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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 724 · 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 a transparent material? (a) a cooking pot handle (b) a skipping rope (c) a magnifier lens (d) a tea flask lining
  2. 2.🧱 Which material is best for a window pane? (a) steel (b) brick (c) glass (d) wood
  3. 3.🔍 Which is the odd one out? (a) graphite (b) iron (c) cotton cloth (d) steel
  4. 4.🔍 Which is the odd one out? (a) dry wood (b) cotton cloth (c) copper (d) glass
  5. 5.Which of these needs a flexible material? (a) a water tank (b) a tea flask lining (c) a window pane (d) a yoga mat
  6. 6.Which of these needs a transparent material? (a) a plug pin (b) a yoga mat (c) a cooking pot handle (d) a window pane
  7. 7.Which of these needs a transparent material? (a) a yoga mat (b) a boat hull (c) a spectacle lens (d) a cooking pot handle
  8. 8.True or false: a car windscreen needs a waterproof material. (a) False (b) True
  9. 9.🧱 Which property matters most for a cooking pot handle? (a) electrical conductor (b) heat insulator (c) flexible (d) waterproof
  10. 10.True or false: a raincoat needs a flexible material. (a) False (b) True
  11. 11.Which of these needs an electrical conductor? (a) a spectacle lens (b) an oven glove (c) a window pane (d) a switch contact
  12. 12.🧱 Which material is best for a raincoat? (a) paper (b) cardboard (c) cotton wool (d) plastic-coated cloth
  13. 13.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.🧱 Which property matters most for a plug pin? (a) heat insulator (b) waterproof (c) electrical conductor (d) flexible
  15. 15.🧱 Which material is best for the core of an electric wire? (a) glass (b) wood (c) rubber (d) copper
  16. 16.🧱 Which property matters most for a hair band? (a) heat insulator (b) flexible (c) waterproof (d) transparent
  17. 17.🧱 Which material is best for the bars inside concrete? (a) plastic (b) steel (c) glass (d) rubber
  18. 18.🧱 Which property matters most for a raincoat? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  19. 19.Which of these needs a flexible material? (a) a car seat belt (b) an oven glove (c) a roof sheet (d) a boat hull
  20. 20.🧱 Which property matters most for a roof sheet? (a) transparent (b) waterproof (c) electrical conductor (d) heat insulator
  21. 21.🧱 Which property matters most for a car seat belt? (a) waterproof (b) electrical conductor (c) flexible (d) heat insulator
  22. 22.True or false: a cooking pot handle needs a flexible material. (a) True (b) False
  23. 23.True or false: a spectacle lens needs an electrical conductor. (a) True (b) False
  24. 24.True or false: a boat hull needs a waterproof material. (a) True (b) False
  25. 25.Which of these needs a waterproof material? (a) a car seat belt (b) an oven glove (c) the core of a wire (d) a water tank
  26. 26.Which of these needs an electrical conductor? (a) a window pane (b) a car seat belt (c) a plug pin (d) a boat hull
  27. 27.True or false: a cooking pot handle needs a heat insulator. (a) False (b) True
  28. 28.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.🧱 Which property matters most for a water tank? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
  30. 30.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  31. 31.True or false: a plug pin needs a flexible material. (a) True (b) False
  32. 32.True or false: a magnifier lens needs a transparent material. (a) False (b) True
  33. 33.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.Which of these needs a flexible material? (a) an oven glove (b) a hair band (c) a tea flask lining (d) a water tank
  35. 35.True or false: a hair band needs a flexible material. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) glass (b) copper (c) aluminium (d) iron
  37. 37.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.🧱 Which property matters most for a window pane? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
  39. 39.🔍 Which is the odd one out? (a) brass (b) plastic (c) steel (d) graphite
  40. 40.True or false: an umbrella cover needs a waterproof material. (a) True (b) False

Answer key

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

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