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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 327 · 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) cotton wool (c) cardboard (d) paper
  2. 2.Which of these needs a heat insulator? (a) an oven glove (b) an umbrella cover (c) a car windscreen (d) a yoga mat
  3. 3.True or false: a magnifier lens needs an electrical conductor. (a) True (b) False
  4. 4.Which of these needs a waterproof material? (a) a tea flask lining (b) a switch contact (c) a raincoat (d) an oven glove
  5. 5.🧱 Which property matters most for a spectacle lens? (a) flexible (b) heat insulator (c) waterproof (d) transparent
  6. 6.🧱 Which property matters most for a hair band? (a) electrical conductor (b) waterproof (c) transparent (d) flexible
  7. 7.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  8. 8.🧱 Which material is best for a window pane? (a) brick (b) wood (c) steel (d) glass
  9. 9.🔍 Which is the odd one out? (a) clay pottery (b) glass (c) plastic (d) graphite
  10. 10.Which of these needs an electrical conductor? (a) an umbrella cover (b) a car windscreen (c) a switch contact (d) a roof sheet
  11. 11.Which of these needs a flexible material? (a) an umbrella cover (b) a cooking pot handle (c) a water tank (d) a hair band
  12. 12.🧱 Which property matters most for a cooking pot handle? (a) waterproof (b) transparent (c) flexible (d) heat insulator
  13. 13.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.Which of these needs an electrical conductor? (a) a spectacle lens (b) a skipping rope (c) a hair band (d) the core of a wire
  15. 15.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  16. 16.🔍 Which is the odd one out? (a) brass (b) dry wood (c) graphite (d) aluminium
  17. 17.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  18. 18.🔍 Which is the odd one out? (a) glass (b) cotton cloth (c) rubber (d) aluminium
  19. 19.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.Which of these needs a waterproof material? (a) an umbrella cover (b) a cooking pot handle (c) a car seat belt (d) a switch contact
  21. 21.🧱 Which material is best for a cooking pot handle? (a) copper (b) iron (c) wood or plastic (d) aluminium
  22. 22.🧱 Which property matters most for a tea flask lining? (a) transparent (b) flexible (c) waterproof (d) heat insulator
  23. 23.True or false: a roof sheet needs a flexible material. (a) True (b) False
  24. 24.Which of these needs a transparent material? (a) a magnifier lens (b) a boat hull (c) an oven glove (d) a skipping rope
  25. 25.True or false: a yoga mat needs a heat insulator. (a) True (b) False
  26. 26.🧱 Which property matters most for a skipping rope? (a) heat insulator (b) waterproof (c) flexible (d) transparent
  27. 27.🔍 Which is the odd one out? (a) plastic (b) aluminium (c) graphite (d) iron
  28. 28.🧱 Which property matters most for a window pane? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  29. 29.Which of these needs a heat insulator? (a) an umbrella cover (b) a spectacle lens (c) a cooking pot handle (d) a boat hull
  30. 30.🧱 Which property matters most for a yoga mat? (a) flexible (b) transparent (c) heat insulator (d) waterproof
  31. 31.🧱 Which property matters most for a boat hull? (a) transparent (b) heat insulator (c) waterproof (d) flexible
  32. 32.True or false: a car windscreen needs a waterproof material. (a) True (b) False
  33. 33.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.🧱 Which property matters most for the core of a wire? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
  35. 35.Which of these needs a waterproof material? (a) a car seat belt (b) an oven glove (c) the core of a wire (d) a water tank
  36. 36.🧱 Which property matters most for a car windscreen? (a) heat insulator (b) transparent (c) electrical conductor (d) flexible
  37. 37.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  39. 39.🔍 Which is the odd one out? (a) clay pottery (b) rubber (c) dry wood (d) copper
  40. 40.True or false: a window pane needs a transparent material. (a) True (b) False

Answer key

  1. plastic-coated cloth
  2. an oven glove
  3. False
  4. a raincoat
  5. transparent
  6. flexible
  7. True
  8. glass
  9. graphite
  10. a switch contact
  11. a hair band
  12. heat insulator
  13. an insulator
  14. the core of a wire
  15. an insulator
  16. dry wood
  17. True
  18. aluminium
  19. an insulator
  20. an umbrella cover
  21. wood or plastic
  22. heat insulator
  23. False
  24. a magnifier lens
  25. False
  26. flexible
  27. plastic
  28. transparent
  29. a cooking pot handle
  30. flexible
  31. waterproof
  32. False
  33. an insulator
  34. electrical conductor
  35. a water tank
  36. transparent
  37. a conductor
  38. an insulator
  39. copper
  40. True

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