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Engineering Worksheet: Materials

Engineering lesson 19: Materials and their properties · Set 438 · 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.

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

Answer key

  1. dry wood
  2. True
  3. copper
  4. a magnifier lens
  5. steel
  6. flexible
  7. an insulator
  8. an insulator
  9. False
  10. a conductor
  11. a spectacle lens
  12. True
  13. heat insulator
  14. a skipping rope
  15. wood or plastic
  16. flexible
  17. copper
  18. plastic-coated cloth
  19. waterproof
  20. an insulator
  21. steel
  22. glass
  23. waterproof
  24. heat insulator
  25. a roof sheet
  26. an oven glove
  27. False
  28. False
  29. cotton cloth
  30. waterproof
  31. False
  32. False
  33. an insulator
  34. an insulator
  35. False
  36. True
  37. electrical conductor
  38. plastic
  39. True
  40. a car seat belt

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