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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 470 · 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 material is best for a raincoat? (a) paper (b) plastic-coated cloth (c) cotton wool (d) cardboard
  2. 2.Which of these needs a heat insulator? (a) a plug pin (b) a car seat belt (c) a boat hull (d) a cooking pot handle
  3. 3.True or false: a boat hull needs a transparent material. (a) False (b) True
  4. 4.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.Which of these needs a waterproof material? (a) a switch contact (b) a magnifier lens (c) a cooking pot handle (d) a water tank
  7. 7.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.🧱 Which material is best for the bars inside concrete? (a) rubber (b) glass (c) plastic (d) steel
  9. 9.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.Which of these needs a flexible material? (a) a magnifier lens (b) a raincoat (c) a plug pin (d) a hair band
  11. 11.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible
  12. 12.🔍 Which is the odd one out? (a) cotton cloth (b) iron (c) plastic (d) clay pottery
  13. 13.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) transparent (c) flexible (d) waterproof
  14. 14.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) copper (c) iron (d) wood or plastic
  15. 15.Which of these needs a transparent material? (a) a plug pin (b) the core of a wire (c) a magnifier lens (d) a skipping rope
  16. 16.True or false: a water tank needs a transparent material. (a) True (b) False
  17. 17.🧱 Which material is best for the core of an electric wire? (a) wood (b) rubber (c) copper (d) glass
  18. 18.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  19. 19.True or false: an umbrella cover needs a waterproof material. (a) True (b) False
  20. 20.🔍 Which is the odd one out? (a) graphite (b) plastic (c) glass (d) rubber
  21. 21.🔍 Which is the odd one out? (a) rubber (b) copper (c) glass (d) cotton cloth
  22. 22.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) heat insulator (c) flexible (d) transparent
  23. 23.🔍 Which is the odd one out? (a) steel (b) aluminium (c) plastic (d) graphite
  24. 24.🔍 Which is the odd one out? (a) brass (b) clay pottery (c) graphite (d) copper
  25. 25.True or false: a car windscreen needs a waterproof material. (a) True (b) False
  26. 26.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  27. 27.Which of these needs a flexible material? (a) a skipping rope (b) a window pane (c) a raincoat (d) a boat hull
  28. 28.🔍 Which is the odd one out? (a) cotton cloth (b) brass (c) plastic (d) dry wood
  29. 29.🧱 Which property matters most for an umbrella cover? (a) heat insulator (b) transparent (c) waterproof (d) electrical conductor
  30. 30.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.True or false: a plug pin needs a transparent material. (a) True (b) False
  32. 32.True or false: a spectacle lens needs a waterproof material. (a) True (b) False
  33. 33.🧱 Which material is best for a window pane? (a) wood (b) glass (c) brick (d) steel
  34. 34.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.Which of these needs a waterproof material? (a) a raincoat (b) a spectacle lens (c) the core of a wire (d) a car windscreen
  36. 36.True or false: a switch contact needs a waterproof material. (a) False (b) True
  37. 37.🧱 Which property matters most for a magnifier lens? (a) heat insulator (b) transparent (c) flexible (d) waterproof
  38. 38.🧱 Which property matters most for the core of a wire? (a) transparent (b) heat insulator (c) waterproof (d) electrical conductor
  39. 39.True or false: an oven glove needs an electrical conductor. (a) True (b) False
  40. 40.🧱 Which property matters most for a hair band? (a) waterproof (b) heat insulator (c) transparent (d) flexible

Answer key

  1. plastic-coated cloth
  2. a cooking pot handle
  3. False
  4. a conductor
  5. an insulator
  6. a water tank
  7. an insulator
  8. steel
  9. a conductor
  10. a hair band
  11. waterproof
  12. iron
  13. electrical conductor
  14. wood or plastic
  15. a magnifier lens
  16. False
  17. copper
  18. a conductor
  19. True
  20. graphite
  21. copper
  22. flexible
  23. plastic
  24. clay pottery
  25. False
  26. True
  27. a skipping rope
  28. brass
  29. waterproof
  30. a conductor
  31. False
  32. False
  33. glass
  34. an insulator
  35. a raincoat
  36. False
  37. transparent
  38. electrical conductor
  39. False
  40. flexible

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