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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 999 · 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 a raincoat? (a) electrical conductor (b) heat insulator (c) waterproof (d) flexible
  2. 2.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  3. 3.Which of these needs a waterproof material? (a) a switch contact (b) a roof sheet (c) a yoga mat (d) a plug pin
  4. 4.🔍 Which is the odd one out? (a) plastic (b) brass (c) graphite (d) copper
  5. 5.True or false: a magnifier lens needs a transparent material. (a) True (b) False
  6. 6.🔍 Which is the odd one out? (a) dry wood (b) copper (c) cotton cloth (d) plastic
  7. 7.🧱 Which property matters most for a window pane? (a) waterproof (b) flexible (c) transparent (d) heat insulator
  8. 8.Which of these needs a heat insulator? (a) a magnifier lens (b) an oven glove (c) a boat hull (d) a yoga mat
  9. 9.🧱 Is iron an electrical conductor or an insulator? (a) an insulator (b) a conductor
  10. 10.Which of these needs an electrical conductor? (a) a switch contact (b) a water tank (c) a window pane (d) a car seat belt
  11. 11.Which of these needs a flexible material? (a) a car seat belt (b) a boat hull (c) a car windscreen (d) a magnifier lens
  12. 12.🧱 Which material is best for a window pane? (a) wood (b) brick (c) glass (d) steel
  13. 13.True or false: a hair band needs a flexible material. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) cotton cloth (b) plastic (c) glass (d) brass
  15. 15.🔍 Which is the odd one out? (a) glass (b) cotton cloth (c) graphite (d) rubber
  16. 16.🧱 Which property matters most for a spectacle lens? (a) electrical conductor (b) waterproof (c) flexible (d) transparent
  17. 17.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  18. 18.True or false: a window pane needs a transparent material. (a) True (b) False
  19. 19.🧱 Which material is best for the core of an electric wire? (a) copper (b) wood (c) rubber (d) glass
  20. 20.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🧱 Is steel an electrical conductor or an insulator? (a) a conductor (b) an insulator
  23. 23.🧱 Which property matters most for a water tank? (a) flexible (b) electrical conductor (c) waterproof (d) transparent
  24. 24.Which of these needs a heat insulator? (a) a switch contact (b) a cooking pot handle (c) a skipping rope (d) a plug pin
  25. 25.🧱 Which material is best for a raincoat? (a) plastic-coated cloth (b) cardboard (c) cotton wool (d) paper
  26. 26.🧱 Which property matters most for a boat hull? (a) waterproof (b) heat insulator (c) transparent (d) electrical conductor
  27. 27.Which of these needs a flexible material? (a) an umbrella cover (b) a boat hull (c) a window pane (d) a skipping rope
  28. 28.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  29. 29.Which of these needs an electrical conductor? (a) a cooking pot handle (b) a car windscreen (c) a roof sheet (d) the core of a wire
  30. 30.🔍 Which is the odd one out? (a) aluminium (b) steel (c) copper (d) dry wood
  31. 31.🧱 Which material is best for a cooking pot handle? (a) iron (b) aluminium (c) wood or plastic (d) copper
  32. 32.True or false: an oven glove needs an electrical conductor. (a) True (b) False
  33. 33.Which of these needs a transparent material? (a) a switch contact (b) an oven glove (c) a magnifier lens (d) the core of a wire
  34. 34.🧱 Is rubber an electrical conductor or an insulator? (a) a conductor (b) an insulator
  35. 35.True or false: a yoga mat needs a heat insulator. (a) True (b) False
  36. 36.True or false: an umbrella cover needs a waterproof material. (a) False (b) True
  37. 37.True or false: a car windscreen needs a waterproof material. (a) False (b) True
  38. 38.True or false: a water tank needs a waterproof material. (a) False (b) True
  39. 39.🧱 Which property matters most for a car windscreen? (a) transparent (b) waterproof (c) heat insulator (d) electrical conductor
  40. 40.True or false: a hair band needs a heat insulator. (a) True (b) False

Answer key

  1. waterproof
  2. a conductor
  3. a roof sheet
  4. plastic
  5. True
  6. copper
  7. transparent
  8. an oven glove
  9. a conductor
  10. a switch contact
  11. a car seat belt
  12. glass
  13. True
  14. brass
  15. graphite
  16. transparent
  17. True
  18. True
  19. copper
  20. a conductor
  21. an insulator
  22. a conductor
  23. waterproof
  24. a cooking pot handle
  25. plastic-coated cloth
  26. waterproof
  27. a skipping rope
  28. an insulator
  29. the core of a wire
  30. dry wood
  31. wood or plastic
  32. False
  33. a magnifier lens
  34. an insulator
  35. False
  36. True
  37. False
  38. True
  39. transparent
  40. False

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