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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 224 · 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 material is best for the bars inside concrete? (a) plastic (b) rubber (c) steel (d) glass
  2. 2.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🔍 Which is the odd one out? (a) cotton cloth (b) aluminium (c) glass (d) rubber
  4. 4.🔍 Which is the odd one out? (a) iron (b) cotton cloth (c) steel (d) aluminium
  5. 5.🔍 Which is the odd one out? (a) copper (b) brass (c) rubber (d) aluminium
  6. 6.True or false: a roof sheet needs a transparent material. (a) True (b) False
  7. 7.Which of these needs a heat insulator? (a) an umbrella cover (b) a raincoat (c) a window pane (d) a cooking pot handle
  8. 8.Which of these needs a transparent material? (a) a raincoat (b) an oven glove (c) a hair band (d) a window pane
  9. 9.True or false: a car seat belt needs a heat insulator. (a) True (b) False
  10. 10.True or false: a window pane needs a flexible material. (a) True (b) False
  11. 11.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  12. 12.Which of these needs a flexible material? (a) a raincoat (b) an umbrella cover (c) a spectacle lens (d) a hair band
  13. 13.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) waterproof (c) flexible (d) heat insulator
  14. 14.🧱 Which material is best for the core of an electric wire? (a) glass (b) rubber (c) copper (d) wood
  15. 15.True or false: a yoga mat needs a heat insulator. (a) False (b) True
  16. 16.🔍 Which is the odd one out? (a) rubber (b) clay pottery (c) graphite (d) cotton cloth
  17. 17.Which of these needs a waterproof material? (a) a plug pin (b) a magnifier lens (c) a yoga mat (d) an umbrella cover
  18. 18.🔍 Which is the odd one out? (a) cotton cloth (b) glass (c) rubber (d) iron
  19. 19.True or false: an umbrella cover needs a waterproof material. (a) False (b) True
  20. 20.🧱 Which property matters most for a hair band? (a) waterproof (b) electrical conductor (c) transparent (d) flexible
  21. 21.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  22. 22.🧱 Which property matters most for a skipping rope? (a) heat insulator (b) waterproof (c) transparent (d) flexible
  23. 23.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  24. 24.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  26. 26.Which of these needs a waterproof material? (a) a window pane (b) a yoga mat (c) a raincoat (d) a car seat belt
  27. 27.🔍 Which is the odd one out? (a) copper (b) aluminium (c) iron (d) clay pottery
  28. 28.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.True or false: a window pane needs a transparent material. (a) False (b) True
  31. 31.🧱 Which property matters most for a boat hull? (a) transparent (b) heat insulator (c) electrical conductor (d) waterproof
  32. 32.True or false: a car windscreen needs a transparent material. (a) False (b) True
  33. 33.🔍 Which is the odd one out? (a) cotton cloth (b) plastic (c) brass (d) clay pottery
  34. 34.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.True or false: a tea flask lining needs a heat insulator. (a) True (b) False
  36. 36.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  37. 37.Which of these needs an electrical conductor? (a) a cooking pot handle (b) an umbrella cover (c) a switch contact (d) a skipping rope
  38. 38.🧱 Which property matters most for a roof sheet? (a) waterproof (b) electrical conductor (c) transparent (d) heat insulator
  39. 39.Which of these needs a flexible material? (a) a skipping rope (b) a boat hull (c) a roof sheet (d) the core of a wire
  40. 40.🧱 Which property matters most for an oven glove? (a) flexible (b) transparent (c) heat insulator (d) electrical conductor

Answer key

  1. steel
  2. an insulator
  3. aluminium
  4. cotton cloth
  5. rubber
  6. False
  7. a cooking pot handle
  8. a window pane
  9. False
  10. False
  11. a conductor
  12. a hair band
  13. electrical conductor
  14. copper
  15. False
  16. graphite
  17. an umbrella cover
  18. iron
  19. True
  20. flexible
  21. True
  22. flexible
  23. a conductor
  24. an insulator
  25. True
  26. a raincoat
  27. clay pottery
  28. an insulator
  29. an insulator
  30. True
  31. waterproof
  32. True
  33. brass
  34. an insulator
  35. True
  36. a conductor
  37. a switch contact
  38. waterproof
  39. a skipping rope
  40. heat insulator

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