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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 650 · 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 rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  4. 4.True or false: a plug pin needs a flexible material. (a) True (b) False
  5. 5.🧱 Which material is best for the bars inside concrete? (a) plastic (b) glass (c) steel (d) rubber
  6. 6.True or false: a magnifier lens needs an electrical conductor. (a) False (b) True
  7. 7.🔍 Which is the odd one out? (a) steel (b) copper (c) aluminium (d) rubber
  8. 8.True or false: a tea flask lining needs a transparent material. (a) False (b) True
  9. 9.🧱 Which material is best for a raincoat? (a) cardboard (b) paper (c) cotton wool (d) plastic-coated cloth
  10. 10.🧱 Which property matters most for a hair band? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
  11. 11.🧱 Which property matters most for a tea flask lining? (a) waterproof (b) flexible (c) transparent (d) heat insulator
  12. 12.Which of these needs a transparent material? (a) a cooking pot handle (b) an umbrella cover (c) a plug pin (d) a spectacle lens
  13. 13.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.🧱 Which property matters most for a window pane? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  15. 15.🔍 Which is the odd one out? (a) graphite (b) copper (c) iron (d) clay pottery
  16. 16.Which of these needs a transparent material? (a) a roof sheet (b) a hair band (c) a yoga mat (d) a window pane
  17. 17.🧱 Which material is best for a cooking pot handle? (a) iron (b) aluminium (c) copper (d) wood or plastic
  18. 18.🧱 Which property matters most for a water tank? (a) electrical conductor (b) transparent (c) waterproof (d) flexible
  19. 19.True or false: a car seat belt needs a flexible material. (a) False (b) True
  20. 20.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🔍 Which is the odd one out? (a) plastic (b) graphite (c) copper (d) iron
  22. 22.🧱 Which property matters most for a boat hull? (a) flexible (b) waterproof (c) electrical conductor (d) heat insulator
  23. 23.True or false: a spectacle lens needs a transparent material. (a) True (b) False
  24. 24.Which of these needs a waterproof material? (a) a skipping rope (b) a boat hull (c) a plug pin (d) a switch contact
  25. 25.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) copper (d) wood
  26. 26.True or false: a raincoat needs an electrical conductor. (a) False (b) True
  27. 27.True or false: an oven glove needs an electrical conductor. (a) False (b) True
  28. 28.🧱 Which property matters most for a plug pin? (a) transparent (b) flexible (c) electrical conductor (d) heat insulator
  29. 29.Which of these needs a transparent material? (a) a magnifier lens (b) an umbrella cover (c) the core of a wire (d) a tea flask lining
  30. 30.🔍 Which is the odd one out? (a) iron (b) glass (c) steel (d) copper
  31. 31.🔍 Which is the odd one out? (a) copper (b) rubber (c) clay pottery (d) dry wood
  32. 32.Which of these needs an electrical conductor? (a) the core of a wire (b) a water tank (c) a skipping rope (d) a car seat belt
  33. 33.Which of these needs a flexible material? (a) a spectacle lens (b) a car seat belt (c) a tea flask lining (d) a water tank
  34. 34.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.🔍 Which is the odd one out? (a) clay pottery (b) iron (c) rubber (d) cotton cloth
  36. 36.🧱 Which property matters most for a raincoat? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  37. 37.🧱 Which property matters most for a switch contact? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  38. 38.🔍 Which is the odd one out? (a) plastic (b) glass (c) cotton cloth (d) brass
  39. 39.Which of these needs an electrical conductor? (a) a plug pin (b) a boat hull (c) a cooking pot handle (d) a car windscreen
  40. 40.Which of these needs a waterproof material? (a) a window pane (b) a switch contact (c) a raincoat (d) a tea flask lining

Answer key

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

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