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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 838 · 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 property matters most for the core of a wire? (a) waterproof (b) electrical conductor (c) flexible (d) heat insulator
  2. 2.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.True or false: a boat hull needs a transparent material. (a) True (b) False
  4. 4.Which of these needs a flexible material? (a) a hair band (b) a magnifier lens (c) an umbrella cover (d) a raincoat
  5. 5.🔍 Which is the odd one out? (a) clay pottery (b) graphite (c) copper (d) aluminium
  6. 6.True or false: a hair band needs a transparent material. (a) False (b) True
  7. 7.🧱 Which material is best for a cooking pot handle? (a) iron (b) copper (c) aluminium (d) wood or plastic
  8. 8.🧱 Which material is best for a raincoat? (a) cotton wool (b) paper (c) cardboard (d) plastic-coated cloth
  9. 9.True or false: a switch contact needs a waterproof material. (a) True (b) False
  10. 10.🧱 Which property matters most for a magnifier lens? (a) electrical conductor (b) waterproof (c) flexible (d) transparent
  11. 11.True or false: a car windscreen needs a transparent material. (a) False (b) True
  12. 12.Which of these needs a waterproof material? (a) a skipping rope (b) a plug pin (c) a magnifier lens (d) a water tank
  13. 13.Which of these needs a heat insulator? (a) a spectacle lens (b) a car windscreen (c) a roof sheet (d) an oven glove
  14. 14.🧱 Which material is best for the bars inside concrete? (a) steel (b) rubber (c) plastic (d) glass
  15. 15.🔍 Which is the odd one out? (a) clay pottery (b) aluminium (c) dry wood (d) glass
  16. 16.🔍 Which is the odd one out? (a) aluminium (b) brass (c) plastic (d) steel
  17. 17.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) electrical conductor (c) transparent (d) flexible
  18. 18.🧱 Which property matters most for a raincoat? (a) heat insulator (b) flexible (c) electrical conductor (d) waterproof
  19. 19.True or false: an umbrella cover needs a waterproof material. (a) False (b) True
  20. 20.🔍 Which is the odd one out? (a) iron (b) graphite (c) cotton cloth (d) aluminium
  21. 21.🧱 Which material is best for a window pane? (a) brick (b) wood (c) steel (d) glass
  22. 22.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  23. 23.🧱 Which material is best for the core of an electric wire? (a) copper (b) glass (c) rubber (d) wood
  24. 24.Which of these needs a waterproof material? (a) a cooking pot handle (b) a yoga mat (c) the core of a wire (d) an umbrella cover
  25. 25.🔍 Which is the odd one out? (a) graphite (b) steel (c) copper (d) glass
  26. 26.🧱 Which property matters most for a water tank? (a) heat insulator (b) flexible (c) electrical conductor (d) waterproof
  27. 27.🔍 Which is the odd one out? (a) steel (b) rubber (c) cotton cloth (d) plastic
  28. 28.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  29. 29.Which of these needs a heat insulator? (a) a skipping rope (b) a cooking pot handle (c) a magnifier lens (d) a car seat belt
  30. 30.Which of these needs a flexible material? (a) a raincoat (b) a car seat belt (c) a switch contact (d) a magnifier lens
  31. 31.Which of these needs a transparent material? (a) a raincoat (b) a hair band (c) an umbrella cover (d) a window pane
  32. 32.Which of these needs a waterproof material? (a) a car windscreen (b) a cooking pot handle (c) a car seat belt (d) a roof sheet
  33. 33.🧱 Is copper an electrical conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  35. 35.True or false: an oven glove needs a transparent material. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) aluminium (b) brass (c) graphite (d) rubber
  37. 37.🧱 Which property matters most for a skipping rope? (a) flexible (b) electrical conductor (c) transparent (d) waterproof
  38. 38.True or false: a boat hull needs a waterproof material. (a) True (b) False
  39. 39.Which of these needs a waterproof material? (a) a skipping rope (b) a raincoat (c) a window pane (d) a yoga mat
  40. 40.Which of these needs a flexible material? (a) a magnifier lens (b) an umbrella cover (c) a boat hull (d) a yoga mat

Answer key

  1. electrical conductor
  2. an insulator
  3. False
  4. a hair band
  5. clay pottery
  6. False
  7. wood or plastic
  8. plastic-coated cloth
  9. False
  10. transparent
  11. True
  12. a water tank
  13. an oven glove
  14. steel
  15. aluminium
  16. plastic
  17. waterproof
  18. waterproof
  19. True
  20. cotton cloth
  21. glass
  22. a conductor
  23. copper
  24. an umbrella cover
  25. glass
  26. waterproof
  27. steel
  28. an insulator
  29. a cooking pot handle
  30. a car seat belt
  31. a window pane
  32. a roof sheet
  33. a conductor
  34. a conductor
  35. False
  36. rubber
  37. flexible
  38. True
  39. a raincoat
  40. a yoga mat

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