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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 639 · 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 of these needs a waterproof material? (a) a magnifier lens (b) a car windscreen (c) a raincoat (d) the core of a wire
  2. 2.Which of these needs an electrical conductor? (a) a water tank (b) a car windscreen (c) the core of a wire (d) a cooking pot handle
  3. 3.🧱 Which material is best for the core of an electric wire? (a) rubber (b) wood (c) copper (d) glass
  4. 4.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  5. 5.🔍 Which is the odd one out? (a) dry wood (b) brass (c) steel (d) iron
  6. 6.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.Which of these needs an electrical conductor? (a) a switch contact (b) a cooking pot handle (c) a roof sheet (d) a skipping rope
  8. 8.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) glass (d) steel
  9. 9.🧱 Which property matters most for an umbrella cover? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  10. 10.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  11. 11.🧱 Is dry wood 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 cooking pot handle (c) a boat hull (d) a hair band
  13. 13.🧱 Which property matters most for a plug pin? (a) electrical conductor (b) waterproof (c) flexible (d) transparent
  14. 14.Which of these needs a waterproof material? (a) a roof sheet (b) a plug pin (c) a window pane (d) a car seat belt
  15. 15.Which of these needs a flexible material? (a) an umbrella cover (b) a plug pin (c) a car seat belt (d) a magnifier lens
  16. 16.🧱 Which material is best for a window pane? (a) wood (b) brick (c) glass (d) steel
  17. 17.🧱 Which property matters most for a skipping rope? (a) heat insulator (b) transparent (c) flexible (d) electrical conductor
  18. 18.🧱 Which property matters most for a cooking pot handle? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  19. 19.🧱 Which property matters most for a boat hull? (a) waterproof (b) heat insulator (c) electrical conductor (d) flexible
  20. 20.Which of these needs a flexible material? (a) a cooking pot handle (b) a spectacle lens (c) a skipping rope (d) a tea flask lining
  21. 21.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cardboard (c) cotton wool (d) paper
  24. 24.Which of these needs a waterproof material? (a) a car windscreen (b) a tea flask lining (c) a spectacle lens (d) an umbrella cover
  25. 25.True or false: an umbrella cover needs a waterproof material. (a) False (b) True
  26. 26.🧱 Which property matters most for a yoga mat? (a) transparent (b) electrical conductor (c) heat insulator (d) flexible
  27. 27.Which of these needs a heat insulator? (a) an oven glove (b) a water tank (c) a plug pin (d) a yoga mat
  28. 28.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) copper (c) wood or plastic (d) iron
  29. 29.🧱 Which property matters most for a spectacle lens? (a) electrical conductor (b) heat insulator (c) transparent (d) flexible
  30. 30.True or false: a yoga mat needs a heat insulator. (a) False (b) True
  31. 31.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.True or false: a tea flask lining needs an electrical conductor. (a) False (b) True
  33. 33.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.🔍 Which is the odd one out? (a) dry wood (b) glass (c) rubber (d) graphite
  35. 35.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  37. 37.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) transparent (c) heat insulator (d) flexible
  38. 38.True or false: a tea flask lining needs a transparent material. (a) False (b) True
  39. 39.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  40. 40.🔍 Which is the odd one out? (a) dry wood (b) cotton cloth (c) plastic (d) iron

Answer key

  1. a raincoat
  2. the core of a wire
  3. copper
  4. True
  5. dry wood
  6. a conductor
  7. a switch contact
  8. steel
  9. waterproof
  10. a conductor
  11. an insulator
  12. a hair band
  13. electrical conductor
  14. a roof sheet
  15. a car seat belt
  16. glass
  17. flexible
  18. heat insulator
  19. waterproof
  20. a skipping rope
  21. a conductor
  22. an insulator
  23. plastic-coated cloth
  24. an umbrella cover
  25. True
  26. flexible
  27. an oven glove
  28. wood or plastic
  29. transparent
  30. False
  31. a conductor
  32. False
  33. an insulator
  34. graphite
  35. a conductor
  36. an insulator
  37. electrical conductor
  38. False
  39. a conductor
  40. iron

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