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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 139 · 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 is the odd one out? (a) brass (b) aluminium (c) glass (d) graphite
  2. 2.Which of these needs a transparent material? (a) a water tank (b) the core of a wire (c) a magnifier lens (d) a yoga mat
  3. 3.True or false: a tea flask lining needs a flexible material. (a) False (b) True
  4. 4.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  5. 5.🧱 Which property matters most for a tea flask lining? (a) waterproof (b) transparent (c) heat insulator (d) flexible
  6. 6.True or false: an umbrella cover needs a transparent material. (a) False (b) True
  7. 7.True or false: a cooking pot handle needs a waterproof material. (a) True (b) False
  8. 8.True or false: a yoga mat needs a flexible material. (a) False (b) True
  9. 9.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.Which of these needs a waterproof material? (a) a switch contact (b) a tea flask lining (c) a magnifier lens (d) a roof sheet
  11. 11.Which of these needs an electrical conductor? (a) a roof sheet (b) a yoga mat (c) a switch contact (d) a skipping rope
  12. 12.🧱 Which property matters most for a roof sheet? (a) heat insulator (b) flexible (c) transparent (d) waterproof
  13. 13.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  14. 14.🧱 Which property matters most for a yoga mat? (a) heat insulator (b) flexible (c) electrical conductor (d) transparent
  15. 15.🧱 Which property matters most for a raincoat? (a) transparent (b) heat insulator (c) waterproof (d) flexible
  16. 16.🔍 Which is the odd one out? (a) glass (b) plastic (c) iron (d) cotton cloth
  17. 17.True or false: a raincoat needs an electrical conductor. (a) True (b) False
  18. 18.Which of these needs a heat insulator? (a) a cooking pot handle (b) a car windscreen (c) a spectacle lens (d) the core of a wire
  19. 19.True or false: an oven glove needs a heat insulator. (a) True (b) False
  20. 20.🧱 Which property matters most for a spectacle lens? (a) heat insulator (b) flexible (c) transparent (d) electrical conductor
  21. 21.🧱 Which property matters most for a skipping rope? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  22. 22.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  24. 24.Which of these needs a transparent material? (a) an umbrella cover (b) a plug pin (c) a window pane (d) a yoga mat
  25. 25.True or false: an umbrella cover needs a flexible material. (a) True (b) False
  26. 26.True or false: a switch contact needs an electrical conductor. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) iron (b) aluminium (c) dry wood (d) brass
  28. 28.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) copper (c) aluminium (d) iron
  29. 29.🧱 Which material is best for the core of an electric wire? (a) copper (b) rubber (c) glass (d) wood
  30. 30.Which of these needs a transparent material? (a) the core of a wire (b) a car windscreen (c) a roof sheet (d) a switch contact
  31. 31.Which of these needs a waterproof material? (a) the core of a wire (b) a switch contact (c) an oven glove (d) a water tank
  32. 32.🔍 Which is the odd one out? (a) glass (b) dry wood (c) cotton cloth (d) brass
  33. 33.True or false: the core of a wire needs a waterproof material. (a) False (b) True
  34. 34.Which of these needs a waterproof material? (a) a yoga mat (b) a raincoat (c) a tea flask lining (d) a skipping rope
  35. 35.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) cardboard (d) plastic-coated cloth
  36. 36.🧱 Which material is best for a window pane? (a) glass (b) steel (c) wood (d) brick
  37. 37.🔍 Which is the odd one out? (a) brass (b) copper (c) plastic (d) steel
  38. 38.🔍 Which is the odd one out? (a) clay pottery (b) rubber (c) cotton cloth (d) steel
  39. 39.🔍 Which is the odd one out? (a) rubber (b) iron (c) copper (d) steel
  40. 40.True or false: a skipping rope needs an electrical conductor. (a) True (b) False

Answer key

  1. glass
  2. a magnifier lens
  3. False
  4. an insulator
  5. heat insulator
  6. False
  7. False
  8. True
  9. a conductor
  10. a roof sheet
  11. a switch contact
  12. waterproof
  13. an insulator
  14. flexible
  15. waterproof
  16. iron
  17. False
  18. a cooking pot handle
  19. True
  20. transparent
  21. flexible
  22. a conductor
  23. an insulator
  24. a window pane
  25. False
  26. True
  27. dry wood
  28. wood or plastic
  29. copper
  30. a car windscreen
  31. a water tank
  32. brass
  33. False
  34. a raincoat
  35. plastic-coated cloth
  36. glass
  37. plastic
  38. steel
  39. rubber
  40. False

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