Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 536 · 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 are flexible joints good in an earthquake? (a) they look nice (b) they are cheap (c) they bend, not break (d) they stop shaking
2. 2.🏚️ Why is a wide base safer? (a) it is colourful (b) it is taller (c) it is harder to tip over (d) it is lighter
3. 3.🏚️ 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 100 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
4. 4.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) leaving out steel bars (c) making brittle joints (d) fitting rubber base pads
5. 5.🏚️ Three solid model towers are made of the same material. Tower A is 140 cm tall on a 20 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 150 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
6. 6.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
7. 7.True or false: building tall and narrow makes a building less safe in earthquakes. (a) True (b) False
8. 8.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
9. 9.🏚️ 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 10 cm tall on a 10 cm base and tower C is 20 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
10. 10.🔍 Which is the odd one out? (a) using a light roof (b) keeping a simple shape (c) making brittle joints (d) adding steel to concrete
11. 11.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) building tall and narrow (c) using flexible joints (d) leaving out steel bars
12. 12.🏚️ 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
13. 13.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) True (b) False
14. 14.🏚️ 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 210 cm tall on a 30 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 C (c) tower A
15. 15.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) using a light roof (c) raising heavy tanks high (d) building tall and narrow
16. 16.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
17. 17.🔍 Which is the odd one out? (a) leaving out steel bars (b) having a wide base (c) keeping a simple shape (d) adding steel to concrete
18. 18.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a fridge (b) a microscope (c) a telescope (d) a shake table
19. 19.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) True (b) False
20. 20.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
21. 21.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) stacking loose bricks (c) leaving out steel bars (d) adding steel to concrete
22. 22.🔍 Which is the odd one out? (a) adding steel to concrete (b) having a wide base (c) using a heavy roof (d) using flexible joints
23. 23.🏚️ 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 20 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
24. 24.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) having a wide base (c) adding steel to concrete (d) leaving out steel bars
25. 25.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
26. 26.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
27. 27.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) adding steel to concrete (c) building tall and narrow (d) having a wide base
28. 28.True or false: making brittle joints makes a building safer in earthquakes. (a) False (b) True
29. 29.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
30. 30.🏚️ 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 200 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
31. 31.🏚️ Three solid model towers are made of the same material. Tower A is 100 cm tall on a 20 cm wide base, tower B is 60 cm tall on a 30 cm base and tower C is 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
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 240 cm tall on a 40 cm base and tower C is 30 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
33. 33.🔍 Which is the odd one out? (a) stacking loose bricks (b) using flexible joints (c) leaving out steel bars (d) using a heavy roof
34. 34.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using a heavy roof (c) leaving out steel bars (d) adding cross bracing
35. 35.🔍 Which is the odd one out? (a) building tall and narrow (b) stacking loose bricks (c) making brittle joints (d) using a light roof
36. 36.🔍 Which is the odd one out? (a) building tall and narrow (b) making brittle joints (c) having a wide base (d) leaving out steel bars
37. 37.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) True (b) False
38. 38.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
39. 39.🏚️ 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 80 cm tall on a 40 cm base and tower C is 10 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
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 140 cm tall on a 20 cm base and tower C is 60 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C

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