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Engineering Worksheet: Materials

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

Answer key

  1. plastic
  2. waterproof
  3. a car seat belt
  4. a conductor
  5. copper
  6. flexible
  7. an insulator
  8. flexible
  9. a cooking pot handle
  10. wood or plastic
  11. iron
  12. a car windscreen
  13. False
  14. True
  15. an umbrella cover
  16. steel
  17. plastic-coated cloth
  18. True
  19. waterproof
  20. an insulator
  21. waterproof
  22. flexible
  23. rubber
  24. True
  25. aluminium
  26. clay pottery
  27. a conductor
  28. a boat hull
  29. an oven glove
  30. a hair band
  31. brass
  32. a plug pin
  33. heat insulator
  34. True
  35. glass
  36. a magnifier lens
  37. an insulator
  38. False
  39. True
  40. True

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