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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 154 · 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 copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.Which of these needs a flexible material? (a) a boat hull (b) an umbrella cover (c) a yoga mat (d) a raincoat
  4. 4.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) glass (d) steel
  5. 5.🔍 Which is the odd one out? (a) plastic (b) dry wood (c) steel (d) glass
  6. 6.🧱 Which material is best for the core of an electric wire? (a) wood (b) rubber (c) glass (d) copper
  7. 7.🔍 Which is the odd one out? (a) rubber (b) graphite (c) plastic (d) cotton cloth
  8. 8.Which of these needs a transparent material? (a) a spectacle lens (b) an oven glove (c) the core of a wire (d) a car seat belt
  9. 9.True or false: a plug pin needs a transparent material. (a) False (b) True
  10. 10.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.🧱 Which property matters most for a raincoat? (a) flexible (b) heat insulator (c) electrical conductor (d) waterproof
  12. 12.Which of these needs a flexible material? (a) a boat hull (b) a water tank (c) a car seat belt (d) a raincoat
  13. 13.True or false: an oven glove needs a heat insulator. (a) True (b) False
  14. 14.🧱 Which material is best for a window pane? (a) steel (b) brick (c) glass (d) wood
  15. 15.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  16. 16.True or false: the core of a wire needs a waterproof material. (a) True (b) False
  17. 17.Which of these needs a heat insulator? (a) the core of a wire (b) an umbrella cover (c) a yoga mat (d) a tea flask lining
  18. 18.True or false: a spectacle lens needs a flexible material. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) steel (b) copper (c) brass (d) glass
  20. 20.🧱 Which property matters most for a hair band? (a) waterproof (b) flexible (c) electrical conductor (d) transparent
  21. 21.Which of these needs an electrical conductor? (a) a water tank (b) the core of a wire (c) an oven glove (d) a magnifier lens
  22. 22.Which of these needs a heat insulator? (a) a boat hull (b) the core of a wire (c) a skipping rope (d) a cooking pot handle
  23. 23.🧱 Which property matters most for a yoga mat? (a) heat insulator (b) flexible (c) transparent (d) waterproof
  24. 24.🧱 Which property matters most for a skipping rope? (a) electrical conductor (b) flexible (c) heat insulator (d) transparent
  25. 25.🔍 Which is the odd one out? (a) glass (b) plastic (c) iron (d) cotton cloth
  26. 26.🧱 Which property matters most for a tea flask lining? (a) waterproof (b) electrical conductor (c) heat insulator (d) transparent
  27. 27.Which of these needs a waterproof material? (a) a spectacle lens (b) a cooking pot handle (c) a car seat belt (d) a raincoat
  28. 28.🔍 Which is the odd one out? (a) clay pottery (b) brass (c) cotton cloth (d) glass
  29. 29.True or false: a spectacle lens needs a waterproof material. (a) True (b) False
  30. 30.True or false: a window pane needs a waterproof material. (a) True (b) False
  31. 31.Which of these needs a waterproof material? (a) the core of a wire (b) a car windscreen (c) a cooking pot handle (d) a boat hull
  32. 32.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  33. 33.Which of these needs a heat insulator? (a) a boat hull (b) a spectacle lens (c) the core of a wire (d) an oven glove
  34. 34.🧱 Which material is best for a raincoat? (a) cotton wool (b) paper (c) plastic-coated cloth (d) cardboard
  35. 35.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  36. 36.🧱 Which property matters most for a car seat belt? (a) flexible (b) electrical conductor (c) transparent (d) waterproof
  37. 37.🧱 Which property matters most for a cooking pot handle? (a) heat insulator (b) electrical conductor (c) transparent (d) flexible
  38. 38.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.🧱 Which property matters most for a switch contact? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
  40. 40.True or false: a yoga mat needs a flexible material. (a) True (b) False

Answer key

  1. a conductor
  2. a conductor
  3. a yoga mat
  4. steel
  5. steel
  6. copper
  7. graphite
  8. a spectacle lens
  9. False
  10. an insulator
  11. waterproof
  12. a car seat belt
  13. True
  14. glass
  15. an insulator
  16. False
  17. a tea flask lining
  18. False
  19. glass
  20. flexible
  21. the core of a wire
  22. a cooking pot handle
  23. flexible
  24. flexible
  25. iron
  26. heat insulator
  27. a raincoat
  28. brass
  29. False
  30. False
  31. a boat hull
  32. an insulator
  33. an oven glove
  34. plastic-coated cloth
  35. a conductor
  36. flexible
  37. heat insulator
  38. a conductor
  39. electrical conductor
  40. True

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