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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 688 · 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 property matters most for a boat hull? (a) waterproof (b) electrical conductor (c) flexible (d) heat insulator
  2. 2.🧱 Which material is best for a raincoat? (a) cotton wool (b) cardboard (c) paper (d) plastic-coated cloth
  3. 3.🔍 Which is the odd one out? (a) graphite (b) plastic (c) clay pottery (d) cotton cloth
  4. 4.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) iron (c) aluminium (d) copper
  5. 5.Which of these needs a flexible material? (a) an umbrella cover (b) a boat hull (c) a yoga mat (d) a switch contact
  6. 6.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) heat insulator (c) transparent (d) flexible
  7. 7.True or false: a roof sheet needs an electrical conductor. (a) False (b) True
  8. 8.True or false: a roof sheet needs a waterproof material. (a) False (b) True
  9. 9.True or false: a skipping rope needs a flexible material. (a) True (b) False
  10. 10.True or false: a yoga mat needs a transparent material. (a) True (b) False
  11. 11.Which of these needs an electrical conductor? (a) a boat hull (b) a spectacle lens (c) an oven glove (d) a plug pin
  12. 12.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.Which of these needs a waterproof material? (a) a car windscreen (b) a switch contact (c) a window pane (d) a boat hull
  15. 15.Which of these needs a flexible material? (a) a skipping rope (b) a water tank (c) a plug pin (d) a spectacle lens
  16. 16.🔍 Which is the odd one out? (a) iron (b) brass (c) dry wood (d) aluminium
  17. 17.🧱 Which property matters most for a spectacle lens? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  18. 18.True or false: a plug pin needs a heat insulator. (a) False (b) True
  19. 19.🧱 Which property matters most for a plug pin? (a) heat insulator (b) flexible (c) waterproof (d) electrical conductor
  20. 20.Which of these needs a flexible material? (a) a boat hull (b) a car windscreen (c) a car seat belt (d) an umbrella cover
  21. 21.🧱 Which property matters most for the core of a wire? (a) electrical conductor (b) transparent (c) flexible (d) waterproof
  22. 22.🧱 Which property matters most for a cooking pot handle? (a) heat insulator (b) flexible (c) transparent (d) electrical conductor
  23. 23.🧱 Which property matters most for a yoga mat? (a) electrical conductor (b) flexible (c) waterproof (d) transparent
  24. 24.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.Which of these needs a transparent material? (a) a raincoat (b) a water tank (c) a car windscreen (d) a tea flask lining
  26. 26.🔍 Which is the odd one out? (a) graphite (b) brass (c) rubber (d) aluminium
  27. 27.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.🧱 Which material is best for the core of an electric wire? (a) wood (b) copper (c) rubber (d) glass
  29. 29.Which of these needs a transparent material? (a) a hair band (b) a car seat belt (c) a skipping rope (d) a window pane
  30. 30.🧱 Which property matters most for a water tank? (a) heat insulator (b) waterproof (c) transparent (d) flexible
  31. 31.🔍 Which is the odd one out? (a) plastic (b) brass (c) clay pottery (d) rubber
  32. 32.Which of these needs a heat insulator? (a) a roof sheet (b) a yoga mat (c) a cooking pot handle (d) a car windscreen
  33. 33.True or false: the core of a wire needs a flexible material. (a) False (b) True
  34. 34.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  36. 36.🧱 Which property matters most for a magnifier lens? (a) heat insulator (b) transparent (c) electrical conductor (d) waterproof
  37. 37.Which of these needs a heat insulator? (a) a switch contact (b) a boat hull (c) a spectacle lens (d) a tea flask lining
  38. 38.True or false: an umbrella cover needs a flexible material. (a) True (b) False
  39. 39.🔍 Which is the odd one out? (a) plastic (b) cotton cloth (c) glass (d) copper
  40. 40.🧱 Which property matters most for a raincoat? (a) flexible (b) transparent (c) waterproof (d) heat insulator

Answer key

  1. waterproof
  2. plastic-coated cloth
  3. graphite
  4. wood or plastic
  5. a yoga mat
  6. flexible
  7. False
  8. True
  9. True
  10. False
  11. a plug pin
  12. an insulator
  13. an insulator
  14. a boat hull
  15. a skipping rope
  16. dry wood
  17. transparent
  18. False
  19. electrical conductor
  20. a car seat belt
  21. electrical conductor
  22. heat insulator
  23. flexible
  24. a conductor
  25. a car windscreen
  26. rubber
  27. a conductor
  28. copper
  29. a window pane
  30. waterproof
  31. brass
  32. a cooking pot handle
  33. False
  34. a conductor
  35. an insulator
  36. transparent
  37. a tea flask lining
  38. False
  39. copper
  40. waterproof

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