Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 886 · 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 stop shaking (b) they are cheap (c) they look nice (d) they bend, not break
2. 2.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) on the very top (c) hanging outside (d) on a thin pole
3. 3.🏚️ 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 150 cm tall on a 30 cm base and tower C is 60 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
4. 4.🔍 Which is the odd one out? (a) keeping a simple shape (b) raising heavy tanks high (c) using flexible joints (d) adding steel to concrete
5. 5.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
6. 6.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
7. 7.🏚️ Three solid model towers are made of the same material. Tower A is 120 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 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
8. 8.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) building tall and narrow (c) using flexible joints (d) adding cross bracing
9. 9.True or false: using a heavy roof makes a building less safe in earthquakes. (a) True (b) False
10. 10.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) using a light roof (c) using a heavy roof (d) building tall and narrow
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.True or false: using a light roof makes a building safer in earthquakes. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) making brittle joints (b) stacking loose bricks (c) adding cross bracing (d) raising heavy tanks high
14. 14.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) stacking loose bricks (b) making brittle joints (c) using a heavy roof (d) fitting rubber base pads
16. 16.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
17. 17.Which of these makes a building less safe in earthquakes? (a) making brittle joints (b) adding steel to concrete (c) fitting rubber base pads (d) using flexible joints
18. 18.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
19. 19.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
20. 20.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
21. 21.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
22. 22.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
23. 23.Which of these makes a building safer in earthquakes? (a) adding steel to concrete (b) using a heavy roof (c) building tall and narrow (d) stacking loose bricks
24. 24.True or false: leaving out steel bars makes a building safer in earthquakes. (a) False (b) True
25. 25.True or false: making brittle joints makes a building less safe in earthquakes. (a) False (b) True
26. 26.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a fridge (c) a telescope (d) a shake table
27. 27.🏚️ 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 40 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
28. 28.🔍 Which is the odd one out? (a) building tall and narrow (b) leaving out steel bars (c) adding steel to concrete (d) making brittle joints
29. 29.🔍 Which is the odd one out? (a) using a heavy roof (b) fitting rubber base pads (c) having a wide base (d) adding cross bracing
30. 30.🏚️ Three solid model towers are made of the same material. Tower A is 150 cm tall on a 30 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 140 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
31. 31.🔍 Which is the odd one out? (a) using flexible joints (b) using a light roof (c) having a wide base (d) stacking loose bricks
32. 32.True or false: having a wide base makes a building safer in earthquakes. (a) True (b) False
33. 33.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) using flexible joints (c) raising heavy tanks high (d) fitting rubber base pads
34. 34.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) raising heavy tanks high (c) adding cross bracing (d) building tall and narrow
35. 35.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
36. 36.🏚️ 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 200 cm tall on a 40 cm base and tower C is 280 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
37. 37.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) building tall and narrow (c) raising heavy tanks high (d) keeping a simple shape
38. 38.🔍 Which is the odd one out? (a) raising heavy tanks high (b) building tall and narrow (c) leaving out steel bars (d) using a light roof
39. 39.🏚️ 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 140 cm tall on a 20 cm base and tower C is 150 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
40. 40.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) having a wide base (c) using a heavy roof (d) using flexible joints

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