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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 902 · 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 glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.🧱 Which material is best for the core of an electric wire? (a) copper (b) rubber (c) wood (d) glass
  3. 3.Which of these needs a heat insulator? (a) an oven glove (b) a skipping rope (c) a car windscreen (d) a car seat belt
  4. 4.Which of these needs a flexible material? (a) a skipping rope (b) a window pane (c) a roof sheet (d) a switch contact
  5. 5.🧱 Which property matters most for a car seat belt? (a) heat insulator (b) waterproof (c) flexible (d) electrical conductor
  6. 6.Which of these needs an electrical conductor? (a) an oven glove (b) a switch contact (c) a water tank (d) a roof sheet
  7. 7.🔍 Which is the odd one out? (a) plastic (b) clay pottery (c) copper (d) dry wood
  8. 8.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  10. 10.🔍 Which is the odd one out? (a) plastic (b) brass (c) iron (d) copper
  11. 11.🔍 Which is the odd one out? (a) iron (b) rubber (c) aluminium (d) brass
  12. 12.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.🔍 Which is the odd one out? (a) brass (b) glass (c) rubber (d) cotton cloth
  14. 14.🧱 Which property matters most for a magnifier lens? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  15. 15.Which of these needs a transparent material? (a) an umbrella cover (b) a raincoat (c) a window pane (d) a water tank
  16. 16.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) paper (d) cardboard
  17. 17.Which of these needs a heat insulator? (a) an umbrella cover (b) a switch contact (c) a cooking pot handle (d) a plug pin
  18. 18.🧱 Which property matters most for a plug pin? (a) heat insulator (b) flexible (c) electrical conductor (d) waterproof
  19. 19.Which of these needs an electrical conductor? (a) a plug pin (b) a hair band (c) a cooking pot handle (d) a car seat belt
  20. 20.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  21. 21.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) transparent (c) heat insulator (d) waterproof
  22. 22.🧱 Which property matters most for the core of a wire? (a) electrical conductor (b) heat insulator (c) waterproof (d) flexible
  23. 23.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) steel (d) glass
  24. 24.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.Which of these needs an electrical conductor? (a) a raincoat (b) a spectacle lens (c) the core of a wire (d) a magnifier lens
  26. 26.🔍 Which is the odd one out? (a) brass (b) iron (c) copper (d) dry wood
  27. 27.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.🔍 Which is the odd one out? (a) dry wood (b) plastic (c) graphite (d) rubber
  29. 29.🧱 Which property matters most for a tea flask lining? (a) flexible (b) waterproof (c) electrical conductor (d) heat insulator
  30. 30.True or false: a cooking pot handle needs a transparent material. (a) False (b) True
  31. 31.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.Which of these needs a transparent material? (a) a spectacle lens (b) the core of a wire (c) a hair band (d) a boat hull
  33. 33.🔍 Which is the odd one out? (a) copper (b) clay pottery (c) iron (d) steel
  34. 34.Which of these needs a transparent material? (a) an oven glove (b) a magnifier lens (c) a car seat belt (d) a switch contact
  35. 35.🧱 Which material is best for a window pane? (a) wood (b) glass (c) steel (d) brick
  36. 36.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  37. 37.Which of these needs a waterproof material? (a) a car seat belt (b) a spectacle lens (c) a raincoat (d) a window pane
  38. 38.Which of these needs a flexible material? (a) an oven glove (b) an umbrella cover (c) a spectacle lens (d) a car seat belt
  39. 39.Which of these needs a heat insulator? (a) a hair band (b) a car windscreen (c) a roof sheet (d) a tea flask lining
  40. 40.True or false: a car seat belt needs a flexible material. (a) False (b) True

Answer key

  1. an insulator
  2. copper
  3. an oven glove
  4. a skipping rope
  5. flexible
  6. a switch contact
  7. copper
  8. a conductor
  9. a conductor
  10. plastic
  11. rubber
  12. an insulator
  13. brass
  14. transparent
  15. a window pane
  16. plastic-coated cloth
  17. a cooking pot handle
  18. electrical conductor
  19. a plug pin
  20. a conductor
  21. waterproof
  22. electrical conductor
  23. steel
  24. an insulator
  25. the core of a wire
  26. dry wood
  27. a conductor
  28. graphite
  29. heat insulator
  30. False
  31. an insulator
  32. a spectacle lens
  33. clay pottery
  34. a magnifier lens
  35. glass
  36. an insulator
  37. a raincoat
  38. a car seat belt
  39. a tea flask lining
  40. True

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