Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 446 · 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 is the odd one out? (a) making brittle joints (b) raising heavy tanks high (c) using flexible joints (d) leaving out steel bars
2. 2.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
3. 3.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) leaving out steel bars (c) using a heavy roof (d) using flexible joints
4. 4.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.🏚️ 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
6. 6.🏚️ 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 120 cm tall on a 40 cm base and tower C is 40 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
7. 7.🔍 Which is the odd one out? (a) making brittle joints (b) leaving out steel bars (c) using a heavy roof (d) using a light roof
8. 8.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a telescope (b) a shake table (c) a microscope (d) a fridge
10. 10.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) building tall and narrow (b) using a heavy roof (c) making brittle joints (d) adding steel to concrete
12. 12.🏚️ 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 30 cm tall on a 10 cm base and tower C is 10 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
13. 13.Which of these makes a building safer in earthquakes? (a) adding cross bracing (b) leaving out steel bars (c) making brittle joints (d) using a heavy roof
14. 14.🔍 Which is the odd one out? (a) adding steel to concrete (b) stacking loose bricks (c) using flexible joints (d) fitting rubber base pads
15. 15.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) False (b) True
16. 16.True or false: using flexible joints makes a building less safe in earthquakes. (a) False (b) True
17. 17.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) fitting rubber base pads (c) stacking loose bricks (d) adding steel to concrete
18. 18.🔍 Which is the odd one out? (a) using a heavy roof (b) stacking loose bricks (c) keeping a simple shape (d) leaving out steel bars
19. 19.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) hanging outside (c) on a thin pole (d) low down
20. 20.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) adding steel to concrete (c) adding cross bracing (d) raising heavy tanks high
21. 21.🏚️ 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 60 cm tall on a 20 cm base and tower C is 40 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
22. 22.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
23. 23.🏚️ 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 80 cm tall on a 20 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
24. 24.🏚️ 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 40 cm tall on a 10 cm base and tower C is 60 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
25. 25.🏚️ 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 80 cm tall on a 20 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 B (c) tower C
26. 26.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
27. 27.Which of these makes a building safer in earthquakes? (a) using a light roof (b) stacking loose bricks (c) using a heavy roof (d) leaving out steel bars
28. 28.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) using a heavy roof (c) adding steel to concrete (d) having a wide base
29. 29.🔍 Which is the odd one out? (a) having a wide base (b) building tall and narrow (c) using flexible joints (d) fitting rubber base pads
30. 30.🔍 Which is the odd one out? (a) stacking loose bricks (b) using a heavy roof (c) raising heavy tanks high (d) fitting rubber base pads
31. 31.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) leaving out steel bars (c) keeping a simple shape (d) raising heavy tanks high
32. 32.🔍 Which is the odd one out? (a) adding steel to concrete (b) using flexible joints (c) raising heavy tanks high (d) adding cross bracing
33. 33.Which of these makes a building less safe in earthquakes? (a) building tall and narrow (b) adding steel to concrete (c) keeping a simple shape (d) using flexible joints
34. 34.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
35. 35.🏚️ 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
36. 36.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
37. 37.🏚️ 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 30 cm tall on a 10 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
38. 38.🏚️ 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 30 cm tall on a 30 cm base and tower C is 30 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
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 120 cm tall on a 40 cm base and tower C is 140 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
40. 40.True or false: stacking loose bricks makes a building less safe in earthquakes. (a) False (b) True

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