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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 106 · 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.True or false: a switch contact needs a flexible material. (a) True (b) False
  2. 2.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.🔍 Which is the odd one out? (a) brass (b) dry wood (c) iron (d) graphite
  4. 4.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) glass (d) steel
  5. 5.True or false: a water tank needs a waterproof material. (a) False (b) True
  6. 6.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.True or false: a skipping rope needs a flexible material. (a) True (b) False
  10. 10.Which of these needs a heat insulator? (a) the core of a wire (b) a switch contact (c) a water tank (d) a tea flask lining
  11. 11.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.🔍 Which is the odd one out? (a) brass (b) cotton cloth (c) plastic (d) rubber
  13. 13.🧱 Which property matters most for a magnifier lens? (a) flexible (b) electrical conductor (c) transparent (d) waterproof
  14. 14.🧱 Which material is best for a cooking pot handle? (a) iron (b) copper (c) wood or plastic (d) aluminium
  15. 15.🧱 Which property matters most for a cooking pot handle? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  16. 16.🧱 Which property matters most for a water tank? (a) heat insulator (b) flexible (c) transparent (d) waterproof
  17. 17.🔍 Which is the odd one out? (a) graphite (b) steel (c) brass (d) plastic
  18. 18.Which of these needs a heat insulator? (a) a skipping rope (b) an oven glove (c) a raincoat (d) an umbrella cover
  19. 19.True or false: a hair band needs a flexible material. (a) True (b) False
  20. 20.True or false: a plug pin needs an electrical conductor. (a) True (b) False
  21. 21.🧱 Which property matters most for an oven glove? (a) waterproof (b) transparent (c) flexible (d) heat insulator
  22. 22.Which of these needs a flexible material? (a) the core of a wire (b) a yoga mat (c) a water tank (d) a cooking pot handle
  23. 23.🧱 Which property matters most for a plug pin? (a) heat insulator (b) flexible (c) electrical conductor (d) transparent
  24. 24.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  25. 25.🧱 Which property matters most for a hair band? (a) electrical conductor (b) transparent (c) flexible (d) waterproof
  26. 26.Which of these needs a transparent material? (a) a water tank (b) a plug pin (c) a magnifier lens (d) a tea flask lining
  27. 27.🧱 Which property matters most for a switch contact? (a) waterproof (b) flexible (c) transparent (d) electrical conductor
  28. 28.🔍 Which is the odd one out? (a) glass (b) dry wood (c) plastic (d) iron
  29. 29.🧱 Which property matters most for a window pane? (a) heat insulator (b) electrical conductor (c) flexible (d) transparent
  30. 30.🧱 Which property matters most for a raincoat? (a) electrical conductor (b) flexible (c) waterproof (d) heat insulator
  31. 31.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.Which of these needs a flexible material? (a) a hair band (b) a car windscreen (c) a raincoat (d) an umbrella cover
  33. 33.🔍 Which is the odd one out? (a) rubber (b) cotton cloth (c) aluminium (d) clay pottery
  34. 34.True or false: an oven glove needs an electrical conductor. (a) True (b) False
  35. 35.🧱 Which material is best for a window pane? (a) glass (b) steel (c) wood (d) brick
  36. 36.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) plastic-coated cloth (d) cardboard
  37. 37.Which of these needs a waterproof material? (a) a car seat belt (b) a yoga mat (c) a boat hull (d) a cooking pot handle
  38. 38.True or false: a roof sheet needs a waterproof material. (a) True (b) False
  39. 39.True or false: a roof sheet needs an electrical conductor. (a) False (b) True
  40. 40.Which of these needs a waterproof material? (a) a spectacle lens (b) a yoga mat (c) a water tank (d) a hair band

Answer key

  1. False
  2. a conductor
  3. dry wood
  4. steel
  5. True
  6. an insulator
  7. an insulator
  8. a conductor
  9. True
  10. a tea flask lining
  11. a conductor
  12. brass
  13. transparent
  14. wood or plastic
  15. heat insulator
  16. waterproof
  17. plastic
  18. an oven glove
  19. True
  20. True
  21. heat insulator
  22. a yoga mat
  23. electrical conductor
  24. an insulator
  25. flexible
  26. a magnifier lens
  27. electrical conductor
  28. iron
  29. transparent
  30. waterproof
  31. a conductor
  32. a hair band
  33. aluminium
  34. False
  35. glass
  36. plastic-coated cloth
  37. a boat hull
  38. True
  39. False
  40. a water tank

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