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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 255 · 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 water tank (b) a magnifier lens (c) a cooking pot handle (d) a plug pin
  2. 2.True or false: a magnifier lens needs a transparent material. (a) False (b) True
  3. 3.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.Which of these needs a waterproof material? (a) a hair band (b) a raincoat (c) a plug pin (d) a cooking pot handle
  5. 5.True or false: a yoga mat needs a waterproof material. (a) False (b) True
  6. 6.True or false: a raincoat needs a waterproof material. (a) False (b) True
  7. 7.True or false: a yoga mat needs a transparent material. (a) True (b) False
  8. 8.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) copper (d) wood
  9. 9.🧱 Which material is best for a raincoat? (a) cotton wool (b) plastic-coated cloth (c) cardboard (d) paper
  10. 10.True or false: a magnifier lens needs an electrical conductor. (a) False (b) True
  11. 11.True or false: a roof sheet needs a transparent material. (a) True (b) False
  12. 12.🧱 Which property matters most for a cooking pot handle? (a) heat insulator (b) transparent (c) waterproof (d) electrical conductor
  13. 13.🧱 Which material is best for a window pane? (a) brick (b) steel (c) glass (d) wood
  14. 14.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  15. 15.True or false: a car windscreen needs a transparent material. (a) True (b) False
  16. 16.🧱 Which property matters most for a plug pin? (a) waterproof (b) transparent (c) heat insulator (d) electrical conductor
  17. 17.True or false: a cooking pot handle needs a flexible material. (a) True (b) False
  18. 18.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  19. 19.🧱 Which property matters most for a car seat belt? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  20. 20.🔍 Which is the odd one out? (a) aluminium (b) dry wood (c) copper (d) graphite
  21. 21.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  22. 22.Which of these needs a waterproof material? (a) a water tank (b) the core of a wire (c) a car windscreen (d) a switch contact
  23. 23.Which of these needs a heat insulator? (a) a skipping rope (b) a magnifier lens (c) an oven glove (d) a yoga mat
  24. 24.🔍 Which is the odd one out? (a) clay pottery (b) dry wood (c) glass (d) copper
  25. 25.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) aluminium (c) copper (d) iron
  26. 26.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  27. 27.Which of these needs a flexible material? (a) a boat hull (b) a car seat belt (c) a switch contact (d) a car windscreen
  28. 28.🧱 Which property matters most for a spectacle lens? (a) electrical conductor (b) heat insulator (c) waterproof (d) transparent
  29. 29.🔍 Which is the odd one out? (a) plastic (b) dry wood (c) glass (d) brass
  30. 30.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.🧱 Which property matters most for a water tank? (a) flexible (b) waterproof (c) heat insulator (d) electrical conductor
  32. 32.True or false: an oven glove needs a heat insulator. (a) False (b) True
  33. 33.🔍 Which is the odd one out? (a) brass (b) clay pottery (c) copper (d) iron
  34. 34.🔍 Which is the odd one out? (a) brass (b) cotton cloth (c) graphite (d) copper
  35. 35.🧱 Which property matters most for an umbrella cover? (a) transparent (b) heat insulator (c) waterproof (d) electrical conductor
  36. 36.🔍 Which is the odd one out? (a) brass (b) graphite (c) steel (d) glass
  37. 37.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  38. 38.Which of these needs a heat insulator? (a) a car windscreen (b) a yoga mat (c) a tea flask lining (d) a plug pin
  39. 39.Which of these needs a flexible material? (a) a hair band (b) a boat hull (c) a spectacle lens (d) an umbrella cover
  40. 40.True or false: an umbrella cover needs a waterproof material. (a) True (b) False

Answer key

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

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