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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 79 · 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 water tank (b) a hair band (c) an oven glove (d) a plug pin
  2. 2.🧱 Which property matters most for a raincoat? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  3. 3.🔍 Which is the odd one out? (a) clay pottery (b) iron (c) copper (d) aluminium
  4. 4.Which of these needs a waterproof material? (a) a skipping rope (b) a window pane (c) a yoga mat (d) a roof sheet
  5. 5.🧱 Which material is best for a window pane? (a) brick (b) glass (c) wood (d) steel
  6. 6.🧱 Which property matters most for a magnifier lens? (a) transparent (b) heat insulator (c) waterproof (d) electrical conductor
  7. 7.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  8. 8.🧱 Which material is best for a cooking pot handle? (a) iron (b) copper (c) wood or plastic (d) aluminium
  9. 9.🧱 Which material is best for the bars inside concrete? (a) rubber (b) plastic (c) glass (d) steel
  10. 10.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  11. 11.🧱 Which material is best for the core of an electric wire? (a) rubber (b) wood (c) glass (d) copper
  12. 12.🧱 Which property matters most for a tea flask lining? (a) heat insulator (b) waterproof (c) transparent (d) electrical conductor
  13. 13.True or false: a raincoat needs a flexible material. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) brass (b) rubber (c) graphite (d) iron
  15. 15.True or false: the core of a wire needs a transparent material. (a) True (b) False
  16. 16.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.True or false: an umbrella cover needs a flexible material. (a) False (b) True
  18. 18.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) heat insulator (c) electrical conductor (d) flexible
  19. 19.Which of these needs a waterproof material? (a) an oven glove (b) an umbrella cover (c) a hair band (d) a window pane
  20. 20.🧱 Which property matters most for a switch contact? (a) waterproof (b) electrical conductor (c) flexible (d) heat insulator
  21. 21.Which of these needs a flexible material? (a) a raincoat (b) a window pane (c) a car seat belt (d) a magnifier lens
  22. 22.🧱 Which property matters most for a hair band? (a) heat insulator (b) waterproof (c) transparent (d) flexible
  23. 23.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  24. 24.Which of these needs a flexible material? (a) a spectacle lens (b) a plug pin (c) an umbrella cover (d) a skipping rope
  25. 25.🔍 Which is the odd one out? (a) glass (b) aluminium (c) dry wood (d) plastic
  26. 26.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🔍 Which is the odd one out? (a) steel (b) aluminium (c) dry wood (d) brass
  28. 28.🔍 Which is the odd one out? (a) copper (b) aluminium (c) brass (d) plastic
  29. 29.Which of these needs a waterproof material? (a) a yoga mat (b) a boat hull (c) a switch contact (d) the core of a wire
  30. 30.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible
  32. 32.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  33. 33.🧱 Which property matters most for a boat hull? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
  34. 34.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.🔍 Which is the odd one out? (a) clay pottery (b) glass (c) rubber (d) steel
  36. 36.True or false: a magnifier lens needs an electrical conductor. (a) False (b) True
  37. 37.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.True or false: a roof sheet needs a waterproof material. (a) True (b) False
  39. 39.🔍 Which is the odd one out? (a) iron (b) aluminium (c) brass (d) glass
  40. 40.True or false: a boat hull needs a waterproof material. (a) True (b) False

Answer key

  1. a plug pin
  2. waterproof
  3. clay pottery
  4. a roof sheet
  5. glass
  6. transparent
  7. a conductor
  8. wood or plastic
  9. steel
  10. an insulator
  11. copper
  12. heat insulator
  13. False
  14. rubber
  15. False
  16. a conductor
  17. False
  18. waterproof
  19. an umbrella cover
  20. electrical conductor
  21. a car seat belt
  22. flexible
  23. True
  24. a skipping rope
  25. aluminium
  26. an insulator
  27. dry wood
  28. plastic
  29. a boat hull
  30. an insulator
  31. flexible
  32. a conductor
  33. waterproof
  34. an insulator
  35. steel
  36. False
  37. a conductor
  38. True
  39. glass
  40. True

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