Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 383 · 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.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
2. 2.🏚️ 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 210 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
3. 3.🏚️ Why is a wide base safer? (a) it is harder to tip over (b) it is colourful (c) it is taller (d) it is lighter
4. 4.🔍 Which is the odd one out? (a) having a wide base (b) using flexible joints (c) using a light roof (d) building tall and narrow
5. 5.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) making brittle joints (b) keeping a simple shape (c) using a heavy roof (d) leaving out steel bars
7. 7.🏚️ 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 20 cm tall on a 20 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
8. 8.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) making brittle joints (c) having a wide base (d) adding cross bracing
9. 9.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) having a wide base (c) building tall and narrow (d) raising heavy tanks high
10. 10.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using a light roof (c) raising heavy tanks high (d) adding steel to concrete
11. 11.🔍 Which is the odd one out? (a) adding cross bracing (b) fitting rubber base pads (c) making brittle joints (d) using flexible joints
12. 12.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) adding steel to concrete (c) fitting rubber base pads (d) leaving out steel bars
13. 13.🏚️ 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 60 cm tall on a 20 cm base and tower C is 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
14. 14.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) on a thin pole (c) hanging outside (d) on the very top
15. 15.🏚️ 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
16. 16.🔍 Which is the odd one out? (a) building tall and narrow (b) using a heavy roof (c) adding steel to concrete (d) stacking loose bricks
17. 17.🔍 Which is the odd one out? (a) using a heavy roof (b) having a wide base (c) making brittle joints (d) stacking loose bricks
18. 18.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
19. 19.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) making brittle joints (c) keeping a simple shape (d) stacking loose bricks
20. 20.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) building tall and narrow (c) using flexible joints (d) adding cross bracing
21. 21.🏚️ 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 20 cm tall on a 20 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 C (c) tower B
22. 22.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) leaving out steel bars (c) making brittle joints (d) adding cross bracing
23. 23.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
24. 24.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
25. 25.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) True (b) False
26. 26.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) using a heavy roof (b) leaving out steel bars (c) using flexible joints (d) making brittle joints
28. 28.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 60 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.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) building tall and narrow (c) leaving out steel bars (d) using a light roof
30. 30.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
31. 31.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
32. 32.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False
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 30 cm tall on a 10 cm wide base, tower B is 60 cm tall on a 10 cm base and tower C is 200 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.🏚️ 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 120 cm tall on a 30 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest 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 120 cm tall on a 20 cm wide base, tower B is 40 cm tall on a 10 cm base and tower C is 200 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
37. 37.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) leaving out steel bars (c) fitting rubber base pads (d) stacking loose bricks
38. 38.🏚️ Three solid model towers are made of the same material. Tower A is 10 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 40 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
39. 39.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
40. 40.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe

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