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Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 191 · 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.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  2. 2.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they are cheap (c) they bend, not break (d) they look nice
  3. 3.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) leaving out steel bars (c) using flexible joints (d) raising heavy tanks high
  4. 4.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) on the very top (c) hanging outside (d) low down
  5. 5.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) using a light roof (c) keeping a simple shape (d) stacking loose bricks
  6. 6.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) raising heavy tanks high (c) making brittle joints (d) adding steel to concrete
  7. 7.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) False (b) True
  8. 8.🔍 Which is the odd one out? (a) having a wide base (b) making brittle joints (c) adding steel to concrete (d) adding cross bracing
  9. 9.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) False (b) True
  10. 10.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  11. 11.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 20 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
  12. 12.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a telescope (c) a microscope (d) a shake table
  13. 13.True or false: having a wide base makes a building safer in earthquakes. (a) True (b) False
  14. 14.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 40 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
  15. 15.🏚️ Three solid model towers are made of the same material. Tower A is 160 cm tall on a 20 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 60 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
  16. 16.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
  17. 17.🏚️ Three solid model towers are made of the same material. Tower A is 10 cm tall on a 10 cm wide base, tower B is 20 cm tall on a 10 cm base and tower C is 40 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
  18. 18.🔍 Which is the odd one out? (a) adding steel to concrete (b) adding cross bracing (c) stacking loose bricks (d) using flexible joints
  19. 19.🏚️ 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 20 cm tall on a 10 cm base and tower C is 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
  20. 20.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) True (b) False
  21. 21.True or false: adding steel to concrete makes a building safer in earthquakes. (a) False (b) True
  22. 22.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) adding cross bracing (c) using flexible joints (d) building tall and narrow
  23. 23.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) True (b) False
  24. 24.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using a light roof (c) keeping a simple shape (d) raising heavy tanks high
  25. 25.🏚️ 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 20 cm tall on a 10 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
  26. 26.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  27. 27.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) having a wide base (c) adding cross bracing (d) using a heavy roof
  28. 28.True or false: using a light roof makes a building less safe in earthquakes. (a) True (b) False
  29. 29.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
  30. 30.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 30 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 80 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
  31. 31.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 40 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
  32. 32.🔍 Which is the odd one out? (a) using a light roof (b) raising heavy tanks high (c) using flexible joints (d) fitting rubber base pads
  33. 33.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 20 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 240 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
  34. 34.True or false: using a heavy roof makes a building safer in earthquakes. (a) False (b) True
  35. 35.🔍 Which is the odd one out? (a) stacking loose bricks (b) building tall and narrow (c) adding steel to concrete (d) leaving out steel bars
  36. 36.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) adding cross bracing (c) building tall and narrow (d) stacking loose bricks
  37. 37.🔍 Which is the odd one out? (a) having a wide base (b) using a light roof (c) fitting rubber base pads (d) using a heavy roof
  38. 38.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
  39. 39.🔍 Which is the odd one out? (a) adding cross bracing (b) using a light roof (c) building tall and narrow (d) keeping a simple shape
  40. 40.🏚️ 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 20 cm tall on a 20 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B

Answer key

  1. less safe
  2. they bend, not break
  3. using flexible joints
  4. low down
  5. stacking loose bricks
  6. adding steel to concrete
  7. False
  8. making brittle joints
  9. True
  10. safer in earthquakes
  11. tower A
  12. a shake table
  13. True
  14. tower C
  15. tower A
  16. safer in earthquakes
  17. tower A
  18. stacking loose bricks
  19. tower C
  20. False
  21. True
  22. building tall and narrow
  23. True
  24. raising heavy tanks high
  25. tower B
  26. less safe
  27. using a heavy roof
  28. False
  29. safer in earthquakes
  30. tower B
  31. tower B
  32. raising heavy tanks high
  33. tower C
  34. False
  35. adding steel to concrete
  36. adding cross bracing
  37. using a heavy roof
  38. True
  39. building tall and narrow
  40. tower A

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