Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 110 · 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.True or false: having a wide base makes a building less safe in earthquakes. (a) True (b) False
2. 2.🏚️ 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 150 cm tall on a 30 cm base and tower C is 240 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
3. 3.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
4. 4.🔍 Which is the odd one out? (a) having a wide base (b) fitting rubber base pads (c) using a heavy roof (d) using flexible joints
5. 5.🏚️ Three solid model towers are made of the same material. Tower A is 50 cm tall on a 10 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 30 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
6. 6.🏚️ 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 120 cm tall on a 40 cm base and tower C is 240 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
7. 7.🏚️ 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 30 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
8. 8.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they look nice (c) they are cheap (d) they bend, not break
10. 10.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) on the very top (c) on a thin pole (d) hanging outside
11. 11.🏚️ 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 20 cm tall on a 10 cm base and tower C is 120 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
12. 12.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
13. 13.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) adding cross bracing (c) keeping a simple shape (d) building tall and narrow
14. 14.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
15. 15.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using flexible joints (c) keeping a simple shape (d) having a wide base
16. 16.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
17. 17.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) building tall and narrow (c) using a heavy roof (d) keeping a simple shape
18. 18.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) making brittle joints (b) adding cross bracing (c) using a heavy roof (d) leaving out steel bars
20. 20.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) raising heavy tanks high (c) having a wide base (d) stacking loose bricks
21. 21.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) leaving out steel bars (c) adding steel to concrete (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 80 cm tall on a 40 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
23. 23.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
24. 24.🏚️ 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 30 cm tall on a 10 cm base and tower C is 20 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
25. 25.🔍 Which is the odd one out? (a) making brittle joints (b) raising heavy tanks high (c) using a heavy roof (d) using flexible joints
26. 26.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) using a light roof (c) making brittle joints (d) adding steel to concrete
27. 27.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
28. 28.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) leaving out steel bars (c) using flexible joints (d) raising heavy tanks high
29. 29.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a shake table (c) a microscope (d) a telescope
30. 30.True or false: leaving out steel bars makes a building safer in earthquakes. (a) False (b) True
31. 31.🏚️ 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 20 cm tall on a 10 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
32. 32.🏚️ 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 20 cm tall on a 20 cm base and tower C is 30 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
33. 33.🏚️ 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 40 cm tall on a 10 cm base and tower C is 60 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
34. 34.🏚️ 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 40 cm tall on a 10 cm base and tower C is 180 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
35. 35.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) adding steel to concrete (c) leaving out steel bars (d) keeping a simple shape
36. 36.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
37. 37.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
38. 38.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) stacking loose bricks (c) using a light roof (d) making brittle joints
39. 39.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) fitting rubber base pads (b) adding cross bracing (c) using flexible joints (d) building tall and narrow

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