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Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 92 · 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 30 cm tall on a 10 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 30 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
  2. 2.True or false: making brittle joints makes a building safer in earthquakes. (a) True (b) False
  3. 3.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
  4. 4.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  5. 5.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) low down (c) on a thin pole (d) on the very top
  6. 6.🔍 Which is the odd one out? (a) making brittle joints (b) building tall and narrow (c) using flexible joints (d) leaving out steel bars
  7. 7.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) having a wide base (c) making brittle joints (d) raising heavy tanks high
  8. 8.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) keeping a simple shape (c) using flexible joints (d) making brittle joints
  9. 9.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) True (b) False
  10. 10.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) building tall and narrow (c) using a light roof (d) raising heavy tanks high
  11. 11.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 150 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
  12. 12.True or false: adding cross bracing makes a building less safe in earthquakes. (a) False (b) True
  13. 13.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  14. 14.🔍 Which is the odd one out? (a) adding cross bracing (b) adding steel to concrete (c) using a heavy roof (d) using flexible joints
  15. 15.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) building tall and narrow (c) using a heavy roof (d) using flexible joints
  16. 16.True or false: using a light roof makes a building less safe in earthquakes. (a) True (b) False
  17. 17.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 10 cm wide base, tower B is 160 cm tall on a 40 cm base and tower C is 20 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
  18. 18.🔍 Which is the odd one out? (a) fitting rubber base pads (b) raising heavy tanks high (c) adding steel to concrete (d) adding cross bracing
  19. 19.🔍 Which is the odd one out? (a) using a light roof (b) adding cross bracing (c) stacking loose bricks (d) having a wide base
  20. 20.🏚️ Why is a wide base safer? (a) it is lighter (b) it is harder to tip over (c) it is colourful (d) it is taller
  21. 21.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) leaving out steel bars (c) adding steel to concrete (d) using a heavy roof
  22. 22.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) using a heavy roof (c) adding steel to concrete (d) adding cross bracing
  23. 23.🏚️ Three solid model towers are made of the same material. Tower A is 100 cm tall on a 20 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 20 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
  24. 24.🔍 Which is the odd one out? (a) leaving out steel bars (b) stacking loose bricks (c) making brittle joints (d) adding cross bracing
  25. 25.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 10 cm wide base, tower B is 210 cm tall on a 30 cm base and tower C is 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
  26. 26.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  27. 27.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  28. 28.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  29. 29.Which of these makes a building safer in earthquakes? (a) adding cross bracing (b) using a heavy roof (c) making brittle joints (d) stacking loose bricks
  30. 30.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 20 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 160 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
  31. 31.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 150 cm tall on a 30 cm base and tower C is 70 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
  32. 32.🔍 Which is the odd one out? (a) stacking loose bricks (b) leaving out steel bars (c) adding steel to concrete (d) raising heavy tanks high
  33. 33.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  34. 34.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  35. 35.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) fitting rubber base pads (c) stacking loose bricks (d) using a light roof
  36. 36.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) raising heavy tanks high (c) keeping a simple shape (d) making brittle joints
  37. 37.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 20 cm base and tower C is 120 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
  38. 38.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  39. 39.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  40. 40.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False

Answer key

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

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