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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 323 · 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.True or false: a skipping rope needs a flexible material. (a) False (b) True
  2. 2.🧱 Which material is best for the core of an electric wire? (a) rubber (b) wood (c) copper (d) glass
  3. 3.Which of these needs a flexible material? (a) a boat hull (b) a skipping rope (c) a plug pin (d) a window pane
  4. 4.🧱 Which property matters most for a hair band? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  5. 5.True or false: a raincoat needs a flexible material. (a) True (b) False
  6. 6.True or false: a magnifier lens needs a flexible material. (a) True (b) False
  7. 7.True or false: a switch contact needs a heat insulator. (a) True (b) False
  8. 8.🧱 Which material is best for a cooking pot handle? (a) copper (b) wood or plastic (c) iron (d) aluminium
  9. 9.🔍 Which is the odd one out? (a) clay pottery (b) glass (c) plastic (d) steel
  10. 10.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.🔍 Which is the odd one out? (a) glass (b) cotton cloth (c) graphite (d) dry wood
  12. 12.🔍 Which is the odd one out? (a) rubber (b) clay pottery (c) glass (d) copper
  13. 13.🔍 Which is the odd one out? (a) aluminium (b) rubber (c) brass (d) steel
  14. 14.Which of these needs an electrical conductor? (a) a raincoat (b) a switch contact (c) an oven glove (d) a water tank
  15. 15.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) cardboard (d) paper
  16. 16.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.True or false: a yoga mat needs a flexible material. (a) False (b) True
  18. 18.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  19. 19.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) steel (d) plastic
  21. 21.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🧱 Which property matters most for a car seat belt? (a) transparent (b) electrical conductor (c) flexible (d) waterproof
  23. 23.🧱 Which property matters most for a skipping rope? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  24. 24.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  25. 25.🧱 Which material is best for a window pane? (a) brick (b) wood (c) steel (d) glass
  26. 26.True or false: a spectacle lens needs a transparent material. (a) False (b) True
  27. 27.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.🔍 Which is the odd one out? (a) clay pottery (b) rubber (c) aluminium (d) cotton cloth
  29. 29.Which of these needs a waterproof material? (a) a car windscreen (b) a hair band (c) a tea flask lining (d) a roof sheet
  30. 30.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.Which of these needs a transparent material? (a) a cooking pot handle (b) a switch contact (c) a plug pin (d) a magnifier lens
  32. 32.True or false: a water tank needs a flexible material. (a) True (b) False
  33. 33.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  34. 34.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.True or false: a switch contact needs a transparent material. (a) True (b) False
  36. 36.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) flexible (c) electrical conductor (d) heat insulator
  37. 37.True or false: a boat hull needs a waterproof material. (a) True (b) False
  38. 38.🧱 Which property matters most for a raincoat? (a) electrical conductor (b) transparent (c) heat insulator (d) waterproof
  39. 39.True or false: a window pane needs a transparent material. (a) True (b) False
  40. 40.🧱 Which property matters most for a magnifier lens? (a) transparent (b) heat insulator (c) flexible (d) electrical conductor

Answer key

  1. True
  2. copper
  3. a skipping rope
  4. flexible
  5. False
  6. False
  7. False
  8. wood or plastic
  9. steel
  10. a conductor
  11. graphite
  12. copper
  13. rubber
  14. a switch contact
  15. plastic-coated cloth
  16. an insulator
  17. True
  18. a conductor
  19. an insulator
  20. steel
  21. an insulator
  22. flexible
  23. flexible
  24. a conductor
  25. glass
  26. True
  27. a conductor
  28. aluminium
  29. a roof sheet
  30. a conductor
  31. a magnifier lens
  32. False
  33. True
  34. an insulator
  35. False
  36. heat insulator
  37. True
  38. waterproof
  39. True
  40. transparent

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