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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 727 · 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) plastic-coated cloth (b) paper (c) cardboard (d) cotton wool
  2. 2.Which of these needs a flexible material? (a) a car seat belt (b) a raincoat (c) an umbrella cover (d) a roof sheet
  3. 3.Which of these needs a transparent material? (a) a roof sheet (b) a spectacle lens (c) a cooking pot handle (d) a car seat belt
  4. 4.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  5. 5.Which of these needs a transparent material? (a) a switch contact (b) a yoga mat (c) a magnifier lens (d) an oven glove
  6. 6.🧱 Which property matters most for a plug pin? (a) heat insulator (b) transparent (c) electrical conductor (d) flexible
  7. 7.True or false: a water tank needs a transparent material. (a) False (b) True
  8. 8.True or false: a skipping rope needs a flexible material. (a) True (b) False
  9. 9.🔍 Which is the odd one out? (a) glass (b) plastic (c) cotton cloth (d) aluminium
  10. 10.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) flexible (c) transparent (d) electrical conductor
  11. 11.🧱 Which material is best for the bars inside concrete? (a) rubber (b) plastic (c) steel (d) glass
  12. 12.🧱 Which property matters most for a raincoat? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
  13. 13.🔍 Which is the odd one out? (a) graphite (b) plastic (c) brass (d) iron
  14. 14.🧱 Which property matters most for a roof sheet? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  15. 15.True or false: a car seat belt needs an electrical conductor. (a) True (b) False
  16. 16.Which of these needs a flexible material? (a) a water tank (b) a switch contact (c) a skipping rope (d) a car windscreen
  17. 17.🧱 Which property matters most for an oven glove? (a) waterproof (b) flexible (c) electrical conductor (d) heat insulator
  18. 18.True or false: the core of a wire needs a flexible material. (a) False (b) True
  19. 19.Which of these needs a flexible material? (a) an umbrella cover (b) a car windscreen (c) a hair band (d) a tea flask lining
  20. 20.🔍 Which is the odd one out? (a) aluminium (b) rubber (c) brass (d) iron
  21. 21.🧱 Which material is best for the core of an electric wire? (a) rubber (b) wood (c) glass (d) copper
  22. 22.True or false: a spectacle lens needs a waterproof material. (a) True (b) False
  23. 23.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  24. 24.True or false: a yoga mat needs a flexible material. (a) True (b) False
  25. 25.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  26. 26.🔍 Which is the odd one out? (a) copper (b) dry wood (c) aluminium (d) iron
  27. 27.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.🔍 Which is the odd one out? (a) iron (b) graphite (c) steel (d) clay pottery
  30. 30.Which of these needs an electrical conductor? (a) a window pane (b) a yoga mat (c) a plug pin (d) a roof sheet
  31. 31.Which of these needs an electrical conductor? (a) an umbrella cover (b) a switch contact (c) a car windscreen (d) a skipping rope
  32. 32.Which of these needs an electrical conductor? (a) a roof sheet (b) a boat hull (c) the core of a wire (d) a spectacle lens
  33. 33.🧱 Which material is best for a window pane? (a) brick (b) steel (c) glass (d) wood
  34. 34.🧱 Which property matters most for a hair band? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  35. 35.True or false: a cooking pot handle needs a transparent material. (a) True (b) False
  36. 36.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  37. 37.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🔍 Which is the odd one out? (a) cotton cloth (b) plastic (c) dry wood (d) iron
  39. 39.🧱 Which property matters most for a cooking pot handle? (a) transparent (b) waterproof (c) flexible (d) heat insulator
  40. 40.Which of these needs a waterproof material? (a) the core of a wire (b) a switch contact (c) a yoga mat (d) a boat hull

Answer key

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

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