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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 364 · 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.🧱 Which property matters most for a raincoat? (a) electrical conductor (b) waterproof (c) flexible (d) transparent
  2. 2.True or false: a water tank needs a heat insulator. (a) False (b) True
  3. 3.True or false: a raincoat needs a transparent material. (a) False (b) True
  4. 4.🧱 Which material is best for the bars inside concrete? (a) glass (b) plastic (c) steel (d) rubber
  5. 5.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.🧱 Which material is best for a raincoat? (a) cotton wool (b) paper (c) cardboard (d) plastic-coated cloth
  7. 7.Which of these needs a heat insulator? (a) a cooking pot handle (b) a car seat belt (c) a switch contact (d) a roof sheet
  8. 8.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.🔍 Which is the odd one out? (a) iron (b) dry wood (c) copper (d) graphite
  10. 10.🧱 Which property matters most for a boat hull? (a) transparent (b) electrical conductor (c) flexible (d) waterproof
  11. 11.True or false: a yoga mat needs a flexible material. (a) True (b) False
  12. 12.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) iron (c) aluminium (d) copper
  13. 13.True or false: a hair band needs a flexible material. (a) False (b) True
  14. 14.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  15. 15.Which of these needs an electrical conductor? (a) the core of a wire (b) a cooking pot handle (c) an oven glove (d) a tea flask lining
  16. 16.True or false: a spectacle lens needs an electrical conductor. (a) False (b) True
  17. 17.🧱 Which property matters most for a tea flask lining? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  18. 18.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  19. 19.🔍 Which is the odd one out? (a) steel (b) copper (c) cotton cloth (d) iron
  20. 20.True or false: a water tank needs a waterproof material. (a) False (b) True
  21. 21.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.Which of these needs a transparent material? (a) a cooking pot handle (b) a magnifier lens (c) a boat hull (d) a tea flask lining
  24. 24.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.Which of these needs a transparent material? (a) a roof sheet (b) an umbrella cover (c) a tea flask lining (d) a spectacle lens
  26. 26.🧱 Which property matters most for a roof sheet? (a) electrical conductor (b) waterproof (c) transparent (d) heat insulator
  27. 27.🧱 Which property matters most for a magnifier lens? (a) flexible (b) heat insulator (c) transparent (d) waterproof
  28. 28.🧱 Which property matters most for the core of a wire? (a) flexible (b) waterproof (c) transparent (d) electrical conductor
  29. 29.🔍 Which is the odd one out? (a) glass (b) aluminium (c) copper (d) iron
  30. 30.🧱 Which property matters most for a spectacle lens? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
  31. 31.True or false: a water tank needs an electrical conductor. (a) False (b) True
  32. 32.Which of these needs a heat insulator? (a) the core of a wire (b) a tea flask lining (c) a roof sheet (d) a hair band
  33. 33.Which of these needs a flexible material? (a) a car seat belt (b) an umbrella cover (c) a water tank (d) a boat hull
  34. 34.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.True or false: a car seat belt needs a heat insulator. (a) True (b) False
  36. 36.Which of these needs a heat insulator? (a) a spectacle lens (b) a water tank (c) an oven glove (d) an umbrella cover
  37. 37.🔍 Which is the odd one out? (a) steel (b) iron (c) plastic (d) aluminium
  38. 38.Which of these needs a waterproof material? (a) a window pane (b) the core of a wire (c) a water tank (d) a tea flask lining
  39. 39.True or false: a car windscreen needs a transparent material. (a) True (b) False
  40. 40.True or false: a plug pin needs a transparent material. (a) True (b) False

Answer key

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

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