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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 866 · 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 window pane? (a) wood (b) brick (c) glass (d) steel
  2. 2.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) glass (d) rubber
  3. 3.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.True or false: the core of a wire needs a flexible material. (a) True (b) False
  5. 5.Which of these needs a flexible material? (a) a water tank (b) a yoga mat (c) a roof sheet (d) a boat hull
  6. 6.🧱 Which property matters most for an oven glove? (a) heat insulator (b) transparent (c) flexible (d) waterproof
  7. 7.Which of these needs an electrical conductor? (a) a roof sheet (b) a magnifier lens (c) a skipping rope (d) a switch contact
  8. 8.True or false: a tea flask lining needs a heat insulator. (a) True (b) False
  9. 9.🧱 Which property matters most for a tea flask lining? (a) flexible (b) heat insulator (c) electrical conductor (d) transparent
  10. 10.🔍 Which is the odd one out? (a) aluminium (b) plastic (c) graphite (d) steel
  11. 11.🔍 Which is the odd one out? (a) brass (b) copper (c) aluminium (d) cotton cloth
  12. 12.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.🧱 Which property matters most for a cooking pot handle? (a) transparent (b) heat insulator (c) flexible (d) electrical conductor
  14. 14.🔍 Which is the odd one out? (a) copper (b) graphite (c) glass (d) iron
  15. 15.True or false: a boat hull needs a waterproof material. (a) True (b) False
  16. 16.True or false: the core of a wire needs a waterproof material. (a) False (b) True
  17. 17.🔍 Which is the odd one out? (a) rubber (b) plastic (c) graphite (d) dry wood
  18. 18.Which of these needs a waterproof material? (a) a car windscreen (b) a raincoat (c) a window pane (d) a cooking pot handle
  19. 19.True or false: a spectacle lens needs a flexible material. (a) False (b) True
  20. 20.🔍 Which is the odd one out? (a) rubber (b) cotton cloth (c) aluminium (d) plastic
  21. 21.🧱 Which property matters most for a window pane? (a) heat insulator (b) flexible (c) transparent (d) waterproof
  22. 22.🧱 Which property matters most for a skipping rope? (a) flexible (b) waterproof (c) heat insulator (d) electrical conductor
  23. 23.🧱 Which property matters most for a hair band? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  24. 24.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.🧱 Which material is best for a raincoat? (a) cardboard (b) paper (c) plastic-coated cloth (d) cotton wool
  26. 26.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) copper (c) iron (d) wood or plastic
  28. 28.🔍 Which is the odd one out? (a) clay pottery (b) brass (c) rubber (d) cotton cloth
  29. 29.True or false: a magnifier lens needs a transparent material. (a) False (b) True
  30. 30.True or false: a switch contact needs a heat insulator. (a) False (b) True
  31. 31.Which of these needs an electrical conductor? (a) a car windscreen (b) an umbrella cover (c) a water tank (d) the core of a wire
  32. 32.🔍 Which is the odd one out? (a) steel (b) brass (c) graphite (d) dry wood
  33. 33.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.🧱 Which property matters most for a water tank? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
  35. 35.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  36. 36.🔍 Which is the odd one out? (a) plastic (b) clay pottery (c) dry wood (d) steel
  37. 37.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.Which of these needs a transparent material? (a) an umbrella cover (b) a tea flask lining (c) a cooking pot handle (d) a car windscreen
  39. 39.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  40. 40.🧱 Which material is best for the bars inside concrete? (a) glass (b) steel (c) plastic (d) rubber

Answer key

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

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