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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 143 · 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 roof sheet (b) a skipping rope (c) a raincoat (d) a spectacle lens
  2. 2.True or false: a magnifier lens needs a flexible material. (a) True (b) False
  3. 3.🔍 Which is the odd one out? (a) iron (b) cotton cloth (c) copper (d) graphite
  4. 4.🔍 Which is the odd one out? (a) copper (b) plastic (c) graphite (d) steel
  5. 5.🧱 Which property matters most for a magnifier lens? (a) flexible (b) heat insulator (c) waterproof (d) transparent
  6. 6.True or false: a boat hull needs a flexible material. (a) False (b) True
  7. 7.🧱 Which material is best for the bars inside concrete? (a) glass (b) steel (c) rubber (d) plastic
  8. 8.True or false: a skipping rope needs an electrical conductor. (a) True (b) False
  9. 9.🧱 Which property matters most for an umbrella cover? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  10. 10.True or false: a car seat belt needs a flexible material. (a) False (b) True
  11. 11.🧱 Which property matters most for a boat hull? (a) waterproof (b) flexible (c) transparent (d) heat insulator
  12. 12.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) cardboard (d) plastic-coated cloth
  13. 13.True or false: a roof sheet needs a waterproof material. (a) False (b) True
  14. 14.Which of these needs an electrical conductor? (a) a car windscreen (b) a switch contact (c) a water tank (d) an umbrella cover
  15. 15.🧱 Which material is best for a window pane? (a) wood (b) steel (c) brick (d) glass
  16. 16.True or false: a boat hull needs a waterproof material. (a) True (b) False
  17. 17.🧱 Which property matters most for a plug pin? (a) electrical conductor (b) transparent (c) flexible (d) heat insulator
  18. 18.Which of these needs a waterproof material? (a) a yoga mat (b) an oven glove (c) a raincoat (d) a magnifier lens
  19. 19.🔍 Which is the odd one out? (a) iron (b) plastic (c) rubber (d) dry wood
  20. 20.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.True or false: a yoga mat needs a flexible material. (a) False (b) True
  23. 23.🧱 Which property matters most for a switch contact? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  24. 24.🧱 Which property matters most for a spectacle lens? (a) electrical conductor (b) heat insulator (c) flexible (d) transparent
  25. 25.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) aluminium (c) iron (d) copper
  26. 26.🔍 Which is the odd one out? (a) rubber (b) aluminium (c) copper (d) iron
  27. 27.🧱 Which material is best for the core of an electric wire? (a) glass (b) rubber (c) copper (d) wood
  28. 28.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  30. 30.True or false: a car windscreen needs a flexible material. (a) True (b) False
  31. 31.Which of these needs a waterproof material? (a) a cooking pot handle (b) a skipping rope (c) an umbrella cover (d) the core of a wire
  32. 32.🧱 Which property matters most for a roof sheet? (a) waterproof (b) electrical conductor (c) heat insulator (d) flexible
  33. 33.🔍 Which is the odd one out? (a) cotton cloth (b) clay pottery (c) plastic (d) steel
  34. 34.Which of these needs an electrical conductor? (a) a cooking pot handle (b) a boat hull (c) the core of a wire (d) a hair band
  35. 35.True or false: a switch contact needs a waterproof material. (a) False (b) True
  36. 36.🔍 Which is the odd one out? (a) glass (b) plastic (c) copper (d) rubber
  37. 37.🧱 Which property matters most for a water tank? (a) waterproof (b) heat insulator (c) flexible (d) electrical conductor
  38. 38.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  39. 39.🧱 Which property matters most for a raincoat? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  40. 40.🧱 Which property matters most for a car windscreen? (a) waterproof (b) transparent (c) electrical conductor (d) flexible

Answer key

  1. a spectacle lens
  2. False
  3. cotton cloth
  4. plastic
  5. transparent
  6. False
  7. steel
  8. False
  9. waterproof
  10. True
  11. waterproof
  12. plastic-coated cloth
  13. True
  14. a switch contact
  15. glass
  16. True
  17. electrical conductor
  18. a raincoat
  19. iron
  20. a conductor
  21. a conductor
  22. True
  23. electrical conductor
  24. transparent
  25. wood or plastic
  26. rubber
  27. copper
  28. a conductor
  29. True
  30. False
  31. an umbrella cover
  32. waterproof
  33. steel
  34. the core of a wire
  35. False
  36. copper
  37. waterproof
  38. an insulator
  39. waterproof
  40. transparent

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