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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 88 · 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 property matters most for a yoga mat? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  2. 2.🔍 Which is the odd one out? (a) graphite (b) copper (c) rubber (d) aluminium
  3. 3.🧱 Which material is best for a window pane? (a) steel (b) wood (c) glass (d) brick
  4. 4.🔍 Which is the odd one out? (a) copper (b) rubber (c) dry wood (d) plastic
  5. 5.Which of these needs a transparent material? (a) a magnifier lens (b) the core of a wire (c) a plug pin (d) a car seat belt
  6. 6.🧱 Which property matters most for a tea flask lining? (a) flexible (b) electrical conductor (c) transparent (d) heat insulator
  7. 7.True or false: a car seat belt needs an electrical conductor. (a) True (b) False
  8. 8.Which of these needs a heat insulator? (a) a raincoat (b) a plug pin (c) an oven glove (d) a yoga mat
  9. 9.Which of these needs a transparent material? (a) a boat hull (b) a car seat belt (c) a spectacle lens (d) a raincoat
  10. 10.True or false: a car windscreen needs a transparent material. (a) True (b) False
  11. 11.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.Which of these needs a flexible material? (a) a raincoat (b) a tea flask lining (c) a boat hull (d) a hair band
  13. 13.Which of these needs a waterproof material? (a) a cooking pot handle (b) a window pane (c) a hair band (d) a boat hull
  14. 14.🔍 Which is the odd one out? (a) plastic (b) glass (c) cotton cloth (d) graphite
  15. 15.🧱 Which material is best for the core of an electric wire? (a) wood (b) copper (c) rubber (d) glass
  16. 16.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.True or false: a yoga mat needs a flexible material. (a) True (b) False
  18. 18.🧱 Which property matters most for a window pane? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  19. 19.Which of these needs a flexible material? (a) a boat hull (b) a car windscreen (c) a yoga mat (d) a raincoat
  20. 20.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  21. 21.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) cardboard (d) paper
  22. 22.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.Which of these needs an electrical conductor? (a) a cooking pot handle (b) an umbrella cover (c) a roof sheet (d) a plug pin
  24. 24.True or false: a skipping rope needs an electrical conductor. (a) True (b) False
  25. 25.🔍 Which is the odd one out? (a) dry wood (b) glass (c) aluminium (d) plastic
  26. 26.True or false: an umbrella cover needs an electrical conductor. (a) False (b) True
  27. 27.🧱 Which property matters most for a water tank? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
  28. 28.Which of these needs a flexible material? (a) a spectacle lens (b) a tea flask lining (c) a water tank (d) a car seat belt
  29. 29.Which of these needs a waterproof material? (a) a cooking pot handle (b) a hair band (c) a spectacle lens (d) a water tank
  30. 30.🔍 Which is the odd one out? (a) iron (b) dry wood (c) brass (d) copper
  31. 31.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) aluminium (c) copper (d) iron
  32. 32.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) heat insulator (c) flexible (d) transparent
  33. 33.🧱 Which property matters most for the core of a wire? (a) flexible (b) electrical conductor (c) heat insulator (d) waterproof
  34. 34.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.True or false: a car windscreen needs a heat insulator. (a) False (b) True
  36. 36.🧱 Which property matters most for a roof sheet? (a) flexible (b) transparent (c) waterproof (d) heat insulator
  37. 37.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🧱 Which property matters most for a raincoat? (a) heat insulator (b) flexible (c) waterproof (d) transparent
  39. 39.🔍 Which is the odd one out? (a) steel (b) glass (c) aluminium (d) graphite
  40. 40.🔍 Which is the odd one out? (a) cotton cloth (b) steel (c) iron (d) aluminium

Answer key

  1. flexible
  2. rubber
  3. glass
  4. copper
  5. a magnifier lens
  6. heat insulator
  7. False
  8. an oven glove
  9. a spectacle lens
  10. True
  11. an insulator
  12. a hair band
  13. a boat hull
  14. graphite
  15. copper
  16. a conductor
  17. True
  18. transparent
  19. a yoga mat
  20. a conductor
  21. plastic-coated cloth
  22. a conductor
  23. a plug pin
  24. False
  25. aluminium
  26. False
  27. waterproof
  28. a car seat belt
  29. a water tank
  30. dry wood
  31. wood or plastic
  32. electrical conductor
  33. electrical conductor
  34. an insulator
  35. False
  36. waterproof
  37. an insulator
  38. waterproof
  39. glass
  40. cotton cloth

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