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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 589 · 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.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  2. 2.True or false: a roof sheet needs a waterproof material. (a) True (b) False
  3. 3.Which of these needs an electrical conductor? (a) a skipping rope (b) the core of a wire (c) a car windscreen (d) a magnifier lens
  4. 4.True or false: a plug pin needs a transparent material. (a) False (b) True
  5. 5.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.🔍 Which is the odd one out? (a) copper (b) plastic (c) brass (d) graphite
  7. 7.True or false: a car windscreen needs an electrical conductor. (a) False (b) True
  8. 8.🧱 Which material is best for a window pane? (a) glass (b) steel (c) brick (d) wood
  9. 9.True or false: a boat hull needs a transparent material. (a) True (b) False
  10. 10.🔍 Which is the odd one out? (a) dry wood (b) copper (c) steel (d) aluminium
  11. 11.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  12. 12.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  13. 13.Which of these needs a flexible material? (a) the core of a wire (b) a skipping rope (c) a switch contact (d) a car windscreen
  14. 14.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  15. 15.🧱 Which property matters most for a car seat belt? (a) flexible (b) transparent (c) electrical conductor (d) heat insulator
  16. 16.🧱 Which material is best for the bars inside concrete? (a) glass (b) rubber (c) steel (d) plastic
  17. 17.Which of these needs a heat insulator? (a) the core of a wire (b) a cooking pot handle (c) a hair band (d) a raincoat
  18. 18.True or false: the core of a wire needs an electrical conductor. (a) True (b) False
  19. 19.Which of these needs a heat insulator? (a) a spectacle lens (b) the core of a wire (c) a water tank (d) an oven glove
  20. 20.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.True or false: a boat hull needs a waterproof material. (a) False (b) True
  22. 22.True or false: an oven glove needs a waterproof material. (a) False (b) True
  23. 23.Which of these needs a waterproof material? (a) the core of a wire (b) a plug pin (c) a car seat belt (d) an umbrella cover
  24. 24.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) wood (d) copper
  25. 25.🔍 Which is the odd one out? (a) brass (b) cotton cloth (c) dry wood (d) glass
  26. 26.True or false: an oven glove needs a heat insulator. (a) True (b) False
  27. 27.🧱 Which property matters most for a hair band? (a) transparent (b) heat insulator (c) waterproof (d) flexible
  28. 28.🧱 Which property matters most for a magnifier lens? (a) heat insulator (b) transparent (c) waterproof (d) flexible
  29. 29.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) paper (c) cardboard (d) cotton wool
  30. 30.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  31. 31.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) transparent (c) flexible (d) electrical conductor
  32. 32.🔍 Which is the odd one out? (a) dry wood (b) iron (c) rubber (d) plastic
  33. 33.🧱 Which property matters most for a plug pin? (a) waterproof (b) transparent (c) electrical conductor (d) heat insulator
  34. 34.Which of these needs an electrical conductor? (a) a boat hull (b) a plug pin (c) a window pane (d) a car seat belt
  35. 35.🔍 Which is the odd one out? (a) plastic (b) aluminium (c) cotton cloth (d) rubber
  36. 36.🧱 Which property matters most for a roof sheet? (a) waterproof (b) transparent (c) flexible (d) electrical conductor
  37. 37.🔍 Which is the odd one out? (a) clay pottery (b) aluminium (c) steel (d) brass
  38. 38.🧱 Which property matters most for a switch contact? (a) transparent (b) waterproof (c) flexible (d) electrical conductor
  39. 39.True or false: a skipping rope needs a flexible material. (a) True (b) False
  40. 40.🔍 Which is the odd one out? (a) dry wood (b) steel (c) plastic (d) cotton cloth

Answer key

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

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