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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 313 · 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.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🧱 Which property matters most for a roof sheet? (a) electrical conductor (b) heat insulator (c) flexible (d) waterproof
  4. 4.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) copper (c) iron (d) aluminium
  5. 5.🧱 Which material is best for a raincoat? (a) cotton wool (b) paper (c) cardboard (d) plastic-coated cloth
  6. 6.True or false: a skipping rope needs a heat insulator. (a) False (b) True
  7. 7.🧱 Which material is best for a window pane? (a) wood (b) glass (c) steel (d) brick
  8. 8.🧱 Which material is best for the core of an electric wire? (a) glass (b) wood (c) rubber (d) copper
  9. 9.🔍 Which is the odd one out? (a) plastic (b) glass (c) steel (d) dry wood
  10. 10.True or false: a raincoat needs a transparent material. (a) False (b) True
  11. 11.Which of these needs a transparent material? (a) a skipping rope (b) a tea flask lining (c) a spectacle lens (d) an umbrella cover
  12. 12.🧱 Which property matters most for a tea flask lining? (a) flexible (b) electrical conductor (c) heat insulator (d) transparent
  13. 13.True or false: a boat hull needs a waterproof material. (a) True (b) False
  14. 14.🔍 Which is the odd one out? (a) clay pottery (b) iron (c) glass (d) cotton cloth
  15. 15.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  16. 16.🧱 Which material is best for the bars inside concrete? (a) steel (b) rubber (c) plastic (d) glass
  17. 17.🧱 Which property matters most for a raincoat? (a) heat insulator (b) flexible (c) transparent (d) waterproof
  18. 18.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.Which of these needs an electrical conductor? (a) a window pane (b) a car seat belt (c) a plug pin (d) a magnifier lens
  20. 20.🔍 Which is the odd one out? (a) cotton cloth (b) dry wood (c) graphite (d) plastic
  21. 21.Which of these needs an electrical conductor? (a) a raincoat (b) a switch contact (c) a boat hull (d) a water tank
  22. 22.True or false: a water tank needs a waterproof material. (a) True (b) False
  23. 23.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  24. 24.Which of these needs a heat insulator? (a) the core of a wire (b) a raincoat (c) a cooking pot handle (d) a boat hull
  25. 25.Which of these needs a heat insulator? (a) a switch contact (b) a car seat belt (c) a spectacle lens (d) an oven glove
  26. 26.True or false: a tea flask lining needs a heat insulator. (a) False (b) True
  27. 27.True or false: an oven glove needs a heat insulator. (a) True (b) False
  28. 28.True or false: the core of a wire needs a transparent material. (a) True (b) False
  29. 29.🧱 Which property matters most for a hair band? (a) heat insulator (b) flexible (c) transparent (d) electrical conductor
  30. 30.🧱 Which property matters most for the core of a wire? (a) waterproof (b) transparent (c) electrical conductor (d) flexible
  31. 31.🧱 Which property matters most for a water tank? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  32. 32.True or false: a plug pin needs a transparent material. (a) True (b) False
  33. 33.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.🧱 Which property matters most for an oven glove? (a) waterproof (b) flexible (c) transparent (d) heat insulator
  36. 36.🧱 Which property matters most for a boat hull? (a) transparent (b) waterproof (c) electrical conductor (d) heat insulator
  37. 37.Which of these needs an electrical conductor? (a) a window pane (b) a roof sheet (c) a boat hull (d) the core of a wire
  38. 38.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  39. 39.True or false: a skipping rope needs an electrical conductor. (a) False (b) True
  40. 40.Which of these needs a flexible material? (a) a skipping rope (b) a water tank (c) a switch contact (d) a tea flask lining

Answer key

  1. an insulator
  2. an insulator
  3. waterproof
  4. wood or plastic
  5. plastic-coated cloth
  6. False
  7. glass
  8. copper
  9. steel
  10. False
  11. a spectacle lens
  12. heat insulator
  13. True
  14. iron
  15. a conductor
  16. steel
  17. waterproof
  18. a conductor
  19. a plug pin
  20. graphite
  21. a switch contact
  22. True
  23. a conductor
  24. a cooking pot handle
  25. an oven glove
  26. True
  27. True
  28. False
  29. flexible
  30. electrical conductor
  31. waterproof
  32. False
  33. an insulator
  34. a conductor
  35. heat insulator
  36. waterproof
  37. the core of a wire
  38. an insulator
  39. False
  40. a skipping rope

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