Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 553 · 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 of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) raising heavy tanks high (c) having a wide base (d) using flexible joints
2. 2.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
3. 3.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they stop shaking (c) they are cheap (d) they look nice
4. 4.🔍 Which is the odd one out? (a) fitting rubber base pads (b) adding steel to concrete (c) using flexible joints (d) building tall and narrow
5. 5.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) having a wide base (c) stacking loose bricks (d) adding cross bracing
6. 6.🏚️ 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
7. 7.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using a heavy roof (c) building tall and narrow (d) fitting rubber base pads
8. 8.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
9. 9.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 40 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 20 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
10. 10.🔍 Which is the odd one out? (a) building tall and narrow (b) using a heavy roof (c) leaving out steel bars (d) adding steel to concrete
11. 11.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) using flexible joints (c) raising heavy tanks high (d) making brittle joints
12. 12.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
13. 13.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
14. 14.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) leaving out steel bars (b) having a wide base (c) keeping a simple shape (d) adding cross bracing
16. 16.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
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.🏚️ 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 60 cm tall on a 20 cm base and tower C is 240 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
19. 19.Which of these makes a building less safe in earthquakes? (a) using a heavy roof (b) using a light roof (c) fitting rubber base pads (d) using flexible joints
20. 20.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
21. 21.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) having a wide base (c) keeping a simple shape (d) making brittle joints
22. 22.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) True (b) False
23. 23.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) True (b) False
24. 24.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) raising heavy tanks high (c) adding steel to concrete (d) building tall and narrow
25. 25.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on the very top (c) on a thin pole (d) low down
26. 26.🏚️ 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 30 cm tall on a 30 cm base and tower C is 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
27. 27.🏚️ 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 40 cm tall on a 10 cm base and tower C is 30 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
28. 28.🏚️ 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 20 cm base and tower C is 20 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
29. 29.🏚️ 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 20 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 A (c) tower C
30. 30.🔍 Which is the odd one out? (a) raising heavy tanks high (b) having a wide base (c) using a heavy roof (d) stacking loose bricks
31. 31.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) False (b) True
32. 32.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
33. 33.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) making brittle joints (c) adding cross bracing (d) leaving out steel bars
34. 34.🏚️ 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 240 cm tall on a 40 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
35. 35.🔍 Which is the odd one out? (a) adding cross bracing (b) making brittle joints (c) adding steel to concrete (d) having a wide base
36. 36.True or false: using a light roof makes a building safer in earthquakes. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) leaving out steel bars (b) building tall and narrow (c) using a heavy roof (d) adding cross bracing
38. 38.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
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 70 cm tall on a 10 cm base and tower C is 240 cm tall on a 40 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) using a heavy roof (b) leaving out steel bars (c) stacking loose bricks (d) keeping a simple shape

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