Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 35 · 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 60 cm tall on a 20 cm wide base, tower B is 200 cm tall on a 40 cm base and tower C is 60 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
2. 2.🏚️ Why are flexible joints good in an earthquake? (a) they look nice (b) they are cheap (c) they stop shaking (d) they bend, not break
3. 3.🔍 Which is the odd one out? (a) using a heavy roof (b) making brittle joints (c) raising heavy tanks high (d) adding steel to concrete
4. 4.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
5. 5.🏚️ Three solid model towers are made of the same material. Tower A is 240 cm tall on a 40 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 100 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
6. 6.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) False (b) True
7. 7.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) adding steel to concrete (c) raising heavy tanks high (d) stacking loose bricks
8. 8.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.🏚️ 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 60 cm tall on a 20 cm base and tower C is 50 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
10. 10.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
11. 11.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
12. 12.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) False (b) True
13. 13.True or false: leaving out steel bars makes a building safer in earthquakes. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) having a wide base (b) adding cross bracing (c) making brittle joints (d) using flexible joints
15. 15.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
16. 16.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) using a heavy roof (b) using a light roof (c) fitting rubber base pads (d) keeping a simple shape
18. 18.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) hanging outside (c) on a thin pole (d) on the very top
19. 19.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) adding cross bracing (c) adding steel to concrete (d) stacking loose bricks
20. 20.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) True (b) False
21. 21.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) keeping a simple shape (c) making brittle joints (d) stacking loose bricks
22. 22.🏚️ 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 280 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
23. 23.🏚️ Why is a wide base safer? (a) it is colourful (b) it is taller (c) it is lighter (d) it is harder to tip over
24. 24.🏚️ 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 200 cm tall on a 40 cm base and tower C is 40 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
25. 25.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
26. 26.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) leaving out steel bars (c) raising heavy tanks high (d) using a light roof
27. 27.True or false: using a heavy roof makes a building safer in earthquakes. (a) False (b) True
28. 28.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) making brittle joints (c) using a light roof (d) keeping a simple shape
29. 29.🔍 Which is the odd one out? (a) using a heavy roof (b) using a light roof (c) leaving out steel bars (d) making brittle joints
30. 30.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) building tall and narrow (c) having a wide base (d) using flexible joints
31. 31.🔍 Which is the odd one out? (a) leaving out steel bars (b) using flexible joints (c) adding cross bracing (d) keeping a simple shape
32. 32.🔍 Which is the odd one out? (a) making brittle joints (b) leaving out steel bars (c) raising heavy tanks high (d) adding cross bracing
33. 33.🔍 Which is the odd one out? (a) leaving out steel bars (b) raising heavy tanks high (c) having a wide base (d) stacking loose bricks
34. 34.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) fitting rubber base pads (c) keeping a simple shape (d) raising heavy tanks high
35. 35.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) having a wide base (c) making brittle joints (d) stacking loose bricks
36. 36.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
37. 37.Which of these makes a building less safe in earthquakes? (a) using a heavy roof (b) having a wide base (c) fitting rubber base pads (d) adding steel to concrete
38. 38.🔍 Which is the odd one out? (a) having a wide base (b) keeping a simple shape (c) adding cross bracing (d) stacking loose bricks
39. 39.True or false: using a light roof makes a building safer in earthquakes. (a) False (b) True
40. 40.🏚️ Three solid model towers are made of the same material. Tower A is 160 cm tall on a 40 cm wide base, tower B is 40 cm tall on a 40 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 C (c) tower B

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