Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 477 · 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 120 cm tall on a 20 cm wide base, tower B is 40 cm tall on a 10 cm base and tower C is 280 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
2. 2.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) False (b) True
3. 3.True or false: having a wide base makes a building less safe in earthquakes. (a) False (b) True
4. 4.True or false: using a heavy roof makes a building safer in earthquakes. (a) False (b) True
5. 5.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) adding steel to concrete (c) using a heavy roof (d) building tall and narrow
6. 6.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
7. 7.🏚️ 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 30 cm tall on a 10 cm base and tower C is 50 cm tall on a 10 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
8. 8.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.🔍 Which is the odd one out? (a) raising heavy tanks high (b) using a heavy roof (c) making brittle joints (d) having a wide base
10. 10.True or false: keeping a simple shape makes a building less safe in earthquakes. (a) True (b) False
11. 11.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) using flexible joints (c) leaving out steel bars (d) using a heavy roof
12. 12.Which of these makes a building less safe in earthquakes? (a) using a light roof (b) having a wide base (c) using flexible joints (d) raising heavy tanks high
13. 13.🔍 Which is the odd one out? (a) adding steel to concrete (b) fitting rubber base pads (c) using a light roof (d) building tall and narrow
14. 14.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
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.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they stop shaking (c) they bend, not break (d) they look nice
17. 17.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
18. 18.True or false: using a light roof makes a building safer in earthquakes. (a) True (b) False
19. 19.True or false: adding cross bracing makes a building safer in earthquakes. (a) True (b) False
20. 20.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
21. 21.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) leaving out steel bars (c) building tall and narrow (d) having a wide base
22. 22.True or false: leaving out steel bars makes a building safer in earthquakes. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) having a wide base (b) raising heavy tanks high (c) keeping a simple shape (d) fitting rubber base pads
24. 24.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
25. 25.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) on a thin pole (c) on the very top (d) low down
26. 26.Which of these makes a building less safe in earthquakes? (a) keeping a simple shape (b) adding steel to concrete (c) building tall and narrow (d) using flexible joints
27. 27.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
28. 28.🔍 Which is the odd one out? (a) using a light roof (b) keeping a simple shape (c) using a heavy roof (d) adding cross bracing
29. 29.🔍 Which is the odd one out? (a) building tall and narrow (b) leaving out steel bars (c) making brittle joints (d) adding cross bracing
30. 30.Which of these makes a building less safe in earthquakes? (a) using a heavy roof (b) using flexible joints (c) fitting rubber base pads (d) having a wide base
31. 31.🏚️ 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 70 cm tall on a 10 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
32. 32.🏚️ 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 60 cm tall on a 10 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 C (c) tower B
33. 33.True or false: building tall and narrow 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 150 cm tall on a 30 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 210 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
35. 35.🔍 Which is the odd one out? (a) keeping a simple shape (b) using a light roof (c) leaving out steel bars (d) having a wide base
36. 36.🔍 Which is the odd one out? (a) making brittle joints (b) stacking loose bricks (c) building tall and narrow (d) keeping a simple shape
37. 37.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
38. 38.True or false: keeping a simple shape makes a building safer in earthquakes. (a) True (b) False
39. 39.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) using a light roof (c) building tall and narrow (d) stacking loose bricks
40. 40.🏚️ 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 200 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C

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