Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 573 · 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.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
2. 2.🏚️ Three solid model towers are made of the same material. Tower A is 80 cm tall on a 40 cm wide base, tower B is 20 cm tall on a 20 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
3. 3.True or false: stacking loose bricks makes a building less safe in earthquakes. (a) False (b) True
4. 4.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) on the very top (c) hanging outside (d) low down
6. 6.🔍 Which is the odd one out? (a) using flexible joints (b) adding cross bracing (c) fitting rubber base pads (d) building tall and narrow
7. 7.🔍 Which is the odd one out? (a) adding cross bracing (b) having a wide base (c) using a heavy roof (d) using flexible joints
8. 8.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
9. 9.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they are cheap (c) they stop shaking (d) they look nice
10. 10.🏚️ 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 120 cm tall on a 40 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
11. 11.🔍 Which is the odd one out? (a) adding steel to concrete (b) using a light roof (c) using flexible joints (d) stacking loose bricks
12. 12.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) adding steel to concrete (c) adding cross bracing (d) building tall and narrow
13. 13.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) making brittle joints (b) using flexible joints (c) having a wide base (d) fitting rubber base pads
15. 15.🔍 Which is the odd one out? (a) keeping a simple shape (b) using a light roof (c) having a wide base (d) leaving out steel bars
16. 16.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
17. 17.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) False (b) True
18. 18.🏚️ Does building tall and narrow 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 50 cm tall on a 10 cm base and tower C is 30 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
20. 20.🏚️ 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 120 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 B (b) tower C (c) tower A
21. 21.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
22. 22.🏚️ 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 120 cm tall on a 30 cm base and tower C is 80 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
23. 23.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) making brittle joints (b) raising heavy tanks high (c) fitting rubber base pads (d) leaving out steel bars
25. 25.Which of these makes a building safer in earthquakes? (a) having a wide base (b) leaving out steel bars (c) stacking loose bricks (d) raising heavy tanks high
26. 26.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
27. 27.🏚️ Three solid model towers are made of the same material. Tower A is 210 cm tall on a 30 cm wide base, tower B is 160 cm tall on a 40 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
28. 28.🔍 Which is the odd one out? (a) building tall and narrow (b) using a heavy roof (c) raising heavy tanks high (d) using a light roof
29. 29.True or false: having a wide base makes a building safer in earthquakes. (a) True (b) False
30. 30.🏚️ 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 140 cm tall on a 20 cm base and tower C is 50 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
31. 31.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a shake table (c) a microscope (d) a fridge
32. 32.🏚️ 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 120 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
33. 33.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) building tall and narrow (c) raising heavy tanks high (d) using flexible joints
34. 34.🔍 Which is the odd one out? (a) using a heavy roof (b) adding steel to concrete (c) building tall and narrow (d) stacking loose bricks
35. 35.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
36. 36.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) True (b) False
37. 37.True or false: building tall and narrow makes a building safer in earthquakes. (a) False (b) True
38. 38.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) stacking loose bricks (c) keeping a simple shape (d) using flexible joints
39. 39.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
40. 40.🏚️ 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 20 cm tall on a 10 cm base and tower C is 60 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B

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