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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 941 · 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 dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) plastic (d) steel
  3. 3.Which of these needs an electrical conductor? (a) a hair band (b) a cooking pot handle (c) a raincoat (d) a plug pin
  4. 4.Which of these needs an electrical conductor? (a) a hair band (b) a tea flask lining (c) a spectacle lens (d) the core of a wire
  5. 5.🧱 Which material is best for a window pane? (a) wood (b) brick (c) steel (d) glass
  6. 6.True or false: a raincoat needs an electrical conductor. (a) True (b) False
  7. 7.🧱 Which property matters most for the core of a wire? (a) heat insulator (b) flexible (c) electrical conductor (d) waterproof
  8. 8.🔍 Which is the odd one out? (a) clay pottery (b) graphite (c) steel (d) aluminium
  9. 9.🔍 Which is the odd one out? (a) clay pottery (b) cotton cloth (c) copper (d) glass
  10. 10.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.Which of these needs a flexible material? (a) a water tank (b) a skipping rope (c) a roof sheet (d) the core of a wire
  12. 12.Which of these needs a heat insulator? (a) an umbrella cover (b) a plug pin (c) a cooking pot handle (d) a raincoat
  13. 13.🔍 Which is the odd one out? (a) brass (b) iron (c) rubber (d) copper
  14. 14.Which of these needs a heat insulator? (a) an umbrella cover (b) an oven glove (c) a car seat belt (d) a plug pin
  15. 15.Which of these needs a waterproof material? (a) a plug pin (b) an oven glove (c) the core of a wire (d) a raincoat
  16. 16.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.Which of these needs a waterproof material? (a) a yoga mat (b) an umbrella cover (c) a spectacle lens (d) a plug pin
  18. 18.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  19. 19.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.True or false: a water tank needs a waterproof material. (a) True (b) False
  21. 21.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) flexible (c) heat insulator (d) transparent
  22. 22.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.🧱 Which property matters most for a roof sheet? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  24. 24.🔍 Which is the odd one out? (a) dry wood (b) aluminium (c) rubber (d) glass
  25. 25.🧱 Which property matters most for a switch contact? (a) heat insulator (b) transparent (c) flexible (d) electrical conductor
  26. 26.Which of these needs a flexible material? (a) a plug pin (b) a switch contact (c) a car seat belt (d) a boat hull
  27. 27.🔍 Which is the odd one out? (a) brass (b) iron (c) copper (d) dry wood
  28. 28.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) rubber (d) glass
  30. 30.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  31. 31.🧱 Which property matters most for a water tank? (a) transparent (b) waterproof (c) heat insulator (d) electrical conductor
  32. 32.True or false: a window pane needs a waterproof material. (a) True (b) False
  33. 33.True or false: a car windscreen needs a transparent material. (a) True (b) False
  34. 34.🧱 Which property matters most for a magnifier lens? (a) waterproof (b) transparent (c) heat insulator (d) electrical conductor
  35. 35.Which of these needs a waterproof material? (a) a car seat belt (b) a boat hull (c) a cooking pot handle (d) a skipping rope
  36. 36.Which of these needs a transparent material? (a) a yoga mat (b) the core of a wire (c) a boat hull (d) a spectacle lens
  37. 37.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.True or false: a tea flask lining needs a waterproof material. (a) False (b) True
  39. 39.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  40. 40.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) cardboard (d) paper

Answer key

  1. an insulator
  2. steel
  3. a plug pin
  4. the core of a wire
  5. glass
  6. False
  7. electrical conductor
  8. clay pottery
  9. copper
  10. an insulator
  11. a skipping rope
  12. a cooking pot handle
  13. rubber
  14. an oven glove
  15. a raincoat
  16. a conductor
  17. an umbrella cover
  18. a conductor
  19. a conductor
  20. True
  21. heat insulator
  22. an insulator
  23. waterproof
  24. aluminium
  25. electrical conductor
  26. a car seat belt
  27. dry wood
  28. a conductor
  29. copper
  30. True
  31. waterproof
  32. False
  33. True
  34. transparent
  35. a boat hull
  36. a spectacle lens
  37. an insulator
  38. False
  39. an insulator
  40. plastic-coated cloth

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