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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 832 · 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 is the odd one out? (a) plastic (b) aluminium (c) dry wood (d) rubber
  2. 2.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🧱 Which property matters most for a roof sheet? (a) electrical conductor (b) heat insulator (c) waterproof (d) flexible
  4. 4.True or false: the core of a wire needs a heat insulator. (a) True (b) False
  5. 5.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.🧱 Which material is best for the core of an electric wire? (a) wood (b) copper (c) glass (d) rubber
  7. 7.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.🧱 Which property matters most for a plug pin? (a) flexible (b) transparent (c) waterproof (d) electrical conductor
  9. 9.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  11. 11.🔍 Which is the odd one out? (a) iron (b) graphite (c) aluminium (d) rubber
  12. 12.Which of these needs a flexible material? (a) a roof sheet (b) a magnifier lens (c) the core of a wire (d) a skipping rope
  13. 13.True or false: a roof sheet needs a waterproof material. (a) False (b) True
  14. 14.🧱 Which property matters most for a yoga mat? (a) flexible (b) transparent (c) waterproof (d) heat insulator
  15. 15.🧱 Which material is best for a window pane? (a) steel (b) brick (c) wood (d) glass
  16. 16.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.Which of these needs a flexible material? (a) a plug pin (b) a boat hull (c) a car seat belt (d) a water tank
  18. 18.🧱 Which material is best for the bars inside concrete? (a) rubber (b) steel (c) glass (d) plastic
  19. 19.True or false: a car seat belt needs a flexible material. (a) False (b) True
  20. 20.🧱 Which property matters most for a skipping rope? (a) flexible (b) waterproof (c) transparent (d) electrical conductor
  21. 21.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  22. 22.🔍 Which is the odd one out? (a) cotton cloth (b) steel (c) iron (d) aluminium
  23. 23.🔍 Which is the odd one out? (a) glass (b) cotton cloth (c) dry wood (d) steel
  24. 24.Which of these needs an electrical conductor? (a) a boat hull (b) a yoga mat (c) a switch contact (d) a spectacle lens
  25. 25.True or false: a switch contact needs a waterproof material. (a) False (b) True
  26. 26.🧱 Which property matters most for a car windscreen? (a) heat insulator (b) transparent (c) flexible (d) waterproof
  27. 27.True or false: a hair band needs a flexible material. (a) False (b) True
  28. 28.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) paper (c) cotton wool (d) cardboard
  30. 30.🔍 Which is the odd one out? (a) clay pottery (b) cotton cloth (c) rubber (d) copper
  31. 31.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  32. 32.True or false: a water tank needs an electrical conductor. (a) True (b) False
  33. 33.True or false: an oven glove needs a heat insulator. (a) True (b) False
  34. 34.True or false: a roof sheet needs an electrical conductor. (a) True (b) False
  35. 35.🔍 Which is the odd one out? (a) aluminium (b) plastic (c) iron (d) graphite
  36. 36.🧱 Which property matters most for a window pane? (a) electrical conductor (b) waterproof (c) flexible (d) transparent
  37. 37.Which of these needs a transparent material? (a) a raincoat (b) a switch contact (c) a water tank (d) a spectacle lens
  38. 38.🔍 Which is the odd one out? (a) clay pottery (b) graphite (c) cotton cloth (d) glass
  39. 39.Which of these needs a heat insulator? (a) the core of a wire (b) a yoga mat (c) a cooking pot handle (d) a boat hull
  40. 40.🧱 Which property matters most for a tea flask lining? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible

Answer key

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

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