Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 171 · 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 80 cm tall on a 20 cm wide base, tower B is 60 cm tall on a 10 cm base and tower C is 100 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
2. 2.🏚️ 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 160 cm tall on a 40 cm base and tower C is 120 cm tall on a 20 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 lighter (b) it is colourful (c) it is taller (d) it is harder to tip over
4. 4.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they stop shaking (c) they look nice (d) they bend, not break
5. 5.🔍 Which is the odd one out? (a) building tall and narrow (b) using a heavy roof (c) using flexible joints (d) raising heavy tanks high
6. 6.🏚️ 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 180 cm tall on a 30 cm base and tower C is 120 cm tall on a 40 cm base. Which is the hardest 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 80 cm tall on a 20 cm wide base, tower B is 60 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 B (b) tower C (c) tower A
8. 8.🔍 Which is the odd one out? (a) using a heavy roof (b) leaving out steel bars (c) adding cross bracing (d) stacking loose bricks
9. 9.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
10. 10.🏚️ 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 50 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 B (c) tower C
11. 11.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) keeping a simple shape (c) raising heavy tanks high (d) making brittle joints
12. 12.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True
13. 13.True or false: making brittle joints makes a building safer in earthquakes. (a) True (b) False
14. 14.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
15. 15.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
16. 16.Which of these makes a building less safe in earthquakes? (a) stacking loose bricks (b) having a wide base (c) using flexible joints (d) fitting rubber base pads
17. 17.Which of these makes a building safer in earthquakes? (a) adding cross bracing (b) using a heavy roof (c) leaving out steel bars (d) raising heavy tanks high
18. 18.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) having a wide base (c) using a light roof (d) leaving out steel bars
19. 19.🔍 Which is the odd one out? (a) fitting rubber base pads (b) raising heavy tanks high (c) leaving out steel bars (d) using a heavy roof
20. 20.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
21. 21.🔍 Which is the odd one out? (a) building tall and narrow (b) adding cross bracing (c) using flexible joints (d) using a light roof
22. 22.🏚️ Three solid model towers are made of the same material. Tower A is 70 cm tall on a 10 cm wide base, tower B is 160 cm tall on a 40 cm base and tower C is 120 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
23. 23.🏚️ 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
24. 24.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
25. 25.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
26. 26.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) having a wide base (c) making brittle joints (d) using a heavy roof
27. 27.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) building tall and narrow (c) using a light roof (d) having a wide base
28. 28.🔍 Which is the odd one out? (a) stacking loose bricks (b) using a light roof (c) raising heavy tanks high (d) building tall and narrow
29. 29.🔍 Which is the odd one out? (a) stacking loose bricks (b) having a wide base (c) making brittle joints (d) leaving out steel bars
30. 30.True or false: using a heavy roof makes a building safer in earthquakes. (a) False (b) True
31. 31.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) stacking loose bricks (b) raising heavy tanks high (c) using a heavy roof (d) adding steel to concrete
33. 33.🔍 Which is the odd one out? (a) adding cross bracing (b) leaving out steel bars (c) adding steel to concrete (d) using flexible joints
34. 34.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
35. 35.🔍 Which is the odd one out? (a) adding cross bracing (b) having a wide base (c) making brittle joints (d) fitting rubber base pads
36. 36.🔍 Which is the odd one out? (a) raising heavy tanks high (b) keeping a simple shape (c) adding cross bracing (d) having a wide base
37. 37.🏚️ 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 70 cm tall on a 10 cm base and tower C is 150 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
38. 38.🏚️ Three solid model towers are made of the same material. Tower A is 200 cm tall on a 40 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
39. 39.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
40. 40.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True

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