Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 360 · 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.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
3. 3.🏚️ 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 160 cm tall on a 40 cm base and tower C is 90 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
4. 4.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) raising heavy tanks high (c) adding cross bracing (d) using a light roof
5. 5.🏚️ 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 200 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 C (b) tower B (c) tower A
6. 6.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) stacking loose bricks (b) building tall and narrow (c) raising heavy tanks high (d) using flexible joints
8. 8.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.🔍 Which is the odd one out? (a) stacking loose bricks (b) using a heavy roof (c) raising heavy tanks high (d) adding cross bracing
10. 10.🏚️ Why is a wide base safer? (a) it is harder to tip over (b) it is lighter (c) it is taller (d) it is colourful
11. 11.🏚️ 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 120 cm tall on a 30 cm base and tower C is 40 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
12. 12.🏚️ 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 120 cm tall on a 30 cm base and tower C is 200 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
13. 13.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
14. 14.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) leaving out steel bars (c) using a heavy roof (d) fitting rubber base pads
15. 15.🔍 Which is the odd one out? (a) making brittle joints (b) adding cross bracing (c) having a wide base (d) using a light roof
16. 16.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) keeping a simple shape (c) leaving out steel bars (d) using a heavy roof
17. 17.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
18. 18.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
19. 19.🔍 Which is the odd one out? (a) stacking loose bricks (b) adding cross bracing (c) fitting rubber base pads (d) having a wide base
20. 20.🏚️ Where should heavy water tanks go in a quake zone? (a) on the very top (b) on a thin pole (c) hanging outside (d) low down
21. 21.Which of these makes a building safer in earthquakes? (a) having a wide base (b) stacking loose bricks (c) making brittle joints (d) using a heavy roof
22. 22.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 10 cm wide base, tower B is 40 cm tall on a 40 cm base and tower C is 60 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
23. 23.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
24. 24.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) using flexible joints (c) adding cross bracing (d) building tall and narrow
25. 25.🔍 Which is the odd one out? (a) adding steel to concrete (b) adding cross bracing (c) using a heavy roof (d) having a wide base
26. 26.🔍 Which is the odd one out? (a) adding steel to concrete (b) adding cross bracing (c) keeping a simple shape (d) building tall and narrow
27. 27.True or false: having a wide base makes a building safer in earthquakes. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) using flexible joints (b) adding steel to concrete (c) keeping a simple shape (d) leaving out steel bars
29. 29.True or false: having a wide base makes a building less safe in earthquakes. (a) True (b) False
30. 30.Which of these makes a building safer in earthquakes? (a) adding steel to concrete (b) using a heavy roof (c) raising heavy tanks high (d) building tall and narrow
31. 31.🏚️ 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 20 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
32. 32.🔍 Which is the odd one out? (a) fitting rubber base pads (b) using a light roof (c) using flexible joints (d) raising heavy tanks high
33. 33.🔍 Which is the odd one out? (a) leaving out steel bars (b) making brittle joints (c) building tall and narrow (d) adding steel to concrete
34. 34.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
35. 35.🏚️ 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 140 cm tall on a 20 cm base and tower C is 50 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
36. 36.🏚️ 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 200 cm tall on a 40 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
37. 37.Which of these makes a building less safe in earthquakes? (a) making brittle joints (b) using a light roof (c) adding cross bracing (d) keeping a simple shape
38. 38.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) False (b) True
39. 39.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) stacking loose bricks (c) building tall and narrow (d) using a light roof
40. 40.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes

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