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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 197 · 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 property matters most for the core of a wire? (a) flexible (b) heat insulator (c) electrical conductor (d) transparent
  2. 2.True or false: a raincoat needs a waterproof material. (a) True (b) False
  3. 3.True or false: a switch contact needs a heat insulator. (a) False (b) True
  4. 4.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  5. 5.🧱 Which property matters most for a skipping rope? (a) transparent (b) waterproof (c) flexible (d) heat insulator
  6. 6.🔍 Which is the odd one out? (a) graphite (b) rubber (c) iron (d) steel
  7. 7.🔍 Which is the odd one out? (a) glass (b) rubber (c) graphite (d) clay pottery
  8. 8.🔍 Which is the odd one out? (a) copper (b) brass (c) steel (d) dry wood
  9. 9.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  10. 10.Which of these needs a transparent material? (a) a yoga mat (b) a water tank (c) a cooking pot handle (d) a window pane
  11. 11.Which of these needs an electrical conductor? (a) a raincoat (b) an umbrella cover (c) a yoga mat (d) a plug pin
  12. 12.Which of these needs a transparent material? (a) a raincoat (b) a boat hull (c) a cooking pot handle (d) a spectacle lens
  13. 13.Which of these needs a transparent material? (a) a boat hull (b) the core of a wire (c) a car seat belt (d) a magnifier lens
  14. 14.True or false: a car windscreen needs a heat insulator. (a) True (b) False
  15. 15.🧱 Which property matters most for a cooking pot handle? (a) transparent (b) heat insulator (c) waterproof (d) flexible
  16. 16.🧱 Which material is best for the bars inside concrete? (a) steel (b) glass (c) rubber (d) plastic
  17. 17.🧱 Which material is best for the core of an electric wire? (a) rubber (b) copper (c) glass (d) wood
  18. 18.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  19. 19.Which of these needs a waterproof material? (a) a window pane (b) a spectacle lens (c) a tea flask lining (d) a raincoat
  20. 20.🔍 Which is the odd one out? (a) glass (b) plastic (c) clay pottery (d) iron
  21. 21.Which of these needs a waterproof material? (a) an oven glove (b) a boat hull (c) a cooking pot handle (d) a hair band
  22. 22.🧱 Which property matters most for a roof sheet? (a) transparent (b) flexible (c) waterproof (d) electrical conductor
  23. 23.🧱 Which material is best for a raincoat? (a) cardboard (b) paper (c) plastic-coated cloth (d) cotton wool
  24. 24.🔍 Which is the odd one out? (a) steel (b) glass (c) dry wood (d) cotton cloth
  25. 25.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) heat insulator (c) waterproof (d) flexible
  26. 26.True or false: a skipping rope needs a flexible material. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) aluminium (b) steel (c) cotton cloth (d) copper
  28. 28.🔍 Which is the odd one out? (a) clay pottery (b) aluminium (c) graphite (d) brass
  29. 29.Which of these needs a heat insulator? (a) a water tank (b) a magnifier lens (c) a roof sheet (d) a cooking pot handle
  30. 30.🔍 Which is the odd one out? (a) glass (b) copper (c) iron (d) graphite
  31. 31.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  32. 32.Which of these needs a flexible material? (a) an umbrella cover (b) a car seat belt (c) a spectacle lens (d) a window pane
  33. 33.🔍 Which is the odd one out? (a) copper (b) cotton cloth (c) dry wood (d) clay pottery
  34. 34.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.True or false: the core of a wire needs a heat insulator. (a) False (b) True
  36. 36.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  37. 37.Which of these needs an electrical conductor? (a) an umbrella cover (b) a switch contact (c) a car windscreen (d) a boat hull
  38. 38.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.True or false: an umbrella cover needs an electrical conductor. (a) True (b) False
  40. 40.Which of these needs a flexible material? (a) a hair band (b) the core of a wire (c) an umbrella cover (d) a magnifier lens

Answer key

  1. electrical conductor
  2. True
  3. False
  4. an insulator
  5. flexible
  6. rubber
  7. graphite
  8. dry wood
  9. an insulator
  10. a window pane
  11. a plug pin
  12. a spectacle lens
  13. a magnifier lens
  14. False
  15. heat insulator
  16. steel
  17. copper
  18. a conductor
  19. a raincoat
  20. iron
  21. a boat hull
  22. waterproof
  23. plastic-coated cloth
  24. steel
  25. flexible
  26. True
  27. cotton cloth
  28. clay pottery
  29. a cooking pot handle
  30. glass
  31. a conductor
  32. a car seat belt
  33. copper
  34. an insulator
  35. False
  36. an insulator
  37. a switch contact
  38. a conductor
  39. False
  40. a hair band

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