite (d) clay pottery

Answer key

  1. False
  2. False
  3. a conductor
  4. a conductor
  5. aluminium
  6. electrical conductor
  7. heat insulator
  8. an insulator
  9. steel
  10. wood or plastic
  11. a yoga mat
  12. iron
  13. waterproof
  14. flexible
  15. a car windscreen
  16. a conductor
  17. heat insulator
  18. transparent
  19. glass
  20. rubber
  21. a tea flask lining
  22. copper
  23. a car seat belt
  24. an insulator
  25. an insulator
  26. True
  27. an insulator
  28. dry wood
  29. False
  30. a plug pin
  31. glass
  32. cotton cloth
  33. True
  34. copper
  35. a spectacle lens
  36. a window pane
  37. graphite
  38. a cooking pot handle
  39. a roof sheet
  40. clay pottery

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