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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 632 · 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.True or false: a switch contact needs a flexible material. (a) False (b) True
  2. 2.🧱 Which property matters most for a car windscreen? (a) flexible (b) electrical conductor (c) waterproof (d) transparent
  3. 3.🧱 Which property matters most for a water tank? (a) heat insulator (b) flexible (c) waterproof (d) transparent
  4. 4.Which of these needs a transparent material? (a) a yoga mat (b) a skipping rope (c) a window pane (d) a roof sheet
  5. 5.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  6. 6.🧱 Is dry wood an electrical conductor or an insulator? (a) a conductor (b) an insulator
  7. 7.Which of these needs a transparent material? (a) a car seat belt (b) the core of a wire (c) a magnifier lens (d) a switch contact
  8. 8.Which of these needs a transparent material? (a) an oven glove (b) a hair band (c) a plug pin (d) a car windscreen
  9. 9.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.🔍 Which is the odd one out? (a) copper (b) rubber (c) graphite (d) aluminium
  11. 11.🔍 Which is the odd one out? (a) dry wood (b) copper (c) glass (d) plastic
  12. 12.🧱 Which property matters most for a plug pin? (a) flexible (b) electrical conductor (c) heat insulator (d) transparent
  13. 13.Which of these needs an electrical conductor? (a) a water tank (b) a plug pin (c) a skipping rope (d) an umbrella cover
  14. 14.🔍 Which is the odd one out? (a) graphite (b) brass (c) copper (d) plastic
  15. 15.🧱 Which material is best for a window pane? (a) brick (b) glass (c) wood (d) steel
  16. 16.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.Which of these needs a waterproof material? (a) an umbrella cover (b) an oven glove (c) a car seat belt (d) a spectacle lens
  18. 18.True or false: a boat hull needs a waterproof material. (a) True (b) False
  19. 19.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🔍 Which is the odd one out? (a) dry wood (b) brass (c) steel (d) copper
  23. 23.Which of these needs a transparent material? (a) a water tank (b) a raincoat (c) a spectacle lens (d) a hair band
  24. 24.True or false: a raincoat needs a heat insulator. (a) False (b) True
  25. 25.True or false: a cooking pot handle needs an electrical conductor. (a) True (b) False
  26. 26.True or false: a car windscreen needs a heat insulator. (a) True (b) False
  27. 27.Which of these needs a heat insulator? (a) a hair band (b) a skipping rope (c) a boat hull (d) a cooking pot handle
  28. 28.Which of these needs a flexible material? (a) a yoga mat (b) a boat hull (c) a roof sheet (d) a tea flask lining
  29. 29.🔍 Which is the odd one out? (a) brass (b) rubber (c) dry wood (d) cotton cloth
  30. 30.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) rubber (d) glass
  31. 31.🧱 Which material is best for a cooking pot handle? (a) copper (b) aluminium (c) iron (d) wood or plastic
  32. 32.🧱 Which material is best for a raincoat? (a) paper (b) cotton wool (c) cardboard (d) plastic-coated cloth
  33. 33.True or false: a window pane needs a flexible material. (a) False (b) True
  34. 34.🔍 Which is the odd one out? (a) graphite (b) steel (c) aluminium (d) cotton cloth
  35. 35.🔍 Which is the odd one out? (a) rubber (b) steel (c) glass (d) clay pottery
  36. 36.True or false: a skipping rope needs a flexible material. (a) False (b) True
  37. 37.Which of these needs an electrical conductor? (a) a raincoat (b) the core of a wire (c) a window pane (d) a car seat belt
  38. 38.True or false: a window pane needs an electrical conductor. (a) True (b) False
  39. 39.Which of these needs a waterproof material? (a) a car seat belt (b) a tea flask lining (c) an oven glove (d) a water tank
  40. 40.Which of these needs a flexible material? (a) a hair band (b) a tea flask lining (c) an oven glove (d) the core of a wire

Answer key

  1. False
  2. transparent
  3. waterproof
  4. a window pane
  5. a conductor
  6. an insulator
  7. a magnifier lens
  8. a car windscreen
  9. a conductor
  10. rubber
  11. copper
  12. electrical conductor
  13. a plug pin
  14. plastic
  15. glass
  16. a conductor
  17. an umbrella cover
  18. True
  19. an insulator
  20. an insulator
  21. an insulator
  22. dry wood
  23. a spectacle lens
  24. False
  25. False
  26. False
  27. a cooking pot handle
  28. a yoga mat
  29. brass
  30. copper
  31. wood or plastic
  32. plastic-coated cloth
  33. False
  34. cotton cloth
  35. steel
  36. True
  37. the core of a wire
  38. False
  39. a water tank
  40. a hair band

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