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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 450 · 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 an electrical conductor? (a) a roof sheet (b) a skipping rope (c) a switch contact (d) a raincoat
  2. 2.🧱 Which material is best for the core of an electric wire? (a) rubber (b) copper (c) glass (d) wood
  3. 3.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.🧱 Which material is best for a raincoat? (a) cardboard (b) cotton wool (c) plastic-coated cloth (d) paper
  5. 5.🔍 Which is the odd one out? (a) steel (b) rubber (c) iron (d) copper
  6. 6.🧱 Which property matters most for a window pane? (a) flexible (b) waterproof (c) transparent (d) electrical conductor
  7. 7.🔍 Which is the odd one out? (a) brass (b) glass (c) iron (d) aluminium
  8. 8.🔍 Which is the odd one out? (a) dry wood (b) plastic (c) graphite (d) cotton cloth
  9. 9.Which of these needs a transparent material? (a) a window pane (b) a switch contact (c) a boat hull (d) a cooking pot handle
  10. 10.🔍 Which is the odd one out? (a) aluminium (b) dry wood (c) plastic (d) clay pottery
  11. 11.🧱 Which property matters most for a hair band? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  12. 12.🧱 Which material is best for a cooking pot handle? (a) copper (b) aluminium (c) wood or plastic (d) iron
  13. 13.🔍 Which is the odd one out? (a) glass (b) plastic (c) rubber (d) steel
  14. 14.Which of these needs a flexible material? (a) an umbrella cover (b) a yoga mat (c) a water tank (d) a roof sheet
  15. 15.🔍 Which is the odd one out? (a) brass (b) iron (c) dry wood (d) graphite
  16. 16.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🧱 Which property matters most for a boat hull? (a) heat insulator (b) transparent (c) waterproof (d) flexible
  18. 18.True or false: a spectacle lens needs a flexible material. (a) True (b) False
  19. 19.🧱 Which property matters most for an umbrella cover? (a) heat insulator (b) transparent (c) electrical conductor (d) waterproof
  20. 20.Which of these needs a waterproof material? (a) a switch contact (b) an umbrella cover (c) a car seat belt (d) a tea flask lining
  21. 21.🔍 Which is the odd one out? (a) brass (b) cotton cloth (c) graphite (d) aluminium
  22. 22.True or false: a magnifier lens needs a transparent material. (a) False (b) True
  23. 23.Which of these needs a flexible material? (a) a car windscreen (b) a water tank (c) a car seat belt (d) the core of a wire
  24. 24.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.True or false: a water tank needs a waterproof material. (a) False (b) True
  26. 26.True or false: a hair band needs a transparent material. (a) False (b) True
  27. 27.Which of these needs a waterproof material? (a) a switch contact (b) a car windscreen (c) a boat hull (d) a cooking pot handle
  28. 28.True or false: a car seat belt needs a waterproof material. (a) True (b) False
  29. 29.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.Which of these needs a heat insulator? (a) a spectacle lens (b) a tea flask lining (c) a switch contact (d) a plug pin
  32. 32.True or false: a boat hull needs a transparent material. (a) False (b) True
  33. 33.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) electrical conductor (c) transparent (d) flexible
  34. 34.🧱 Which material is best for the bars inside concrete? (a) glass (b) plastic (c) rubber (d) steel
  35. 35.🧱 Which material is best for a window pane? (a) wood (b) steel (c) brick (d) glass
  36. 36.🧱 Which property matters most for a yoga mat? (a) transparent (b) heat insulator (c) electrical conductor (d) flexible
  37. 37.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.🧱 Which property matters most for a skipping rope? (a) transparent (b) electrical conductor (c) heat insulator (d) flexible
  39. 39.True or false: a car windscreen needs a transparent material. (a) True (b) False
  40. 40.True or false: a boat hull needs a waterproof material. (a) False (b) True

Answer key

  1. a switch contact
  2. copper
  3. an insulator
  4. plastic-coated cloth
  5. rubber
  6. transparent
  7. glass
  8. graphite
  9. a window pane
  10. aluminium
  11. flexible
  12. wood or plastic
  13. steel
  14. a yoga mat
  15. dry wood
  16. a conductor
  17. waterproof
  18. False
  19. waterproof
  20. an umbrella cover
  21. cotton cloth
  22. True
  23. a car seat belt
  24. a conductor
  25. True
  26. False
  27. a boat hull
  28. False
  29. a conductor
  30. a conductor
  31. a tea flask lining
  32. False
  33. transparent
  34. steel
  35. glass
  36. flexible
  37. an insulator
  38. flexible
  39. True
  40. True

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