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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 649 · 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.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.Which of these needs a flexible material? (a) a raincoat (b) a spectacle lens (c) a roof sheet (d) a hair band
  4. 4.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) iron (c) copper (d) aluminium
  5. 5.🧱 Which material is best for the core of an electric wire? (a) copper (b) glass (c) wood (d) rubber
  6. 6.True or false: a roof sheet needs an electrical conductor. (a) True (b) False
  7. 7.🧱 Which property matters most for a hair band? (a) heat insulator (b) transparent (c) waterproof (d) flexible
  8. 8.🧱 Which property matters most for a skipping rope? (a) flexible (b) heat insulator (c) electrical conductor (d) transparent
  9. 9.🔍 Which is the odd one out? (a) rubber (b) steel (c) cotton cloth (d) plastic
  10. 10.🔍 Which is the odd one out? (a) plastic (b) graphite (c) glass (d) dry wood
  11. 11.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  12. 12.🔍 Which is the odd one out? (a) iron (b) cotton cloth (c) graphite (d) steel
  13. 13.True or false: a raincoat needs a waterproof material. (a) True (b) False
  14. 14.Which of these needs a waterproof material? (a) a skipping rope (b) a raincoat (c) an oven glove (d) a magnifier lens
  15. 15.🧱 Which material is best for the bars inside concrete? (a) steel (b) glass (c) plastic (d) rubber
  16. 16.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🔍 Which is the odd one out? (a) cotton cloth (b) plastic (c) dry wood (d) iron
  18. 18.🧱 Which property matters most for a window pane? (a) transparent (b) waterproof (c) heat insulator (d) electrical conductor
  19. 19.🧱 Which property matters most for a plug pin? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  20. 20.True or false: a car windscreen needs a heat insulator. (a) True (b) False
  21. 21.Which of these needs a heat insulator? (a) a tea flask lining (b) a spectacle lens (c) a roof sheet (d) a magnifier lens
  22. 22.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  23. 23.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cardboard (c) paper (d) cotton wool
  24. 24.Which of these needs a waterproof material? (a) a hair band (b) a water tank (c) a plug pin (d) a cooking pot handle
  25. 25.🔍 Which is the odd one out? (a) graphite (b) dry wood (c) iron (d) aluminium
  26. 26.🔍 Which is the odd one out? (a) aluminium (b) glass (c) brass (d) copper
  27. 27.🧱 Which property matters most for an oven glove? (a) flexible (b) heat insulator (c) transparent (d) waterproof
  28. 28.Which of these needs a waterproof material? (a) a plug pin (b) a switch contact (c) a boat hull (d) a skipping rope
  29. 29.🔍 Which is the odd one out? (a) steel (b) copper (c) plastic (d) brass
  30. 30.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🔍 Which is the odd one out? (a) aluminium (b) graphite (c) brass (d) clay pottery
  32. 32.Which of these needs a flexible material? (a) the core of a wire (b) a skipping rope (c) a tea flask lining (d) a plug pin
  33. 33.🧱 Which property matters most for a yoga mat? (a) waterproof (b) transparent (c) flexible (d) heat insulator
  34. 34.🔍 Which is the odd one out? (a) rubber (b) dry wood (c) aluminium (d) glass
  35. 35.Which of these needs a flexible material? (a) a tea flask lining (b) a yoga mat (c) a boat hull (d) a cooking pot handle
  36. 36.Which of these needs a waterproof material? (a) a yoga mat (b) a roof sheet (c) the core of a wire (d) a spectacle lens
  37. 37.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.True or false: an oven glove needs a heat insulator. (a) False (b) True
  40. 40.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor

Answer key

  1. an insulator
  2. an insulator
  3. a hair band
  4. wood or plastic
  5. copper
  6. False
  7. flexible
  8. flexible
  9. steel
  10. graphite
  11. an insulator
  12. cotton cloth
  13. True
  14. a raincoat
  15. steel
  16. a conductor
  17. iron
  18. transparent
  19. electrical conductor
  20. False
  21. a tea flask lining
  22. a conductor
  23. plastic-coated cloth
  24. a water tank
  25. dry wood
  26. glass
  27. heat insulator
  28. a boat hull
  29. plastic
  30. an insulator
  31. clay pottery
  32. a skipping rope
  33. flexible
  34. aluminium
  35. a yoga mat
  36. a roof sheet
  37. an insulator
  38. a conductor
  39. True
  40. a conductor

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