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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 554 · 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 an electrical conductor? (a) a hair band (b) a car windscreen (c) an umbrella cover (d) the core of a wire
  2. 2.🔍 Which is the odd one out? (a) clay pottery (b) cotton cloth (c) brass (d) rubber
  3. 3.🔍 Which is the odd one out? (a) graphite (b) rubber (c) copper (d) brass
  4. 4.True or false: a raincoat needs a flexible material. (a) False (b) True
  5. 5.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) aluminium (c) copper (d) iron
  6. 6.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.Which of these needs a waterproof material? (a) a switch contact (b) a spectacle lens (c) a raincoat (d) a car seat belt
  8. 8.🔍 Which is the odd one out? (a) plastic (b) iron (c) steel (d) aluminium
  9. 9.True or false: a skipping rope needs a flexible material. (a) False (b) True
  10. 10.True or false: a car seat belt needs a waterproof material. (a) False (b) True
  11. 11.🧱 Which property matters most for a skipping rope? (a) waterproof (b) electrical conductor (c) heat insulator (d) flexible
  12. 12.Which of these needs an electrical conductor? (a) a skipping rope (b) a plug pin (c) a spectacle lens (d) a hair band
  13. 13.🔍 Which is the odd one out? (a) clay pottery (b) brass (c) graphite (d) aluminium
  14. 14.🧱 Which property matters most for a plug pin? (a) waterproof (b) transparent (c) electrical conductor (d) heat insulator
  15. 15.🧱 Which material is best for the core of an electric wire? (a) glass (b) wood (c) copper (d) rubber
  16. 16.🧱 Which property matters most for a hair band? (a) heat insulator (b) waterproof (c) electrical conductor (d) flexible
  17. 17.🔍 Which is the odd one out? (a) dry wood (b) cotton cloth (c) glass (d) steel
  18. 18.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) transparent (c) flexible (d) waterproof
  19. 19.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  20. 20.Which of these needs a heat insulator? (a) a water tank (b) a switch contact (c) an oven glove (d) a plug pin
  21. 21.True or false: a plug pin needs an electrical conductor. (a) True (b) False
  22. 22.True or false: a spectacle lens needs a heat insulator. (a) True (b) False
  23. 23.🔍 Which is the odd one out? (a) clay pottery (b) cotton cloth (c) iron (d) glass
  24. 24.🔍 Which is the odd one out? (a) plastic (b) graphite (c) dry wood (d) clay pottery
  25. 25.🧱 Which material is best for a raincoat? (a) cotton wool (b) plastic-coated cloth (c) cardboard (d) paper
  26. 26.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  28. 28.True or false: a cooking pot handle needs a heat insulator. (a) True (b) False
  29. 29.Which of these needs a flexible material? (a) a yoga mat (b) the core of a wire (c) a tea flask lining (d) a plug pin
  30. 30.🧱 Which property matters most for a boat hull? (a) waterproof (b) heat insulator (c) flexible (d) transparent
  31. 31.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.True or false: a window pane needs a flexible material. (a) False (b) True
  33. 33.🧱 Which material is best for a window pane? (a) brick (b) steel (c) wood (d) glass
  34. 34.🧱 Which property matters most for a cooking pot handle? (a) electrical conductor (b) transparent (c) waterproof (d) heat insulator
  35. 35.🧱 Which property matters most for a raincoat? (a) flexible (b) waterproof (c) transparent (d) electrical conductor
  36. 36.True or false: a switch contact needs a transparent material. (a) True (b) False
  37. 37.Which of these needs a heat insulator? (a) a cooking pot handle (b) an umbrella cover (c) a yoga mat (d) a skipping rope
  38. 38.🔍 Which is the odd one out? (a) iron (b) steel (c) dry wood (d) aluminium
  39. 39.Which of these needs a waterproof material? (a) a switch contact (b) a tea flask lining (c) a water tank (d) a magnifier lens
  40. 40.True or false: a tea flask lining needs a heat insulator. (a) False (b) True

Answer key

  1. the core of a wire
  2. brass
  3. rubber
  4. False
  5. wood or plastic
  6. a conductor
  7. a raincoat
  8. plastic
  9. True
  10. False
  11. flexible
  12. a plug pin
  13. clay pottery
  14. electrical conductor
  15. copper
  16. flexible
  17. steel
  18. electrical conductor
  19. a conductor
  20. an oven glove
  21. True
  22. False
  23. iron
  24. graphite
  25. plastic-coated cloth
  26. a conductor
  27. an insulator
  28. True
  29. a yoga mat
  30. waterproof
  31. an insulator
  32. False
  33. glass
  34. heat insulator
  35. waterproof
  36. False
  37. a cooking pot handle
  38. dry wood
  39. a water tank
  40. True

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