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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 522 · 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 plug pin? (a) transparent (b) flexible (c) waterproof (d) electrical conductor
  2. 2.🧱 Which property matters most for the core of a wire? (a) waterproof (b) electrical conductor (c) flexible (d) heat insulator
  3. 3.🔍 Which is the odd one out? (a) rubber (b) aluminium (c) clay pottery (d) cotton cloth
  4. 4.🔍 Which is the odd one out? (a) steel (b) clay pottery (c) rubber (d) glass
  5. 5.Which of these needs a transparent material? (a) a boat hull (b) the core of a wire (c) a car seat belt (d) a magnifier lens
  6. 6.🧱 Which material is best for a window pane? (a) brick (b) glass (c) wood (d) steel
  7. 7.🧱 Which property matters most for a car seat belt? (a) waterproof (b) electrical conductor (c) transparent (d) flexible
  8. 8.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  9. 9.🧱 Which material is best for a raincoat? (a) cotton wool (b) cardboard (c) plastic-coated cloth (d) paper
  10. 10.🧱 Is graphite an electrical conductor or an insulator? (a) a conductor (b) an insulator
  11. 11.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  12. 12.Which of these needs a flexible material? (a) the core of a wire (b) a raincoat (c) a car seat belt (d) an umbrella cover
  13. 13.True or false: a boat hull needs a waterproof material. (a) False (b) True
  14. 14.🧱 Which material is best for the core of an electric wire? (a) rubber (b) glass (c) wood (d) copper
  15. 15.🔍 Which is the odd one out? (a) rubber (b) copper (c) aluminium (d) brass
  16. 16.True or false: a switch contact needs a flexible material. (a) True (b) False
  17. 17.🔍 Which is the odd one out? (a) cotton cloth (b) graphite (c) plastic (d) dry wood
  18. 18.🧱 Which property matters most for a raincoat? (a) flexible (b) transparent (c) heat insulator (d) waterproof
  19. 19.True or false: a roof sheet needs an electrical conductor. (a) False (b) True
  20. 20.🧱 Which property matters most for a switch contact? (a) transparent (b) electrical conductor (c) waterproof (d) flexible
  21. 21.Which of these needs an electrical conductor? (a) a hair band (b) a switch contact (c) a raincoat (d) a magnifier lens
  22. 22.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) transparent (c) flexible (d) heat insulator
  23. 23.Which of these needs a waterproof material? (a) a yoga mat (b) an umbrella cover (c) a magnifier lens (d) a car seat belt
  24. 24.True or false: an oven glove needs a waterproof material. (a) True (b) False
  25. 25.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) glass (d) steel
  26. 26.🔍 Which is the odd one out? (a) clay pottery (b) brass (c) cotton cloth (d) glass
  27. 27.Which of these needs a waterproof material? (a) a skipping rope (b) a spectacle lens (c) a water tank (d) a magnifier lens
  28. 28.Which of these needs a heat insulator? (a) a hair band (b) a water tank (c) a magnifier lens (d) a tea flask lining
  29. 29.🔍 Which is the odd one out? (a) copper (b) brass (c) steel (d) cotton cloth
  30. 30.🧱 Which property matters most for a tea flask lining? (a) waterproof (b) electrical conductor (c) transparent (d) heat insulator
  31. 31.🧱 Which property matters most for a boat hull? (a) heat insulator (b) waterproof (c) flexible (d) electrical conductor
  32. 32.🧱 Which property matters most for an oven glove? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  33. 33.🧱 Which property matters most for a hair band? (a) waterproof (b) flexible (c) heat insulator (d) transparent
  34. 34.🧱 Which property matters most for a skipping rope? (a) electrical conductor (b) heat insulator (c) waterproof (d) flexible
  35. 35.🔍 Which is the odd one out? (a) steel (b) graphite (c) glass (d) brass
  36. 36.Which of these needs a heat insulator? (a) the core of a wire (b) a hair band (c) a raincoat (d) an oven glove
  37. 37.True or false: an oven glove needs a flexible material. (a) True (b) False
  38. 38.🧱 Which material is best for a cooking pot handle? (a) copper (b) wood or plastic (c) iron (d) aluminium
  39. 39.Which of these needs a waterproof material? (a) a switch contact (b) a roof sheet (c) a spectacle lens (d) the core of a wire
  40. 40.🔍 Which is the odd one out? (a) iron (b) plastic (c) dry wood (d) rubber

Answer key

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

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