Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 244 · 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 less safe in earthquakes? (a) making brittle joints (b) adding cross bracing (c) using a light roof (d) having a wide base
2. 2.🔍 Which is the odd one out? (a) using flexible joints (b) raising heavy tanks high (c) using a light roof (d) fitting rubber base pads
3. 3.🏚️ Does leaving out steel bars 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) stacking loose bricks (b) making brittle joints (c) using a heavy roof (d) keeping a simple shape
5. 5.🏚️ 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 40 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 C (c) tower A
6. 6.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) making brittle joints (c) raising heavy tanks high (d) adding steel to concrete
7. 7.🏚️ 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
8. 8.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
10. 10.🔍 Which is the odd one out? (a) using a light roof (b) adding steel to concrete (c) adding cross bracing (d) building tall and narrow
11. 11.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) stacking loose bricks (c) adding cross bracing (d) having a wide base
12. 12.True or false: using a light roof makes a building less safe in earthquakes. (a) True (b) False
13. 13.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they bend, not break (c) they look nice (d) they are cheap
14. 14.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
15. 15.Which of these makes a building less safe in earthquakes? (a) leaving out steel bars (b) using a light roof (c) having a wide base (d) adding steel to concrete
16. 16.🔍 Which is the odd one out? (a) using a heavy roof (b) raising heavy tanks high (c) using a light roof (d) making brittle joints
17. 17.🔍 Which is the odd one out? (a) having a wide base (b) using a light roof (c) keeping a simple shape (d) leaving out steel bars
18. 18.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
19. 19.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
20. 20.🏚️ 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 60 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
21. 21.🏚️ 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 40 cm tall on a 20 cm base and tower C is 30 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
22. 22.True or false: adding cross bracing makes a building less safe in earthquakes. (a) False (b) True
23. 23.True or false: having a wide base makes a building less safe in earthquakes. (a) True (b) False
24. 24.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
25. 25.Which of these makes a building safer in earthquakes? (a) having a wide base (b) raising heavy tanks high (c) using a heavy roof (d) leaving out steel bars
26. 26.🔍 Which is the odd one out? (a) having a wide base (b) making brittle joints (c) keeping a simple shape (d) using flexible joints
27. 27.🏚️ 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 240 cm tall on a 40 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
28. 28.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using a heavy roof (c) keeping a simple shape (d) stacking loose bricks
29. 29.🏚️ 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 210 cm tall on a 30 cm base and tower C is 90 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
30. 30.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
31. 31.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
32. 32.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) using a light roof (c) building tall and narrow (d) leaving out steel bars
33. 33.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
34. 34.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) fitting rubber base pads (b) adding cross bracing (c) having a wide base (d) stacking loose bricks
36. 36.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
37. 37.🏚️ 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 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
38. 38.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
39. 39.🏚️ 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 100 cm tall on a 20 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
40. 40.🏚️ 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 50 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 B (b) tower C (c) tower A

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