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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 950 · 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 material is best for the core of an electric wire? (a) copper (b) rubber (c) wood (d) glass
  2. 2.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.🔍 Which is the odd one out? (a) aluminium (b) copper (c) iron (d) clay pottery
  4. 4.🧱 Which material is best for the bars inside concrete? (a) rubber (b) plastic (c) glass (d) steel
  5. 5.🧱 Which property matters most for a skipping rope? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  6. 6.🧱 Which material is best for a raincoat? (a) cardboard (b) paper (c) plastic-coated cloth (d) cotton wool
  7. 7.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.Which of these needs a waterproof material? (a) a plug pin (b) a car seat belt (c) a cooking pot handle (d) a roof sheet
  9. 9.🧱 Which property matters most for a boat hull? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  10. 10.🔍 Which is the odd one out? (a) steel (b) copper (c) iron (d) plastic
  11. 11.🧱 Which property matters most for a plug pin? (a) electrical conductor (b) waterproof (c) flexible (d) heat insulator
  12. 12.🔍 Which is the odd one out? (a) brass (b) cotton cloth (c) graphite (d) iron
  13. 13.Which of these needs a heat insulator? (a) a water tank (b) a skipping rope (c) a tea flask lining (d) a car seat belt
  14. 14.True or false: a water tank needs a heat insulator. (a) False (b) True
  15. 15.Which of these needs an electrical conductor? (a) a spectacle lens (b) a raincoat (c) a window pane (d) the core of a wire
  16. 16.🧱 Which property matters most for a water tank? (a) waterproof (b) flexible (c) electrical conductor (d) transparent
  17. 17.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  18. 18.True or false: a window pane needs a flexible material. (a) False (b) True
  19. 19.🧱 Which property matters most for an umbrella cover? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  20. 20.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.Which of these needs a transparent material? (a) a skipping rope (b) a water tank (c) a magnifier lens (d) a raincoat
  22. 22.🧱 Which property matters most for a window pane? (a) flexible (b) waterproof (c) electrical conductor (d) transparent
  23. 23.🧱 Which property matters most for a magnifier lens? (a) electrical conductor (b) transparent (c) flexible (d) waterproof
  24. 24.🧱 Which material is best for a window pane? (a) wood (b) glass (c) steel (d) brick
  25. 25.Which of these needs a flexible material? (a) a car seat belt (b) a plug pin (c) a window pane (d) a roof sheet
  26. 26.True or false: a tea flask lining needs a waterproof material. (a) False (b) True
  27. 27.🧱 Which property matters most for a hair band? (a) flexible (b) heat insulator (c) waterproof (d) transparent
  28. 28.True or false: a yoga mat needs a flexible material. (a) True (b) False
  29. 29.Which of these needs a transparent material? (a) a raincoat (b) a switch contact (c) a boat hull (d) a window pane
  30. 30.🔍 Which is the odd one out? (a) cotton cloth (b) rubber (c) dry wood (d) brass
  31. 31.🧱 Which property matters most for a car seat belt? (a) transparent (b) flexible (c) waterproof (d) heat insulator
  32. 32.🧱 Which property matters most for the core of a wire? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible
  33. 33.True or false: a yoga mat needs a waterproof material. (a) True (b) False
  34. 34.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.True or false: a spectacle lens needs a transparent material. (a) False (b) True
  36. 36.Which of these needs an electrical conductor? (a) a cooking pot handle (b) a skipping rope (c) a switch contact (d) a spectacle lens
  37. 37.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.True or false: a tea flask lining needs a flexible material. (a) False (b) True
  39. 39.🧱 Which material is best for a cooking pot handle? (a) copper (b) wood or plastic (c) aluminium (d) iron
  40. 40.Which of these needs a heat insulator? (a) an umbrella cover (b) an oven glove (c) a skipping rope (d) a car seat belt

Answer key

  1. copper
  2. a conductor
  3. clay pottery
  4. steel
  5. flexible
  6. plastic-coated cloth
  7. a conductor
  8. a roof sheet
  9. waterproof
  10. plastic
  11. electrical conductor
  12. cotton cloth
  13. a tea flask lining
  14. False
  15. the core of a wire
  16. waterproof
  17. a conductor
  18. False
  19. waterproof
  20. an insulator
  21. a magnifier lens
  22. transparent
  23. transparent
  24. glass
  25. a car seat belt
  26. False
  27. flexible
  28. True
  29. a window pane
  30. brass
  31. flexible
  32. electrical conductor
  33. False
  34. an insulator
  35. True
  36. a switch contact
  37. an insulator
  38. False
  39. wood or plastic
  40. an oven glove

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