Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 517 · 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.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
2. 2.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
3. 3.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they bend, not break (c) they are cheap (d) they look nice
4. 4.🔍 Which is the odd one out? (a) using a heavy roof (b) building tall and narrow (c) keeping a simple shape (d) leaving out steel bars
5. 5.🔍 Which is the odd one out? (a) using a heavy roof (b) having a wide base (c) building tall and narrow (d) making brittle joints
6. 6.True or false: having a wide base makes a building safer in earthquakes. (a) True (b) False
7. 7.🏚️ 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 140 cm tall on a 20 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 A (c) tower B
8. 8.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) True (b) False
9. 9.True or false: leaving out steel bars makes a building safer in earthquakes. (a) False (b) True
10. 10.🏚️ Three solid model towers are made of the same material. Tower A is 20 cm tall on a 10 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
11. 11.🔍 Which is the odd one out? (a) adding steel to concrete (b) using a heavy roof (c) raising heavy tanks high (d) stacking loose bricks
12. 12.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using a light roof (c) fitting rubber base pads (d) having a wide base
13. 13.🔍 Which is the odd one out? (a) keeping a simple shape (b) using a heavy roof (c) having a wide base (d) using flexible joints
14. 14.🏚️ 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 150 cm tall on a 30 cm base and tower C is 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
15. 15.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
16. 16.🏚️ 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 40 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 A (b) tower B (c) tower C
17. 17.🔍 Which is the odd one out? (a) building tall and narrow (b) leaving out steel bars (c) using a light roof (d) using a heavy roof
18. 18.True or false: using a heavy roof makes a building less safe in earthquakes. (a) False (b) True
19. 19.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
20. 20.🏚️ 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 20 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 B (c) tower C
21. 21.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a telescope (c) a microscope (d) a fridge
22. 22.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) leaving out steel bars (c) making brittle joints (d) having a wide base
23. 23.🏚️ 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 240 cm tall on a 40 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
24. 24.🔍 Which is the odd one out? (a) keeping a simple shape (b) making brittle joints (c) adding steel to concrete (d) adding cross bracing
25. 25.🔍 Which is the odd one out? (a) using a heavy roof (b) using flexible joints (c) making brittle joints (d) building tall and narrow
26. 26.True or false: making brittle joints makes a building less safe in earthquakes. (a) False (b) True
27. 27.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
28. 28.Which of these makes a building safer in earthquakes? (a) using flexible joints (b) making brittle joints (c) raising heavy tanks high (d) building tall and narrow
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.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) using a heavy roof (c) keeping a simple shape (d) having a wide base
31. 31.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
32. 32.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
33. 33.🔍 Which is the odd one out? (a) making brittle joints (b) building tall and narrow (c) adding cross bracing (d) leaving out steel bars
34. 34.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) raising heavy tanks high (c) using flexible joints (d) fitting rubber base pads
35. 35.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) making brittle joints (c) using a light roof (d) adding cross bracing
36. 36.True or false: raising heavy tanks high makes a building less safe in earthquakes. (a) True (b) False
37. 37.True or false: stacking loose bricks makes a building less safe in earthquakes. (a) False (b) True
38. 38.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) building tall and narrow (c) fitting rubber base pads (d) using flexible joints
39. 39.🏚️ Three solid model towers are made of the same material. Tower A is 10 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
40. 40.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 200 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C

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