Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 538 · 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 look nice (b) they bend, not break (c) they stop shaking (d) they are cheap
2. 2.True or false: making brittle joints makes a building safer in earthquakes. (a) False (b) True
3. 3.🏚️ 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 10 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
4. 4.🏚️ Three solid model towers are made of the same material. Tower A is 180 cm tall on a 30 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 20 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
5. 5.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
6. 6.🔍 Which is the odd one out? (a) using a heavy roof (b) using flexible joints (c) making brittle joints (d) stacking loose bricks
7. 7.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 40 cm tall on a 40 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
8. 8.🔍 Which is the odd one out? (a) using a heavy roof (b) raising heavy tanks high (c) having a wide base (d) leaving out steel bars
9. 9.🔍 Which is the odd one out? (a) making brittle joints (b) adding steel to concrete (c) using flexible joints (d) adding cross bracing
10. 10.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) fitting rubber base pads (c) keeping a simple shape (d) raising heavy tanks high
11. 11.🏚️ Why is a wide base safer? (a) it is taller (b) it is harder to tip over (c) it is colourful (d) it is lighter
12. 12.🔍 Which is the odd one out? (a) adding cross bracing (b) having a wide base (c) stacking loose bricks (d) keeping a simple shape
13. 13.🏚️ 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
14. 14.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 30 cm wide base, tower B is 280 cm tall on a 40 cm base and tower C is 180 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
15. 15.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) stacking loose bricks (c) building tall and narrow (d) having a wide base
16. 16.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) stacking loose bricks (c) adding cross bracing (d) leaving out steel bars
17. 17.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a microscope (c) a telescope (d) a fridge
18. 18.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
19. 19.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
20. 20.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
21. 21.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) adding cross bracing (c) building tall and narrow (d) adding steel to concrete
22. 22.🔍 Which is the odd one out? (a) adding steel to concrete (b) using a heavy roof (c) adding cross bracing (d) fitting rubber base pads
23. 23.🏚️ 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 30 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 B (b) tower C (c) tower A
24. 24.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
25. 25.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
26. 26.🔍 Which is the odd one out? (a) making brittle joints (b) fitting rubber base pads (c) using a heavy roof (d) raising heavy tanks high
27. 27.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
28. 28.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) True (b) False
29. 29.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
30. 30.🔍 Which is the odd one out? (a) using a heavy roof (b) raising heavy tanks high (c) building tall and narrow (d) adding steel to concrete
31. 31.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
32. 32.🏚️ 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 120 cm tall on a 20 cm base and tower C is 120 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.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 30 cm wide base, tower B is 60 cm tall on a 10 cm base and tower C is 280 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
34. 34.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) stacking loose bricks (c) using flexible joints (d) adding steel to concrete
35. 35.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) False (b) True
36. 36.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 30 cm wide base, tower B is 180 cm tall on a 30 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
37. 37.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False
38. 38.True or false: using a heavy roof makes a building safer in earthquakes. (a) False (b) True
39. 39.🏚️ Three solid model towers are made of the same material. Tower A is 100 cm tall on a 20 cm wide base, tower B is 60 cm tall on a 10 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 A (c) tower C
40. 40.🏚️ 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 150 cm tall on a 30 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

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