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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 253 · 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 heat insulator? (a) an oven glove (b) a car windscreen (c) a water tank (d) a yoga mat
  2. 2.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.🧱 Which material is best for a cooking pot handle? (a) wood or plastic (b) aluminium (c) iron (d) copper
  4. 4.True or false: a magnifier lens needs a transparent material. (a) False (b) True
  5. 5.Which of these needs a transparent material? (a) an umbrella cover (b) a skipping rope (c) a switch contact (d) a car windscreen
  6. 6.🔍 Which is the odd one out? (a) graphite (b) iron (c) aluminium (d) cotton cloth
  7. 7.🔍 Which is the odd one out? (a) glass (b) iron (c) steel (d) copper
  8. 8.🧱 Which material is best for the core of an electric wire? (a) wood (b) rubber (c) copper (d) glass
  9. 9.Which of these needs a heat insulator? (a) the core of a wire (b) a magnifier lens (c) a boat hull (d) a cooking pot handle
  10. 10.🧱 Is aluminium an electrical conductor or an insulator? (a) an insulator (b) a conductor
  11. 11.Which of these needs a heat insulator? (a) a roof sheet (b) a magnifier lens (c) a raincoat (d) a tea flask lining
  12. 12.Which of these needs a waterproof material? (a) a car seat belt (b) a spectacle lens (c) a roof sheet (d) a switch contact
  13. 13.True or false: a car seat belt needs a flexible material. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) glass (b) rubber (c) plastic (d) graphite
  15. 15.🔍 Which is the odd one out? (a) copper (b) steel (c) plastic (d) aluminium
  16. 16.Which of these needs a waterproof material? (a) a hair band (b) a switch contact (c) a car seat belt (d) a boat hull
  17. 17.🧱 Which property matters most for a skipping rope? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
  18. 18.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cotton wool (c) paper (d) cardboard
  19. 19.🧱 Which material is best for a window pane? (a) glass (b) brick (c) steel (d) wood
  20. 20.🧱 Which property matters most for a boat hull? (a) transparent (b) waterproof (c) heat insulator (d) flexible
  21. 21.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🔍 Which is the odd one out? (a) iron (b) aluminium (c) clay pottery (d) graphite
  23. 23.🧱 Which property matters most for a spectacle lens? (a) waterproof (b) flexible (c) electrical conductor (d) transparent
  24. 24.🧱 Which property matters most for a switch contact? (a) flexible (b) waterproof (c) heat insulator (d) electrical conductor
  25. 25.True or false: a car windscreen needs an electrical conductor. (a) True (b) False
  26. 26.🔍 Which is the odd one out? (a) plastic (b) copper (c) clay pottery (d) dry wood
  27. 27.🔍 Which is the odd one out? (a) steel (b) rubber (c) copper (d) iron
  28. 28.True or false: a car windscreen needs a waterproof material. (a) False (b) True
  29. 29.True or false: a roof sheet needs a waterproof material. (a) False (b) True
  30. 30.True or false: a plug pin needs a flexible material. (a) True (b) False
  31. 31.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  32. 32.True or false: a car seat belt needs a heat insulator. (a) True (b) False
  33. 33.Which of these needs a flexible material? (a) a yoga mat (b) a water tank (c) a spectacle lens (d) a car windscreen
  34. 34.🧱 Which material is best for the bars inside concrete? (a) rubber (b) plastic (c) steel (d) glass
  35. 35.🔍 Which is the odd one out? (a) clay pottery (b) plastic (c) iron (d) dry wood
  36. 36.True or false: the core of a wire needs a heat insulator. (a) False (b) True
  37. 37.Which of these needs a waterproof material? (a) a tea flask lining (b) a raincoat (c) a plug pin (d) a car windscreen
  38. 38.🧱 Which property matters most for a roof sheet? (a) transparent (b) heat insulator (c) waterproof (d) flexible
  39. 39.🧱 Which property matters most for a tea flask lining? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  40. 40.True or false: a magnifier lens needs an electrical conductor. (a) True (b) False

Answer key

  1. an oven glove
  2. an insulator
  3. wood or plastic
  4. True
  5. a car windscreen
  6. cotton cloth
  7. glass
  8. copper
  9. a cooking pot handle
  10. a conductor
  11. a tea flask lining
  12. a roof sheet
  13. True
  14. graphite
  15. plastic
  16. a boat hull
  17. flexible
  18. plastic-coated cloth
  19. glass
  20. waterproof
  21. a conductor
  22. clay pottery
  23. transparent
  24. electrical conductor
  25. False
  26. copper
  27. rubber
  28. False
  29. True
  30. False
  31. an insulator
  32. False
  33. a yoga mat
  34. steel
  35. iron
  36. False
  37. a raincoat
  38. waterproof
  39. heat insulator
  40. False

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