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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 153 · 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) a conductor (b) an insulator
  2. 2.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🔍 Which is the odd one out? (a) steel (b) copper (c) iron (d) dry wood
  4. 4.🔍 Which is the odd one out? (a) dry wood (b) plastic (c) steel (d) rubber
  5. 5.🧱 Which property matters most for a switch contact? (a) flexible (b) heat insulator (c) waterproof (d) electrical conductor
  6. 6.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) copper (d) wood
  7. 7.Which of these needs an electrical conductor? (a) an umbrella cover (b) a tea flask lining (c) a switch contact (d) a raincoat
  8. 8.Which of these needs a transparent material? (a) a switch contact (b) a boat hull (c) a water tank (d) a window pane
  9. 9.🧱 Which material is best for the bars inside concrete? (a) rubber (b) plastic (c) glass (d) steel
  10. 10.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.Which of these needs a transparent material? (a) a magnifier lens (b) a boat hull (c) a plug pin (d) a switch contact
  12. 12.🧱 Which material is best for a window pane? (a) steel (b) wood (c) glass (d) brick
  13. 13.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
  14. 14.Which of these needs a waterproof material? (a) a car seat belt (b) a switch contact (c) a magnifier lens (d) a boat hull
  15. 15.🔍 Which is the odd one out? (a) dry wood (b) plastic (c) cotton cloth (d) copper
  16. 16.Which of these needs an electrical conductor? (a) a roof sheet (b) a magnifier lens (c) a plug pin (d) a yoga mat
  17. 17.🔍 Which is the odd one out? (a) clay pottery (b) dry wood (c) cotton cloth (d) aluminium
  18. 18.🧱 Which property matters most for a plug pin? (a) waterproof (b) flexible (c) electrical conductor (d) heat insulator
  19. 19.🧱 Which property matters most for a magnifier lens? (a) waterproof (b) electrical conductor (c) heat insulator (d) transparent
  20. 20.🧱 Which material is best for a raincoat? (a) cotton wool (b) paper (c) plastic-coated cloth (d) cardboard
  21. 21.🧱 Which property matters most for a spectacle lens? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  22. 22.True or false: a cooking pot handle needs a flexible material. (a) True (b) False
  23. 23.True or false: a water tank needs a flexible material. (a) True (b) False
  24. 24.Which of these needs a flexible material? (a) a skipping rope (b) a raincoat (c) a water tank (d) a cooking pot handle
  25. 25.🔍 Which is the odd one out? (a) graphite (b) aluminium (c) cotton cloth (d) iron
  26. 26.True or false: a skipping rope needs an electrical conductor. (a) False (b) True
  27. 27.🧱 Which property matters most for a hair band? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  28. 28.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.🧱 Which property matters most for a raincoat? (a) electrical conductor (b) transparent (c) waterproof (d) heat insulator
  30. 30.Which of these needs a flexible material? (a) a water tank (b) an umbrella cover (c) a car seat belt (d) a raincoat
  31. 31.🔍 Which is the odd one out? (a) aluminium (b) graphite (c) rubber (d) brass
  32. 32.🔍 Which is the odd one out? (a) graphite (b) iron (c) aluminium (d) plastic
  33. 33.🧱 Which property matters most for an oven glove? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  34. 34.True or false: a switch contact needs a flexible material. (a) False (b) True
  35. 35.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.True or false: a yoga mat needs a flexible material. (a) True (b) False
  37. 37.True or false: a raincoat needs a waterproof material. (a) False (b) True
  38. 38.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) iron (c) wood or plastic (d) copper
  39. 39.🧱 Which property matters most for a roof sheet? (a) transparent (b) heat insulator (c) electrical conductor (d) waterproof
  40. 40.🧱 Which property matters most for a window pane? (a) transparent (b) waterproof (c) heat insulator (d) flexible

Answer key

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

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