Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 665 · 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 40 cm tall on a 10 cm wide base, tower B is 50 cm tall on a 10 cm base and tower C is 70 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
2. 2.🔍 Which is the odd one out? (a) building tall and narrow (b) using flexible joints (c) using a light roof (d) adding cross bracing
3. 3.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
4. 4.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
5. 5.True or false: building tall and narrow makes a building less safe in earthquakes. (a) False (b) True
6. 6.🏚️ 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 60 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
7. 7.True or false: fitting rubber base pads makes a building safer in earthquakes. (a) True (b) False
8. 8.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
9. 9.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
10. 10.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
11. 11.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a fridge (c) a telescope (d) a shake table
12. 12.🏚️ 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 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
13. 13.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) using flexible joints (c) building tall and narrow (d) adding cross bracing
14. 14.🔍 Which is the odd one out? (a) adding cross bracing (b) leaving out steel bars (c) using flexible joints (d) keeping a simple shape
15. 15.🏚️ 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 160 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 C (b) tower B (c) tower A
16. 16.🔍 Which is the odd one out? (a) using flexible joints (b) raising heavy tanks high (c) leaving out steel bars (d) building tall and narrow
17. 17.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
18. 18.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) keeping a simple shape (c) adding steel to concrete (d) using a heavy roof
19. 19.🏚️ 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 40 cm tall on a 40 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
20. 20.🔍 Which is the odd one out? (a) using a heavy roof (b) making brittle joints (c) building tall and narrow (d) adding cross bracing
21. 21.🔍 Which is the odd one out? (a) raising heavy tanks high (b) building tall and narrow (c) making brittle joints (d) using a light roof
22. 22.Which of these makes a building less safe in earthquakes? (a) making brittle joints (b) fitting rubber base pads (c) adding steel to concrete (d) adding cross bracing
23. 23.🏚️ Three solid model towers are made of the same material. Tower A is 160 cm tall on a 20 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 240 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
24. 24.🔍 Which is the odd one out? (a) making brittle joints (b) using flexible joints (c) adding steel to concrete (d) adding cross bracing
25. 25.🔍 Which is the odd one out? (a) using a light roof (b) using a heavy roof (c) adding steel to concrete (d) having a wide base
26. 26.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
27. 27.True or false: stacking loose bricks makes a building less safe in earthquakes. (a) False (b) True
28. 28.True or false: using a heavy roof makes a building safer in earthquakes. (a) True (b) False
29. 29.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) on a thin pole (c) on the very top (d) hanging outside
30. 30.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
31. 31.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False
32. 32.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
33. 33.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
34. 34.Which of these makes a building safer in earthquakes? (a) fitting rubber base pads (b) leaving out steel bars (c) using a heavy roof (d) stacking loose bricks
35. 35.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 40 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 40 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
36. 36.🏚️ 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 60 cm tall on a 20 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
37. 37.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) raising heavy tanks high (c) using a light roof (d) adding cross bracing
38. 38.True or false: using a light roof makes a building safer in earthquakes. (a) False (b) True
39. 39.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they bend, not break (c) they look nice (d) they stop shaking
40. 40.🏚️ Three solid model towers are made of the same material. Tower A is 180 cm tall on a 30 cm wide base, tower B is 200 cm tall on a 40 cm base and tower C is 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B

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