Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 19 · 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.🏚️ 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 30 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
2. 2.🏚️ Three solid model towers are made of the same material. Tower A is 180 cm tall on a 30 cm wide base, tower B is 160 cm tall on a 40 cm base and tower C is 80 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
3. 3.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) hanging outside (c) low down (d) on the very top
4. 4.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) keeping a simple shape (c) stacking loose bricks (d) adding steel to concrete
5. 5.🔍 Which is the odd one out? (a) building tall and narrow (b) making brittle joints (c) raising heavy tanks high (d) keeping a simple shape
6. 6.Which of these makes a building less safe in earthquakes? (a) making brittle joints (b) fitting rubber base pads (c) adding cross bracing (d) adding steel to concrete
7. 7.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
8. 8.🏚️ 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 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
9. 9.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) keeping a simple shape (c) raising heavy tanks high (d) using a heavy roof
10. 10.🔍 Which is the odd one out? (a) using flexible joints (b) using a heavy roof (c) adding steel to concrete (d) fitting rubber base pads
11. 11.Which of these makes a building safer in earthquakes? (a) using flexible joints (b) stacking loose bricks (c) leaving out steel bars (d) using a heavy roof
12. 12.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) raising heavy tanks high (c) adding cross bracing (d) building tall and narrow
13. 13.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) using a light roof (c) adding cross bracing (d) building tall and narrow
14. 14.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
15. 15.🏚️ 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 80 cm tall on a 20 cm base and tower C is 30 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
16. 16.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
17. 17.🏚️ Does adding steel to concrete 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) fitting rubber base pads (b) keeping a simple shape (c) leaving out steel bars (d) using flexible joints
19. 19.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 30 cm wide base, tower B is 60 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 C (b) tower A (c) tower B
20. 20.🏚️ 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 40 cm tall on a 40 cm base and tower C is 160 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
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 having a wide base 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 less safe in earthquakes? (a) using a light roof (b) using a heavy roof (c) keeping a simple shape (d) using flexible joints
24. 24.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
25. 25.🔍 Which is the odd one out? (a) making brittle joints (b) leaving out steel bars (c) having a wide base (d) using a heavy roof
26. 26.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
27. 27.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
28. 28.🏚️ 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 120 cm tall on a 30 cm base and tower C is 60 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
29. 29.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they bend, not break (c) they stop shaking (d) they are cheap
30. 30.True or false: stacking loose bricks makes a building safer in earthquakes. (a) False (b) True
31. 31.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) using a heavy roof (b) adding steel to concrete (c) raising heavy tanks high (d) leaving out steel bars
33. 33.True or false: building tall and narrow makes a building safer in earthquakes. (a) True (b) False
34. 34.🏚️ 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 100 cm tall on a 20 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
35. 35.🔍 Which is the odd one out? (a) using a light roof (b) building tall and narrow (c) stacking loose bricks (d) using a heavy roof
36. 36.🏚️ 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 60 cm tall on a 20 cm base and tower C is 100 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
37. 37.🔍 Which is the odd one out? (a) leaving out steel bars (b) raising heavy tanks high (c) making brittle joints (d) fitting rubber base pads
38. 38.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
39. 39.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) raising heavy tanks high (c) fitting rubber base pads (d) making brittle joints
40. 40.🏚️ 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 40 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 A (b) tower B (c) tower C

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