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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 74 · 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 material is best for a raincoat? (a) paper (b) cotton wool (c) cardboard (d) plastic-coated cloth
  2. 2.True or false: a hair band needs an electrical conductor. (a) True (b) False
  3. 3.🧱 Which property matters most for a boat hull? (a) flexible (b) waterproof (c) heat insulator (d) electrical conductor
  4. 4.🧱 Which material is best for a window pane? (a) steel (b) glass (c) wood (d) brick
  5. 5.🔍 Which is the odd one out? (a) copper (b) brass (c) dry wood (d) graphite
  6. 6.🧱 Which property matters most for a tea flask lining? (a) electrical conductor (b) heat insulator (c) waterproof (d) flexible
  7. 7.🔍 Which is the odd one out? (a) brass (b) plastic (c) copper (d) iron
  8. 8.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.Which of these needs a heat insulator? (a) a tea flask lining (b) an umbrella cover (c) a roof sheet (d) a plug pin
  10. 10.🔍 Which is the odd one out? (a) plastic (b) rubber (c) graphite (d) cotton cloth
  11. 11.🔍 Which is the odd one out? (a) steel (b) dry wood (c) cotton cloth (d) plastic
  12. 12.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  13. 13.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) wood (d) copper
  14. 14.True or false: a yoga mat needs a flexible material. (a) False (b) True
  15. 15.True or false: a car seat belt needs a flexible material. (a) True (b) False
  16. 16.True or false: a yoga mat needs a transparent material. (a) True (b) False
  17. 17.Which of these needs a heat insulator? (a) a boat hull (b) a magnifier lens (c) an oven glove (d) the core of a wire
  18. 18.🔍 Which is the odd one out? (a) clay pottery (b) dry wood (c) cotton cloth (d) copper
  19. 19.Which of these needs an electrical conductor? (a) a yoga mat (b) a raincoat (c) a switch contact (d) a car seat belt
  20. 20.🔍 Which is the odd one out? (a) clay pottery (b) plastic (c) iron (d) glass
  21. 21.True or false: a magnifier lens needs a transparent material. (a) True (b) False
  22. 22.True or false: a magnifier lens needs a heat insulator. (a) True (b) False
  23. 23.🧱 Which property matters most for a raincoat? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
  24. 24.True or false: a roof sheet needs a waterproof material. (a) False (b) True
  25. 25.Which of these needs a waterproof material? (a) a plug pin (b) a skipping rope (c) a roof sheet (d) a magnifier lens
  26. 26.🧱 Which material is best for the bars inside concrete? (a) plastic (b) glass (c) steel (d) rubber
  27. 27.True or false: the core of a wire needs an electrical conductor. (a) False (b) True
  28. 28.True or false: a tea flask lining needs a heat insulator. (a) True (b) False
  29. 29.🧱 Which property matters most for a hair band? (a) waterproof (b) electrical conductor (c) transparent (d) flexible
  30. 30.Which of these needs a waterproof material? (a) a raincoat (b) a cooking pot handle (c) a skipping rope (d) a plug pin
  31. 31.🧱 Is clay pottery an electrical conductor or an insulator? (a) a conductor (b) an insulator
  32. 32.🧱 Is glass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  33. 33.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  34. 34.True or false: a spectacle lens needs a heat insulator. (a) False (b) True
  35. 35.🧱 Which property matters most for an oven glove? (a) heat insulator (b) flexible (c) electrical conductor (d) waterproof
  36. 36.True or false: a skipping rope needs a flexible material. (a) False (b) True
  37. 37.Which of these needs a flexible material? (a) a tea flask lining (b) a boat hull (c) the core of a wire (d) a skipping rope
  38. 38.Which of these needs a waterproof material? (a) a car windscreen (b) a hair band (c) an umbrella cover (d) a spectacle lens
  39. 39.🔍 Which is the odd one out? (a) graphite (b) aluminium (c) brass (d) glass
  40. 40.🧱 Which property matters most for an umbrella cover? (a) heat insulator (b) transparent (c) flexible (d) waterproof

Answer key

  1. plastic-coated cloth
  2. False
  3. waterproof
  4. glass
  5. dry wood
  6. heat insulator
  7. plastic
  8. an insulator
  9. a tea flask lining
  10. graphite
  11. steel
  12. a conductor
  13. copper
  14. True
  15. True
  16. False
  17. an oven glove
  18. copper
  19. a switch contact
  20. iron
  21. True
  22. False
  23. waterproof
  24. True
  25. a roof sheet
  26. steel
  27. True
  28. True
  29. flexible
  30. a raincoat
  31. an insulator
  32. an insulator
  33. a conductor
  34. False
  35. heat insulator
  36. True
  37. a skipping rope
  38. an umbrella cover
  39. glass
  40. waterproof

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