Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 502 · 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 150 cm tall on a 30 cm base and tower C is 40 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
2. 2.🏚️ 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 100 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 B (c) tower A
3. 3.🔍 Which is the odd one out? (a) using a heavy roof (b) making brittle joints (c) fitting rubber base pads (d) stacking loose bricks
4. 4.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.True or false: using a light roof makes a building safer in earthquakes. (a) True (b) False
6. 6.🏚️ Why are flexible joints good in an earthquake? (a) they bend, not break (b) they look nice (c) they are cheap (d) they stop shaking
7. 7.🔍 Which is the odd one out? (a) keeping a simple shape (b) adding cross bracing (c) having a wide base (d) raising heavy tanks high
8. 8.🏚️ 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 150 cm tall on a 30 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
9. 9.Which of these makes a building less safe in earthquakes? (a) building tall and narrow (b) having a wide base (c) using a light roof (d) adding cross bracing
10. 10.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) adding cross bracing (c) raising heavy tanks high (d) stacking loose bricks
11. 11.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
12. 12.🏚️ 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 30 cm tall on a 10 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
13. 13.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) building tall and narrow (b) leaving out steel bars (c) adding steel to concrete (d) stacking loose bricks
15. 15.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) on the very top (c) hanging outside (d) low down
16. 16.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
17. 17.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
18. 18.True or false: adding cross bracing makes a building less safe in earthquakes. (a) True (b) False
19. 19.🏚️ Does using a heavy roof 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 50 cm tall on a 10 cm wide base, tower B is 120 cm tall on a 30 cm base and tower C is 60 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
21. 21.🔍 Which is the odd one out? (a) stacking loose bricks (b) building tall and narrow (c) keeping a simple shape (d) using a heavy roof
22. 22.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
23. 23.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) using a light roof (c) making brittle joints (d) using flexible joints
24. 24.True or false: building tall and narrow makes a building less safe in earthquakes. (a) True (b) False
25. 25.True or false: using a heavy roof makes a building less safe in earthquakes. (a) True (b) False
26. 26.🏚️ 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 60 cm tall on a 10 cm base and tower C is 140 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower C (b) tower A (c) tower B
27. 27.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
28. 28.🏚️ Does building tall and narrow make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
29. 29.🏚️ 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 50 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 A (b) tower C (c) tower B
30. 30.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
31. 31.🏚️ 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 20 cm tall on a 20 cm base and tower C is 120 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
32. 32.🏚️ 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 160 cm tall on a 40 cm base and tower C is 120 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower C (c) tower A
33. 33.🔍 Which is the odd one out? (a) using flexible joints (b) having a wide base (c) keeping a simple shape (d) leaving out steel bars
34. 34.🏚️ 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 20 cm tall on a 20 cm base and tower C is 40 cm tall on a 20 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
35. 35.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
36. 36.Which of these makes a building less safe in earthquakes? (a) adding steel to concrete (b) adding cross bracing (c) stacking loose bricks (d) using flexible joints
37. 37.Which of these makes a building safer in earthquakes? (a) leaving out steel bars (b) having a wide base (c) raising heavy tanks high (d) building tall and narrow
38. 38.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a shake table (b) a fridge (c) a microscope (d) a telescope
39. 39.True or false: adding steel to concrete makes a building safer in earthquakes. (a) True (b) False
40. 40.Which of these makes a building less safe in earthquakes? (a) having a wide base (b) fitting rubber base pads (c) using a light roof (d) using a heavy roof

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