Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 129 · 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) stacking loose bricks (b) leaving out steel bars (c) using a heavy roof (d) adding steel to concrete
2. 2.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) making brittle joints (c) building tall and narrow (d) keeping a simple shape
3. 3.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they stop shaking (c) they bend, not break (d) they are cheap
4. 4.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) having a wide base (c) making brittle joints (d) using flexible joints
5. 5.🏚️ 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
6. 6.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) adding steel to concrete (c) having a wide base (d) raising heavy tanks high
7. 7.🏚️ 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 20 cm tall on a 10 cm base and tower C is 10 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
8. 8.Which of these makes a building less safe in earthquakes? (a) using a heavy roof (b) using flexible joints (c) adding steel to concrete (d) having a wide base
9. 9.🔍 Which is the odd one out? (a) using flexible joints (b) leaving out steel bars (c) raising heavy tanks high (d) building tall and narrow
10. 10.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) stacking loose bricks (c) adding cross bracing (d) building tall and narrow
11. 11.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
12. 12.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) leaving out steel bars (c) using flexible joints (d) raising heavy tanks high
13. 13.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) keeping a simple shape (c) fitting rubber base pads (d) building tall and narrow
14. 14.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) having a wide base (c) using flexible joints (d) stacking loose bricks
15. 15.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) using a heavy roof (b) adding cross bracing (c) using flexible joints (d) having a wide base
17. 17.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
18. 18.🔍 Which is the odd one out? (a) stacking loose bricks (b) using a heavy roof (c) making brittle joints (d) having a wide base
19. 19.🔍 Which is the odd one out? (a) stacking loose bricks (b) making brittle joints (c) leaving out steel bars (d) adding cross bracing
20. 20.True or false: using flexible joints makes a building less safe in earthquakes. (a) True (b) False
21. 21.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a telescope (c) a shake table (d) a fridge
22. 22.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
23. 23.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
24. 24.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
25. 25.Which of these makes a building safer in earthquakes? (a) using a light roof (b) stacking loose bricks (c) making brittle joints (d) building tall and narrow
26. 26.🏚️ 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 10 cm tall on a 10 cm base and tower C is 150 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
27. 27.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
28. 28.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
29. 29.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using a heavy roof (c) building tall and narrow (d) having a wide base
30. 30.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
31. 31.🏚️ 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 180 cm tall on a 30 cm base and tower C is 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
32. 32.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) having a wide base (c) leaving out steel bars (d) adding steel to concrete
33. 33.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) using a heavy roof (b) stacking loose bricks (c) leaving out steel bars (d) fitting rubber base pads
35. 35.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
36. 36.🏚️ Why is a wide base safer? (a) it is lighter (b) it is harder to tip over (c) it is colourful (d) it is taller
37. 37.🏚️ 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 200 cm tall on a 40 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
38. 38.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) stacking loose bricks (c) adding steel to concrete (d) using a heavy roof
39. 39.🏚️ 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 150 cm tall on a 30 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 C (c) tower B
40. 40.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using flexible joints (c) adding steel to concrete (d) fitting rubber base pads

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