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Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 98 · 40 questions
TalentJR

Engineer's tip (Low, wide, flexible): Safer: wide base, flexible joints, bracing, steel in concrete, light roof, rubber pads, simple shape. Less safe: heavy tops, narrow bases, loose bricks, no steel, brittle joints. Tipping: compare height ÷ base width — the smaller it is, the steadier the block.

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  1. 1.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 30 cm wide base, tower B is 180 cm tall on a 30 cm base and tower C is 20 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
  2. 2.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
  3. 3.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  4. 4.🔍 Which is the odd one out? (a) building tall and narrow (b) raising heavy tanks high (c) making brittle joints (d) using flexible joints
  5. 5.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) having a wide base (c) leaving out steel bars (d) raising heavy tanks high
  6. 6.True or false: building tall and narrow makes a building safer in earthquakes. (a) False (b) True
  7. 7.Which of these makes a building safer in earthquakes? (a) using a light roof (b) making brittle joints (c) stacking loose bricks (d) using a heavy roof
  8. 8.True or false: using a light roof makes a building safer in earthquakes. (a) False (b) True
  9. 9.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) making brittle joints (c) using a heavy roof (d) keeping a simple shape
  10. 10.🏚️ Three solid model towers are made of the same material. Tower A is 200 cm tall on a 40 cm wide base, tower B is 60 cm tall on a 20 cm base and tower C is 80 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
  11. 11.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
  12. 12.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) hanging outside (c) low down (d) on the very top
  13. 13.True or false: leaving out steel bars makes a building safer in earthquakes. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) using flexible joints (b) keeping a simple shape (c) stacking loose bricks (d) fitting rubber base pads
  15. 15.🔍 Which is the odd one out? (a) having a wide base (b) using flexible joints (c) adding steel to concrete (d) raising heavy tanks high
  16. 16.Which of these makes a building less safe in earthquakes? (a) using a heavy roof (b) adding steel to concrete (c) using a light roof (d) using flexible joints
  17. 17.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  18. 18.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  19. 19.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 30 cm wide base, tower B is 80 cm tall on a 10 cm base and tower C is 180 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
  20. 20.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 40 cm wide base, tower B is 160 cm tall on a 40 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
  21. 21.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  22. 22.True or false: using a light roof makes a building less safe in earthquakes. (a) False (b) True
  23. 23.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) fitting rubber base pads (c) stacking loose bricks (d) adding cross bracing
  24. 24.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  25. 25.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) adding steel to concrete (c) leaving out steel bars (d) making brittle joints
  26. 26.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
  27. 27.🏚️ Why is a wide base safer? (a) it is harder to tip over (b) it is colourful (c) it is lighter (d) it is taller
  28. 28.🔍 Which is the odd one out? (a) building tall and narrow (b) using a heavy roof (c) having a wide base (d) raising heavy tanks high
  29. 29.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False
  30. 30.True or false: stacking loose bricks makes a building safer in earthquakes. (a) True (b) False
  31. 31.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  32. 32.🏚️ Three solid model towers are made of the same material. Tower A is 90 cm tall on a 30 cm wide base, tower B is 160 cm tall on a 40 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
  33. 33.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
  34. 34.True or false: using a heavy roof makes a building less safe in earthquakes. (a) True (b) False
  35. 35.🔍 Which is the odd one out? (a) using a heavy roof (b) making brittle joints (c) stacking loose bricks (d) keeping a simple shape
  36. 36.🔍 Which is the odd one out? (a) having a wide base (b) using flexible joints (c) keeping a simple shape (d) leaving out steel bars
  37. 37.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  38. 38.🔍 Which is the odd one out? (a) adding steel to concrete (b) having a wide base (c) using a light roof (d) using a heavy roof
  39. 39.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) having a wide base (c) adding cross bracing (d) raising heavy tanks high
  40. 40.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes

Answer key

  1. tower B
  2. tower A
  3. safer in earthquakes
  4. using flexible joints
  5. having a wide base
  6. False
  7. using a light roof
  8. True
  9. keeping a simple shape
  10. tower C
  11. True
  12. low down
  13. False
  14. stacking loose bricks
  15. raising heavy tanks high
  16. using a heavy roof
  17. less safe
  18. safer in earthquakes
  19. tower B
  20. tower A
  21. safer in earthquakes
  22. False
  23. stacking loose bricks
  24. safer in earthquakes
  25. adding steel to concrete
  26. True
  27. it is harder to tip over
  28. having a wide base
  29. False
  30. False
  31. less safe
  32. tower A
  33. True
  34. True
  35. keeping a simple shape
  36. leaving out steel bars
  37. less safe
  38. using a heavy roof
  39. raising heavy tanks high
  40. less safe

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