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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 94 · 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.True or false: a skipping rope needs an electrical conductor. (a) False (b) True
  2. 2.🧱 Which material is best for the core of an electric wire? (a) wood (b) rubber (c) glass (d) copper
  3. 3.Which of these needs a flexible material? (a) an oven glove (b) a car seat belt (c) a plug pin (d) a roof sheet
  4. 4.🧱 Which property matters most for an umbrella cover? (a) waterproof (b) heat insulator (c) electrical conductor (d) transparent
  5. 5.🧱 Which property matters most for an oven glove? (a) flexible (b) waterproof (c) transparent (d) heat insulator
  6. 6.Which of these needs an electrical conductor? (a) a car seat belt (b) a magnifier lens (c) the core of a wire (d) an oven glove
  7. 7.🧱 Is rubber an electrical conductor or an insulator? (a) an insulator (b) a conductor
  8. 8.🔍 Which is the odd one out? (a) dry wood (b) copper (c) cotton cloth (d) rubber
  9. 9.Which of these needs an electrical conductor? (a) a raincoat (b) a water tank (c) a car seat belt (d) a switch contact
  10. 10.True or false: a roof sheet needs a waterproof material. (a) True (b) False
  11. 11.Which of these needs a waterproof material? (a) a cooking pot handle (b) a magnifier lens (c) a skipping rope (d) a roof sheet
  12. 12.Which of these needs a heat insulator? (a) a water tank (b) a raincoat (c) the core of a wire (d) an oven glove
  13. 13.🧱 Is brass an electrical conductor or an insulator? (a) a conductor (b) an insulator
  14. 14.Which of these needs a waterproof material? (a) a raincoat (b) a window pane (c) a magnifier lens (d) a tea flask lining
  15. 15.🔍 Which is the odd one out? (a) plastic (b) graphite (c) rubber (d) clay pottery
  16. 16.🧱 Is cotton cloth an electrical conductor or an insulator? (a) a conductor (b) an insulator
  17. 17.True or false: a car seat belt needs a transparent material. (a) True (b) False
  18. 18.🧱 Which property matters most for a window pane? (a) flexible (b) waterproof (c) electrical conductor (d) transparent
  19. 19.Which of these needs a transparent material? (a) a spectacle lens (b) a car seat belt (c) an oven glove (d) a raincoat
  20. 20.🔍 Which is the odd one out? (a) brass (b) graphite (c) iron (d) cotton cloth
  21. 21.Which of these needs a waterproof material? (a) the core of a wire (b) a window pane (c) a spectacle lens (d) a boat hull
  22. 22.🔍 Which is the odd one out? (a) copper (b) rubber (c) brass (d) graphite
  23. 23.🧱 Which material is best for a raincoat? (a) cardboard (b) cotton wool (c) paper (d) plastic-coated cloth
  24. 24.True or false: a water tank needs a flexible material. (a) False (b) True
  25. 25.True or false: a spectacle lens needs a waterproof material. (a) True (b) False
  26. 26.🧱 Which property matters most for a magnifier lens? (a) flexible (b) transparent (c) waterproof (d) electrical conductor
  27. 27.Which of these needs a flexible material? (a) a raincoat (b) a magnifier lens (c) a switch contact (d) a yoga mat
  28. 28.True or false: a hair band needs an electrical conductor. (a) False (b) True
  29. 29.🧱 Is graphite an electrical conductor or an insulator? (a) an insulator (b) a conductor
  30. 30.🧱 Which property matters most for a yoga mat? (a) flexible (b) electrical conductor (c) heat insulator (d) waterproof
  31. 31.🧱 Which material is best for a window pane? (a) wood (b) steel (c) brick (d) glass
  32. 32.True or false: a switch contact needs a waterproof material. (a) False (b) True
  33. 33.🧱 Is plastic an electrical conductor or an insulator? (a) a conductor (b) an insulator
  34. 34.Which of these needs a flexible material? (a) a cooking pot handle (b) a skipping rope (c) an umbrella cover (d) the core of a wire
  35. 35.Which of these needs a heat insulator? (a) a magnifier lens (b) a cooking pot handle (c) a raincoat (d) a roof sheet
  36. 36.True or false: a skipping rope needs a flexible material. (a) False (b) True
  37. 37.🧱 Which property matters most for a raincoat? (a) waterproof (b) electrical conductor (c) flexible (d) transparent
  38. 38.True or false: a switch contact needs a flexible material. (a) False (b) True
  39. 39.True or false: a car windscreen needs a heat insulator. (a) False (b) True
  40. 40.🧱 Which material is best for the bars inside concrete? (a) rubber (b) steel (c) glass (d) plastic

Answer key

  1. False
  2. copper
  3. a car seat belt
  4. waterproof
  5. heat insulator
  6. the core of a wire
  7. an insulator
  8. copper
  9. a switch contact
  10. True
  11. a roof sheet
  12. an oven glove
  13. a conductor
  14. a raincoat
  15. graphite
  16. an insulator
  17. False
  18. transparent
  19. a spectacle lens
  20. cotton cloth
  21. a boat hull
  22. rubber
  23. plastic-coated cloth
  24. False
  25. False
  26. transparent
  27. a yoga mat
  28. False
  29. a conductor
  30. flexible
  31. glass
  32. False
  33. an insulator
  34. a skipping rope
  35. a cooking pot handle
  36. True
  37. waterproof
  38. False
  39. False
  40. steel

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