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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 535 · 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) cotton wool (b) paper (c) plastic-coated cloth (d) cardboard
  2. 2.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.Which of these needs a flexible material? (a) a car windscreen (b) the core of a wire (c) an umbrella cover (d) a skipping rope
  4. 4.🔍 Which is the odd one out? (a) plastic (b) graphite (c) aluminium (d) steel
  5. 5.True or false: an umbrella cover needs a heat insulator. (a) True (b) False
  6. 6.True or false: an oven glove needs a heat insulator. (a) False (b) True
  7. 7.🧱 Which property matters most for an umbrella cover? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
  8. 8.🔍 Which is the odd one out? (a) graphite (b) rubber (c) dry wood (d) clay pottery
  9. 9.True or false: a yoga mat needs a flexible material. (a) True (b) False
  10. 10.Which of these needs a flexible material? (a) a car windscreen (b) a cooking pot handle (c) a switch contact (d) a hair band
  11. 11.🧱 Which material is best for a window pane? (a) wood (b) steel (c) brick (d) glass
  12. 12.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.🔍 Which is the odd one out? (a) iron (b) glass (c) copper (d) steel
  14. 14.Which of these needs a heat insulator? (a) a car windscreen (b) a car seat belt (c) a cooking pot handle (d) a hair band
  15. 15.Which of these needs a transparent material? (a) a plug pin (b) a car seat belt (c) a cooking pot handle (d) a window pane
  16. 16.🔍 Which is the odd one out? (a) glass (b) rubber (c) cotton cloth (d) steel
  17. 17.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  18. 18.Which of these needs an electrical conductor? (a) a car windscreen (b) a roof sheet (c) a plug pin (d) a car seat belt
  19. 19.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.Which of these needs a waterproof material? (a) a roof sheet (b) a skipping rope (c) an oven glove (d) a spectacle lens
  21. 21.True or false: a raincoat needs a transparent material. (a) True (b) False
  22. 22.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  23. 23.🧱 Which material is best for a cooking pot handle? (a) copper (b) iron (c) wood or plastic (d) aluminium
  24. 24.🧱 Which material is best for the core of an electric wire? (a) glass (b) rubber (c) wood (d) copper
  25. 25.🧱 Which property matters most for the core of a wire? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
  26. 26.🧱 Which property matters most for a car seat belt? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  27. 27.🧱 Which property matters most for a hair band? (a) transparent (b) flexible (c) electrical conductor (d) waterproof
  28. 28.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.Which of these needs a waterproof material? (a) a car windscreen (b) a raincoat (c) a hair band (d) a skipping rope
  30. 30.Which of these needs an electrical conductor? (a) an oven glove (b) the core of a wire (c) a hair band (d) a cooking pot handle
  31. 31.True or false: a switch contact needs an electrical conductor. (a) True (b) False
  32. 32.🔍 Which is the odd one out? (a) steel (b) aluminium (c) iron (d) dry wood
  33. 33.🧱 Which material is best for the bars inside concrete? (a) plastic (b) steel (c) glass (d) rubber
  34. 34.Which of these needs a heat insulator? (a) an oven glove (b) a yoga mat (c) a car windscreen (d) a boat hull
  35. 35.True or false: a plug pin needs a heat insulator. (a) False (b) True
  36. 36.🔍 Which is the odd one out? (a) iron (b) copper (c) clay pottery (d) steel
  37. 37.🧱 Which property matters most for a switch contact? (a) waterproof (b) heat insulator (c) flexible (d) electrical conductor
  38. 38.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  39. 39.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  40. 40.🧱 Which property matters most for a raincoat? (a) electrical conductor (b) waterproof (c) heat insulator (d) flexible

Answer key

  1. plastic-coated cloth
  2. a conductor
  3. a skipping rope
  4. plastic
  5. False
  6. True
  7. waterproof
  8. graphite
  9. True
  10. a hair band
  11. glass
  12. a conductor
  13. glass
  14. a cooking pot handle
  15. a window pane
  16. steel
  17. a conductor
  18. a plug pin
  19. an insulator
  20. a roof sheet
  21. False
  22. a conductor
  23. wood or plastic
  24. copper
  25. electrical conductor
  26. flexible
  27. flexible
  28. an insulator
  29. a raincoat
  30. the core of a wire
  31. True
  32. dry wood
  33. steel
  34. an oven glove
  35. False
  36. clay pottery
  37. electrical conductor
  38. an insulator
  39. an insulator
  40. waterproof

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