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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 324 · 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 an electrical conductor? (a) a switch contact (b) a hair band (c) a cooking pot handle (d) a boat hull
  2. 2.🔍 Which is the odd one out? (a) aluminium (b) copper (c) steel (d) cotton cloth
  3. 3.Which of these needs an electrical conductor? (a) a cooking pot handle (b) a tea flask lining (c) a window pane (d) the core of a wire
  4. 4.🧱 Which property matters most for a raincoat? (a) heat insulator (b) flexible (c) waterproof (d) transparent
  5. 5.🔍 Which is the odd one out? (a) glass (b) plastic (c) cotton cloth (d) graphite
  6. 6.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  7. 7.🧱 Which material is best for a cooking pot handle? (a) iron (b) copper (c) wood or plastic (d) aluminium
  8. 8.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  9. 9.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) cardboard (d) paper
  10. 10.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) heat insulator (c) electrical conductor (d) transparent
  11. 11.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) steel (d) glass
  12. 12.🔍 Which is the odd one out? (a) glass (b) dry wood (c) rubber (d) steel
  13. 13.True or false: a boat hull needs a flexible material. (a) False (b) True
  14. 14.True or false: a window pane needs a transparent material. (a) False (b) True
  15. 15.Which of these needs an electrical conductor? (a) a plug pin (b) a hair band (c) a raincoat (d) an umbrella cover
  16. 16.🔍 Which is the odd one out? (a) brass (b) rubber (c) iron (d) copper
  17. 17.Which of these needs a waterproof material? (a) a water tank (b) a spectacle lens (c) a skipping rope (d) a switch contact
  18. 18.🔍 Which is the odd one out? (a) rubber (b) plastic (c) brass (d) glass
  19. 19.🧱 Which property matters most for a switch contact? (a) waterproof (b) flexible (c) electrical conductor (d) heat insulator
  20. 20.True or false: an umbrella cover needs a transparent material. (a) False (b) True
  21. 21.True or false: a car seat belt needs a transparent material. (a) True (b) False
  22. 22.True or false: a yoga mat needs a heat insulator. (a) False (b) True
  23. 23.True or false: the core of a wire needs a heat insulator. (a) True (b) False
  24. 24.Which of these needs a flexible material? (a) an umbrella cover (b) a raincoat (c) a yoga mat (d) a magnifier lens
  25. 25.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  26. 26.🧱 Which property matters most for a spectacle lens? (a) flexible (b) heat insulator (c) waterproof (d) transparent
  27. 27.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.🧱 Which material is best for the core of an electric wire? (a) wood (b) copper (c) glass (d) rubber
  29. 29.Which of these needs a heat insulator? (a) an umbrella cover (b) a yoga mat (c) a cooking pot handle (d) a window pane
  30. 30.🧱 Which property matters most for a roof sheet? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  31. 31.🧱 Which property matters most for a skipping rope? (a) flexible (b) transparent (c) electrical conductor (d) waterproof
  32. 32.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  33. 33.True or false: a plug pin needs an electrical conductor. (a) True (b) False
  34. 34.🧱 Which property matters most for the core of a wire? (a) flexible (b) electrical conductor (c) heat insulator (d) transparent
  35. 35.Which of these needs a waterproof material? (a) a raincoat (b) a tea flask lining (c) a skipping rope (d) a cooking pot handle
  36. 36.True or false: a skipping rope needs a heat insulator. (a) False (b) True
  37. 37.Which of these needs a waterproof material? (a) a magnifier lens (b) a hair band (c) a window pane (d) a roof sheet
  38. 38.🧱 Which property matters most for a water tank? (a) flexible (b) waterproof (c) electrical conductor (d) transparent
  39. 39.True or false: an oven glove needs a flexible material. (a) True (b) False
  40. 40.True or false: a water tank needs a waterproof material. (a) False (b) True

Answer key

  1. a switch contact
  2. cotton cloth
  3. the core of a wire
  4. waterproof
  5. graphite
  6. a conductor
  7. wood or plastic
  8. an insulator
  9. plastic-coated cloth
  10. heat insulator
  11. steel
  12. steel
  13. False
  14. True
  15. a plug pin
  16. rubber
  17. a water tank
  18. brass
  19. electrical conductor
  20. False
  21. False
  22. False
  23. False
  24. a yoga mat
  25. an insulator
  26. transparent
  27. an insulator
  28. copper
  29. a cooking pot handle
  30. waterproof
  31. flexible
  32. a conductor
  33. True
  34. electrical conductor
  35. a raincoat
  36. False
  37. a roof sheet
  38. waterproof
  39. False
  40. True

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