Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 376 · 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.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they bend, not break (c) they stop shaking (d) they look nice
2. 2.🏚️ Why is a wide base safer? (a) it is lighter (b) it is colourful (c) it is harder to tip over (d) it is taller
3. 3.🏚️ 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 10 cm tall on a 10 cm base and tower C is 20 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
4. 4.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.🏚️ 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 70 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 A (b) tower C (c) tower B
6. 6.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
7. 7.🔍 Which is the odd one out? (a) stacking loose bricks (b) keeping a simple shape (c) having a wide base (d) adding steel to concrete
8. 8.🔍 Which is the odd one out? (a) stacking loose bricks (b) leaving out steel bars (c) adding steel to concrete (d) making brittle joints
9. 9.🏚️ 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 80 cm tall on a 40 cm base and tower C is 30 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
10. 10.True or false: making brittle joints makes a building safer in earthquakes. (a) True (b) False
11. 11.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) having a wide base (c) raising heavy tanks high (d) adding cross bracing
12. 12.🏚️ 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 80 cm tall on a 20 cm base and tower C is 180 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
13. 13.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
14. 14.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) leaving out steel bars (c) using a heavy roof (d) fitting rubber base pads
15. 15.🏚️ 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 200 cm tall on a 40 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 B (c) tower C
16. 16.Which of these makes a building less safe in earthquakes? (a) leaving out steel bars (b) using a light roof (c) fitting rubber base pads (d) using flexible joints
17. 17.🔍 Which is the odd one out? (a) using a heavy roof (b) fitting rubber base pads (c) raising heavy tanks high (d) leaving out steel bars
18. 18.True or false: using a light roof makes a building less safe in earthquakes. (a) True (b) False
19. 19.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
20. 20.🔍 Which is the odd one out? (a) using flexible joints (b) adding cross bracing (c) making brittle joints (d) keeping a simple shape
21. 21.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a microscope (c) a telescope (d) a shake table
22. 22.🔍 Which is the odd one out? (a) using a light roof (b) having a wide base (c) adding cross bracing (d) raising heavy tanks high
23. 23.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) making brittle joints (c) leaving out steel bars (d) adding cross bracing
24. 24.🏚️ 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 240 cm tall on a 40 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
25. 25.🔍 Which is the odd one out? (a) adding steel to concrete (b) having a wide base (c) leaving out steel bars (d) fitting rubber base pads
26. 26.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
27. 27.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
28. 28.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
29. 29.🔍 Which is the odd one out? (a) adding steel to concrete (b) fitting rubber base pads (c) using flexible joints (d) building tall and narrow
30. 30.🔍 Which is the odd one out? (a) raising heavy tanks high (b) leaving out steel bars (c) using a light roof (d) using a heavy roof
31. 31.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) adding cross bracing (c) using a heavy roof (d) having a wide base
32. 32.True or false: adding steel to concrete makes a building safer in earthquakes. (a) False (b) True
33. 33.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) making brittle joints (c) using a light roof (d) adding cross bracing
34. 34.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) using a light roof (c) stacking loose bricks (d) adding cross bracing
35. 35.🔍 Which is the odd one out? (a) building tall and narrow (b) stacking loose bricks (c) using flexible joints (d) making brittle joints
36. 36.🏚️ 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
37. 37.🏚️ 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 120 cm tall on a 30 cm base and tower C is 20 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
38. 38.🏚️ 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 180 cm tall on a 30 cm base and tower C is 40 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
39. 39.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) leaving out steel bars (c) stacking loose bricks (d) adding steel to concrete
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 100 cm tall on a 20 cm base and tower C is 120 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C

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