Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 469 · 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.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they bend, not break (c) they stop shaking (d) they look nice
2. 2.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
3. 3.True or false: building tall and narrow makes a building safer in earthquakes. (a) False (b) True
4. 4.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) using a heavy roof (c) adding steel to concrete (d) stacking loose bricks
5. 5.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on the very top (c) on a thin pole (d) low down
6. 6.🔍 Which is the odd one out? (a) adding cross bracing (b) using a light roof (c) having a wide base (d) stacking loose bricks
7. 7.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) making brittle joints (b) raising heavy tanks high (c) leaving out steel bars (d) using flexible joints
9. 9.🏚️ 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 240 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
10. 10.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using a light roof (c) having a wide base (d) raising heavy tanks high
11. 11.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
12. 12.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) using a light roof (c) building tall and narrow (d) fitting rubber base pads
13. 13.🏚️ Why is a wide base safer? (a) it is colourful (b) it is taller (c) it is harder to tip over (d) it is lighter
14. 14.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) False (b) True
15. 15.🏚️ 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 10 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
16. 16.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
17. 17.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) building tall and narrow (b) keeping a simple shape (c) leaving out steel bars (d) stacking loose bricks
19. 19.🏚️ 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 20 cm tall on a 20 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
20. 20.True or false: using a heavy roof makes a building less safe in earthquakes. (a) True (b) False
21. 21.🏚️ 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 70 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
22. 22.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) raising heavy tanks high (c) using a light roof (d) using a heavy roof
23. 23.🏚️ Three solid model towers are made of the same material. Tower A is 150 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 B (b) tower C (c) tower A
24. 24.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) using a heavy roof (c) making brittle joints (d) adding cross bracing
25. 25.Which of these makes a building safer in earthquakes? (a) having a wide base (b) raising heavy tanks high (c) making brittle joints (d) building tall and narrow
26. 26.🏚️ Three solid model towers are made of the same material. Tower A is 20 cm tall on a 10 cm wide base, tower B is 150 cm tall on a 30 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 B (c) tower A
27. 27.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
28. 28.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
29. 29.🔍 Which is the odd one out? (a) stacking loose bricks (b) building tall and narrow (c) leaving out steel bars (d) having a wide base
30. 30.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) using a heavy roof (c) using flexible joints (d) adding steel to concrete
31. 31.True or false: having a wide base makes a building less safe in earthquakes. (a) True (b) False
32. 32.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
33. 33.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
34. 34.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
35. 35.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) leaving out steel bars (c) fitting rubber base pads (d) building tall and narrow
36. 36.🏚️ 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 150 cm tall on a 30 cm base and tower C is 20 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
37. 37.🏚️ 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 150 cm tall on a 30 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
38. 38.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
39. 39.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) using a light roof (b) having a wide base (c) raising heavy tanks high (d) keeping a simple shape

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