← Materials and their properties lesson New set →

Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 403 · 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 plug pin? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  2. 2.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.True or false: a cooking pot handle needs a transparent material. (a) True (b) False
  4. 4.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  7. 7.🧱 Which property matters most for a spectacle lens? (a) waterproof (b) heat insulator (c) transparent (d) flexible
  8. 8.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) copper (d) wood
  9. 9.🔍 Which is the odd one out? (a) dry wood (b) rubber (c) steel (d) plastic
  10. 10.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  11. 11.🔍 Which is the odd one out? (a) glass (b) aluminium (c) plastic (d) clay pottery
  12. 12.True or false: an umbrella cover needs a waterproof material. (a) True (b) False
  13. 13.🧱 Which property matters most for an oven glove? (a) transparent (b) waterproof (c) electrical conductor (d) heat insulator
  14. 14.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  15. 15.Which of these needs a heat insulator? (a) a plug pin (b) a yoga mat (c) a spectacle lens (d) a tea flask lining
  16. 16.Which of these needs a waterproof material? (a) a yoga mat (b) an umbrella cover (c) a car windscreen (d) a car seat belt
  17. 17.Which of these needs a transparent material? (a) a hair band (b) a magnifier lens (c) a raincoat (d) a cooking pot handle
  18. 18.Which of these needs an electrical conductor? (a) a tea flask lining (b) a skipping rope (c) a window pane (d) the core of a wire
  19. 19.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.Which of these needs a heat insulator? (a) a raincoat (b) a magnifier lens (c) a cooking pot handle (d) a window pane
  21. 21.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) steel (d) glass
  22. 22.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.True or false: a window pane needs a heat insulator. (a) True (b) False
  24. 24.🧱 Which material is best for a raincoat? (a) paper (b) cardboard (c) plastic-coated cloth (d) cotton wool
  25. 25.True or false: a switch contact needs a transparent material. (a) True (b) False
  26. 26.🧱 Which property matters most for a boat hull? (a) flexible (b) heat insulator (c) transparent (d) waterproof
  27. 27.True or false: a boat hull needs a waterproof material. (a) False (b) True
  28. 28.True or false: an oven glove needs a transparent material. (a) False (b) True
  29. 29.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🔍 Which is the odd one out? (a) plastic (b) cotton cloth (c) rubber (d) copper
  32. 32.🔍 Which is the odd one out? (a) glass (b) rubber (c) plastic (d) iron
  33. 33.True or false: a switch contact needs a heat insulator. (a) False (b) True
  34. 34.Which of these needs a flexible material? (a) a car windscreen (b) a car seat belt (c) the core of a wire (d) a switch contact
  35. 35.🧱 Which property matters most for a window pane? (a) flexible (b) electrical conductor (c) heat insulator (d) transparent
  36. 36.🧱 Which property matters most for a hair band? (a) heat insulator (b) waterproof (c) flexible (d) transparent
  37. 37.True or false: a car seat belt needs a flexible material. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) copper (b) aluminium (c) dry wood (d) brass
  39. 39.🔍 Which is the odd one out? (a) graphite (b) steel (c) copper (d) rubber
  40. 40.True or false: an oven glove needs an electrical conductor. (a) False (b) True

Answer key

  1. electrical conductor
  2. a conductor
  3. False
  4. a conductor
  5. an insulator
  6. an insulator
  7. transparent
  8. copper
  9. steel
  10. an insulator
  11. aluminium
  12. True
  13. heat insulator
  14. a conductor
  15. a tea flask lining
  16. an umbrella cover
  17. a magnifier lens
  18. the core of a wire
  19. an insulator
  20. a cooking pot handle
  21. steel
  22. a conductor
  23. False
  24. plastic-coated cloth
  25. False
  26. waterproof
  27. True
  28. False
  29. an insulator
  30. an insulator
  31. copper
  32. iron
  33. False
  34. a car seat belt
  35. transparent
  36. flexible
  37. True
  38. dry wood
  39. rubber
  40. False

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids