Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 123 · 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 40 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 C (b) tower B (c) tower A
2. 2.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
3. 3.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
4. 4.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) raising heavy tanks high (c) adding cross bracing (d) using a heavy roof
5. 5.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
6. 6.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
7. 7.Which of these makes a building safer in earthquakes? (a) keeping a simple shape (b) leaving out steel bars (c) using a heavy roof (d) building tall and narrow
8. 8.Which of these makes a building less safe in earthquakes? (a) fitting rubber base pads (b) using a light roof (c) building tall and narrow (d) having a wide base
9. 9.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) building tall and narrow (c) using flexible joints (d) stacking loose bricks
10. 10.🔍 Which is the odd one out? (a) stacking loose bricks (b) using flexible joints (c) fitting rubber base pads (d) adding steel to concrete
11. 11.🏚️ 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 50 cm tall on a 10 cm base and tower C is 80 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower C (c) tower B
12. 12.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
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 60 cm tall on a 30 cm base and tower C is 60 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
14. 14.🏚️ Where should heavy water tanks go in a quake zone? (a) low down (b) hanging outside (c) on the very top (d) on a thin pole
15. 15.🏚️ 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 280 cm tall on a 40 cm base and tower C is 60 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
16. 16.Which of these makes a building less safe in earthquakes? (a) using flexible joints (b) adding steel to concrete (c) making brittle joints (d) adding cross bracing
17. 17.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) raising heavy tanks high (c) using a heavy roof (d) adding steel to concrete
18. 18.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
19. 19.Which of these makes a building safer in earthquakes? (a) building tall and narrow (b) having a wide base (c) stacking loose bricks (d) using a heavy roof
20. 20.Which of these makes a building less safe in earthquakes? (a) using a heavy roof (b) fitting rubber base pads (c) adding steel to concrete (d) keeping a simple shape
21. 21.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
22. 22.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) fitting rubber base pads (c) building tall and narrow (d) raising heavy tanks high
23. 23.🏚️ 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 60 cm tall on a 30 cm base and tower C is 40 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
24. 24.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a microscope (c) a fridge (d) a telescope
25. 25.🏚️ Three solid model towers are made of the same material. Tower A is 30 cm tall on a 30 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 120 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
26. 26.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) leaving out steel bars (c) adding steel to concrete (d) having a wide base
27. 27.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they look nice (c) they stop shaking (d) they are cheap
28. 28.True or false: raising heavy tanks high makes a building safer in earthquakes. (a) False (b) True
29. 29.True or false: having a wide base makes a building less safe in earthquakes. (a) False (b) True
30. 30.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) building tall and narrow (c) using a heavy roof (d) using a light roof
31. 31.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
32. 32.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True
33. 33.True or false: using flexible joints makes a building safer in earthquakes. (a) False (b) True
34. 34.🏚️ 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 50 cm tall on a 10 cm base and tower C is 160 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
35. 35.🏚️ 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 10 cm tall on a 10 cm base and tower C is 40 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
36. 36.🔍 Which is the odd one out? (a) raising heavy tanks high (b) adding steel to concrete (c) using flexible joints (d) having a wide base
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 160 cm tall on a 40 cm base and tower C is 200 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
38. 38.🔍 Which is the odd one out? (a) using flexible joints (b) raising heavy tanks high (c) building tall and narrow (d) using a heavy roof
39. 39.🔍 Which is the odd one out? (a) adding cross bracing (b) using a light roof (c) making brittle joints (d) adding steel to concrete
40. 40.True or false: leaving out steel bars makes a building less safe in earthquakes. (a) False (b) True

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