Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 485 · 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 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 hardest to tip over? (a) tower A (b) tower B (c) tower C
2. 2.🔍 Which is the odd one out? (a) adding cross bracing (b) having a wide base (c) using a heavy roof (d) fitting rubber base pads
3. 3.True or false: having a wide base makes a building less safe in earthquakes. (a) False (b) True
4. 4.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) raising heavy tanks high (c) making brittle joints (d) adding cross bracing
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.🏚️ 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
7. 7.🔍 Which is the odd one out? (a) using flexible joints (b) stacking loose bricks (c) building tall and narrow (d) leaving out steel bars
8. 8.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
9. 9.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
10. 10.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) hanging outside (c) on the very top (d) on a thin pole
11. 11.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
12. 12.True or false: using a light roof makes a building safer in earthquakes. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) having a wide base (b) raising heavy tanks high (c) using a light roof (d) keeping a simple shape
14. 14.True or false: stacking loose bricks makes a building safer in earthquakes. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) adding steel to concrete (b) leaving out steel bars (c) raising heavy tanks high (d) stacking loose bricks
16. 16.🔍 Which is the odd one out? (a) leaving out steel bars (b) adding steel to concrete (c) using flexible joints (d) having a wide base
17. 17.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) leaving out steel bars (c) adding steel to concrete (d) using a heavy roof
18. 18.🔍 Which is the odd one out? (a) building tall and narrow (b) having a wide base (c) adding steel to concrete (d) keeping a simple shape
19. 19.🔍 Which is the odd one out? (a) stacking loose bricks (b) building tall and narrow (c) using a heavy roof (d) fitting rubber base pads
20. 20.🔍 Which is the odd one out? (a) using a heavy roof (b) using a light roof (c) raising heavy tanks high (d) building tall and narrow
21. 21.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) raising heavy tanks high (c) using a heavy roof (d) keeping a simple shape
22. 22.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
23. 23.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a fridge (c) a telescope (d) a shake table
24. 24.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
25. 25.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
26. 26.🏚️ 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 40 cm tall on a 10 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
27. 27.🏚️ 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 40 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
28. 28.🔍 Which is the odd one out? (a) building tall and narrow (b) having a wide base (c) leaving out steel bars (d) using a heavy roof
29. 29.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) raising heavy tanks high (c) fitting rubber base pads (d) making brittle joints
30. 30.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
31. 31.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
32. 32.🏚️ 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 40 cm tall on a 10 cm base and tower C is 30 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
33. 33.Which of these makes a building safer in earthquakes? (a) having a wide base (b) making brittle joints (c) building tall and narrow (d) using a heavy roof
34. 34.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
35. 35.🏚️ 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 30 cm tall on a 10 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
36. 36.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) making brittle joints (c) building tall and narrow (d) using a light roof
37. 37.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) using a heavy roof (c) adding cross bracing (d) having a wide base
38. 38.🔍 Which is the odd one out? (a) adding cross bracing (b) building tall and narrow (c) using a heavy roof (d) leaving out steel bars
39. 39.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) raising heavy tanks high (c) having a wide base (d) adding steel to concrete
40. 40.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) having a wide base (c) adding steel to concrete (d) making brittle joints

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