Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 636 · 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.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
2. 2.🏚️ Why is a wide base safer? (a) it is taller (b) it is harder to tip over (c) it is colourful (d) it is lighter
3. 3.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) on a thin pole (c) hanging outside (d) low down
4. 4.🔍 Which is the odd one out? (a) adding steel to concrete (b) leaving out steel bars (c) building tall and narrow (d) raising heavy tanks high
5. 5.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
6. 6.True or false: using a heavy roof makes a building less safe in earthquakes. (a) True (b) False
7. 7.🏚️ 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 10 cm tall on a 10 cm base and tower C is 90 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
8. 8.🔍 Which is the odd one out? (a) adding cross bracing (b) using a heavy roof (c) having a wide base (d) keeping a simple shape
9. 9.Which of these makes a building safer in earthquakes? (a) having a wide base (b) leaving out steel bars (c) building tall and narrow (d) raising heavy tanks high
10. 10.🔍 Which is the odd one out? (a) having a wide base (b) stacking loose bricks (c) raising heavy tanks high (d) using a heavy roof
11. 11.🏚️ Does raising heavy tanks high 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 safer in earthquakes? (a) using a heavy roof (b) stacking loose bricks (c) building tall and narrow (d) keeping a simple shape
13. 13.🏚️ 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 100 cm tall on a 20 cm base and tower C is 20 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
14. 14.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
15. 15.🔍 Which is the odd one out? (a) fitting rubber base pads (b) adding steel to concrete (c) raising heavy tanks high (d) having a wide base
16. 16.🏚️ 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 60 cm tall on a 20 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 C (c) tower B
17. 17.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
18. 18.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 20 cm wide base, tower B is 180 cm tall on a 30 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
19. 19.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
20. 20.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
21. 21.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) making brittle joints (c) stacking loose bricks (d) adding steel to concrete
22. 22.🔍 Which is the odd one out? (a) making brittle joints (b) fitting rubber base pads (c) raising heavy tanks high (d) building tall and narrow
23. 23.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
24. 24.🔍 Which is the odd one out? (a) building tall and narrow (b) using a light roof (c) making brittle joints (d) raising heavy tanks high
25. 25.🏚️ 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
26. 26.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) using flexible joints (b) stacking loose bricks (c) keeping a simple shape (d) fitting rubber base pads
28. 28.True or false: stacking loose bricks makes a building less safe in earthquakes. (a) False (b) True
29. 29.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) stacking loose bricks (c) adding cross bracing (d) leaving out steel bars
30. 30.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
31. 31.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) using a light roof (c) having a wide base (d) leaving out steel bars
32. 32.🏚️ 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 150 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
33. 33.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 40 cm tall on a 10 cm base and tower C is 40 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
34. 34.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
35. 35.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 20 cm wide base, tower B is 40 cm tall on a 20 cm base and tower C is 40 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
36. 36.🏚️ 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 20 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
37. 37.True or false: keeping a simple shape makes a building safer in earthquakes. (a) True (b) False
38. 38.🏚️ Does adding steel to concrete 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 200 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 C (b) tower A (c) tower B
40. 40.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using a heavy roof (c) building tall and narrow (d) keeping a simple shape

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