Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 754 · 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.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
2. 2.🏚️ 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 80 cm tall on a 40 cm base and tower C is 10 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
3. 3.True or false: making brittle joints makes a building less safe in earthquakes. (a) False (b) True
4. 4.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they look nice (c) they bend, not break (d) they are cheap
6. 6.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a telescope (c) a fridge (d) a microscope
7. 7.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
8. 8.🏚️ Three solid model towers are made of the same material. Tower A is 280 cm tall on a 40 cm wide base, tower B is 100 cm tall on a 20 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
9. 9.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
10. 10.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
11. 11.🔍 Which is the odd one out? (a) using a heavy roof (b) stacking loose bricks (c) building tall and narrow (d) using a light roof
12. 12.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
13. 13.🏚️ Does having a wide base 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 less safe in earthquakes? (a) leaving out steel bars (b) using flexible joints (c) using a light roof (d) fitting rubber base pads
15. 15.True or false: using a heavy roof makes a building safer in earthquakes. (a) False (b) True
16. 16.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) adding cross bracing (c) keeping a simple shape (d) using a heavy roof
17. 17.🔍 Which is the odd one out? (a) keeping a simple shape (b) making brittle joints (c) adding steel to concrete (d) using a light roof
18. 18.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) using a light roof (c) fitting rubber base pads (d) building tall and narrow
19. 19.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) on a thin pole (c) on the very top (d) hanging outside
20. 20.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) using a heavy roof (c) adding cross bracing (d) stacking loose bricks
21. 21.🔍 Which is the odd one out? (a) using flexible joints (b) adding cross bracing (c) having a wide base (d) building tall and narrow
22. 22.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) True (b) False
23. 23.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
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 150 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 A (b) tower B (c) tower C
25. 25.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
26. 26.🏚️ 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 20 cm tall on a 10 cm base and tower C is 100 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
27. 27.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) using a heavy roof (c) making brittle joints (d) using a light roof
28. 28.True or false: making brittle joints makes a building safer in earthquakes. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) using a heavy roof (b) keeping a simple shape (c) fitting rubber base pads (d) using flexible joints
30. 30.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) building tall and narrow (c) adding steel to concrete (d) making brittle joints
31. 31.🏚️ Three solid model towers are made of the same material. Tower A is 20 cm tall on a 10 cm wide base, tower B is 120 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 C (c) tower A
32. 32.🏚️ Three solid model towers are made of the same material. Tower A is 20 cm tall on a 10 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
33. 33.True or false: stacking loose bricks makes a building safer in earthquakes. (a) False (b) True
34. 34.🏚️ 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 50 cm tall on a 10 cm base and tower C is 80 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
35. 35.🏚️ 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 40 cm tall on a 40 cm base and tower C is 90 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
36. 36.🏚️ Why is a wide base safer? (a) it is taller (b) it is colourful (c) it is harder to tip over (d) it is lighter
37. 37.🔍 Which is the odd one out? (a) leaving out steel bars (b) stacking loose bricks (c) fitting rubber base pads (d) raising heavy tanks high
38. 38.🏚️ Three solid model towers are made of the same material. Tower A is 160 cm tall on a 40 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 70 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
39. 39.🏚️ 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 120 cm tall on a 30 cm base and tower C is 60 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
40. 40.🔍 Which is the odd one out? (a) adding steel to concrete (b) using flexible joints (c) keeping a simple shape (d) raising heavy tanks high

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