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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 81 · 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 waterproof material? (a) an oven glove (b) a car seat belt (c) a roof sheet (d) a yoga mat
  2. 2.True or false: a skipping rope needs a flexible material. (a) False (b) True
  3. 3.🧱 Which property matters most for a plug pin? (a) flexible (b) electrical conductor (c) heat insulator (d) waterproof
  4. 4.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.True or false: an oven glove needs a heat insulator. (a) True (b) False
  6. 6.🧱 Which property matters most for a raincoat? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  7. 7.🔍 Which is the odd one out? (a) cotton cloth (b) dry wood (c) rubber (d) copper
  8. 8.True or false: a raincoat needs a heat insulator. (a) True (b) False
  9. 9.🔍 Which is the odd one out? (a) graphite (b) glass (c) dry wood (d) plastic
  10. 10.🧱 Which property matters most for a water tank? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  11. 11.Which of these needs a heat insulator? (a) a boat hull (b) a spectacle lens (c) an oven glove (d) a raincoat
  12. 12.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) heat insulator (c) flexible (d) waterproof
  13. 13.True or false: a spectacle lens needs a heat insulator. (a) True (b) False
  14. 14.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  15. 15.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  16. 16.🧱 Which property matters most for an umbrella cover? (a) flexible (b) electrical conductor (c) waterproof (d) transparent
  17. 17.🔍 Which is the odd one out? (a) copper (b) brass (c) plastic (d) aluminium
  18. 18.🧱 Which material is best for the bars inside concrete? (a) plastic (b) glass (c) steel (d) rubber
  19. 19.🧱 Which property matters most for a switch contact? (a) waterproof (b) transparent (c) electrical conductor (d) flexible
  20. 20.🔍 Which is the odd one out? (a) brass (b) copper (c) iron (d) cotton cloth
  21. 21.🧱 Which material is best for a raincoat? (a) cardboard (b) paper (c) plastic-coated cloth (d) cotton wool
  22. 22.🧱 Which material is best for a cooking pot handle? (a) copper (b) iron (c) wood or plastic (d) aluminium
  23. 23.True or false: a magnifier lens needs a flexible material. (a) False (b) True
  24. 24.🧱 Which property matters most for a hair band? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible
  25. 25.🔍 Which is the odd one out? (a) brass (b) aluminium (c) clay pottery (d) iron
  26. 26.🔍 Which is the odd one out? (a) aluminium (b) dry wood (c) iron (d) steel
  27. 27.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  28. 28.Which of these needs an electrical conductor? (a) a window pane (b) an oven glove (c) a hair band (d) a plug pin
  29. 29.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  30. 30.🔍 Which is the odd one out? (a) steel (b) copper (c) rubber (d) aluminium
  31. 31.True or false: an umbrella cover needs a waterproof material. (a) True (b) False
  32. 32.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  33. 33.True or false: a hair band needs a transparent material. (a) False (b) True
  34. 34.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) heat insulator (c) flexible (d) electrical conductor
  35. 35.🔍 Which is the odd one out? (a) iron (b) aluminium (c) glass (d) copper
  36. 36.🧱 Which property matters most for a yoga mat? (a) transparent (b) electrical conductor (c) flexible (d) waterproof
  37. 37.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.Which of these needs a waterproof material? (a) a cooking pot handle (b) a car windscreen (c) a tea flask lining (d) a water tank
  39. 39.True or false: a switch contact needs a waterproof material. (a) True (b) False
  40. 40.🧱 Which property matters most for a roof sheet? (a) transparent (b) heat insulator (c) electrical conductor (d) waterproof

Answer key

  1. a roof sheet
  2. True
  3. electrical conductor
  4. an insulator
  5. True
  6. waterproof
  7. copper
  8. False
  9. graphite
  10. waterproof
  11. an oven glove
  12. waterproof
  13. False
  14. a conductor
  15. a conductor
  16. waterproof
  17. plastic
  18. steel
  19. electrical conductor
  20. cotton cloth
  21. plastic-coated cloth
  22. wood or plastic
  23. False
  24. flexible
  25. clay pottery
  26. dry wood
  27. a conductor
  28. a plug pin
  29. an insulator
  30. rubber
  31. True
  32. True
  33. False
  34. heat insulator
  35. glass
  36. flexible
  37. an insulator
  38. a water tank
  39. False
  40. waterproof

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