Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 318 · 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) using a heavy roof (b) having a wide base (c) keeping a simple shape (d) using flexible joints
2. 2.🔍 Which is the odd one out? (a) using flexible joints (b) fitting rubber base pads (c) leaving out steel bars (d) adding cross bracing
3. 3.🏚️ 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
4. 4.🔍 Which is the odd one out? (a) fitting rubber base pads (b) stacking loose bricks (c) using flexible joints (d) having a wide base
5. 5.🏚️ 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 80 cm tall on a 40 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
6. 6.🔍 Which is the odd one out? (a) having a wide base (b) using flexible joints (c) keeping a simple shape (d) raising heavy tanks high
7. 7.Which of these makes a building less safe in earthquakes? (a) raising heavy tanks high (b) keeping a simple shape (c) adding cross bracing (d) using flexible joints
8. 8.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) low down (c) hanging outside (d) on the very top
9. 9.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
10. 10.🏚️ 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 30 cm tall on a 30 cm base and tower C is 60 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
11. 11.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
12. 12.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
13. 13.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
14. 14.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a telescope (c) a fridge (d) a microscope
15. 15.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) adding cross bracing (c) having a wide base (d) stacking loose bricks
16. 16.🏚️ 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 60 cm tall on a 10 cm base and tower C is 200 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
17. 17.🏚️ 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 40 cm tall on a 20 cm base and tower C is 60 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
18. 18.🔍 Which is the odd one out? (a) making brittle joints (b) keeping a simple shape (c) building tall and narrow (d) raising heavy tanks high
19. 19.True or false: having a wide base makes a building less safe in earthquakes. (a) True (b) False
20. 20.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
21. 21.🏚️ 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 30 cm tall on a 10 cm base and tower C is 40 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
22. 22.True or false: using a heavy roof makes a building safer in earthquakes. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) making brittle joints (b) building tall and narrow (c) adding steel to concrete (d) using a heavy roof
24. 24.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) using a heavy roof (c) raising heavy tanks high (d) adding cross bracing
25. 25.True or false: stacking loose bricks makes a building less safe in earthquakes. (a) False (b) True
26. 26.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
27. 27.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) using a heavy roof (c) stacking loose bricks (d) keeping a simple shape
28. 28.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
29. 29.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) adding steel to concrete (c) building tall and narrow (d) raising heavy tanks high
30. 30.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
31. 31.🏚️ 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 50 cm tall on a 10 cm base and tower C is 120 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
32. 32.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
33. 33.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) using flexible joints (c) stacking loose bricks (d) raising heavy tanks high
34. 34.🔍 Which is the odd one out? (a) having a wide base (b) adding cross bracing (c) using flexible joints (d) building tall and narrow
35. 35.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) stacking loose bricks (c) having a wide base (d) using a heavy roof
36. 36.🔍 Which is the odd one out? (a) having a wide base (b) adding cross bracing (c) making brittle joints (d) keeping a simple shape
37. 37.🏚️ 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 100 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 A (c) tower B
38. 38.🏚️ Three solid model towers are made of the same material. Tower A is 140 cm tall on a 20 cm wide base, tower B is 40 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
39. 39.🏚️ 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 240 cm tall on a 40 cm base and tower C is 210 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
40. 40.🏚️ Why is a wide base safer? (a) it is lighter (b) it is taller (c) it is colourful (d) it is harder to tip over

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