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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 657 · 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.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.Which of these needs an electrical conductor? (a) a boat hull (b) a window pane (c) a raincoat (d) the core of a wire
  3. 3.🔍 Which is the odd one out? (a) graphite (b) plastic (c) cotton cloth (d) dry wood
  4. 4.Which of these needs a heat insulator? (a) a tea flask lining (b) a hair band (c) a water tank (d) a car windscreen
  5. 5.🧱 Which property matters most for a car seat belt? (a) transparent (b) waterproof (c) flexible (d) heat insulator
  6. 6.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) plastic (d) steel
  7. 7.🧱 Which property matters most for a spectacle lens? (a) electrical conductor (b) heat insulator (c) transparent (d) waterproof
  8. 8.🧱 Which property matters most for a plug pin? (a) heat insulator (b) transparent (c) waterproof (d) electrical conductor
  9. 9.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  10. 10.🧱 Which property matters most for a car windscreen? (a) heat insulator (b) waterproof (c) flexible (d) transparent
  11. 11.🔍 Which is the odd one out? (a) plastic (b) glass (c) copper (d) cotton cloth
  12. 12.🧱 Which material is best for the core of an electric wire? (a) glass (b) copper (c) wood (d) rubber
  13. 13.🔍 Which is the odd one out? (a) clay pottery (b) brass (c) copper (d) aluminium
  14. 14.True or false: a boat hull needs a heat insulator. (a) False (b) True
  15. 15.🔍 Which is the odd one out? (a) brass (b) aluminium (c) plastic (d) steel
  16. 16.True or false: the core of a wire needs a waterproof material. (a) False (b) True
  17. 17.Which of these needs a waterproof material? (a) a boat hull (b) a hair band (c) a plug pin (d) a skipping rope
  18. 18.🧱 Which property matters most for a tea flask lining? (a) flexible (b) transparent (c) waterproof (d) heat insulator
  19. 19.🧱 Which property matters most for a raincoat? (a) waterproof (b) electrical conductor (c) flexible (d) heat insulator
  20. 20.🧱 Which material is best for a raincoat? (a) paper (b) plastic-coated cloth (c) cotton wool (d) cardboard
  21. 21.🧱 Which property matters most for a hair band? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  22. 22.🔍 Which is the odd one out? (a) plastic (b) aluminium (c) glass (d) dry wood
  23. 23.🧱 Which property matters most for a switch contact? (a) heat insulator (b) flexible (c) electrical conductor (d) waterproof
  24. 24.🧱 Which material is best for a cooking pot handle? (a) aluminium (b) copper (c) wood or plastic (d) iron
  25. 25.🔍 Which is the odd one out? (a) iron (b) dry wood (c) copper (d) graphite
  26. 26.Which of these needs a transparent material? (a) a cooking pot handle (b) a window pane (c) a plug pin (d) the core of a wire
  27. 27.True or false: a cooking pot handle needs a waterproof material. (a) True (b) False
  28. 28.True or false: a raincoat needs a flexible material. (a) True (b) False
  29. 29.🔍 Which is the odd one out? (a) graphite (b) rubber (c) brass (d) iron
  30. 30.Which of these needs a flexible material? (a) a car windscreen (b) a skipping rope (c) a tea flask lining (d) a magnifier lens
  31. 31.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🧱 Which property matters most for a skipping rope? (a) flexible (b) waterproof (c) electrical conductor (d) transparent
  33. 33.Which of these needs a flexible material? (a) a plug pin (b) a cooking pot handle (c) a hair band (d) a boat hull
  34. 34.Which of these needs a waterproof material? (a) a window pane (b) a yoga mat (c) a water tank (d) a switch contact
  35. 35.Which of these needs an electrical conductor? (a) a plug pin (b) a hair band (c) a window pane (d) a tea flask lining
  36. 36.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  37. 37.🧱 Which property matters most for a yoga mat? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  38. 38.Which of these needs a flexible material? (a) a yoga mat (b) an umbrella cover (c) a switch contact (d) a raincoat
  39. 39.🧱 Which property matters most for a roof sheet? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  40. 40.🧱 Which property matters most for a water tank? (a) transparent (b) flexible (c) electrical conductor (d) waterproof

Answer key

  1. a conductor
  2. the core of a wire
  3. graphite
  4. a tea flask lining
  5. flexible
  6. steel
  7. transparent
  8. electrical conductor
  9. True
  10. transparent
  11. copper
  12. copper
  13. clay pottery
  14. False
  15. plastic
  16. False
  17. a boat hull
  18. heat insulator
  19. waterproof
  20. plastic-coated cloth
  21. flexible
  22. aluminium
  23. electrical conductor
  24. wood or plastic
  25. dry wood
  26. a window pane
  27. False
  28. False
  29. rubber
  30. a skipping rope
  31. an insulator
  32. flexible
  33. a hair band
  34. a water tank
  35. a plug pin
  36. an insulator
  37. flexible
  38. a yoga mat
  39. waterproof
  40. waterproof

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