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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 642 · 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 cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.True or false: a spectacle lens needs a flexible material. (a) False (b) True
  3. 3.Which of these needs an electrical conductor? (a) a skipping rope (b) a boat hull (c) the core of a wire (d) a water tank
  4. 4.🔍 Which is the odd one out? (a) brass (b) steel (c) rubber (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 an umbrella cover? (a) flexible (b) waterproof (c) heat insulator (d) electrical conductor
  7. 7.🧱 Which property matters most for a raincoat? (a) electrical conductor (b) transparent (c) heat insulator (d) waterproof
  8. 8.Which of these needs a waterproof material? (a) a cooking pot handle (b) a magnifier lens (c) a raincoat (d) the core of a wire
  9. 9.🧱 Which property matters most for a tea flask lining? (a) flexible (b) transparent (c) heat insulator (d) electrical conductor
  10. 10.🔍 Which is the odd one out? (a) steel (b) brass (c) plastic (d) aluminium
  11. 11.True or false: an umbrella cover needs a waterproof material. (a) True (b) False
  12. 12.Which of these needs an electrical conductor? (a) a plug pin (b) a window pane (c) a spectacle lens (d) a magnifier lens
  13. 13.Which of these needs a flexible material? (a) a cooking pot handle (b) a skipping rope (c) a raincoat (d) a roof sheet
  14. 14.Which of these needs a flexible material? (a) a roof sheet (b) a yoga mat (c) a boat hull (d) a raincoat
  15. 15.True or false: a roof sheet needs a transparent material. (a) True (b) False
  16. 16.🧱 Which property matters most for a skipping rope? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
  17. 17.True or false: a boat hull needs a waterproof material. (a) True (b) False
  18. 18.🧱 Which material is best for the core of an electric wire? (a) copper (b) glass (c) wood (d) rubber
  19. 19.True or false: a magnifier lens needs a transparent material. (a) True (b) False
  20. 20.🧱 Which material is best for a raincoat? (a) cotton wool (b) plastic-coated cloth (c) cardboard (d) paper
  21. 21.🧱 Which property matters most for a cooking pot handle? (a) electrical conductor (b) waterproof (c) flexible (d) heat insulator
  22. 22.Which of these needs a waterproof material? (a) a car seat belt (b) a boat hull (c) a switch contact (d) a hair band
  23. 23.True or false: a skipping rope needs a flexible material. (a) False (b) True
  24. 24.🧱 Which material is best for a window pane? (a) wood (b) steel (c) brick (d) glass
  25. 25.True or false: an umbrella cover needs an electrical conductor. (a) False (b) True
  26. 26.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.Which of these needs an electrical conductor? (a) a cooking pot handle (b) a switch contact (c) a magnifier lens (d) a window pane
  28. 28.🧱 Which material is best for a cooking pot handle? (a) copper (b) wood or plastic (c) iron (d) aluminium
  29. 29.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.True or false: a car windscreen needs a transparent material. (a) True (b) False
  31. 31.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  33. 33.🔍 Which is the odd one out? (a) cotton cloth (b) plastic (c) copper (d) dry wood
  34. 34.🧱 Which property matters most for a window pane? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  35. 35.🧱 Which property matters most for a car seat belt? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  36. 36.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  37. 37.🧱 Which property matters most for a roof sheet? (a) transparent (b) electrical conductor (c) flexible (d) waterproof
  38. 38.🧱 Which property matters most for a water tank? (a) waterproof (b) flexible (c) transparent (d) electrical conductor
  39. 39.🧱 Which property matters most for the core of a wire? (a) flexible (b) transparent (c) electrical conductor (d) waterproof
  40. 40.True or false: an oven glove needs a flexible material. (a) False (b) True

Answer key

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

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