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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 90 · 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 material is best for a raincoat? (a) paper (b) cotton wool (c) cardboard (d) plastic-coated cloth
  2. 2.Which of these needs a waterproof material? (a) a yoga mat (b) a spectacle lens (c) a boat hull (d) a car seat belt
  3. 3.Which of these needs a flexible material? (a) a raincoat (b) a car seat belt (c) a magnifier lens (d) a window pane
  4. 4.🧱 Which property matters most for a switch contact? (a) heat insulator (b) waterproof (c) electrical conductor (d) flexible
  5. 5.Which of these needs a transparent material? (a) a car seat belt (b) a spectacle lens (c) a roof sheet (d) an oven glove
  6. 6.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  7. 7.Which of these needs an electrical conductor? (a) a car seat belt (b) a switch contact (c) an oven glove (d) a window pane
  8. 8.🔍 Which is the odd one out? (a) plastic (b) rubber (c) cotton cloth (d) copper
  9. 9.True or false: the core of a wire needs a heat insulator. (a) False (b) True
  10. 10.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) transparent (c) waterproof (d) flexible
  11. 11.Which of these needs an electrical conductor? (a) a boat hull (b) the core of a wire (c) a hair band (d) a roof sheet
  12. 12.True or false: a hair band needs a flexible material. (a) False (b) True
  13. 13.Which of these needs a flexible material? (a) a raincoat (b) a yoga mat (c) an oven glove (d) a tea flask lining
  14. 14.🔍 Which is the odd one out? (a) plastic (b) iron (c) cotton cloth (d) dry wood
  15. 15.🧱 Which property matters most for an oven glove? (a) flexible (b) transparent (c) heat insulator (d) waterproof
  16. 16.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  17. 17.🧱 Which property matters most for a skipping rope? (a) transparent (b) flexible (c) heat insulator (d) waterproof
  18. 18.🔍 Which is the odd one out? (a) aluminium (b) iron (c) copper (d) glass
  19. 19.Which of these needs a transparent material? (a) a hair band (b) a cooking pot handle (c) a raincoat (d) a magnifier lens
  20. 20.🧱 Which material is best for the core of an electric wire? (a) copper (b) rubber (c) wood (d) glass
  21. 21.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) steel (d) plastic
  22. 22.True or false: the core of a wire needs a waterproof material. (a) True (b) False
  23. 23.🔍 Which is the odd one out? (a) graphite (b) cotton cloth (c) iron (d) copper
  24. 24.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.🧱 Which material is best for a cooking pot handle? (a) copper (b) aluminium (c) iron (d) wood or plastic
  27. 27.🧱 Which property matters most for a cooking pot handle? (a) electrical conductor (b) flexible (c) transparent (d) heat insulator
  28. 28.True or false: a spectacle lens needs a flexible material. (a) False (b) True
  29. 29.🧱 Which material is best for a window pane? (a) wood (b) brick (c) steel (d) glass
  30. 30.True or false: a water tank needs a flexible material. (a) False (b) True
  31. 31.🧱 Which property matters most for the core of a wire? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  32. 32.Which of these needs a waterproof material? (a) a spectacle lens (b) a skipping rope (c) a switch contact (d) an umbrella cover
  33. 33.🔍 Which is the odd one out? (a) aluminium (b) clay pottery (c) iron (d) steel
  34. 34.🔍 Which is the odd one out? (a) plastic (b) aluminium (c) dry wood (d) cotton cloth
  35. 35.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  36. 36.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  37. 37.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  38. 38.🧱 Which property matters most for a hair band? (a) heat insulator (b) transparent (c) waterproof (d) flexible
  39. 39.Which of these needs a flexible material? (a) a skipping rope (b) a window pane (c) an oven glove (d) a switch contact
  40. 40.True or false: a skipping rope needs a transparent material. (a) False (b) True

Answer key

  1. plastic-coated cloth
  2. a boat hull
  3. a car seat belt
  4. electrical conductor
  5. a spectacle lens
  6. a conductor
  7. a switch contact
  8. copper
  9. False
  10. waterproof
  11. the core of a wire
  12. True
  13. a yoga mat
  14. iron
  15. heat insulator
  16. a conductor
  17. flexible
  18. glass
  19. a magnifier lens
  20. copper
  21. steel
  22. False
  23. cotton cloth
  24. a conductor
  25. an insulator
  26. wood or plastic
  27. heat insulator
  28. False
  29. glass
  30. False
  31. electrical conductor
  32. an umbrella cover
  33. clay pottery
  34. aluminium
  35. a conductor
  36. an insulator
  37. a conductor
  38. flexible
  39. a skipping rope
  40. False

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