Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 831 · 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.🏚️ Why is a wide base safer? (a) it is taller (b) it is colourful (c) it is harder to tip over (d) it is lighter
2. 2.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) stacking loose bricks
3. 3.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) fitting rubber base pads (c) stacking loose bricks (d) adding cross bracing
4. 4.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) using a light roof (c) leaving out steel bars (d) adding steel to concrete
5. 5.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a telescope (c) a microscope (d) a shake table
6. 6.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) True (b) False
7. 7.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
8. 8.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) False (b) True
9. 9.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
10. 10.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
11. 11.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
12. 12.🏚️ 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 120 cm tall on a 40 cm base and tower C is 20 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
13. 13.🏚️ 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 40 cm tall on a 40 cm base and tower C is 20 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
14. 14.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) using a light roof
15. 15.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
16. 16.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
17. 17.🔍 Which is the odd one out? (a) using a heavy roof (b) adding steel to concrete (c) using a light roof (d) fitting rubber base pads
18. 18.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
19. 19.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they stop shaking (c) they look nice (d) they are cheap
20. 20.True or false: leaving out steel bars makes a building safer in earthquakes. (a) False (b) True
21. 21.🏚️ 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 40 cm tall on a 10 cm base and tower C is 240 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
22. 22.True or false: adding steel to concrete makes a building safer in earthquakes. (a) False (b) True
23. 23.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
24. 24.True or false: adding cross bracing makes a building less safe in earthquakes. (a) False (b) True
25. 25.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) raising heavy tanks high (c) adding cross bracing (d) adding steel to concrete
26. 26.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
27. 27.🔍 Which is the odd one out? (a) adding steel to concrete (b) raising heavy tanks high (c) having a wide base (d) using a light roof
28. 28.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
29. 29.🔍 Which is the odd one out? (a) using flexible joints (b) raising heavy tanks high (c) building tall and narrow (d) leaving out steel bars
30. 30.🏚️ 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 60 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 B (b) tower A (c) tower C
31. 31.Which of these makes a building safer in earthquakes? (a) using a light roof (b) making brittle joints (c) using a heavy roof (d) raising heavy tanks high
32. 32.🏚️ 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 280 cm tall on a 40 cm base and tower C is 90 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
33. 33.🏚️ 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 hardest to tip over? (a) tower B (b) tower A (c) tower C
34. 34.🏚️ 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 40 cm tall on a 20 cm base and tower C is 10 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
35. 35.🏚️ 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 20 cm base and tower C is 40 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
36. 36.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) using a heavy roof (c) using a light roof (d) adding cross bracing
37. 37.🏚️ 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 60 cm tall on a 10 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
38. 38.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on the very top (c) low down (d) on a thin pole
39. 39.🏚️ Three solid model towers are made of the same material. Tower A is 20 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 C (b) tower B (c) tower A
40. 40.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) using a heavy roof (c) adding steel to concrete (d) stacking loose bricks

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