Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 390 · 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.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 40 cm wide base, tower B is 160 cm tall on a 40 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
2. 2.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
3. 3.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using flexible joints (c) having a wide base (d) raising heavy tanks high
4. 4.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) stacking loose bricks (c) using flexible joints (d) using a light roof
5. 5.🏚️ 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
6. 6.True or false: making brittle joints makes a building safer in earthquakes. (a) True (b) False
7. 7.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) making brittle joints (b) using a light roof (c) using flexible joints (d) keeping a simple shape
9. 9.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
10. 10.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) leaving out steel bars (b) using a light roof (c) using a heavy roof (d) stacking loose bricks
12. 12.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
13. 13.🔍 Which is the odd one out? (a) using a light roof (b) raising heavy tanks high (c) using flexible joints (d) adding cross bracing
14. 14.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) fitting rubber base pads (c) raising heavy tanks high (d) using a heavy roof
15. 15.🏚️ 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 30 cm tall on a 10 cm base and tower C is 150 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
16. 16.🏚️ 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 60 cm tall on a 20 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 A (c) tower C
17. 17.🏚️ 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 30 cm tall on a 10 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 A (c) tower C
18. 18.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) keeping a simple shape (c) making brittle joints (d) having a wide base
19. 19.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) False (b) True
20. 20.True or false: building tall and narrow makes a building safer in earthquakes. (a) True (b) False
21. 21.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) using a light roof (c) leaving out steel bars (d) raising heavy tanks high
22. 22.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) having a wide base (c) raising heavy tanks high (d) leaving out steel bars
23. 23.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) building tall and narrow (c) keeping a simple shape (d) fitting rubber base pads
24. 24.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
25. 25.🏚️ Three solid model towers are made of the same material. Tower A is 20 cm tall on a 20 cm wide base, tower B is 20 cm tall on a 10 cm base and tower C is 160 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
26. 26.🏚️ Why is a wide base safer? (a) it is lighter (b) it is harder to tip over (c) it is colourful (d) it is taller
27. 27.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) True (b) False
28. 28.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) False (b) True
29. 29.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
30. 30.🔍 Which is the odd one out? (a) fitting rubber base pads (b) adding cross bracing (c) using flexible joints (d) stacking loose bricks
31. 31.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
32. 32.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) False (b) True
33. 33.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they stop shaking (c) they bend, not break (d) they look nice
34. 34.🏚️ 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 50 cm tall on a 10 cm base and tower C is 120 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
35. 35.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
36. 36.🔍 Which is the odd one out? (a) fitting rubber base pads (b) adding steel to concrete (c) keeping a simple shape (d) building tall and narrow
37. 37.True or false: stacking loose bricks makes a building safer in earthquakes. (a) True (b) False
38. 38.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 80 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
39. 39.🏚️ 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 50 cm tall on a 10 cm base and tower C is 240 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
40. 40.🏚️ 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 160 cm tall on a 40 cm base and tower C is 180 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B

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