Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 69 · 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 look nice (b) they stop shaking (c) they are cheap (d) they bend, not break
2. 2.🔍 Which is the odd one out? (a) making brittle joints (b) fitting rubber base pads (c) stacking loose bricks (d) raising heavy tanks high
3. 3.True or false: having a wide base makes a building less safe in earthquakes. (a) True (b) False
4. 4.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.Which of these makes a building safer in earthquakes? (a) fitting rubber base pads (b) building tall and narrow (c) stacking loose bricks (d) using a heavy roof
6. 6.🔍 Which is the odd one out? (a) stacking loose bricks (b) raising heavy tanks high (c) building tall and narrow (d) having a wide base
7. 7.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) adding steel to concrete (c) having a wide base (d) raising heavy tanks high
8. 8.🏚️ 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 60 cm tall on a 30 cm base and tower C is 150 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
9. 9.🏚️ 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 240 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 A (b) tower C (c) tower B
10. 10.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) keeping a simple shape (b) using a light roof (c) using flexible joints (d) using a heavy roof
12. 12.🔍 Which is the odd one out? (a) having a wide base (b) keeping a simple shape (c) using flexible joints (d) raising heavy tanks high
13. 13.Which of these makes a building less safe in earthquakes? (a) making brittle joints (b) keeping a simple shape (c) fitting rubber base pads (d) adding steel to concrete
14. 14.🔍 Which is the odd one out? (a) using flexible joints (b) using a light roof (c) adding steel to concrete (d) making brittle joints
15. 15.🏚️ 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 80 cm tall on a 20 cm base and tower C is 10 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
16. 16.🔍 Which is the odd one out? (a) using a heavy roof (b) leaving out steel bars (c) keeping a simple shape (d) making brittle joints
17. 17.🏚️ Why is a wide base safer? (a) it is lighter (b) it is taller (c) it is harder to tip over (d) it is colourful
18. 18.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
19. 19.🏚️ 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 30 cm tall on a 10 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 A (c) tower B
20. 20.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
21. 21.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
22. 22.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
23. 23.True or false: making brittle joints makes a building safer in earthquakes. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) using flexible joints (b) having a wide base (c) fitting rubber base pads (d) building tall and narrow
25. 25.🏚️ 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 100 cm tall on a 20 cm base and tower C is 210 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
26. 26.Which of these makes a building less safe in earthquakes? (a) leaving out steel bars (b) using flexible joints (c) having a wide base (d) adding steel to concrete
27. 27.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
28. 28.Which of these makes a building less safe in earthquakes? (a) stacking loose bricks (b) having a wide base (c) keeping a simple shape (d) adding cross bracing
29. 29.🏚️ 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 120 cm tall on a 30 cm base and tower C is 40 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
30. 30.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) using flexible joints (c) leaving out steel bars (d) stacking loose bricks
31. 31.True or false: building tall and narrow makes a building safer in earthquakes. (a) True (b) False
32. 32.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) keeping a simple shape (c) leaving out steel bars (d) stacking loose bricks
33. 33.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
34. 34.🔍 Which is the odd one out? (a) adding cross bracing (b) having a wide base (c) stacking loose bricks (d) using flexible joints
35. 35.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
36. 36.True or false: using a light roof makes a building less safe in earthquakes. (a) False (b) True
37. 37.🏚️ 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 30 cm tall on a 10 cm base and tower C is 60 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
38. 38.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) leaving out steel bars (c) adding cross bracing (d) building tall and narrow
39. 39.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False
40. 40.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) on the very top (c) low down (d) hanging outside

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