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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 123 · 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) an insulator (b) a conductor
  2. 2.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cardboard (c) paper (d) cotton wool
  3. 3.Which of these needs a flexible material? (a) a magnifier lens (b) a boat hull (c) a window pane (d) a skipping rope
  4. 4.True or false: a switch contact needs a waterproof material. (a) True (b) False
  5. 5.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.Which of these needs a transparent material? (a) a spectacle lens (b) a yoga mat (c) a skipping rope (d) a cooking pot handle
  7. 7.🔍 Which is the odd one out? (a) brass (b) rubber (c) cotton cloth (d) dry wood
  8. 8.🧱 Which property matters most for the core of a wire? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
  9. 9.🧱 Which material is best for a window pane? (a) glass (b) steel (c) wood (d) brick
  10. 10.🧱 Which property matters most for a skipping rope? (a) waterproof (b) flexible (c) electrical conductor (d) transparent
  11. 11.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) iron (c) wood or plastic (d) copper
  12. 12.🧱 Which material is best for the core of an electric wire? (a) copper (b) rubber (c) glass (d) wood
  13. 13.Which of these needs a heat insulator? (a) the core of a wire (b) an oven glove (c) a switch contact (d) a roof sheet
  14. 14.Which of these needs a flexible material? (a) a raincoat (b) a car seat belt (c) a roof sheet (d) a plug pin
  15. 15.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  16. 16.🧱 Which property matters most for a water tank? (a) waterproof (b) flexible (c) transparent (d) electrical conductor
  17. 17.True or false: a window pane needs a heat insulator. (a) False (b) True
  18. 18.True or false: a plug pin needs a waterproof material. (a) True (b) False
  19. 19.🔍 Which is the odd one out? (a) iron (b) glass (c) aluminium (d) copper
  20. 20.True or false: an oven glove needs a waterproof material. (a) False (b) True
  21. 21.True or false: a car windscreen needs a transparent material. (a) False (b) True
  22. 22.🧱 Which property matters most for a car windscreen? (a) flexible (b) transparent (c) waterproof (d) heat insulator
  23. 23.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  24. 24.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.🧱 Which property matters most for a switch contact? (a) flexible (b) transparent (c) waterproof (d) electrical conductor
  26. 26.🔍 Which is the odd one out? (a) steel (b) aluminium (c) cotton cloth (d) brass
  27. 27.Which of these needs a transparent material? (a) a cooking pot handle (b) a roof sheet (c) a magnifier lens (d) a car seat belt
  28. 28.Which of these needs a waterproof material? (a) a hair band (b) a switch contact (c) a water tank (d) a skipping rope
  29. 29.🔍 Which is the odd one out? (a) copper (b) dry wood (c) rubber (d) glass
  30. 30.Which of these needs an electrical conductor? (a) a water tank (b) a spectacle lens (c) the core of a wire (d) an umbrella cover
  31. 31.Which of these needs an electrical conductor? (a) a water tank (b) a plug pin (c) a raincoat (d) a yoga mat
  32. 32.Which of these needs a transparent material? (a) an umbrella cover (b) a skipping rope (c) a hair band (d) a window pane
  33. 33.True or false: a water tank needs an electrical conductor. (a) True (b) False
  34. 34.🔍 Which is the odd one out? (a) iron (b) copper (c) rubber (d) aluminium
  35. 35.🧱 Which material is best for the bars inside concrete? (a) rubber (b) steel (c) plastic (d) glass
  36. 36.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  37. 37.True or false: a yoga mat needs a flexible material. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) rubber (b) graphite (c) dry wood (d) clay pottery
  39. 39.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  40. 40.True or false: a window pane needs a flexible material. (a) False (b) True

Answer key

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

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