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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 434 · 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 transparent material? (a) a boat hull (b) a cooking pot handle (c) the core of a wire (d) a magnifier lens
  2. 2.🧱 Which material is best for a raincoat? (a) cotton wool (b) paper (c) plastic-coated cloth (d) cardboard
  3. 3.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  4. 4.Which of these needs a waterproof material? (a) an umbrella cover (b) a plug pin (c) a spectacle lens (d) a yoga mat
  5. 5.True or false: a window pane needs a flexible material. (a) False (b) True
  6. 6.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) copper (d) wood
  7. 7.🧱 Which property matters most for a water tank? (a) electrical conductor (b) transparent (c) heat insulator (d) waterproof
  8. 8.🔍 Which is the odd one out? (a) rubber (b) graphite (c) dry wood (d) glass
  9. 9.Which of these needs an electrical conductor? (a) a car seat belt (b) a window pane (c) a skipping rope (d) a switch contact
  10. 10.True or false: a magnifier lens needs a transparent material. (a) False (b) True
  11. 11.True or false: a skipping rope needs a flexible material. (a) True (b) False
  12. 12.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.🔍 Which is the odd one out? (a) aluminium (b) brass (c) steel (d) glass
  14. 14.Which of these needs a flexible material? (a) a boat hull (b) a magnifier lens (c) a hair band (d) a window pane
  15. 15.🔍 Which is the odd one out? (a) glass (b) copper (c) plastic (d) dry wood
  16. 16.🧱 Which property matters most for a boat hull? (a) electrical conductor (b) flexible (c) heat insulator (d) waterproof
  17. 17.🧱 Which property matters most for a hair band? (a) flexible (b) electrical conductor (c) heat insulator (d) waterproof
  18. 18.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  19. 19.🧱 Which property matters most for a car seat belt? (a) waterproof (b) flexible (c) electrical conductor (d) heat insulator
  20. 20.🧱 Which property matters most for a plug pin? (a) waterproof (b) flexible (c) electrical conductor (d) transparent
  21. 21.Which of these needs a heat insulator? (a) a water tank (b) an umbrella cover (c) a cooking pot handle (d) a raincoat
  22. 22.🔍 Which is the odd one out? (a) graphite (b) aluminium (c) brass (d) rubber
  23. 23.True or false: a car seat belt needs a heat insulator. (a) False (b) True
  24. 24.True or false: a spectacle lens needs a heat insulator. (a) True (b) False
  25. 25.True or false: a yoga mat needs a flexible material. (a) True (b) False
  26. 26.Which of these needs a flexible material? (a) a raincoat (b) a tea flask lining (c) a water tank (d) a car seat belt
  27. 27.True or false: a cooking pot handle needs a heat insulator. (a) False (b) True
  28. 28.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  29. 29.True or false: an umbrella cover needs a heat insulator. (a) True (b) False
  30. 30.🧱 Which property matters most for the core of a wire? (a) waterproof (b) flexible (c) heat insulator (d) electrical conductor
  31. 31.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🔍 Which is the odd one out? (a) clay pottery (b) steel (c) graphite (d) brass
  33. 33.🧱 Which property matters most for an umbrella cover? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
  34. 34.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) glass (d) steel
  35. 35.🧱 Which property matters most for a raincoat? (a) flexible (b) electrical conductor (c) waterproof (d) heat insulator
  36. 36.Which of these needs an electrical conductor? (a) a car windscreen (b) a water tank (c) a yoga mat (d) a plug pin
  37. 37.🔍 Which is the odd one out? (a) glass (b) cotton cloth (c) rubber (d) steel
  38. 38.🔍 Which is the odd one out? (a) plastic (b) aluminium (c) brass (d) copper
  39. 39.🧱 Which property matters most for a yoga mat? (a) transparent (b) waterproof (c) electrical conductor (d) flexible
  40. 40.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor

Answer key

  1. a magnifier lens
  2. plastic-coated cloth
  3. a conductor
  4. an umbrella cover
  5. False
  6. copper
  7. waterproof
  8. graphite
  9. a switch contact
  10. True
  11. True
  12. an insulator
  13. glass
  14. a hair band
  15. copper
  16. waterproof
  17. flexible
  18. an insulator
  19. flexible
  20. electrical conductor
  21. a cooking pot handle
  22. rubber
  23. False
  24. False
  25. True
  26. a car seat belt
  27. True
  28. True
  29. False
  30. electrical conductor
  31. an insulator
  32. clay pottery
  33. waterproof
  34. steel
  35. waterproof
  36. a plug pin
  37. steel
  38. plastic
  39. flexible
  40. an insulator

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