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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 621 · 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.True or false: a raincoat needs a transparent material. (a) True (b) False
  2. 2.True or false: a magnifier lens needs a heat insulator. (a) True (b) False
  3. 3.🔍 Which is the odd one out? (a) glass (b) clay pottery (c) rubber (d) steel
  4. 4.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) aluminium (c) copper (d) iron
  5. 5.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.🧱 Which property matters most for a switch contact? (a) heat insulator (b) waterproof (c) transparent (d) electrical conductor
  7. 7.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.🔍 Which is the odd one out? (a) rubber (b) aluminium (c) clay pottery (d) dry wood
  9. 9.Which of these needs an electrical conductor? (a) a raincoat (b) the core of a wire (c) a boat hull (d) a cooking pot handle
  10. 10.🧱 Which material is best for a raincoat? (a) cotton wool (b) plastic-coated cloth (c) cardboard (d) paper
  11. 11.🔍 Which is the odd one out? (a) plastic (b) cotton cloth (c) brass (d) dry wood
  12. 12.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) flexible (c) waterproof (d) transparent
  13. 13.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.Which of these needs an electrical conductor? (a) a magnifier lens (b) a water tank (c) a switch contact (d) an umbrella cover
  15. 15.Which of these needs a waterproof material? (a) a cooking pot handle (b) a raincoat (c) a window pane (d) a skipping rope
  16. 16.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.Which of these needs a heat insulator? (a) a raincoat (b) a cooking pot handle (c) a spectacle lens (d) a switch contact
  18. 18.True or false: a car windscreen needs a flexible material. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) aluminium (b) steel (c) brass (d) clay pottery
  20. 20.Which of these needs a transparent material? (a) a plug pin (b) a skipping rope (c) a roof sheet (d) a window pane
  21. 21.🧱 Which material is best for the core of an electric wire? (a) copper (b) glass (c) rubber (d) wood
  22. 22.🧱 Which material is best for a window pane? (a) steel (b) wood (c) glass (d) brick
  23. 23.🔍 Which is the odd one out? (a) rubber (b) plastic (c) glass (d) graphite
  24. 24.🧱 Which property matters most for a car windscreen? (a) heat insulator (b) transparent (c) electrical conductor (d) flexible
  25. 25.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🧱 Which property matters most for a skipping rope? (a) transparent (b) heat insulator (c) waterproof (d) flexible
  28. 28.True or false: a car seat belt needs a transparent material. (a) False (b) True
  29. 29.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  31. 31.True or false: a boat hull needs a transparent material. (a) True (b) False
  32. 32.True or false: a skipping rope needs a flexible material. (a) True (b) False
  33. 33.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  34. 34.True or false: a raincoat needs a heat insulator. (a) True (b) False
  35. 35.True or false: a magnifier lens needs an electrical conductor. (a) False (b) True
  36. 36.🧱 Which property matters most for an umbrella cover? (a) electrical conductor (b) waterproof (c) transparent (d) flexible
  37. 37.🧱 Which property matters most for a car seat belt? (a) waterproof (b) heat insulator (c) electrical conductor (d) flexible
  38. 38.🧱 Which property matters most for a hair band? (a) transparent (b) flexible (c) heat insulator (d) electrical conductor
  39. 39.True or false: a yoga mat needs a flexible material. (a) True (b) False
  40. 40.🔍 Which is the odd one out? (a) graphite (b) iron (c) cotton cloth (d) steel

Answer key

  1. False
  2. False
  3. steel
  4. wood or plastic
  5. a conductor
  6. electrical conductor
  7. an insulator
  8. aluminium
  9. the core of a wire
  10. plastic-coated cloth
  11. brass
  12. waterproof
  13. an insulator
  14. a switch contact
  15. a raincoat
  16. an insulator
  17. a cooking pot handle
  18. False
  19. clay pottery
  20. a window pane
  21. copper
  22. glass
  23. graphite
  24. transparent
  25. a conductor
  26. a conductor
  27. flexible
  28. False
  29. a conductor
  30. True
  31. False
  32. True
  33. True
  34. False
  35. False
  36. waterproof
  37. flexible
  38. flexible
  39. True
  40. cotton cloth

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