Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 362 · 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 light roof (b) leaving out steel bars (c) adding steel to concrete (d) having a wide base
2. 2.🔍 Which is the odd one out? (a) fitting rubber base pads (b) adding cross bracing (c) using a heavy roof (d) keeping a simple shape
3. 3.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
4. 4.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
5. 5.🏚️ 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 100 cm tall on a 20 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
6. 6.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) low down (c) on a thin pole (d) hanging outside
7. 7.🏚️ Why is a wide base safer? (a) it is colourful (b) it is lighter (c) it is taller (d) it is harder to tip over
8. 8.True or false: building tall and narrow makes a building safer in earthquakes. (a) True (b) False
9. 9.🏚️ 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 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
10. 10.🔍 Which is the odd one out? (a) fitting rubber base pads (b) building tall and narrow (c) leaving out steel bars (d) raising heavy tanks high
11. 11.🏚️ 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 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
12. 12.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) True (b) False
13. 13.True or false: using a heavy roof makes a building less safe in earthquakes. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) stacking loose bricks (b) keeping a simple shape (c) building tall and narrow (d) using a heavy roof
15. 15.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) having a wide base (c) adding cross bracing (d) building tall and narrow
16. 16.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) making brittle joints (c) leaving out steel bars (d) using flexible joints
17. 17.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
18. 18.🏚️ Three solid model towers are made of the same material. Tower A is 70 cm tall on a 10 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 50 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
19. 19.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) leaving out steel bars (c) building tall and narrow (d) fitting rubber base pads
20. 20.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) building tall and narrow (c) leaving out steel bars (d) using a light roof
21. 21.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a fridge (c) a microscope (d) a telescope
22. 22.True or false: using a light roof makes a building safer in earthquakes. (a) False (b) True
23. 23.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they stop shaking (c) they are cheap (d) they look nice
24. 24.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) having a wide base (c) adding cross bracing (d) using a heavy roof
25. 25.🔍 Which is the odd one out? (a) building tall and narrow (b) making brittle joints (c) stacking loose bricks (d) having a wide base
26. 26.🏚️ Three solid model towers are made of the same material. Tower A is 70 cm tall on a 10 cm wide base, tower B is 150 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 C (c) tower A
27. 27.🔍 Which is the odd one out? (a) adding cross bracing (b) keeping a simple shape (c) adding steel to concrete (d) building tall and narrow
28. 28.True or false: making brittle joints makes a building safer in earthquakes. (a) False (b) True
29. 29.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
30. 30.🔍 Which is the odd one out? (a) using a heavy roof (b) building tall and narrow (c) making brittle joints (d) adding steel to concrete
31. 31.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
32. 32.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) False (b) True
33. 33.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 30 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
34. 34.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) having a wide base (c) building tall and narrow (d) raising heavy tanks high
35. 35.🔍 Which is the odd one out? (a) using a light roof (b) keeping a simple shape (c) having a wide base (d) making brittle joints
36. 36.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
37. 37.🔍 Which is the odd one out? (a) leaving out steel bars (b) keeping a simple shape (c) having a wide base (d) fitting rubber base pads
38. 38.Which of these makes a building safer in earthquakes? (a) adding steel to concrete (b) building tall and narrow (c) leaving out steel bars (d) raising heavy tanks high
39. 39.🏚️ 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 90 cm tall on a 30 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.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) fitting rubber base pads (c) having a wide base (d) making brittle joints

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