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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 82 · 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) dry wood (b) clay pottery (c) plastic (d) brass
  2. 2.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.🔍 Which is the odd one out? (a) copper (b) aluminium (c) brass (d) rubber
  4. 4.🔍 Which is the odd one out? (a) plastic (b) copper (c) brass (d) aluminium
  5. 5.🔍 Which is the odd one out? (a) rubber (b) dry wood (c) cotton cloth (d) copper
  6. 6.Which of these needs a transparent material? (a) a car windscreen (b) a plug pin (c) a boat hull (d) a skipping rope
  7. 7.Which of these needs a waterproof material? (a) a raincoat (b) a car windscreen (c) a spectacle lens (d) a tea flask lining
  8. 8.🧱 Which material is best for a cooking pot handle? (a) copper (b) wood or plastic (c) iron (d) aluminium
  9. 9.True or false: a cooking pot handle needs a waterproof material. (a) True (b) False
  10. 10.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) transparent (c) electrical conductor (d) waterproof
  11. 11.True or false: a skipping rope needs a flexible material. (a) False (b) True
  12. 12.🧱 Which property matters most for a switch contact? (a) heat insulator (b) waterproof (c) transparent (d) electrical conductor
  13. 13.Which of these needs a heat insulator? (a) a car seat belt (b) a car windscreen (c) an oven glove (d) a plug pin
  14. 14.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  15. 15.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  16. 16.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  18. 18.🔍 Which is the odd one out? (a) cotton cloth (b) iron (c) copper (d) aluminium
  19. 19.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.True or false: a switch contact needs a waterproof material. (a) True (b) False
  21. 21.🧱 Which property matters most for a tea flask lining? (a) transparent (b) waterproof (c) heat insulator (d) electrical conductor
  22. 22.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  23. 23.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  24. 24.🧱 Which material is best for the core of an electric wire? (a) rubber (b) copper (c) wood (d) glass
  25. 25.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.Which of these needs a flexible material? (a) a magnifier lens (b) a car windscreen (c) a yoga mat (d) the core of a wire
  27. 27.🧱 Which property matters most for an oven glove? (a) flexible (b) transparent (c) heat insulator (d) waterproof
  28. 28.🔍 Which is the odd one out? (a) cotton cloth (b) dry wood (c) glass (d) aluminium
  29. 29.🧱 Which property matters most for a roof sheet? (a) flexible (b) heat insulator (c) transparent (d) waterproof
  30. 30.🧱 Which property matters most for a yoga mat? (a) flexible (b) heat insulator (c) electrical conductor (d) transparent
  31. 31.🧱 Which material is best for a raincoat? (a) cotton wool (b) cardboard (c) plastic-coated cloth (d) paper
  32. 32.Which of these needs a waterproof material? (a) a car windscreen (b) a roof sheet (c) a cooking pot handle (d) a switch contact
  33. 33.Which of these needs a waterproof material? (a) a water tank (b) a magnifier lens (c) the core of a wire (d) a tea flask lining
  34. 34.Which of these needs an electrical conductor? (a) a car seat belt (b) the core of a wire (c) a spectacle lens (d) an umbrella cover
  35. 35.Which of these needs a transparent material? (a) a spectacle lens (b) a boat hull (c) a switch contact (d) a yoga mat
  36. 36.🧱 Which property matters most for a water tank? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  37. 37.True or false: a roof sheet needs a transparent material. (a) False (b) True
  38. 38.True or false: a water tank needs a waterproof material. (a) False (b) True
  39. 39.True or false: a switch contact needs a transparent material. (a) False (b) True
  40. 40.🧱 Which material is best for a window pane? (a) glass (b) steel (c) brick (d) wood

Answer key

  1. brass
  2. an insulator
  3. rubber
  4. plastic
  5. copper
  6. a car windscreen
  7. a raincoat
  8. wood or plastic
  9. False
  10. transparent
  11. True
  12. electrical conductor
  13. an oven glove
  14. True
  15. a conductor
  16. a conductor
  17. a conductor
  18. cotton cloth
  19. an insulator
  20. False
  21. heat insulator
  22. an insulator
  23. True
  24. copper
  25. an insulator
  26. a yoga mat
  27. heat insulator
  28. aluminium
  29. waterproof
  30. flexible
  31. plastic-coated cloth
  32. a roof sheet
  33. a water tank
  34. the core of a wire
  35. a spectacle lens
  36. waterproof
  37. False
  38. True
  39. False
  40. glass

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