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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 681 · 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 of these needs a heat insulator? (a) a car seat belt (b) a skipping rope (c) a tea flask lining (d) a raincoat
  2. 2.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.True or false: a water tank needs a waterproof material. (a) False (b) True
  4. 4.🧱 Which material is best for the core of an electric wire? (a) wood (b) glass (c) copper (d) rubber
  5. 5.🔍 Which is the odd one out? (a) graphite (b) copper (c) iron (d) dry wood
  6. 6.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  7. 7.🧱 Which material is best for the bars inside concrete? (a) steel (b) plastic (c) glass (d) rubber
  8. 8.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.True or false: a skipping rope needs a heat insulator. (a) True (b) False
  10. 10.True or false: an oven glove needs a heat insulator. (a) False (b) True
  11. 11.True or false: a plug pin needs a waterproof material. (a) True (b) False
  12. 12.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.True or false: a car seat belt needs a heat insulator. (a) False (b) True
  14. 14.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) cardboard (d) plastic-coated cloth
  15. 15.🧱 Which property matters most for the core of a wire? (a) waterproof (b) heat insulator (c) electrical conductor (d) transparent
  16. 16.Which of these needs an electrical conductor? (a) a hair band (b) a boat hull (c) the core of a wire (d) a raincoat
  17. 17.Which of these needs a flexible material? (a) a switch contact (b) a window pane (c) a hair band (d) a roof sheet
  18. 18.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  19. 19.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) iron (c) copper (d) aluminium
  20. 20.🔍 Which is the odd one out? (a) plastic (b) steel (c) aluminium (d) copper
  21. 21.🧱 Which property matters most for a window pane? (a) electrical conductor (b) transparent (c) flexible (d) waterproof
  22. 22.🔍 Which is the odd one out? (a) graphite (b) cotton cloth (c) plastic (d) glass
  23. 23.🧱 Which material is best for a window pane? (a) steel (b) wood (c) brick (d) glass
  24. 24.🧱 Which property matters most for a plug pin? (a) waterproof (b) flexible (c) electrical conductor (d) transparent
  25. 25.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  26. 26.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.🧱 Which property matters most for a car windscreen? (a) waterproof (b) transparent (c) electrical conductor (d) heat insulator
  28. 28.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.Which of these needs a heat insulator? (a) a magnifier lens (b) a water tank (c) a window pane (d) an oven glove
  30. 30.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  33. 33.True or false: a boat hull needs a waterproof material. (a) True (b) False
  34. 34.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) electrical conductor (c) heat insulator (d) transparent
  35. 35.Which of these needs a waterproof material? (a) a hair band (b) an umbrella cover (c) a car windscreen (d) a window pane
  36. 36.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) flexible (c) waterproof (d) heat insulator
  37. 37.🔍 Which is the odd one out? (a) brass (b) clay pottery (c) aluminium (d) copper
  38. 38.🔍 Which is the odd one out? (a) copper (b) brass (c) glass (d) steel
  39. 39.🧱 Which property matters most for a water tank? (a) transparent (b) waterproof (c) flexible (d) heat insulator
  40. 40.🧱 Which property matters most for a switch contact? (a) flexible (b) waterproof (c) transparent (d) electrical conductor

Answer key

  1. a tea flask lining
  2. a conductor
  3. True
  4. copper
  5. dry wood
  6. an insulator
  7. steel
  8. an insulator
  9. False
  10. True
  11. False
  12. an insulator
  13. False
  14. plastic-coated cloth
  15. electrical conductor
  16. the core of a wire
  17. a hair band
  18. True
  19. wood or plastic
  20. plastic
  21. transparent
  22. graphite
  23. glass
  24. electrical conductor
  25. True
  26. an insulator
  27. transparent
  28. a conductor
  29. an oven glove
  30. a conductor
  31. an insulator
  32. a conductor
  33. True
  34. heat insulator
  35. an umbrella cover
  36. waterproof
  37. clay pottery
  38. glass
  39. waterproof
  40. electrical conductor

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