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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 803 · 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 a heat insulator? (a) a yoga mat (b) a skipping rope (c) a tea flask lining (d) a car windscreen
  2. 2.🧱 Which property matters most for a skipping rope? (a) waterproof (b) flexible (c) heat insulator (d) transparent
  3. 3.True or false: a car seat belt needs a flexible material. (a) True (b) False
  4. 4.🧱 Which property matters most for a plug pin? (a) electrical conductor (b) heat insulator (c) transparent (d) flexible
  5. 5.True or false: a yoga mat needs a waterproof material. (a) True (b) False
  6. 6.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🧱 Which property matters most for a magnifier lens? (a) waterproof (b) heat insulator (c) electrical conductor (d) transparent
  8. 8.🧱 Which material is best for a cooking pot handle? (a) copper (b) aluminium (c) iron (d) wood or plastic
  9. 9.Which of these needs a waterproof material? (a) a magnifier lens (b) a water tank (c) a tea flask lining (d) a car seat belt
  10. 10.🧱 Which property matters most for a roof sheet? (a) transparent (b) flexible (c) waterproof (d) heat insulator
  11. 11.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  12. 12.🔍 Which is the odd one out? (a) dry wood (b) aluminium (c) clay pottery (d) cotton cloth
  13. 13.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🔍 Which is the odd one out? (a) aluminium (b) brass (c) dry wood (d) steel
  15. 15.Which of these needs a flexible material? (a) a water tank (b) a skipping rope (c) a switch contact (d) a boat hull
  16. 16.🧱 Which property matters most for the core of a wire? (a) transparent (b) flexible (c) waterproof (d) electrical conductor
  17. 17.Which of these needs a flexible material? (a) a cooking pot handle (b) a magnifier lens (c) the core of a wire (d) a hair band
  18. 18.🔍 Which is the odd one out? (a) steel (b) copper (c) aluminium (d) clay pottery
  19. 19.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.Which of these needs a waterproof material? (a) a boat hull (b) a magnifier lens (c) a switch contact (d) an oven glove
  21. 21.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.True or false: a tea flask lining needs a transparent material. (a) True (b) False
  23. 23.Which of these needs a transparent material? (a) a plug pin (b) a window pane (c) a tea flask lining (d) a hair band
  24. 24.Which of these needs a heat insulator? (a) a hair band (b) an oven glove (c) a spectacle lens (d) a switch contact
  25. 25.🧱 Which material is best for a window pane? (a) brick (b) glass (c) wood (d) steel
  26. 26.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) transparent (c) electrical conductor (d) heat insulator
  28. 28.🧱 Which material is best for the bars inside concrete? (a) steel (b) glass (c) rubber (d) plastic
  29. 29.True or false: an oven glove needs a flexible material. (a) False (b) True
  30. 30.🔍 Which is the odd one out? (a) steel (b) glass (c) copper (d) graphite
  31. 31.True or false: a magnifier lens needs a flexible material. (a) True (b) False
  32. 32.🔍 Which is the odd one out? (a) steel (b) copper (c) aluminium (d) rubber
  33. 33.🧱 Which material is best for the core of an electric wire? (a) glass (b) copper (c) rubber (d) wood
  34. 34.🧱 Which property matters most for a yoga mat? (a) flexible (b) heat insulator (c) transparent (d) waterproof
  35. 35.True or false: a window pane needs a transparent material. (a) True (b) False
  36. 36.🧱 Which property matters most for a car windscreen? (a) electrical conductor (b) transparent (c) heat insulator (d) flexible
  37. 37.🧱 Which property matters most for a hair band? (a) heat insulator (b) waterproof (c) flexible (d) electrical conductor
  38. 38.Which of these needs a heat insulator? (a) a hair band (b) a yoga mat (c) a cooking pot handle (d) a switch contact
  39. 39.🔍 Which is the odd one out? (a) rubber (b) clay pottery (c) graphite (d) plastic
  40. 40.True or false: a switch contact needs a transparent material. (a) True (b) False

Answer key

  1. a tea flask lining
  2. flexible
  3. True
  4. electrical conductor
  5. False
  6. a conductor
  7. transparent
  8. wood or plastic
  9. a water tank
  10. waterproof
  11. an insulator
  12. aluminium
  13. a conductor
  14. dry wood
  15. a skipping rope
  16. electrical conductor
  17. a hair band
  18. clay pottery
  19. a conductor
  20. a boat hull
  21. an insulator
  22. False
  23. a window pane
  24. an oven glove
  25. glass
  26. an insulator
  27. heat insulator
  28. steel
  29. False
  30. glass
  31. False
  32. rubber
  33. copper
  34. flexible
  35. True
  36. transparent
  37. flexible
  38. a cooking pot handle
  39. graphite
  40. False

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