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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 665 · 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 plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  2. 2.Which of these needs a flexible material? (a) a window pane (b) a raincoat (c) a spectacle lens (d) a yoga mat
  3. 3.🧱 Which property matters most for a cooking pot handle? (a) flexible (b) waterproof (c) heat insulator (d) electrical conductor
  4. 4.Which of these needs a heat insulator? (a) a boat hull (b) a cooking pot handle (c) a skipping rope (d) an umbrella cover
  5. 5.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  6. 6.True or false: the core of a wire needs an electrical conductor. (a) True (b) False
  7. 7.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.True or false: a water tank needs a waterproof material. (a) False (b) True
  9. 9.🔍 Which is the odd one out? (a) iron (b) copper (c) steel (d) rubber
  10. 10.🧱 Which property matters most for a yoga mat? (a) flexible (b) transparent (c) waterproof (d) heat insulator
  11. 11.🧱 Which property matters most for a plug pin? (a) flexible (b) electrical conductor (c) transparent (d) waterproof
  12. 12.Which of these needs a flexible material? (a) a plug pin (b) a hair band (c) the core of a wire (d) a window pane
  13. 13.Which of these needs a waterproof material? (a) a water tank (b) a tea flask lining (c) an oven glove (d) a hair band
  14. 14.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  15. 15.🧱 Which property matters most for a car windscreen? (a) flexible (b) electrical conductor (c) transparent (d) waterproof
  16. 16.True or false: an umbrella cover needs a waterproof material. (a) True (b) False
  17. 17.🔍 Which is the odd one out? (a) glass (b) plastic (c) iron (d) clay pottery
  18. 18.True or false: a magnifier lens needs an electrical conductor. (a) True (b) False
  19. 19.🧱 Which property matters most for a switch contact? (a) electrical conductor (b) heat insulator (c) flexible (d) waterproof
  20. 20.🔍 Which is the odd one out? (a) rubber (b) clay pottery (c) cotton cloth (d) graphite
  21. 21.Which of these needs a transparent material? (a) a boat hull (b) a window pane (c) a yoga mat (d) a hair band
  22. 22.Which of these needs an electrical conductor? (a) a car seat belt (b) a yoga mat (c) a cooking pot handle (d) the core of a wire
  23. 23.🔍 Which is the odd one out? (a) copper (b) glass (c) graphite (d) brass
  24. 24.🧱 Which property matters most for a tea flask lining? (a) waterproof (b) transparent (c) heat insulator (d) electrical conductor
  25. 25.🔍 Which is the odd one out? (a) aluminium (b) rubber (c) glass (d) dry wood
  26. 26.Which of these needs a heat insulator? (a) a roof sheet (b) a skipping rope (c) a hair band (d) a tea flask lining
  27. 27.🧱 Which material is best for the core of an electric wire? (a) wood (b) rubber (c) glass (d) copper
  28. 28.🧱 Which property matters most for a roof sheet? (a) transparent (b) heat insulator (c) waterproof (d) electrical conductor
  29. 29.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.🧱 Which material is best for a window pane? (a) brick (b) glass (c) steel (d) wood
  31. 31.🧱 Which property matters most for an oven glove? (a) heat insulator (b) transparent (c) electrical conductor (d) flexible
  32. 32.True or false: a roof sheet needs a heat insulator. (a) True (b) False
  33. 33.Which of these needs a waterproof material? (a) a cooking pot handle (b) a tea flask lining (c) a roof sheet (d) the core of a wire
  34. 34.Which of these needs a transparent material? (a) a magnifier lens (b) a skipping rope (c) a water tank (d) a cooking pot handle
  35. 35.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  36. 36.Which of these needs a transparent material? (a) a spectacle lens (b) a boat hull (c) an umbrella cover (d) a switch contact
  37. 37.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) paper (c) cotton wool (d) cardboard
  38. 38.Which of these needs a transparent material? (a) a tea flask lining (b) an oven glove (c) a water tank (d) a car windscreen
  39. 39.🔍 Which is the odd one out? (a) iron (b) copper (c) cotton cloth (d) graphite
  40. 40.🧱 Which property matters most for a window pane? (a) waterproof (b) flexible (c) electrical conductor (d) transparent

Answer key

  1. an insulator
  2. a yoga mat
  3. heat insulator
  4. a cooking pot handle
  5. an insulator
  6. True
  7. an insulator
  8. True
  9. rubber
  10. flexible
  11. electrical conductor
  12. a hair band
  13. a water tank
  14. an insulator
  15. transparent
  16. True
  17. iron
  18. False
  19. electrical conductor
  20. graphite
  21. a window pane
  22. the core of a wire
  23. glass
  24. heat insulator
  25. aluminium
  26. a tea flask lining
  27. copper
  28. waterproof
  29. a conductor
  30. glass
  31. heat insulator
  32. False
  33. a roof sheet
  34. a magnifier lens
  35. True
  36. a spectacle lens
  37. plastic-coated cloth
  38. a car windscreen
  39. cotton cloth
  40. transparent

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