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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 225 · 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 of these needs a heat insulator? (a) an oven glove (b) the core of a wire (c) a hair band (d) a skipping rope
  2. 2.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.Which of these needs a waterproof material? (a) a car seat belt (b) a car windscreen (c) a switch contact (d) a water tank
  4. 4.Which of these needs a transparent material? (a) a switch contact (b) a water tank (c) a window pane (d) a yoga mat
  5. 5.🧱 Which property matters most for a switch contact? (a) transparent (b) flexible (c) waterproof (d) electrical conductor
  6. 6.Which of these needs a flexible material? (a) a boat hull (b) a plug pin (c) a yoga mat (d) a tea flask lining
  7. 7.True or false: a window pane needs a heat insulator. (a) False (b) True
  8. 8.🧱 Which material is best for the bars inside concrete? (a) steel (b) glass (c) plastic (d) rubber
  9. 9.🧱 Which material is best for a window pane? (a) wood (b) brick (c) glass (d) steel
  10. 10.True or false: a switch contact needs an electrical conductor. (a) False (b) True
  11. 11.🧱 Is plastic an electrical conductor or an insulator? (a) an insulator (b) a conductor
  12. 12.🧱 Which property matters most for a tea flask lining? (a) transparent (b) heat insulator (c) flexible (d) waterproof
  13. 13.🧱 Which property matters most for a hair band? (a) heat insulator (b) electrical conductor (c) flexible (d) waterproof
  14. 14.🧱 Which property matters most for a water tank? (a) heat insulator (b) electrical conductor (c) waterproof (d) flexible
  15. 15.🔍 Which is the odd one out? (a) iron (b) plastic (c) copper (d) aluminium
  16. 16.Which of these needs a waterproof material? (a) a car seat belt (b) a boat hull (c) a switch contact (d) a car windscreen
  17. 17.True or false: a window pane needs a waterproof material. (a) True (b) False
  18. 18.Which of these needs a waterproof material? (a) a switch contact (b) a car seat belt (c) a raincoat (d) a car windscreen
  19. 19.🧱 Is glass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  20. 20.🧱 Which material is best for the core of an electric wire? (a) glass (b) wood (c) copper (d) rubber
  21. 21.🧱 Is steel an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🧱 Which material is best for a raincoat? (a) cardboard (b) cotton wool (c) plastic-coated cloth (d) paper
  23. 23.🧱 Which property matters most for an oven glove? (a) electrical conductor (b) flexible (c) waterproof (d) heat insulator
  24. 24.True or false: a raincoat needs a flexible material. (a) True (b) False
  25. 25.True or false: a boat hull needs a waterproof material. (a) False (b) True
  26. 26.🧱 Which property matters most for a yoga mat? (a) electrical conductor (b) flexible (c) waterproof (d) heat insulator
  27. 27.🧱 Is clay pottery an electrical conductor or an insulator? (a) an insulator (b) a conductor
  28. 28.True or false: a plug pin needs a heat insulator. (a) False (b) True
  29. 29.🧱 Is cotton cloth an electrical conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.🔍 Which is the odd one out? (a) aluminium (b) steel (c) brass (d) clay pottery
  31. 31.🔍 Which is the odd one out? (a) rubber (b) brass (c) dry wood (d) clay pottery
  32. 32.True or false: a plug pin needs a waterproof material. (a) False (b) True
  33. 33.Which of these needs a transparent material? (a) a hair band (b) a car windscreen (c) a cooking pot handle (d) a boat hull
  34. 34.True or false: a tea flask lining needs a waterproof material. (a) True (b) False
  35. 35.True or false: the core of a wire needs a heat insulator. (a) False (b) True
  36. 36.🔍 Which is the odd one out? (a) clay pottery (b) aluminium (c) rubber (d) glass
  37. 37.🧱 Is dry wood an electrical conductor or an insulator? (a) an insulator (b) a conductor
  38. 38.🔍 Which is the odd one out? (a) aluminium (b) dry wood (c) graphite (d) brass
  39. 39.🧱 Which property matters most for a car seat belt? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  40. 40.Which of these needs a waterproof material? (a) the core of a wire (b) a car seat belt (c) a roof sheet (d) a plug pin

Answer key

  1. an oven glove
  2. a conductor
  3. a water tank
  4. a window pane
  5. electrical conductor
  6. a yoga mat
  7. False
  8. steel
  9. glass
  10. True
  11. an insulator
  12. heat insulator
  13. flexible
  14. waterproof
  15. plastic
  16. a boat hull
  17. False
  18. a raincoat
  19. an insulator
  20. copper
  21. a conductor
  22. plastic-coated cloth
  23. heat insulator
  24. False
  25. True
  26. flexible
  27. an insulator
  28. False
  29. an insulator
  30. clay pottery
  31. brass
  32. False
  33. a car windscreen
  34. False
  35. False
  36. aluminium
  37. an insulator
  38. dry wood
  39. flexible
  40. a roof sheet

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