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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 178 · 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) cardboard (b) plastic-coated cloth (c) cotton wool (d) paper
  2. 2.🧱 Is aluminium an electrical conductor or an insulator? (a) a conductor (b) an insulator
  3. 3.🔍 Which is the odd one out? (a) aluminium (b) graphite (c) copper (d) glass
  4. 4.🔍 Which is the odd one out? (a) iron (b) plastic (c) aluminium (d) copper
  5. 5.🧱 Which property matters most for a switch contact? (a) heat insulator (b) flexible (c) electrical conductor (d) transparent
  6. 6.🧱 Which property matters most for a hair band? (a) flexible (b) heat insulator (c) electrical conductor (d) waterproof
  7. 7.🔍 Which is the odd one out? (a) rubber (b) dry wood (c) clay pottery (d) iron
  8. 8.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) electrical conductor (c) transparent (d) heat insulator
  9. 9.🔍 Which is the odd one out? (a) steel (b) brass (c) graphite (d) rubber
  10. 10.Which of these needs a flexible material? (a) a car windscreen (b) a spectacle lens (c) a skipping rope (d) a water tank
  11. 11.🧱 Which material is best for a window pane? (a) wood (b) steel (c) brick (d) glass
  12. 12.True or false: a plug pin needs a waterproof material. (a) True (b) False
  13. 13.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.🧱 Which material is best for the bars inside concrete? (a) plastic (b) rubber (c) steel (d) glass
  15. 15.🧱 Which material is best for the core of an electric wire? (a) copper (b) glass (c) wood (d) rubber
  16. 16.🧱 Which property matters most for a roof sheet? (a) waterproof (b) electrical conductor (c) transparent (d) flexible
  17. 17.True or false: a plug pin needs an electrical conductor. (a) False (b) True
  18. 18.Which of these needs a heat insulator? (a) a window pane (b) a tea flask lining (c) a car seat belt (d) a yoga mat
  19. 19.🧱 Which property matters most for a car seat belt? (a) electrical conductor (b) flexible (c) transparent (d) waterproof
  20. 20.🧱 Is copper an electrical conductor or an insulator? (a) a conductor (b) an insulator
  21. 21.🧱 Is brass an electrical conductor or an insulator? (a) an insulator (b) a conductor
  22. 22.🧱 Which property matters most for a cooking pot handle? (a) transparent (b) waterproof (c) flexible (d) heat insulator
  23. 23.True or false: a water tank needs a waterproof material. (a) True (b) False
  24. 24.True or false: a skipping rope needs a flexible material. (a) True (b) False
  25. 25.Which of these needs an electrical conductor? (a) an umbrella cover (b) a hair band (c) a car seat belt (d) the core of a wire
  26. 26.🧱 Is iron an electrical conductor or an insulator? (a) a conductor (b) an insulator
  27. 27.True or false: a hair band needs a waterproof material. (a) True (b) False
  28. 28.True or false: a car windscreen needs a transparent material. (a) False (b) True
  29. 29.Which of these needs a flexible material? (a) the core of a wire (b) a switch contact (c) a hair band (d) a cooking pot handle
  30. 30.True or false: the core of a wire needs a waterproof material. (a) False (b) True
  31. 31.Which of these needs a heat insulator? (a) a roof sheet (b) a switch contact (c) a raincoat (d) an oven glove
  32. 32.True or false: a water tank needs a flexible material. (a) False (b) True
  33. 33.Which of these needs an electrical conductor? (a) a yoga mat (b) an oven glove (c) a switch contact (d) a raincoat
  34. 34.🧱 Which property matters most for a yoga mat? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  35. 35.True or false: a water tank needs an electrical conductor. (a) False (b) True
  36. 36.True or false: a magnifier lens needs a transparent material. (a) False (b) True
  37. 37.🔍 Which is the odd one out? (a) graphite (b) plastic (c) glass (d) clay pottery
  38. 38.Which of these needs a waterproof material? (a) a skipping rope (b) a window pane (c) a yoga mat (d) an umbrella cover
  39. 39.🔍 Which is the odd one out? (a) aluminium (b) plastic (c) glass (d) dry wood
  40. 40.Which of these needs a flexible material? (a) an oven glove (b) a raincoat (c) a yoga mat (d) an umbrella cover

Answer key

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

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