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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 781 · 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 aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.Which of these needs a transparent material? (a) a switch contact (b) a skipping rope (c) a spectacle lens (d) a plug pin
  3. 3.True or false: a water tank needs a waterproof material. (a) False (b) True
  4. 4.True or false: a boat hull needs a transparent material. (a) True (b) False
  5. 5.True or false: a car windscreen needs a flexible material. (a) False (b) True
  6. 6.🧱 Which property matters most for an umbrella cover? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  7. 7.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.🔍 Which is the odd one out? (a) cotton cloth (b) aluminium (c) brass (d) iron
  9. 9.True or false: a switch contact needs a transparent material. (a) False (b) True
  10. 10.Which of these needs a flexible material? (a) a water tank (b) a skipping rope (c) a window pane (d) an umbrella cover
  11. 11.Which of these needs an electrical conductor? (a) a switch contact (b) a boat hull (c) a skipping rope (d) a magnifier lens
  12. 12.🔍 Which is the odd one out? (a) cotton cloth (b) dry wood (c) iron (d) glass
  13. 13.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.🧱 Which property matters most for a boat hull? (a) waterproof (b) flexible (c) electrical conductor (d) transparent
  15. 15.True or false: a roof sheet needs a heat insulator. (a) True (b) False
  16. 16.🔍 Which is the odd one out? (a) graphite (b) steel (c) aluminium (d) rubber
  17. 17.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) iron (c) copper (d) wood or plastic
  18. 18.Which of these needs a waterproof material? (a) a water tank (b) the core of a wire (c) a car windscreen (d) a plug pin
  19. 19.🔍 Which is the odd one out? (a) clay pottery (b) cotton cloth (c) graphite (d) dry wood
  20. 20.Which of these needs an electrical conductor? (a) a spectacle lens (b) the core of a wire (c) a water tank (d) an oven glove
  21. 21.True or false: a boat hull needs a flexible material. (a) True (b) False
  22. 22.🧱 Which material is best for a window pane? (a) glass (b) steel (c) brick (d) wood
  23. 23.Which of these needs an electrical conductor? (a) a plug pin (b) a magnifier lens (c) a roof sheet (d) an umbrella cover
  24. 24.🔍 Which is the odd one out? (a) clay pottery (b) plastic (c) aluminium (d) cotton cloth
  25. 25.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  26. 26.🧱 Which material is best for the core of an electric wire? (a) copper (b) rubber (c) wood (d) glass
  27. 27.Which of these needs a transparent material? (a) a car windscreen (b) a boat hull (c) an oven glove (d) a hair band
  28. 28.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.🧱 Which property matters most for a car seat belt? (a) heat insulator (b) electrical conductor (c) flexible (d) transparent
  31. 31.🧱 Which material is best for the bars inside concrete? (a) rubber (b) steel (c) plastic (d) glass
  32. 32.Which of these needs a heat insulator? (a) a raincoat (b) a plug pin (c) a tea flask lining (d) a switch contact
  33. 33.🧱 Which property matters most for a plug pin? (a) heat insulator (b) waterproof (c) electrical conductor (d) flexible
  34. 34.🧱 Which material is best for a raincoat? (a) paper (b) plastic-coated cloth (c) cardboard (d) cotton wool
  35. 35.Which of these needs a heat insulator? (a) a yoga mat (b) a cooking pot handle (c) a skipping rope (d) a car windscreen
  36. 36.🧱 Which property matters most for a switch contact? (a) transparent (b) flexible (c) waterproof (d) electrical conductor
  37. 37.🔍 Which is the odd one out? (a) aluminium (b) plastic (c) steel (d) graphite
  38. 38.Which of these needs a flexible material? (a) a car windscreen (b) a hair band (c) an oven glove (d) a cooking pot handle
  39. 39.🧱 Which property matters most for a raincoat? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  40. 40.🧱 Which property matters most for a water tank? (a) flexible (b) electrical conductor (c) waterproof (d) heat insulator

Answer key

  1. a conductor
  2. a spectacle lens
  3. True
  4. False
  5. False
  6. waterproof
  7. a conductor
  8. cotton cloth
  9. False
  10. a skipping rope
  11. a switch contact
  12. iron
  13. an insulator
  14. waterproof
  15. False
  16. rubber
  17. wood or plastic
  18. a water tank
  19. graphite
  20. the core of a wire
  21. False
  22. glass
  23. a plug pin
  24. aluminium
  25. an insulator
  26. copper
  27. a car windscreen
  28. an insulator
  29. a conductor
  30. flexible
  31. steel
  32. a tea flask lining
  33. electrical conductor
  34. plastic-coated cloth
  35. a cooking pot handle
  36. electrical conductor
  37. plastic
  38. a hair band
  39. waterproof
  40. waterproof

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