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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 398 · 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 cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.Which of these needs a flexible material? (a) an oven glove (b) the core of a wire (c) a raincoat (d) a car seat belt
  3. 3.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.Which of these needs a waterproof material? (a) a hair band (b) a skipping rope (c) a water tank (d) a car windscreen
  5. 5.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.True or false: a spectacle lens needs a transparent material. (a) False (b) True
  7. 7.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) copper (c) wood or plastic (d) iron
  8. 8.True or false: a tea flask lining needs an electrical conductor. (a) True (b) False
  9. 9.True or false: a raincoat needs an electrical conductor. (a) True (b) False
  10. 10.🧱 Which property matters most for a roof sheet? (a) heat insulator (b) waterproof (c) flexible (d) electrical conductor
  11. 11.True or false: a tea flask lining needs a flexible material. (a) True (b) False
  12. 12.🧱 Which property matters most for a yoga mat? (a) waterproof (b) flexible (c) transparent (d) heat insulator
  13. 13.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.🔍 Which is the odd one out? (a) graphite (b) copper (c) clay pottery (d) steel
  15. 15.🔍 Which is the odd one out? (a) rubber (b) iron (c) graphite (d) aluminium
  16. 16.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.True or false: a spectacle lens needs an electrical conductor. (a) True (b) False
  18. 18.🔍 Which is the odd one out? (a) clay pottery (b) cotton cloth (c) steel (d) glass
  19. 19.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) plastic (d) steel
  20. 20.True or false: a magnifier lens needs a waterproof material. (a) False (b) True
  21. 21.True or false: a cooking pot handle needs a transparent material. (a) True (b) False
  22. 22.Which of these needs a waterproof material? (a) a yoga mat (b) a car seat belt (c) a roof sheet (d) a spectacle lens
  23. 23.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  24. 24.🧱 Which property matters most for a window pane? (a) transparent (b) electrical conductor (c) waterproof (d) heat insulator
  25. 25.True or false: a car seat belt needs a flexible material. (a) False (b) True
  26. 26.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) rubber (d) glass
  27. 27.True or false: a skipping rope needs a waterproof material. (a) True (b) False
  28. 28.Which of these needs a transparent material? (a) a water tank (b) a boat hull (c) an umbrella cover (d) a magnifier lens
  29. 29.Which of these needs a heat insulator? (a) a spectacle lens (b) a water tank (c) a tea flask lining (d) a boat hull
  30. 30.🔍 Which is the odd one out? (a) plastic (b) rubber (c) copper (d) cotton cloth
  31. 31.Which of these needs a waterproof material? (a) a boat hull (b) a car seat belt (c) a cooking pot handle (d) the core of a wire
  32. 32.🧱 Which property matters most for a skipping rope? (a) waterproof (b) electrical conductor (c) heat insulator (d) flexible
  33. 33.🔍 Which is the odd one out? (a) rubber (b) plastic (c) aluminium (d) dry wood
  34. 34.Which of these needs a transparent material? (a) a raincoat (b) the core of a wire (c) a switch contact (d) a car windscreen
  35. 35.True or false: a magnifier lens needs a transparent material. (a) True (b) False
  36. 36.True or false: a yoga mat needs a flexible material. (a) True (b) False
  37. 37.🧱 Which property matters most for a plug pin? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  38. 38.Which of these needs a flexible material? (a) a magnifier lens (b) the core of a wire (c) a skipping rope (d) a switch contact
  39. 39.Which of these needs a flexible material? (a) a hair band (b) a window pane (c) a raincoat (d) the core of a wire
  40. 40.🧱 Which property matters most for a water tank? (a) transparent (b) flexible (c) electrical conductor (d) waterproof

Answer key

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

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