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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 156 · 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.🧱 Which property matters most for a skipping rope? (a) electrical conductor (b) flexible (c) heat insulator (d) transparent
  3. 3.Which of these needs a heat insulator? (a) a cooking pot handle (b) a plug pin (c) a hair band (d) a water tank
  4. 4.Which of these needs a transparent material? (a) a switch contact (b) a water tank (c) a roof sheet (d) a magnifier lens
  5. 5.True or false: a raincoat needs a waterproof material. (a) True (b) False
  6. 6.🧱 Which property matters most for a hair band? (a) waterproof (b) heat insulator (c) transparent (d) flexible
  7. 7.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) transparent (c) waterproof (d) heat insulator
  8. 8.🧱 Which property matters most for a plug pin? (a) heat insulator (b) transparent (c) waterproof (d) electrical conductor
  9. 9.🧱 Which material is best for a cooking pot handle? (a) copper (b) wood or plastic (c) iron (d) aluminium
  10. 10.True or false: a water tank needs a heat insulator. (a) False (b) True
  11. 11.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.True or false: an oven glove needs a heat insulator. (a) True (b) False
  13. 13.True or false: a skipping rope needs a waterproof material. (a) True (b) False
  14. 14.🔍 Which is the odd one out? (a) clay pottery (b) graphite (c) cotton cloth (d) glass
  15. 15.Which of these needs a flexible material? (a) the core of a wire (b) a car seat belt (c) an oven glove (d) a boat hull
  16. 16.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🔍 Which is the odd one out? (a) brass (b) copper (c) graphite (d) rubber
  18. 18.🧱 Which property matters most for a tea flask lining? (a) flexible (b) electrical conductor (c) transparent (d) heat insulator
  19. 19.🔍 Which is the odd one out? (a) plastic (b) brass (c) copper (d) iron
  20. 20.Which of these needs a flexible material? (a) a spectacle lens (b) a yoga mat (c) a tea flask lining (d) a magnifier lens
  21. 21.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.True or false: a plug pin needs a heat insulator. (a) True (b) False
  23. 23.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  24. 24.Which of these needs an electrical conductor? (a) a cooking pot handle (b) a plug pin (c) a boat hull (d) a skipping rope
  25. 25.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  26. 26.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) paper (c) cotton wool (d) cardboard
  27. 27.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) rubber (d) glass
  28. 28.🧱 Which property matters most for an umbrella cover? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  29. 29.🧱 Which material is best for the bars inside concrete? (a) rubber (b) glass (c) steel (d) plastic
  30. 30.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🔍 Which is the odd one out? (a) steel (b) aluminium (c) iron (d) cotton cloth
  32. 32.🔍 Which is the odd one out? (a) graphite (b) clay pottery (c) steel (d) copper
  33. 33.True or false: an oven glove needs a flexible material. (a) True (b) False
  34. 34.🧱 Which property matters most for a roof sheet? (a) transparent (b) heat insulator (c) waterproof (d) flexible
  35. 35.True or false: an umbrella cover needs an electrical conductor. (a) True (b) False
  36. 36.🧱 Which property matters most for the core of a wire? (a) waterproof (b) flexible (c) electrical conductor (d) heat insulator
  37. 37.🧱 Which material is best for a window pane? (a) steel (b) wood (c) brick (d) glass
  38. 38.True or false: the core of a wire needs a heat insulator. (a) False (b) True
  39. 39.True or false: a car seat belt needs a flexible material. (a) False (b) True
  40. 40.True or false: a cooking pot handle needs an electrical conductor. (a) True (b) False

Answer key

  1. a conductor
  2. flexible
  3. a cooking pot handle
  4. a magnifier lens
  5. True
  6. flexible
  7. electrical conductor
  8. electrical conductor
  9. wood or plastic
  10. False
  11. an insulator
  12. True
  13. False
  14. graphite
  15. a car seat belt
  16. an insulator
  17. rubber
  18. heat insulator
  19. plastic
  20. a yoga mat
  21. an insulator
  22. False
  23. a conductor
  24. a plug pin
  25. a conductor
  26. plastic-coated cloth
  27. copper
  28. waterproof
  29. steel
  30. an insulator
  31. cotton cloth
  32. clay pottery
  33. False
  34. waterproof
  35. False
  36. electrical conductor
  37. glass
  38. False
  39. True
  40. False

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