Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 259 · 40 questions

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.

1. 1.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) using a heavy roof (c) raising heavy tanks high (d) keeping a simple shape
2. 2.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) adding steel to concrete (c) stacking loose bricks (d) building tall and narrow
3. 3.🏚️ Three solid model towers are made of the same material. Tower A is 160 cm tall on a 40 cm wide base, tower B is 80 cm tall on a 40 cm base and tower C is 90 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
4. 4.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.🔍 Which is the odd one out? (a) adding cross bracing (b) raising heavy tanks high (c) adding steel to concrete (d) using a light roof
6. 6.🏚️ 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 40 cm base and tower C is 100 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
7. 7.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
8. 8.True or false: stacking loose bricks makes a building less safe in earthquakes. (a) False (b) True
9. 9.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) leaving out steel bars (c) using flexible joints (d) raising heavy tanks high
10. 10.🏚️ Three solid model towers are made of the same material. Tower A is 140 cm tall on a 20 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 120 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
11. 11.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False
12. 12.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
13. 13.🔍 Which is the odd one out? (a) adding cross bracing (b) making brittle joints (c) using flexible joints (d) adding steel to concrete
14. 14.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) having a wide base
15. 15.🔍 Which is the odd one out? (a) building tall and narrow (b) leaving out steel bars (c) stacking loose bricks (d) adding cross bracing
16. 16.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they stop shaking (c) they are cheap (d) they bend, not break
17. 17.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
18. 18.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
19. 19.🔍 Which is the odd one out? (a) stacking loose bricks (b) using a heavy roof (c) making brittle joints (d) using a light roof
20. 20.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
21. 21.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) False (b) True
22. 22.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) building tall and narrow (c) using a light roof (d) having a wide base
23. 23.🏚️ 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 120 cm tall on a 20 cm base and tower C is 280 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
24. 24.🔍 Which is the odd one out? (a) fitting rubber base pads (b) adding cross bracing (c) stacking loose bricks (d) using a light roof
25. 25.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
26. 26.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on a thin pole (c) on the very top (d) low down
27. 27.🏚️ 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 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 B (b) tower C (c) tower A
28. 28.🏚️ 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 60 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
29. 29.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) using a heavy roof (c) stacking loose bricks (d) using a light roof
30. 30.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) False (b) True
31. 31.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) keeping a simple shape (c) making brittle joints (d) having a wide base
32. 32.🔍 Which is the odd one out? (a) using a light roof (b) having a wide base (c) using a heavy roof (d) keeping a simple shape
33. 33.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) having a wide base (c) leaving out steel bars (d) building tall and narrow
34. 34.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) leaving out steel bars (b) building tall and narrow (c) keeping a simple shape (d) using a heavy roof
36. 36.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
37. 37.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) adding cross bracing (c) stacking loose bricks (d) fitting rubber base pads
38. 38.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) True (b) False
39. 39.🏚️ Three solid model towers are made of the same material. Tower A is 50 cm tall on a 10 cm wide base, tower B is 140 cm tall on a 20 cm base and tower C is 30 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
40. 40.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True

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