Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 287 · 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.🔍 Which is the odd one out? (a) using a light roof (b) leaving out steel bars (c) adding steel to concrete (d) using flexible joints
2. 2.🏚️ Why is a wide base safer? (a) it is harder to tip over (b) it is taller (c) it is colourful (d) it is lighter
3. 3.🔍 Which is the odd one out? (a) adding steel to concrete (b) building tall and narrow (c) having a wide base (d) using a light roof
4. 4.🔍 Which is the odd one out? (a) making brittle joints (b) having a wide base (c) stacking loose bricks (d) building tall and narrow
5. 5.🏚️ 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 40 cm tall on a 40 cm base and tower C is 50 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
6. 6.🏚️ 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 120 cm tall on a 30 cm base and tower C is 30 cm tall on a 10 cm base. Which is the hardest to tip over? (a) tower C (b) tower B (c) tower A
7. 7.🏚️ 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 20 cm tall on a 20 cm base and tower C is 80 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
8. 8.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
9. 9.🏚️ Where should heavy water tanks go in a quake zone? (a) on a thin pole (b) hanging outside (c) low down (d) on the very top
10. 10.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) adding steel to concrete (c) making brittle joints (d) leaving out steel bars
11. 11.🏚️ 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 140 cm tall on a 20 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
12. 12.Which of these makes a building safer in earthquakes? (a) stacking loose bricks (b) building tall and narrow (c) using a heavy roof (d) keeping a simple shape
13. 13.🏚️ What do engineers use to test models of buildings for earthquakes? (a) a microscope (b) a shake table (c) a fridge (d) a telescope
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.True or false: using a light roof makes a building safer in earthquakes. (a) False (b) True
16. 16.Which of these makes a building less safe in earthquakes? (a) building tall and narrow (b) using a light roof (c) having a wide base (d) fitting rubber base pads
17. 17.True or false: adding cross bracing makes a building safer in earthquakes. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) using a heavy roof (b) fitting rubber base pads (c) leaving out steel bars (d) raising heavy tanks high
19. 19.🏚️ Does fitting rubber base pads make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
20. 20.🏚️ Does using a light roof make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
21. 21.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
22. 22.🏚️ 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 60 cm tall on a 20 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 C (c) tower A
23. 23.🏚️ Does leaving out steel bars make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
24. 24.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) making brittle joints (c) having a wide base (d) adding steel to concrete
25. 25.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
26. 26.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
27. 27.True or false: adding steel to concrete makes a building less safe in earthquakes. (a) True (b) False
28. 28.🏚️ Three solid model towers are made of the same material. Tower A is 200 cm tall on a 40 cm wide base, tower B is 70 cm tall on a 10 cm base and tower C is 120 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower B (b) tower A (c) tower C
29. 29.True or false: using flexible joints makes a building safer in earthquakes. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) raising heavy tanks high (b) making brittle joints (c) adding steel to concrete (d) using a heavy roof
31. 31.🏚️ Why are flexible joints good in an earthquake? (a) they are cheap (b) they look nice (c) they bend, not break (d) they stop shaking
32. 32.🏚️ Does stacking loose bricks make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
33. 33.True or false: using flexible joints makes a building less safe in earthquakes. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) adding cross bracing (b) building tall and narrow (c) raising heavy tanks high (d) leaving out steel bars
35. 35.🏚️ 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 20 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
36. 36.🔍 Which is the odd one out? (a) using a heavy roof (b) having a wide base (c) keeping a simple shape (d) using a light roof
37. 37.🏚️ 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 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 B (b) tower C (c) tower A
38. 38.Which of these makes a building safer in earthquakes? (a) making brittle joints (b) building tall and narrow (c) having a wide base (d) using a heavy roof
39. 39.🏚️ 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 280 cm tall on a 40 cm base and tower C is 120 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
40. 40.🏚️ 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 10 cm tall on a 10 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 A (c) tower B

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